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2026.06.18 District Board Agenda Packet
Er9 UTH TANG • 1950 • `Na `G� C UTILITY p`STP SOUTH TAHOE PUBLIC UTILITY DISTRICT REGULAR BOARD MEETING AGENDA Thursday, June 18, 2026 - 2:00 p.m. District Board Room 1275 Meadow Crest Drive, South Lake Tahoe, California Joel Henderson, Director BOARD MEMBERS Kelly Sheehan, Director Nick Haven, Vice President Shane Romsos, President Nick Exline, Director Paul Hughes, General Manager Andrea Salazar, Chief Financial Officer 1 . CALL TO ORDER REGULAR MEETING- PLEDGE OF ALLEGIANCE (At this time, please silence phones and other electronic devices so as not to disrupt the business of the meeting.) 2. COMMENTS FROM THE PUBLIC (This is an opportunity for members of the public to address the Board on any short non-agenda items that are within the subject matter jurisdiction of the District. No discussion or action can be taken on matters not listed on the agenda, per the Brown Act. Each member of the public who wishes to comment shall be allotted five minutes,subject to modification by the Board President.) 3. CORRECTIONS TO THE AGENDA OR CONSENT CALENDAR (For purposes of the Brown Act, all Action and Consent items listed give a brief description of each item of business to be transacted or discussed. Recommendations of the staff, as shown, do not prevent the Board from taking other action.) 4. ADOPTION OF CONSENT CALENDAR (Any item can be removed to be discussed and considered separately upon request. Comments and questions from members of the public, staff or Board can be taken when the comment does not necessitate separate action.) 5. CONSENT ITEMS BROUGHT FORWARD FOR SEPARATE DISCUSSION/ACTION 6. ITEMS FOR BOARD ACTION a. 2025 Urban Water Management Plan and Water Shortage Contingency Plan Adoption (John Sheridan, Operations Supervisor) (1) Hold a Public Hearing at 2:01 p.m. to receive public comments regarding the District's 2025 Urban Water Management Plan and Water Shortage Contingency Plan updates; and (2) Adopt Resolution No. 3336-26 approving the 2025 Urban Water Management Plan and Water Shortage Contingency Plan. b. 2026 Pioneer Trail Waterline Project - Rebid (Trevor Coolidge,Senior Engineer) (1) Adopt Addenda to the 2026 Pioneer Trail Waterline Project - Rebid Design Plans and Specifications pursuant to Government Code 830.6; (2) Find minor irregularities in the bid from Vinciguerra Construction, Inc. to be immaterial and waive immaterial irregularities; and (3) Award the Contract for the 2026 Pioneer Trail Waterline Project- Rebid to the lowest responsive, responsible bidder, Vinciguerra Construction, Inc., in the amount of $5,900,000. REGULAR BOARD MEETING AGENDA-June 18, 2026 PAGE-2 c. Bijou Pump Station Rehabilitation Project (Trevor Coolidge,Senior Engineer) (1) Approve the additional Scope of Work for Water Systems Consulting, Inc. to complete design services for the Bijou Pump Station Rehabilitation Project; and (2) Authorize the General Manager to execute Amendment B to Task Order No. 2 with Water Systems Consulting, Inc. in the amount of $381,697. d. Acquisition of 936 Tanglewood Drive (Mark Seelos, Water Resources Manager) (1) Approve purchase of 936 Tanglewood Drive (El Dorado County Assessor's Parcel Number 31-313-017) in the amount of $425,000; and (2) Authorize the General Manager to execute the associated real estate transaction documents. e. Sunset and Tanglewood Well Drilling Project (Mark Seelos, Water Resources Manager) (1) Find minor irregularities in the bid from Zim Industries to be immaterial, and waive minor irregularities; and (2) Award the Project to the lowest responsive, responsible bidder, Zim Industries, in the amount of $2,268,900. f. Sunset and Tanglewood Well Drilling Project (Mark Seelos, Water Resources Manager) (1) Approve the Scope of Work from Montgomery & Associates to provide hydrogeological support, specialty inspection services, and construction management services for the Sunset and Tanglewood Well Project; and (2) authorize the General Manager to execute Task Order No. 3 with Montgomery & Associates in the amount of $328,645. g. Indian Creek Reservoir Nutrient Management Project (Mark Seelos,Water Resources Manager) (1) Approve the Scope of Work from Stillwater Sciences to provide planning, permitting, and monitoring services for the Indian Creek Reservoir Nutrient Management Project; and (2) Authorize the General Manager to execute Task Order No. 3 with Stillwater Sciences in the amount of $160,823. h. Quality Control Officer Full-Time Position (Dan Arce, Laboratory Director) Approve the addition of a new full-time position by converting the current Laboratory Quality Control Officer from a part time/temporary position to a full-time/permanent position. 7. STANDING AND AD-HOC COMMITTEES AND LIAISON REPORTS (Discussions may take place; however, no action will be taken.) 8. BOARD MEMBER REPORTS (Discussions may take place; however, no action will be taken.) 9. STAFF/ATTORNEY REPORTS (Discussions may take place; however, no action will be taken.) a. Sewer Lateral Air Tests (Ryan Lee, Customer Service Manager) 10. GENERAL MANAGER REPORT (Discussion may take place; however, no action will be taken.) REGULAR BOARD MEETING AGENDA-June 18, 2026 PAGE-3 11. NOTICE OF PAST AND FUTURE MEETINGS/EVENTS Past Meetings/Events 06/04/2026-2:00 p.m. Regular Board Meeting at the District 06/09/2026-3:30 p.m. Operations Committee Meeting at the District 06/10/2026- 10:00 a.m. El Dorado Water Agency Meeting in Placerville Future Meetings/Events 06/19/2026-Juneteenth Holiday-District Offices Closed 07/02/2026- Regular Board Meeting at the District 12. ITEMS FOR CLOSED SESSION (The Board will adjourn to Closed Session to discuss items identified below.Closed Session is not open to the public; however, an opportunity will be provided at this time if members of the public would like to comment on any item listed-three minute limit,subject to modification by the Board President.) a. Pursuant to Section 54956.9(d)(1) of the California Government code, Closed Session may be held for conference with legal counsel regarding existing litigation: Yolo County Superior Court Case CV 2021-1686, Alpine County vs. South Tahoe Public Utility District; et al. b. Pursuant to Government Code Section 54957(b)(1) consider the appointment of a public employee. Provide staff with recruitment direction. ADJOURNMENT (The next Regular Board Meeting is Thursday,July 2, 2026,at 2:00 p.m.) The South Tahoe Public Utility District Board of Directors regularly meets the first and third Thursday of each month.A complete Agenda packet is available for review at the meeting and at the District office during the hours of 8:00 a.m.and 5:00 p.m.,Monday through Friday. A recording of the meeting is retained for 30 days after Minutes of the meeting have been approved.Items on the Agenda are numbered for identification purposes only and will not necessarily be considered in the order in which they appear.Designated times are for particular items only.Public Hearings will not be called to order prior to the time specified,but may occur slightly later than the specified time. Public participation is encouraged.Public comments on items appearing on the Agenda will be taken at the same time the Agenda items are heard;comments should be brief and directed to the specifics of the item being considered.Please provide the Clerk of the Board with a copy of all written materials presented at the meeting.Comments on items not on the Agenda can be heard during"Comments from the Audience;"however,action cannot be taken on items not on the Agenda. Backup materials relating to an open session item on this Agenda,which are not included with the Board packet,will be made available for public inspection at the same time they are distributed or made available to the Board,and can be viewed at the District office,at the Board meeting and upon request to the Clerk of the Board. The meeting location is accessible to people with disabilities. Every reasonable effort will be made to accommodate participation of the disabled in all of the District's public meetings.If particular accommodations are needed,please contact the Clerk of the Board at(530) 544-6474,extension 6203.All inquiries must be made at least 48 hours in advance of the meeting. REGULAR BOARD MEETING AGENDA-June 18, 2026 PAGE-4 ,o„TH TAHO4. (tsewe� 1950 Ws��C' e��C UTILITY D,� SOUTH TAHOE PUBLIC UTILITY DISTRICT CONSENT CALENDAR Thursday, June 18, 2026 ITEMS FOR CONSENT a. 2027 RETURN ACTIVATED SLUDGE PUMP STATION REPLACEMENT PROJECT (Brendan Cusick,Senior Engineer) (1) Approve the proposed Scope of Work by Carollo Engineers, Inc. for 2027 Return Activated Sludge Building Rehabilitation; and (2) Authorize the General Manager to execute Task Order No. 34 with Carollo Engineers, Inc. in the amount of $162,459. b. 2026/2027 BULK SODIUM HYPOCHLORITE SUPPLIES (Aaron Buckman, Manager of Plant Operations and Phil Trella, Chief Plant Operator) (1) Award Contract for Fiscal Year 2026/2027, for the bulk supply of Sodium Hypochlorite, to Olin Corporation dba Olin Chlor Alkali Products, at a unit price of $3.045 per gallon, for an estimated annual amount of *$352,302.42 including sales tax and U.S. Superfund Excise Tax Surcharge; and (2) Utilize Exception No. 4 of the District's Purchasing Policy for this purchase. c. 2026/2027 12.5% SODIUM HYPOCHLORITE DRUM SUPPLIES (Chris Stanley, Field Operations Manager, Jeremy Rutherdale, Field Operations Mechanical Technician Supervisor) (1) Award Contract for Fiscal Year 2026/2027 for the supply of 30-gallon drums of 12.5%Sodium Hypochlorite to Thatcher Company of Nevada, Inc. at a unit price of $9.50 per gallon for an estimated annual amount of *$71,250, exclusive of sales tax; and (2) Utilize Exception No. 4 of the District's Purchasing Policy for this purchase. d. 2026/2027 12.5% SODIUM HYPOCHLORITE TOTE SUPPLIES (Chris Stanley, Field Operations Manager, Jeremy Rutherdale, Field Operations Mechanical Technician Supervisor) (1) Award Contract for Fiscal Year 2026/2027 for the supply of 12.5%Sodium Hypochlorite totes to Thatcher Company of Nevada, Inc. at a unit price of $8.50 per gallon for an estimated annual amount of *$63,750, exclusive of sales tax; and (2) Utilize Exception No. 4 of the District's Purchasing Policy for this purchase. e. CALPERS REQUIRED PAY LISTING BY POSITION (Greg Dupree,Accounting Manager) Adopt Resolution No. 3337-26 which incorporates the Pay Listing by Position for the Pay Listing effective June 4, 2026. f. SEWER AND WATER ENTERPRISE 2026/2027 APPROPRIATIONS SUBJECT TO LIMITATION (Greg Dupree,Accounting Manager) Adopt Resolution No. 3338-26 setting the limitation on Appropriations for Fiscal Year 2026/2027. g. RECEIVE AND FILE PAYMENT OF CLAIMS (Greg Dupree,Accounting Manager) Receive and file Payment of Claims in the amount of $2,025,064.43. h. REGULAR BOARD MEETING MINUTES: June 4, 2026 (Shannon Chandler, Admin Analyst/Assistant Clerk of the Board) Approve June 4, 2026, Minutes. General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline _ I 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 4a TO: Board of Directors FROM: Brendan Cusick, Senior Engineer MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: 2027 Return Activated Sludge Pump Station Replacement Project REQUESTED BOARD ACTION: (1) Approve the proposed Scope of Work by Carollo Engineers, Inc. for 2027 Return Activated Sludge Building Rehabilitation; and (2) Authorize the General Manager to execute Task Order No. 34 with Carollo Engineers, Inc. in the amount of $162,459. DISCUSSION: On September 7, 2023, the Board approved the proposed Scope of Work from Carollo Engineers, Inc. (Carollo) for engineering design services for the Return Activated Sludge (RAS) Pump Station Building Rehabilitation Project; and authorized the General Manager to execute Task Order No. 30 to the Master Services Agreement with Carollo for preliminary design tasks, including development of an Alternatives Analysis Technical Memorandum. On October 19, 2023, the Board approved Amendment A to Carollo's Task Order which authorized Task 2.2 Site Investigations. Task Order Amendment B was authorized on March 7, 2024, for design scope tasks associated with developing a Basis of Design Report (30% design), 60% and 90% design documents. Task Order Amendment C was authorized on February 6, 2025, for District-initiated adjustments to the previously approved design scope. Carollo's proposed Scope of Work includes professional engineering services for preparation of the final design, bidding documents and providing Bid Period Services for the RAS Pump Station Replacement Project at the Wastewater Treatment Plant. The services under this Task Order will encompass design from 90% through construction bidding services. Project design elements include: • New centralized Return Activated Sludge/Waste Activated Sludge Pump Station and Motor Controls Center Building; • Seismic retrofit of the existing sludge pump station to maintain use of existing ancillary process equipment in the current location; Brendan Cusick June 18, 2026 Page 2 • Update design to meet 2025 California Building Code; • Incorporate replacement of Transformers T3 and T4 due to postponement of Blowers Replacement Project; • Rehabilitate existing miscellaneous concrete structures including the Mixed Liquor Splitter Box, Primary Clarifier Junction Box, and Aeration Basin Splitter Box structures. This shall include as needed concrete repair and replacement of equipment such as existing gates, valves, and supports. Project bid, contract award, and Notice to Proceed for construction are anticipated to happen between August - December 2027. The final bid package is due to the District by August 1, 2027. Construction is anticipated to start in May 2028. SCHEDULE: Design: July 2026-August 2027; Bidding Services: Fall to Winter 2027 COSTS: $162,459 ACCOUNT NO: 10.30.8479 (RASRHB) BUDGETED AMOUNT AVAILABLE: Fiscal Year 2026 available budget $1 16,989; additional budget is being allocated in Fiscal Year 2027 IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ►z Yes ❑ No ❑ N/A ATTACHMENTS: Carollo Engineers, Inc. Scope of Work and Fee Estimate CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer GENERAL MANAGER: YES 74- NO CHIEF FINANCIAL OFFICER: YES NO SCOPE OF WORK SOUTH TAHOE PUBLIC UTILITY DISTRICT (STPUD) AND CAROLLO ENGINEERS, INC. (CONSULTANT) This Task Order is issued by the STPUD and accepted by CONSULTANT pursuant to the mutual promises, covenants and conditions contained in the Master Agreement between the above named parties dated the 4th day of May, 2017, in connection with Engineering Services for Final Design of the: Return Activated Sludge (RAS) Pump Station Project (Project) Purpose This scope of work includes professional engineering services for preparation of Bidding Documents and providing Bid Period Services for the RAS Pump Station Project at the wastewater treatment plant (WWTP) owned and operated by the South Tahoe Public Utility District(District). An Alternatives Analysis was conducted and a new centralized RAS and WAS pumping station was selected as the preferred alternative.The services included herein will encompass design from 90 percent thru bidding services.The bid documents will be prepared for the District for the purpose of soliciting competitive bids for construction and executing a contract with the successful bidder. Project design elements will include: • New centralized RAS/WAS Pump Station and MCC Building. • Seismic retrofit of the existing sludge PS to maintain use of existing ancillary process equipment in current location. • Update design to meet 2025 CBC. • Incorporate replacement of Transformers T3 and T4. • Rehabilitate existing miscellaneous structures including the Mixed Liquor(ML) Splitter Box, Primary Clarifier Junction Box, and Aeration Basin Splitter Box structures.This shall include as needed concrete repair and replacement of equipment such as existing gates and supports. The project schedule is dictated by the following: • Project bid, contract award, and NTP for construction are anticipated to happen between August- December 2027.The final bid package is due to the District by August 1, 2027. Scope of Services Task 1— Prepare Bid Documents 1.1— Project Kick-off Workshop CONSULTANT shall conduct an in-person workshop to review the project scope elements with STPUD staff and confirm the path to finalizing the bid documents.The workshop will review the 90% Design Documents and elements that will be changed or added. 1.2— Prepare Bidding Documents and Cost Estimate Final documents suitable for bidding will be prepared as well as a final opinion of probable construction costs(OPCC) and construction schedule. Task 1 Assumptions: • The design scope and associated fee estimate are based on the project elements identified above. • It is assumed that the duration of the project will be 18 months from NTP to completion of bid period. • Documents shall conform to the current codes at the time of bidding. • District will print bid sets from electronic files provided by CONSULTANT. • District will assume responsibility for all project permitting as necessary. • District will assume responsibility for coordination with funding agencies. • The kick-off meeting will be conducted in person and attended by the Project Manager, Project Engineer, and Lead Electrical Engineer.The kick-off meeting will be followed by a site visit to confirm any remaining items. Task 1 Deliverables: • Final bid document submittal, including electronic files suitable for the District to print final bid sets and editable AutoCAD, Word, and Excel files for record purposes (no hard copies). • Final OPCC. • Final construction schedule. Task 2— Bidding Services 2.1—Attend Pre-bid Conference CONSULTANT Project Engineer will attend the pre-bid conference and assist with describing the project and answering general questions that do not require technical interpretation. CONSULTANT Project Engineer will also attend a site walk with the bidders and District. Questions from bidders during the site walk will not be answered during the site walk, and bidders will be advised that only written questions from bidders will be answered, per Task 2.2. 2.2—Answer Bid Questions and Prepare Addenda CONSULTANT will answer bid questions directed to the CONSULTANT by the District and prepare addenda as required. 2.3— Prepare Conformed Contract Documents Conformed Contract Documents will be prepared utilizing the addenda and delivered to the District within 4 weeks of bid opening. Task 2 Assumptions: • District will advertise for bids and distribute bid documents and addenda. • Up to 3 addenda will be issued. • Analysis and resolution of bid protests, if required, is not included in this scope of services. • Only one solicitation of bids is included in this scope of services. Task 2 Deliverables: • Addenda as required. • Conformed Contract Documents including electronic files suitable for the District to print final bid sets and editable AutoCAD, Word, and Excel files for record purposes (no hard copies). ESTIMATED ENGINEERING HOURS AND COSTS Ca9*II4 $ Engineers...Working Wonders With Water® South Tahoe Public Utility District Engineering Services for RAS Pump Station Building Rehabilitation Bid Documents and Bidding Services OTHER DIRECT COSTS COST SUMMARY TASK S.Parker T.Stroud M.Zappone R.Gutierrez J.Warren M.Hollenbaugh K.Punyamurtula H.Rismanchi D.Robinson Sub- Principal- Project Project Architect Staff Struct Electrical Instrument Senior Graphics/ Clerical Subtotals PECE consultant Travel in-Charge Manager Engineer Prof Engr Engr Engr CAD CAD Support Markup $/mi QA/QC Tech Tech Misc. Costs and 2026 Fee Schedule $367 $357 $280 $272 $224 $309 $309 $309 $245 $183 $159 Hours Budget $17.00 Subconsultants 5.0% Printing $0.725 Total ODCs Total Cost Column 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 TASK 1-PREPARE BID DOCUMENTS 1.1 Project Kick-off Workshop 0 4 6 0 0 0 6 0 0 0 2 18 $5,280 $306 $0 $0 $0 $352 $658 $5,938 1.2 Prepare Bidding Documents and Cost Estimate 7 13 44 12 72 50 40 20 27 97 18 400 $100,140 $6,800 $0 $0 $0 $0 $6,800 $106,940 Task Hours 7 17 50 12 72 50 46 20 27 97 20 418 Task 1 Budget $2,569 $6,069 $14,000 $3,264 $16,128 $15,450 $14,214 $6,180 $6,615 $17,751 $3,180 $105,420 $7,106 $0 $0 $0 $352 $7,458 $112,878 TASK 2-BIDDING SERVICES 2.1 Attend pre-bid conference 0 0 4 0 0 0 0 0 0 0 0 4 $1,120 $68 $0 $0 $0 $91 $159 $1,279 2.2 Answer Bid Questions and Prepare Addenda 0 6 14 4 18 10 12 4 4 0 4 76 $20,832 $1,292 $0 $0 $0 $0 $1,292 $22,124 2.3 Prepare Conformed Contract Documents 0 2 8 2 8 3 4 2 13 64 8 114 $24,240 $1,938 $0 $0 $0 $0 $1,938 $26,178 Task 2 Hours 0 8 26 6 26 13 16 6 17 64 12 194 Task 2 Budget $0 $2,856 $7,280 $1,632 $5,824 $4,017 $4,944 $1,854 $4,165 $11,712 $1,908 $46,192 $3,298 $0 $0 $0 $91 $3,389 $49,581 Tasks 1-3 Total Hours 7 25 76 18 98 63 62 26 44 161 32 612 Tasks 1-3 Total Budget $2,569 $8,925 $21,280 $4,896 $21,952 $19,467 $19,158 $8,034 $10,780 $29,463 $5,088 $151,612 $10,404 $0 $0 $0 $443 $10,847 $162,459 p_ 9 _ aaomazaseaasrPuoRnsRenaeo a eer, _ �, Amendment2 General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 4b TO: Board of Directors FROM: Aaron Buckman, Manager of Plant Operations Phil Trella, Chief Plant Operator MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: 2026/2027 Bulk Sodium Hypochlorite Supplies REQUESTED BOARD ACTION: (1) Award Contract for Fiscal Year 2026/2027, for the bulk supply of Sodium Hypochlorite, to Olin Corporation dba Olin Chlor Alkali Products, at a unit price of $3.045 per gallon, for an estimated annual amount of *$352,302.42 including sales tax and U.S. Superfund Excise Tax Surcharge; and (2) Utilize Exception No. 4 of the District's Purchasing Policy for this purchase. DISCUSSION: The District uses Sodium Hypochlorite for wastewater disinfection to comply with applicable waste discharge permit requirements. Deliveries are made in bulk shipments of approximately 49,000 net pounds. The original Contract included four (4) one-year options to extend upon mutual agreement of the parties. Those extension options are no longer available. Accordingly, staff evaluated whether to issue a new competitive solicitation for Fiscal Year 2026/2027. Based on current industry pricing, market conditions, supplier reliability, and the need to ensure continuity of operations for a critical treatment chemical, staff determined that it is in the best interest of the District not to solicit new bids at this time. The District would be utilizing Exception No. 4 of the District's Purchasing Policy: When the Board of Directors or General Manager determines that due to special circumstances, it is in the District's best interest to purchase an item or enter into a contract without compliance with the bidding procedures i.e. competitive proposals would not be useful, would not produce an advantage or would be undesirable, impractical or impossible. Special Circumstances include, but are not limited to maintenance and inspection services and other situations where obtaining qualified bids is difficult, when there is limited number of qualified bidders, and/or where the type of services to be performed precludes the District from obtaining multiple bids. Aaron Buckman June 18, 2026 Page 2 Staff reviewed the pricing offered by Olin Corporation dba Olin Chlor Alkali Products and found it to be fair and reasonable considering current market conditions. Staff also considered Olin's satisfactory performance history, the importance of maintaining a dependable supply chain for a critical compliance-related chemical, and transportation and market factors affecting available pricing. For these reasons, staff recommends award of a Contract to Olin Corporation dba Olin Chlor Alkali Products for Fiscal Year 2026/2027 for the estimated amount of *$352,302.42, including sales tax and U.S. Superfund Excise Tax Surcharge. *The actual quantity and grand total may vary, but unit prices are firm. This item has been reviewed by the Purchasing Manager. SCHEDULE: July 1, 2026 through June 30, 2027 COSTS: $352,302.42 ACCOUNT NO: 10.12.4755 BUDGETED AMOUNT AVAILABLE: $335,000 IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): D Yes D No N/A ATTACHMENTS: Quote from Olin Chlor Alkali; Local comparable pricing data sheet CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer/Water GENERAL MANAGER: YES fit NO CHIEF FINANCIAL OFFICER: YES NO • %PIM TM CHLOR ALKALI 490 Stuart Road NE,Cleveland,Tennessee 37312 PRODUCTS AND VINYLS 423/336-4850.423/336-4830 Internet Address: www.olinchloralkali.com May 26,2026 Aaron Buckman,Manager of Plant Operations South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe,CA 96158 530-543-6241 Direct Subject: ANNUAL SUPPLY PROPOSAL-12.5 WT%SODIUM HYPOCHLORITE Dear Mr.Buckman: Following our recent discussions, Olin Corporation,for and on behalf of itself and its subsidiaries ("Olin") is pleased to provide South Tahoe Public Utility District ("Buyer") with our proposal to supply 12.5 wt%Sodium Hypochlorite to your South Tahoe Public Utility District Water Treatment Plant.Our proposal is outlined below: PRODUCT&GRADE: 12.5 wt%Sodium Hypochlorite,meeting the West Coast Water Treatment Specification attached hereto as Addendum A QUANTITY: 100%of Buyer's requirements estimated to be 85,000 gallons per year,and not to exceed 125% of estimate in any contract year without Olin's prior approval. DELIVERY PERIOD: 07/01/2026 through 6/30/2027. Extensions upon mutual agreement PRICE&FREIGHT Sodium Hypochlorite,12.5% Min.delivered quantities 2026/2027 Annual Pricing Full Truck Load $3.045/gal+Applicable Taxes* Note:Pricing is plus U.S.Superfund Excise Tax Surcharge($0.004/gal.for 12.5 wt%bleach) CONTAINER: Olin's provided Tank Truck ORIGIN: Olin's Primary Shipping Point, Pittsburg,CA or other preferred shipping point DESTINATION: Buyer's Water Treatment Plant in South Lake Tahoe,CA PAYMENT TERMS: Net thirty(30)days from date of invoice ADDITIONAL PROVISIONS: • This proposal is made subject to the execution by the parties of a sales contract in a form to be agreed. • Tank truck detention charges incurred at destination shall be for Buyer's account. • Product shipped shall meet Olin's specification at delivery,copy of which is attached. • Olin reserves the right to cancel this proposal at any time prior to mutual agreement and execution by the parities of a sales contract, and in any event this proposal may expire if sales contract is not executed by Buyer on or before the 30th day following the date hereof. Form Rev.: Jun.-2022 Alin Suppry Proposal- Page 2 We trust the above meets with your approval. Should you require any assistance,or have any questions concerning this proposal, please feel free to contact us at your earliest convenience. Yours truly, Jason Cho Account Manager Attachments: West Coast Water Treatment Specification Addendum A Sales Specification Ii• n 12.5 wt% Sodium Hypochlorite Solution " West Coast Water Treatment Specification Characteristics Units Min I Max Sodium Hypochlorite, NaOCI wt% 12.5 15.6 Available Chlorine wt% 11.9 14.8 Total Alkalinity' wt% 0.1 1.5 Chlorate (12.5% Basis)2 ppm N/A 3,570 Bromate (12.5%Basis)2 ppm N/A 39 Insolubles' wt% N/A 0.15 Iron, Fe ppm N/A 1.5 Nickel, Ni ppm N/A 0.1 Copper, Cu ppm N/A 0.1 Cobalt,Co ppm N/A 0.1 Sodium Hypochlorite, NaOCI wt% 12.5 15.6 Available Chlorine wt% 11.9 14.8 1-Limit set to meet ANSIAWWA 8300-18 2-Limit set to meet NSF?ANSI Standard 60 Meets the Following ANSI/AWWA B300-18 Registered EPA Pesticide Certified for the NSF/ANSI Standard 60 at a maximum use level of 84 mg/L Olin Document Information Specification No: Issue Date: Niy.. NaOCI-S4 04?17r2025 1 of 1 CUSTOMER PRODUCT VOLUME UOM FROM TO PRICE($/gal)l City of Vacaville 12.5%HYPO 360,000 GALS 7/1/26 6/30/27 3.90 City of Petaluma 12.5%HYPO 200,000 GALS 7/1/26 6/30/27 3.90 City of Benicia 12.5%HYPO 100,000 GALS 7/1/26 6/30/27 3.90 City of Calistoga 12.5%HYPO 60,000 GALS 7/1/26 6/30/27 3.90 Vallejo Sanitation&Flood Control District 12.5%HYPO 220,000 GALS 7/1/26 6/30/27 3.90 City of Fairfield 12.5%HYPO 300,000 GALS 7/1/26 6/30/27 3.90 City of Davis 12.5%HYPO 180,000 GALS 7/1/26 6/30/27 3.90 City of Livermore 12.5%HYPO 260,000 GALS 7/1/26 6/30/27 3.51 Dublin San Ramon Services District 12.5%HYPO 370,800 GALS 7/1/26 6/30/27 3.51 Zone 7 Water Agency 12.5%HYPO 315,000 GALS 7/1/26 6/30/27 3.51 Central Contra Costa Sanitary District 12.5%HYPO 450,000 GALS 7/1/26 6/30/27 3.45 City of Antioch 12.5%HYPO 233,000 GALS 7/1/26 6/30/27 3.45 City of Brentwood 12.5%HYPO 150,000 GALS 7/1/26 6/30/27 3.45 City of Martinez 12.5%HYPO 55,000 GALS 7/1/26 6/30/27 3.45 City of Pinole(Pinole/Hercules WPCP) 12.5%HYPO 115,000 GALS 7/1/26 6/30/27 3.45 City of Pittsburg 12.5%HYPO 150,000 GALS 7/1/26 6/30/27 3.45 Contra Costa Water District 12.5%HYPO 600,000 GALS 7/1/26 6/30/27 3.45 Delta Diablo Sanitation District 12.5%HYPO 377,000 GALS 7/1/26 6/30/27 3.45 Diablo Water District 12.5%HYPO 7,500 GALS 7/1/26 6/30/27 3.45 Ironhouse 12.5%HYPO 8,000 GALS 7/1/26 6/30/27 3.45 Pleasant Hill Recreation&Park District 12.5%HYPO 4,700 GALS 7/1/26 6/30/27 3.45 Rodeo Sanitary District 12.5%HYPO 45,000 GALS 7/1/26 6/30/27 3.45 West County Wastewater District 12.5%HYPO 252,000 GALS 7/1/26 6/30/27 3.45 City of South San Francisco 12.5%HYPO 165,000 GALS 7/1/26 6/30/27 3.52 City of Daly City/North San Mateo County Sanitation 12.5%HYPO 135,000 GALS 7/1/26 6/30/27 3.52 City of Millbrae 12.5%HYPO 65,000 GALS 7/1/26 6/30/27 3.52 City of San Mateo 12.5%HYPO 350,000 GALS 7/1/26 6/30/27 3.52 Sewer Authority Mid-Coastside 12.5%HYPO 120,000 GALS 7/1/26 6/30/27 3.52 Carmichael Water District 12.5%HYPO 45,000 GALS 7/1/26 6/30/27 3.545 City of Roseville 12.5%HYPO 386,700 GALS 7/1/26 6/30/27 3.545 City of Sacramento 12.5%HYPO 192,000 GALS 7/1/26 6/30/27 3.545 City of Yuba City 12.5%HYPO 1,000 GALS 7/1/26 6/30/27 3.545 El Dorado Irrigation District 12.5%HYPO 305,000 GALS 7/1/26 6/30/27 3.545 Nevada Irrigation District 12.5%HYPO 45,000 GALS 7/1/26 6/30/27 3.545 Rancho Murieta Community Services District 12.5%HYPO 50,000 GALS 7/1/26 6/30/27 3.545 Sacramento County Water Agency 12.5%HYPO 200,000 GALS 7/1/26 6/30/27 3.545 City of Morgan Hill 12.5%HYPO 15,000 GALS 7/1/26 6/30/27 3.545 City of Sunnyvale 12.5%HYPO 320,000 GALS 7/1/26 6/30/27 3.545 City of Watsonville 12.5%HYPO 60,000 GALS 7/1/26 6/30/27 3.545 Pajaro Valley Water Management Agency 12.5%HYPO 55,000 GALS 7/1/26 6/30/27 3.545 San Jose-Santa Clara Regional Wastewater Facility 12.5%HYPO 1,040,000 GALS 7/1/26 6/30/27 3.545 Valley Water(Santa Clara Valley Water District) 12.5%HYPO 1,100,000 GALS 7/1/26 6/30/27 3.545 City of Stockton 12.5%HYPO 500,000 GALS 7/1/26 6/30/27 3.49 City of Turlock 12.5%HYPO 565,000 GALS 7/1/26 6/30/27 3.49 Stanislaus Regional Water Authority 12.5%HYPO 75,000 GALS 7/1/26 6/30/27 3.49 Alameda County Water District 12.5%HYPO 300,000 GALS 7/1/26 6/30/27 3.47 City of Hayward 12.5%HYPO 250,000 GALS 7/1/26 6/30/27 3.47 City of San Leandro 12.5%HYPO 215,000 GALS 7/1/26 6/30/27 3.47 Union Sanitary District 12.5%HYPO 900,000 GALS 7/1/26 6/30/27 3.47 Central Marin Sanitation Agency 12.5%HYPO 240,000 GALS 7/1/26 6/30/27 3.49 City of Mill Valley-Sewerage Agency of Southern Marin 12.5%HYPO 50,000 GALS 7/1/26 6/30/27 3.49 County of Sonoma 12.5%HYPO 28,800 GALS 7/1/26 6/30/27 3.49 Las Gallinas Valley Sanitary District 12.5%HYPO 160,000 GALS 7/1/26 6/30/27 3.49 Marin Municipal Water District 12.5%HYPO 220,000 GALS 7/1/26 6/30/27 3.49 Napa Sanitation District 12.5%HYPO 350,000 GALS 7/1/26 6/30/27 3.49 North Marin Water District 12.5%HYPO 3,200 GALS 7/1/26 6/30/27 3.49 Sanitary District No.5 of Marin County 12.5%HYPO 10,705 GALS 7/1/26 6/30/27 3.49 Sausalito Marin City Sanitary District 12.5%HYPO 60,000 GALS 7/1/26 6/30/27 3.49 City of Napa 12.5%HYPO 240,000 GALS 7/1/26 6/30/27 3.90 City of St.Helena(Short Load Pricing for<_4,000 gallons) 12.5%HYPO 21,000 GALS 7/1/26 6/30/27 4.345 City of West Sacramento 12.5%HYPO 100,000 GALS 7/1/26 6/30/27 3.90 City of Vallejo 12.5%HYPO 155,000 GALS 7/1/26 6/30/27 3.90 Solano Irrigation District 12.5%HYPO 32,000 GALS 7/1/26 6/30/27 3.90 Town of Yountville(Short Load Pricing for<_4,000 gallons) 12.5%HYPO 20,000 GALS 7/1/26 6/30/27 4.345 City of American Canyon 12.5%HYPO 39,000 GALS 7/1/26 6/30/27 3.90 Tahoe-Truckee Sanitation Agency 12.5%HYPO 149,000 GALS 7/1/26 6/30/27 3.44 General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 4c TO: Board of Directors FROM: Chris Stanley, Field Operations Manager Jeremy Rutherdale, Field Operations Mechanical Technician Supervisor MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: 2026/2027 12.5% Sodium Hypochlorite Drum Supplies REQUESTED BOARD ACTION: (1) Award Contract for Fiscal Year 2026/2027 for the supply of 30-gallon drums of 12.5% Sodium Hypochlorite to Thatcher Company of Nevada, Inc. at a unit price of $9.50 per gallon for an estimated annual amount of *$71,250, exclusive of sales tax; and (2) Utilize Exception No. 4 of the District's Purchasing Policy for this purchase. DISCUSSION: The District uses 12.5%Sodium Hypochlorite for water treatment operations to comply with applicable regulatory requirements. Sodium Hypochlorite is required to chlorinate well water and support continued compliance with Environmental Protection Agency and State Water Resources Control Board standards. Deliveries are required in 30-gallon drums and must be compatible with the District's station-specific transfer methods and operational needs. The original Contract included four (4) one-year options to extend upon mutual agreement of the parties. Those extension options are no longer available. Accordingly, staff evaluated whether to issue a new competitive solicitation for Fiscal Year 2026/2027. Staff reviewed available pricing and bid information from other water agencies for comparable Sodium Hypochlorite supplies. Based on that review, together with the District's operational history, winter operations constraints, supplier reliability, and the need to ensure continuity of operations for a critical treatment chemical, staff determined that it is in the best interest of the District to not solicit new bids at this time. In prior contract performance, Brenntag was the low bidder and experienced recurring fulfillment issues that affected its ability to reliably meet the District's delivery requirements. Those performance issues became significant enough that Thatcher Company of Nevada, Inc, ultimately completed Brenntag's contractual obligation. Staff also reviewed other supplier capabilities and determined that Olin Chlor Alkali Products, the supplier of 12.5%Sodium Hypochlorite bulk supplies, was not willing to Chris Stanley June 18, 2026 Page 2 provide the 30-gallon drum deliveries. Based on this review, staff found that Thatcher Company of Nevada, Inc. is the only supplier both willing and capable of meeting the District's full operational requirements. If a supplier cannot reliably meet the District's Sodium Hypochlorite delivery requirements, including winter delivery conditions and station-specific transfer needs, the District could face operational disruptions, compliance risk, and potential impacts to water service reliability. Maintaining a contract structure with a supplier that has demonstrated the ability to fulfill the District's complete requirements is therefore in the District's best interest. The District would be utilizing Exception No. 4 of the District's Purchasing Policy: When the Board of Directors or General Manager determines that due to special circumstances, it is in the District's best interest to purchase an item or enter into a contract without compliance with the bidding procedures i.e. competitive proposals would not be useful, would not produce an advantage or would be undesirable, impractical or impossible. Special Circumstances include, but are not limited to maintenance and inspection services and situations where obtaining qualified bids is difficult, when there is limited number of qualified bidders, and/or where the type of services to be performed precludes the District from obtaining multiple bids. Staff reviewed the pricing offered by Thatcher Company of Nevada, Inc. and found it to be fair and reasonable considering current market conditions, the District's operational requirements, and the limited availability of suppliers able to fully perform this work. The proposed unit price of $9.50 per gallon represents an increase from the prior year price of $8.00 per gallon, or approximately 18.75%. For reference, the prior year increase was 6.1%, and the year before that was 28.88%. Staff also considered Thatcher's demonstrated ability to provide reliable deliveries and operationally compatible service. For these reasons, staff recommends award of a Contract to Thatcher Company of Nevada, Inc. for Fiscal Year 2026/2027 in the estimated amount of *$71,250, exclusive of sales tax. *The actual quantity and grand total may vary, but unit prices are firm. The Purchasing Manager has reviewed this item. SCHEDULE: July 1, 2026 through June 30, 2027 COSTS: $71,250 ACCOUNT NO: 20.26.4755 BUDGETED AMOUNT AVAILABLE: $70,000 IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ❑ Yes ❑ No N/A ATTACHMENTS: Quote from Thatcher Company of Nevada, Inc. CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Water GENERAL MANAGER: YESr NO CHIEF FINANCIAL OFFICER: YES NO THATCHER COMPANY OF NEVADA, INC. Phone (775) 358-0888 Fax (775) 358-0987 2302 Larkin Circle Sparks, NV 89431 [05/27/2026] South Tahoe Public Utility district Attn: Heidi Baugh Heidi: Please find below the current price schedule for the product(s) you requested. If you have any questions, feel free to contact me any time at the number(s) listed below. Thank you in advance for your business. Account Manager: Brian Karsok Email: Brian.Karsok@tchem.com Office: 775-358-0888 Mobile: 775-842-0102 (Best Way) Fax: 775-358-0987 Product Product Code Packaging Min. Qty. Price Description Sierra Sani 2202000 1 Gallon Bulk 4400 Gallons $5.50/Gallon Chlor(Bleach .5517/pound 4400 12.5%) Gallons Sierra sani 2202008 30 Gal Carboy 1200 Gallons $9.50/Gallon x Chlor 15 Gallon 30gaI = Carboy(12.5% $285.00/each Bleach) Minimum 40 Sierra Sani Sierra Sani Chlor Bulk 250 Gallons $.856/pound = Chlor Mini Bulk $8.50/Gallon Pump Off through (12,5% 06/30/2027 Bleach) All Product to be delivered FOB point of Delivery All inclusive PRICING IS GOOD THROUGH 06/30/2027 Payment Terms: Net 30 days from date of shipment Freight Terms: All products are priced FOB Delivery Point. The prices listed on this quotation are subject to change without notice. Please confirm your prices when p/acing your order. General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 4d TO: Board of Directors FROM: Chris Stanley, Field Operations Manager Jeremy Rutherdale, Field Operations Mechanical Technician Supervisor MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: 2026/2027 12.5% Sodium Hypochlorite Tote Supplies REQUESTED BOARD ACTION: (1) Award Contract for Fiscal Year 2026/2027 for the supply of 12.5% Sodium Hypochlorite totes to Thatcher Company of Nevada, Inc. at a unit price of $8.50 per gallon for an estimated annual amount of *$63,750, exclusive of sales tax; and (2) Utilize Exception No. 4 of the District's Purchasing Policy for this purchase. DISCUSSION: The District uses 12.5%Sodium Hypochlorite for water treatment operations to comply with applicable regulatory requirements. Sodium Hypochlorite is required to chlorinate well water and support continued compliance with Environmental Protection Agency and State Water Resources Control Board standards. Deliveries are required in mini bulk tote quantities and must be compatible with the District's station-specific transfer methods, including locations requiring pump-off service. The original Contract included four (4) one-year options to extend upon mutual agreement of the parties. Those extension options are no longer available. Accordingly, staff evaluated whether to issue a new competitive solicitation for Fiscal Year 2026/2027. Staff reviewed available pricing and bid information from other water agencies for comparable Sodium Hypochlorite supplies. Based on that review, together with the District's operational history, winter operations constraints, supplier reliability, and the need to ensure continuity of operations for a critical treatment chemical, staff determined that it is in the best interest of the District not to solicit new bids at this time. In prior contract performance, Brenntag was the low bidder and experienced recurring fulfillment issues that affected its ability to reliably meet the District's delivery requirements. Those performance issues became significant enough that Thatcher Company of Nevada, Inc., ultimately completed Brenntag's contractual obligation. Staff also reviewed other supplier capabilities and determined that Olin Chlor Alkali Products, the supplier of the District's bulk 12.5% Sodium Hypochlorite, was not willing to Chris Stanley June 18, 2026 Page 2 provide the tote deliveries with pump-off service required at the District's two stations that rely on those transfer methods. Based on this review, staff found that Thatcher Company of Nevada, Inc. is the only supplier both willing and capable of meeting the District's full operational requirements. The District would be utilizing Exception No. 4 of the District's Purchasing Policy: When the Board of Directors or General Manager determines that due to special circumstances, it is in the District's best interest to purchase an item or enter into a contract without compliance with the bidding procedures i.e. competitive proposals would not be useful, would not produce an advantage or would be undesirable, impractical or impossible. Special Circumstances include, but are not limited to, maintenance and inspection services and other situations where obtaining qualified bids is difficult, when there is limited number of qualified bidders, and/or where the type of services to be performed precludes the District from obtaining multiple bids. If a supplier cannot reliably meet the District's Sodium Hypochlorite delivery requirements, including winter delivery conditions and station-specific transfer needs, the District could face operational disruptions, compliance risk, and potential impacts to water service reliability. Maintaining a contract structure with a supplier that has demonstrated the ability to fulfill the District's complete requirements is therefore in the District's best interest. Staff reviewed the pricing offered by Thatcher Company of Nevada, Inc. and found it to be fair and reasonable considering current market conditions, the District's operational requirements, and the limited availability of suppliers able to fully perform this work. The proposed unit price of $8.50 per gallon represents a 5.59% increase over the prior year. Staff also considered Thatcher's demonstrated ability to provide reliable deliveries and operationally compatible service. For these reasons, staff recommends award of a Contract to Thatcher Company of Nevada, Inc. for Fiscal Year 2026/2027 in the estimated amount of *$63,750, exclusive of sales tax. *The actual quantity and grand total may vary, but unit prices are firm. The Purchasing Manager has reviewed this item. SCHEDULE: July 1, 2026 through June 30, 2027 COSTS: $63,750 ACCOUNT NO: 20.26.4755 BUDGETED AMOUNT AVAILABLE: $70,000 IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ❑ Yes ❑ No N/A ATTACHMENTS: Quote from Thatcher Company of Nevada, Inc. CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Water GENERAL MANAGER: YES /r NO CHIEF FINANCIAL OFFICER: YES NO THATCHER COMPANY OF NEVADA, INC. Phone (775) 358-0888 Fax (775) 358-0987 2302 Larkin Circle Sparks, NV 89431 [05/27/2026] South Tahoe Public Utility district Attn: Heidi Baugh Heidi: Please find below the current price schedule for the product(s) you requested. If you have any questions, feel free to contact me any time at the number(s) listed below. Thank you in advance for your business. Account Manager: Brian Karsok Email: Brian.Karsok@tchem.com Office: 775-358-0888 Mobile: 775-842-0102 (Best Way) Fax: 775-358-0987 Product Product Code Packaging Min. Qty. Price Description Sierra Sani 2202000 1 Gallon Bulk 4400 Gallons $5.50/Gallon Chlor(Bleach .5517/pound 4400 12.5%) Gallons Sierra sani 2202008 30 Gal Carboy 1200 Gallons $9.50/Gallon x Chlor 15 Gallon 30gaI = Carboy(12.5% $285.00/each Bleach) Minimum 40 Sierra Sani Sierra Sani Chlor Bulk 250 Gallons $.856/pound = Chlor Mini Bulk $8.50/Gallon Pump Off through (12,5% 06/30/2027 Bleach) All Product to be delivered FOB point of Delivery All inclusive PRICING IS GOOD THROUGH 06/30/2027 Payment Terms: Net 30 days from date of shipment Freight Terms: All products are priced FOB Delivery Point. The prices listed on this quotation are subject to change without notice. Please confirm your prices when p/acing your order. General Manager Paul Hughes Directors 44ex • 1950 • w$ South T Nick Haven Shane Romsos Joel Henderson_ Fublic Utility District Kelly Nick Exline _ I 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 4e TO: Board of Directors FROM: Greg Dupree, Accounting Manager MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: CaIPERS Required Pay Listing by Position REQUESTED BOARD ACTION: Adopt Resolution No. 3337-26 which incorporates the Pay Listing by Position for the Pay Listing effective June 4, 2026. DISCUSSION: California Public Employee's Retirement System (CaIPERS) requires each revision of a combined salary schedule listing all positions at the District be formally adopted by the Board of Directors. The listing must be retained by the District and must be available for public inspection for not less than five years. This revision includes the following changes: Title change from Underground Repair Water Supervisor to Chief Water Distribution Operator and an increase in salary. Increase in salary to Field Operations Mechanical Technician Supervisor. Both positions are now linked to Chief Plant Operator salary. SCHEDULE: Post Pay Listing effective June 04, 2026 on website upon approval COSTS: N/A ACCOUNT NO: N/A BUDGETED AMOUNT AVAILABLE: N/A IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ❑ Yes ❑ No N/A ATTACHMENTS: CaIPERS Pay Listing by Position 060426 CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer/Water GENERAL MANAGER: YES—Ad NO CHIEF FINANCIAL OFFICER: YES NO 1 RESOLUTION NO. 3337-26 2 A RESOLUTION BY THE BOARD OF DIRECTORS OF THE SOUTH TAHOE PUBLIC UTILITY DISTRICT FORMALLY 3 ADOPTING PAY LISTING BY POSITION FOR THE 4 EFFECTIVE DATE OF June 04, 2026 5 6 WHEREAS, the Board of Directors of South Tahoe Public Utility District and the 7 Board of Administration of California Public Employees' Retirement System entered into a Contract, effective June 19, 2003, and amended effective April 19, 2007, 8 providing for the participation of said public agency in the California Public 9 Employees' Retirement System; and, 10 WHEREAS, the Government Code and CCR, Title 2, Section 570.5 requires that ii one combined pay schedule, adopted by the Board of Directors, for every employee position, including the Board of Directors, be made available for public 12 inspection and retained for not less than five years; and 13 WHEREAS, the South Tahoe Public Utility District corrected Pay Listing by Position 14 for the effective date of June 04, 2026, is incorporated herein. 15 NOW, THEREFORE, BE IT RESOLVED that the Board of Directors of South Tahoe Public 16 Utility District hereby formally adopts the above-mentioned Resolution No. 3337-26 17 for the effective date of June 04, 2026. 18 WE, THE UNDERSIGNED, do hereby certify that the above and foregoing 19 Resolution was duly and regularly adopted and passed by the Board of Directors 20 of the South Tahoe Public Utility District at a Regular meeting held on the 18th day of June, 2026, by the following vote: 21 AYES: 22 23 NOES: 24 ABSENT: 25 Shane Romsos, Board President 26 South Tahoe Public Utility District 27 ATTEST: Melonie Guttry, Clerk of the Board/ 28 Executive Services Manager South Tahoe Public Utility District SOUTH TAHOE PUBLIC UTILITY DISTRICT ANNUAL SALARY SCHEDULE EFFECTIVE June 04, 2026 MINIMUM MAXIMUM ANNUAL ANNUAL ACCOUNT CLERK I 58,810.28 75,058.47 ACCOUNT CLERK II 65,599.69 83,723.68 ACCOUNTING MANAGER 138,514.47 176,783.47 ACCOUNTING SPECIALIST 73,152.40 93,363.06 ACCOUNTING SUPERVISOR 104,272.83 133,081.49 ACCOUNTING TECH I 66,498.85 84,871.26 ADMINISTRATIVE ANALYST/ASST CLERK OF THE BOARD 97,907.05 124,956.96 ADMINISTRATIVE ASST/ASST CLERK OF THE BOARD 72,268.97 92,235.55 ASSET MANAGEMENT PROGRAM ADMINISTRATOR 119,488.32 152,500.73 ASSOCIATE ENGINEER 124,469.99 158,858.75 ASST GENERAL MANAGER 196,854.36 251,241.58 CHIEF FINANCIAL OFFICER 185,056.81 236,184.60 CHIEF PLANT OPERATOR 129,954.65 165,858.73 CHIEF WATER DISTRIBUTION OPERATOR 129,954.65 165,858.73 COLLECTIONS & EFFLUENT OPERATIONS SUPERVISOR 129,954.65 165,858.73 COMPUTER AIDED DESIGN ANALYST I 72,124.48 92,051.15 COMPUTER AIDED DESIGN ANALYST II 96,653.79 123,357.44 CONTRACTS SPECIALIST 97,907.04 124,956.95 CUSTOMER ACCOUNTS SPECIALIST 74,393.23 94,946.71 CUSTOMER SERVICE MANAGER 134,070.04 171,111.12 CUSTOMER SERVICE REP I 56,394.52 71,975.29 CUSTOMER SERVICE REP II 62,908.85 80,289.40 CUSTOMER SERVICE SUPERVISOR 104,272.83 133,081.49 DIRECTOR OF ENGINEERING 188,105.96 240,076.17 DIRECTOR OF OPERATIONS 196,311.79 250,549.11 DIRECTOR OF PUBLIC AND LEGISLATIVE AFFAIRS 149,469.91 190,765.69 ELECTRICAL/INSTR SUPERVISOR 130,759.82 166,886.35 ELECTRICAL/INSTR TECH I 81,368.85 103,849.56 ELECTRICAL/INSTR TECH II 94,904.57 121,124.95 ENG/CAD/GIS ANALYST I 72,124.48 92,051.15 ENG/CAD/GIS ANALYST II 96,653.79 123,357.44 ENGINEERING INSPECTOR I 66,213.47 84,507.04 ENGINEERING INSPECTOR II 88,732.39 113,247.51 ENGINEERING INSPECTOR III 102,071.90 130,272.48 ENGINEERING MANAGER-CAPITAL PROJECTS 163,940.61 209,234.38 EXECUTIVE SERVICES MANAGER 123,855.09 158,073.97 FIELD OPERATIONS MECHANICAL TECHNICIAN I 72,070.55 91,982.32 FIELD OPERATIONS MECHANICAL TECHNICIAN II 88,204.40 112,573.65 Effective 06/04/2026 SOUTH TAHOE PUBLIC UTILITY DISTRICT ANNUAL SALARY SCHEDULE EFFECTIVE June 04, 2026 MINIMUM MAXIMUM ANNUAL ANNUAL FIELD OPERATIONS MECHANICAL TECHNICIAN LEAD 102,503.25 130,823.01 FIELD OPERATIONS MECHANICAL TECHNICIAN SUPERVISOR 129,954.65 165,858.73 FINANCE ASST 72,268.97 92,235.55 GENERAL MANAGER 253,924.72 324,079.44 GRANT ASSISTANT 73,152.40 93,363.06 GRANT COORDINATOR 121,386.19 154,922.96 GRANTS SPECIALIST 91,039.73 116,192.33 HR ANALYST 97,907.05 124,956.96 HR COORDINATOR 72,268.97 92,235.55 HUMAN RESOURCES DIRECTOR 166,922.99 213,040.74 INFO TECHNOLOGY MANAGER 150,500.12 192,080.53 INSPECTIONS SUPERVISOR 121,841.44 155,503.98 INSPECTOR I 72,129.46 92,057.50 INSPECTOR II 85,013.22 108,500.80 IT ANALYST I 79,359.37 101,284.90 IT ANALYST II 93,040.12 118,745.39 IT BUSINESS ANALYST I 105,035.65 134,055.06 IT BUSINESS ANALYST II 112,682.60 143,814.73 IT NETWORK ANALYST I 79,359.37 101,284.90 IT NETWORK ANALYST II 93,040.12 118,745.39 LAB ASST 59,013.89 75,318.34 LAB DIRECTOR 140,091.72 178,796.47 LAB TECH I 87,113.75 111,181.68 LAB TECH II 102,389.74 130,678.14 LT LAB QUALITY CONTROL OFFICER 49,176.59 62,763.17 MAINT MECHANIC TECH I 73,917.23 94,339.20 MAINT MECHANIC TECH II 87,015.75 111,056.59 MAINTENANCE SUPERVISOR 122,720.88 156,626.40 MANAGER OF FIELD OPERATIONS 153,997.82 196,544.58 MANAGER OF PLANT OPERATIONS 168,692.55 215,299.19 METER SERVICE TECH 72,129.46 92,057.50 NETWORK/TEL SYS ADMIN I 105,035.65 134,055.06 NETWORK/TEL SYS ADMIN II 112,682.60 143,814.73 OPERATIONS SUPERVISOR 107,712.25 137,471.15 OPERATOR IN TRAINING 35,359.41 35,359.41 PART TIME PERMANENT 21,789.29 27,809.26 PLANT OPERATOR I 73,621.27 93,961.47 PLANT OPERATOR I -Y RATE 94,897.29 94,897.29 Effective 06/04/2026 SOUTH TAHOE PUBLIC UTILITY DISTRICT ANNUAL SALARY SCHEDULE EFFECTIVE June 04, 2026 MINIMUM MAXIMUM ANNUAL ANNUAL PLANT OPERATOR III 93,052.61 118,761.33 PURCHASING MANAGER 123,855.09 158,073.97 SAFETY SPECIALIST 104,755.66 133,697.72 SEASONAL 21,789.29 27,809.26 SENIOR CUSTOMER SERVICE REP 74,393.23 94,946.71 SENIOR ENGINEER 139,772.17 178,388.64 SENIOR INSPECTOR 93,514.54 119,350.88 SHIPPING AND RECEIVING CLERK 70,005.99 89,347.36 STAFF ENGINEER I 91,960.89 117,367.98 STAFF ENGINEER II 105,797.52 135,027.43 UNDERGROUND REPAIR SEWER I 60,182.51 76,809.83 UNDERGROUND REPAIR SEWER II 74,354.51 94,897.29 UNDERGROUND REPAIR SEWER LEAD 83,846.37 107,011.57 UNDERGROUND REPAIR WATER I 60,182.51 76,809.83 UNDERGROUND REPAIR WATER II 74,354.51 94,897.29 UNDERGROUND REPAIR WATER LEAD 83,846.37 107,011.57 UTILITY PERSON I 49,673.07 63,396.82 UTILITY PERSON II 59,088.84 75,413.99 VEHICLE/HVY EQUIP MECH I 73,917.23 94,339.20 VEHICLE/HVY EQUIP MECH II 87,015.75 111,056.59 VEHICLE/HVY EQUIP MECH SUPERVISOR 107,422.91 137,101.89 WATER CONSERVATION SPECIALIST 82,499.91 105,293.11 WATER RESOURCES MANAGER 139,772.17 178,388.64 WATER REUSE LEAD 83,846.37 107,011.57 WATER REUSE LEAD-Y RATE 121,322.36 121,322.36 WATER REUSE MANAGER 138,046.59 176,186.31 WATER REUSE WORKER I 60,182.51 76,809.83 WATER REUSE WORKER II 74,354.51 94,897.29 Effective 06/04/2026 General Manager Paul Hughes Directors 44ex • 1950 • w$ te _ South T Nick Haven Shane Romsos Joel Henderson _ _ y Sheehan Fublic Utility District KellNick Exline _ I 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 4f TO: Board of Directors FROM: Greg Dupree, Accounting Manager MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: Sewer and Water Enterprise 2026/2027 Appropriations Subject to Limitation REQUESTED BOARD ACTION: Adopt Resolution No. 3338-26 setting the limitation on Appropriations for Fiscal Year 2026/2027. DISCUSSION: This is the District's annual Resolution called for by Constitutional Amendment XIIIB. The Amendment places a limit on the amount State and Local Governments can appropriate (spend) in any given year. The limit is calculated based on the previous year limit and is adjusted for changes in cost of living and population. The limitation on Appropriations for Fiscal Year 2026/2027 is $1 16,252,084. The Sewer and Water Enterprise fund budget for Fiscal Year 2026/2027 appropriates $89,367,166. As such, the District is $26,884,918 below the state mandated spending limit. SCHEDULE: Upon Board Approval COSTS: N/A ACCOUNT NO: N/A BUDGETED AMOUNT AVAILABLE: N/A IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): D Yes D No N/A ATTACHMENTS: Resolution No. 3338-26 and a calculation of permitted appropriation growth rate. CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer/Water GENERAL MANAGER: YES / L NO CHIEF FINANCIAL OFFICER: YES NO 1 RESOLUTION NO. 3338-26 2 A RESOLUTION BY THE BOARD OF DIRECTORS OF THE SOUTH TAHOE PUBLIC UTILITY DISTRICT 3 ADOPTING THE SEWER AND WATER ENTERPRISE FUNDS APPROPRIATIONS SUBJECT 4 TO LIMITATION AND PROCEEDS OF TAXES FOR FISCAL YEAR 2026/27 5 WHEREAS, the people of the State of California have elected to approve 6 Constitutional Amendment XIIIB, and the Legislature of the State of California has 7 voted to adopt Senate Bill No. 1352, which implements Constitutional Amendment XIIIB, setting the method of computing annual appropriations subject to limitation 8 of local non-residential construction and population; and, 9 WHEREAS, the Directors selected the change in per capital personal income; and, 10 WHEREAS, such legislation sets the base year for this computation as Fiscal Year 11 1978/79; and, 12 WHEREAS, such legislation required documentation setting such appropriation 13 limitations shall be available to the public fifteen days prior to the adoption of this Resolution; and, 14 WHEREAS, on June 2, 2026, such documentation was made public: 15 16 NOW, THEREFORE, BE IT RESOLVED, that the Board of Directors of the South Tahoe Public Utility District does find and declare that the appropriations subject to 17 limitation for Fiscal Year 2026/27 are $89,367,166; and that for Fiscal Year 2026/27, 18 the proceeds of taxes as defined in the enabling statutes are: $12,468,306; and that the increase in proceeds of taxes over the appropriations subject to limitations 19 is: $-0. 20 WE, THE UNDERSIGNED, do hereby certify that the above and foregoing Resolution 21 No. 3338-26 was duly and regularly adopted and passed by the Board of Directors of the South Tahoe Public Utility District at a Regular meeting held on the 18th day 22 of June 2026, by the following vote: 23 AYES: 24 NOES: 25 ABSENT: 26 Shane Romsos, Board Vice President South Tahoe Public Utility District 27 28 ATTEST: Melonie Guttry, Executive Services Manager/ Clerk of the Board South Tahoe Public Utility District SOUTH TAHOE PUBLIC UTILITY DISTRICT Permitted Growth Rate in Appropriations for 2026-27 Appropriation Limitation 2025-26 $111,097,175 Increase In CA Per Capita Personal Income 4.95 + 100= 1.0495 100 Increase In Population El Dorado County -0.29 + 100= 0.9971 100 Change Ratio 1.0495 x .9971 x 1.0464 Appropriations Limitation for 2026-27 $116,252,084 Actual Appropriations 2026-27 $89,367,166 Limitation Exceeding Actual Appropriations 2026-27 $26,884,918 Historical Appropriations Limitations & Proceeds Of Taxes Appropriation Limitation (Actual Appropriations $140 $120 $100 o $80 5 $60 E $40 $20 $0 2008-09 2010-11 2012-13 2014-15 2016-17 2018-19 2020-21 2022-23 2024-25 2026-27 007-08 009-10 011-12 013-14 015-16 017-18 019-20 021-22 023-24 025-26 Fiscal Year 2026-27 Actual Appropriations: Cash Expenditures $89,367,166 Depreciation $10,401,639 Total Expenditures $99,768,805 PAYMENT OF CLAIMS FOR APPROVAL June 18, 2026 Payroll 6/9/26 768,988.98 Total Payroll 768,988.98 ADP & Insight eTools 687.75 AFLAC/WageWorks claims and fees 384.40 Ameritas - Insurance Payments 6,651.28 Total Vendor EFT 7,723.43 Weekly Approved Check Batches Water Sewer Total Thursday, May 28, 2026 166,207.08 164,008.13 330,215.21 Wednesday, June 3, 2026 56,975.11 40,590.25 97,565.36 Wednesday, June 10, 2027 193,842.87 584,670.93 778,513.80 Checks, Voids and Reissues 7,723.43 Total Accounts Payable Checks 1,214,017.80 Utility Management Refunds 34,334.22 Total Utility Management Checks 34,334.22 Grand Total $2,025,064.43 Payroll EFTs & Checks 6/9/2026 EFT CA Employment Taxes &W/H 38,733.73 EFT Federal Employment Taxes &W/H 167,071.53 EFT CaIPERS Contributions 103,789.20 EFT Empower Retirement-Deferred Comp 29,362.17 EFT Stationary Engineers Union Dues 3,304.85 EFT CDHP Health Savings (HSA) 10,893.49 EFT Retirement Health Savings 23,252.02 EFT Employee Direct Deposits 389,396.32 CHK Employee Garnishments 273.22 CHK Employee Paychecks 2,912.45 Total 768,988.98 OVTH TgHO s Payment of Claims F -a-- Payment Date Range 05/28/26 - 06/10/26 ,% �" Report By Vendor - Invoice A&az er . 1950 • w��`C Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount Vendor 44199-ACME CONSTRUCTION SUPPLY S4915358.004 Field,Shop&Safety Supplies Paid by EFT#6961 05/05/2026 05/27/2026 05/31/2026 05/28/2026 231.51 Inventory S4933745.001 Field,Shop&Safety Supplies Paid by EFT#7031 05/26/2026 06/10/2026 05/31/2026 06/10/2026 44.37 Inventory Vendor 44199-ACME CONSTRUCTION SUPPLY Totals Invoices 2 $275.88 Vendor 43721-ACWA/]PIA 0709547 ACWA Medical/Vision Insurance Paid by EFT#7032 07/01/2026 06/10/2026 07/01/2026 06/10/2026 271,772.94 Vendor 43721-ACWA/]PIA Totals Invoices 1 $271,772.94 Vendor 50524-ADVANCED TRUCK BODY&EQUIPMENT CO 100259-P Automotive Paid by EFT#7033 05/13/2026 06/10/2026 05/31/2026 06/10/2026 936.49 Vendor 50524-ADVANCED TRUCK BODY&EQUIPMENT CO Totals Invoices 1 $936.49 Vendor 50479-ADVENTURE OUTDOORS NETWORK LLC 280 Public Relations Expense Paid by EFT#7034 06/02/2026 06/10/2026 06/30/2026 06/10/2026 2,086.00 Vendor 50479-ADVENTURE OUTDOORS NETWORK LLC Totals Invoices 1 $2,086.00 Vendor 44039-AFLAC 973261 Insurance Supplement Payable Paid by EFT#6962 05/01/2026 05/27/2026 05/31/2026 05/28/2026 653.94 Vendor 44039-AFLAC Totals Invoices 1 $653.94 Vendor 48605-AIRGAS USA LLC 9172103604 Field,Shop&Safety Supplies Paid by EFT#7035 05/18/2026 06/10/2026 05/31/2026 06/10/2026 640.33 Inventory 9172267038 Field,Shop&Safety Supplies Paid by EFT#7035 05/22/2026 06/10/2026 05/31/2026 06/10/2026 480.56 Inventory Vendor 48605-AIRGAS USA LLC Totals Invoices 2 $1,120.89 Vendor 50520-ALCON CONSTRUCTION&ENGINEERING INC 26-01B Asphalt Patching Contract Paid by Check#115419 05/31/2026 06/05/2026 05/31/2026 06/10/2026 6,749.13 26-01BR Asphalt Patching Contract Paid by Check#115419 05/31/2026 06/05/2026 05/31/2026 06/10/2026 (337.46) Retainage Vendor 50520-ALCON CONSTRUCTION&ENGINEERING INC Totals Invoices 2 $6,411.67 Vendor 43949-ALPEN SIERRA COFFEE ROASTING CO 255612 Office Supply Issues Paid by EFT#6963 05/19/2026 05/27/2026 05/31/2026 05/28/2026 75.75 255631 Office Supply Issues Paid by EFT#6963 05/19/2026 05/27/2026 05/31/2026 05/28/2026 136.50 Vendor 43949-ALPEN SIERRA COFFEE ROASTING CO Totals Invoices 2 $212.25 Vendor 49337-AMAZON CAPITAL SERVICES INC 1HPR-DLYF-FR3L Office Supplies Paid by EFT#7036 05/21/2026 06/10/2026 05/31/2026 06/10/2026 461.09 177V-YV1G-XW4M District Computer Supplies Paid by EFT#7036 05/22/2026 06/10/2026 05/31/2026 06/10/2026 15.21 1MMK-NC74-DXGK District Computer Supplies Paid by EFT#7036 05/28/2026 06/10/2026 05/31/2026 06/10/2026 180.48 1MHM-D1DT-CL9M District Computer Supplies Paid by EFT#7036 06/01/2026 06/10/2026 06/30/2026 06/10/2026 282.70 Vendor 49337-AMAZON CAPITAL SERVICES INC Totals Invoices 4 $939.48 Vendor 49951-ARIAT INTERNATIONAL INC 9003775754 Safety Equipment-Physicals Paid by EFT#6964 05/15/2026 05/27/2026 05/31/2026 05/28/2026 487.04 Vendor 49951-ARIAT INTERNATIONAL INC Totals Invoices 1 $487.04 Vendor 48000-AT&T/CALNET 3 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 1 of 14 OVTH TgHO s Payment of Claims F -a-- Payment Date Range 05/28/26 - 06/10/26 ,% �" Report By Vendor - Invoice A&az er . 1950 • w��`C Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 000025260126 Telephone Paid by EFT#7008 05/15/2026 06/03/2026 05/31/2026 06/03/2026 32.38 000025260127 Telephone Paid by EFT#7008 05/15/2026 06/03/2026 05/31/2026 06/03/2026 32.38 000025276993 Telephone Paid by EFT#6965 05/20/2026 05/27/2026 05/31/2026 05/28/2026 32.42 000025276995 Telephone Paid by EFT#7008 05/20/2026 06/03/2026 05/31/2026 06/03/2026 1,817.00 000025277249 Telephone Paid by EFT#6965 05/20/2026 05/27/2026 05/31/2026 05/28/2026 31.76 Vendor 48000-AT&T/CALNET 3 Totals Invoices 5 $1,945.94 Vendor 50103-AZUL ELECTRIC SUPPLY LLC 013413 Pump Stations Paid by EFT#7009 05/19/2026 06/03/2026 05/31/2026 06/03/2026 467.21 Vendor 50103-AZUL ELECTRIC SUPPLY LLC Totals Invoices 1 $467.21 Vendor 49339-BASEFORM INC 05252026-436 Pipe-Covers &Manholes Paid by EFT#7037 05/25/2026 06/10/2026 05/31/2026 06/10/2026 2,430.00 05252026-437 Pipe-Covers &Manholes Paid by EFT#7037 05/25/2026 06/10/2026 05/31/2026 06/10/2026 2,584.87 Vendor 49339-BASEFORM INC Totals Invoices 2 $5,014.87 Vendor 44109-BB&H BENEFIT DESIGNS 139830 Contractual Services Paid by EFT#7038 05/05/2026 06/10/2026 06/30/2026 06/10/2026 250.00 Vendor 44109-BB&H BENEFIT DESIGNS Totals Invoices 1 $250.00 Vendor 49773-LAUREN BENEFIELD EDUCATION #3 Tuition&Reimbursement Paid by EFT#6966 05/12/2026 05/27/2026 05/31/2026 05/28/2026 560.00 Program Vendor 49773-LAUREN BENEFIELD Totals Invoices 1 $560.00 Vendor 45009- BENTLY RANCH 214389 Biosolid Disposal Costs Paid by EFT#6967 05/08/2026 05/27/2026 05/31/2026 05/28/2026 1,347.90 214416 Biosolid Disposal Costs Paid by EFT#6967 05/13/2026 05/27/2026 05/31/2026 05/28/2026 1,062.75 214431 Biosolid Disposal Costs Paid by EFT#6967 05/19/2026 05/27/2026 05/31/2026 05/28/2026 1,350.30 Vendor 45009-BENTLY RANCH Totals Invoices 3 $3,760.95 Vendor 50356- BESST INC STPU033126 Test Wells(x3) Paid by EFT#7039 03/31/2026 06/10/2026 05/31/2026 06/10/2026 2,800.00 STPUD050526 Bakersfield Pump/Motor Paid by EFT#7039 05/05/2026 06/10/2026 05/31/2026 06/10/2026 23,097.00 Replacement Vendor 50356-BESST INC Totals Invoices 2 $25,897.00 Vendor 48291-BEST BEST&KRIEGER LLP 1058438 Legal-Regular Paid by EFT#6968 04/08/2026 05/27/2026 05/31/2026 05/28/2026 505.70 1061266 Legal-Regular&Special Projects Paid by EFT#7040 05/11/2026 06/10/2026 05/31/2026 06/10/2026 3,656.60 Vendor 48291-BEST BEST&KRIEGER LLP Totals Invoices 2 $4,162.30 Vendor 49861-AARON BUCKMAN 215932 Supplies Paid by EFT#7010 05/27/2026 06/03/2026 05/31/2026 06/03/2026 200.00 Vendor 49861-AARON BUCKMAN Totals Invoices 1 $200.00 Vendor 48681-CADENCE TEAM INC 5115 Network Improvements Paid by EFT#7041 05/29/2026 06/10/2026 06/30/2026 06/10/2026 10,773.43 Vendor 48681-CADENCE TEAM INC Totals Invoices 1 $10,773.43 Vendor 48767-CALIFORNIA LAB SERVICE 6050346 Monitoring Paid by EFT#7011 05/11/2026 06/03/2026 05/31/2026 06/03/2026 89.00 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 2 of 14 OVTH TgHO s Payment of Claims F _ Payment Date Range 05/28/26 - 06/10/26 s" Report By Vendor - Invoice A&az er . 1 950 � W •��`0 Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount Vendor 48767-CALIFORNIA LAB SERVICE Totals Invoices 1 $89.00 Vendor 12643-CALIFORNIA SURVEY 91669071 Line Locator Paid by EFT#7042 05/22/2026 06/10/2026 06/30/2026 06/10/2026 8,272.45 Vendor 12643-CALIFORNIA SURVEY Totals Invoices 1 $8,272.45 Vendor 42328-CDW-G CORP AJ3IL5H Public Relations Expense Paid by EFT#6969 05/12/2026 05/27/2026 05/31/2026 05/28/2026 706.95 AJ3UM3M District Computer Supplies Paid by EFT#6969 05/13/2026 05/27/2026 05/31/2026 05/28/2026 758.41 AJ31R6N Office Supplies Paid by EFT#7043 05/14/2026 06/10/2026 05/31/2026 06/10/2026 875.56 AJ31R6T Laboratory Equipment Paid by EFT#6969 05/14/2026 05/27/2026 05/31/2026 05/28/2026 2,470.33 AJ32N5M Office Supplies Paid by EFT#6969 05/15/2026 05/27/2026 05/31/2026 05/28/2026 487.65 AJ32W9M Office Supplies Paid by EFT#7043 05/15/2026 06/10/2026 05/31/2026 06/10/2026 5,315.37 AJ38J7F Office Supplies Paid by EFT#7043 05/16/2026 06/10/2026 05/31/2026 06/10/2026 1,239.54 AJ38T5N Laboratory Equipment Paid by EFT#7043 05/18/2026 06/10/2026 05/31/2026 06/10/2026 202.98 AJ4SE7S Service Contracts Paid by EFT#7043 05/21/2026 06/10/2026 05/31/2026 06/10/2026 179.74 AJ4219R Backup Power Server Room Paid by EFT#7012 05/22/2026 06/03/2026 05/31/2026 06/03/2026 8,479.26 AJ4X32D Travel-Meetings- Education Paid by EFT#7043 05/22/2026 06/10/2026 05/31/2026 06/10/2026 989.56 AJ4575K Public Relations Expense Paid by EFT#7043 05/26/2026 06/10/2026 05/31/2026 06/10/2026 158.34 Vendor 42328-CDW-G CORP Totals Invoices 12 $21,863.69 Vendor 50525-CARLINO CECILIO 3358120 Turf Buy-Back Program Paid by EFT#6970 05/21/2026 05/27/2026 05/31/2026 05/28/2026 3,000.00 Vendor 50525-CARLINO CECILIO Totals Invoices 1 $3,000.00 Vendor 49934-SHANNON CHANDLER TRAVELEXP 052126 Travel-Meetings-Education Paid by EFT#6971 05/22/2026 05/27/2026 05/31/2026 05/28/2026 944.21 Vendor 49934-SHANNON CHANDLER Totals Invoices 1 $944.21 Vendor 12535-CITY OF SOUTH LAKE TAHOE ENCR0226-0005 Meter Installations Final Phase Paid by Check#115420 06/05/2026 06/10/2026 06/30/2026 06/10/2026 8,119.25 Vendor 12535-CITY OF SOUTH LAKE TAHOE Totals Invoices 1 $8,119.25 Vendor 50442-CIVIA INC INV-0214 Service Contracts Paid by EFT#7013 05/07/2026 06/03/2026 05/31/2026 06/03/2026 7,950.00 Vendor 50442-CIVIA INC Totals Invoices 1 $7,950.00 Vendor 40512-CODALE ELECTRIC SUPPLY S009711034.002 Al Tahoe/Bayview Backup Power Paid by EFT#7044 06/01/2026 06/10/2026 06/30/2026 06/10/2026 (6,210.58) S009927511.001 Al Tahoe/Bayview Backup Power Paid by EFT#7044 06/01/2026 06/10/2026 06/30/2026 06/10/2026 11,185.62 Vendor 40512-CODALE ELECTRIC SUPPLY Totals Invoices 2 $4,975.04 Vendor 13643-COLE-PARMER INSTRUMENT CO 4262846 Laboratory Equipment Paid by EFT#6972 05/14/2026 05/27/2026 05/31/2026 05/28/2026 292.70 4263887 Laboratory Equipment Paid by EFT#6972 05/15/2026 05/27/2026 05/31/2026 05/28/2026 669.44 Vendor 13643-COLE-PARMER INSTRUMENT CO Totals Invoices 2 $962.14 Vendor 50526-KEVIN CONRY 3352110 Water Use Reduction Rebates Paid by EFT#6973 05/20/2026 05/27/2026 05/31/2026 05/28/2026 750.00 Vendor 50526-KEVIN CONRY Totals Invoices 1 $750.00 Vendor 48181-CONSTRUCTION MATERIALS ENG INC Run by Erika Franco on 06/10/2026 02:21:31 PM Page 3 of 14 el" TANO Payment of Claims _ Payment Date Range 05/28/26 - 06/10/26 s" �" e� Report By Vendor - Invoice A&az i'Ver • 1 950 • w��`G� Summary Listing G UTILITY p18 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 20325 Tank Coatings-Stateline No. 1 Paid by EFT#7014 05/09/2026 06/03/2026 05/31/2026 06/03/2026 562.50 Vendor 48181-CONSTRUCTION MATERIALS ENG INC Totals Invoices 1 $562.50 Vendor 50279-COONS CONSTRUCTION LLC C26-0700 Base,Spoils,and Hauling Paid by EFT#7015 05/14/2026 06/03/2026 05/31/2026 06/03/2026 7,794.25 Vendor 50279-COONS CONSTRUCTION LLC Totals Invoices 1 $7,794.25 Vendor 42897-CWEA 352566 MT3 2026 Dues-Memberships- Paid by Check#115398 05/07/2026 05/27/2026 05/31/2026 05/28/2026 124.00 Certification Vendor 42897-CWEA Totals Invoices 1 $124.00 Vendor 50328-D&H WATER SYSTEMS INC I2026-0864 Heavenly Tank Mixer System Paid by EFT#6974 05/18/2026 05/27/2026 05/31/2026 05/28/2026 20,711.44 Vendor 50328-D&H WATER SYSTEMS INC Totals Invoices 1 $20,711.44 Vendor 48471-DIAMOND DOOR DOOR DEPOSIT 26 Buildings Paid by Check#115421 05/27/2026 06/10/2026 06/30/2026 06/10/2026 843.68 Vendor 48471-DIAMOND DOOR Totals Invoices 1 $843.68 Vendor 48289-DIY HOME CENTER May 26 Stmt Buildings&Shop Supplies Paid by EFT#7045 05/31/2026 06/10/2026 05/31/2026 06/10/2026 1,579.58 Vendor 48289-DIY HOME CENTER Totals Invoices 1 $1,579.58 Vendor 49959-DUDEK 202604970 Grounds&Maintenance Paid by EFT#7046 05/27/2026 06/10/2026 05/31/2026 06/10/2026 2,983.08 Vendor 49959-DUDEK Totals Invoices 1 $2,983.08 Vendor 50515-E]USA INC 110260029988 Grounds&Maintenance Paid by EFT#7047 05/07/2026 06/10/2026 06/30/2026 06/10/2026 2,896.77 Vendor 50515-E]USA INC Totals Invoices 1 $2,896.77 Vendor 45227-EMPIRE SAFETY&SUPPLY 0131227-IN Field,Shop&Safety Supplies Paid by EFT#7048 05/26/2026 06/10/2026 06/30/2026 06/10/2026 927.89 Inventory Vendor 45227-EMPIRE SAFETY&SUPPLY Totals Invoices 1 $927.89 Vendor 44263- ENS RESOURCES INC 10091 Public Relations Expense Paid by EFT#7049 06/07/2026 06/10/2026 05/31/2026 06/10/2026 5,500.00 Vendor 44263-ENS RESOURCES INC Totals Invoices 1 $5,500.00 Vendor 42100-ENVIRONMENTAL RESOURCES ASSO 147841 Laboratory Supplies Paid by EFT#7050 05/15/2026 06/10/2026 05/31/2026 06/10/2026 77.65 Vendor 42100-ENVIRONMENTAL RESOURCES ASSO Totals Invoices 1 $77.65 Vendor 50402-ERROL L MONTGOMERY&ASSOCIATES INC 6710-26-1A Sunset Well Reconstruction Paid by EFT#6975 03/31/2026 05/27/2026 05/31/2026 05/28/2026 7,922.00 6710-26-1B Tanglewood Well(New Supply) Paid by EFT#6975 03/31/2026 05/27/2026 05/31/2026 05/28/2026 4,332.50 Vendor 50402- ERROL L MONTGOMERY&ASSOCIATES INC Totals Invoices 2 $12,254.50 Vendor 50501-EST ANALYTICAL I101862 Replace Discreet Analyzer Paid by EFT#7051 04/30/2026 06/10/2026 05/31/2026 06/10/2026 88,102.07 Vendor 50501-EST ANALYTICAL Totals Invoices 1 $88,102.07 Vendor 18550-EUROFINS EATON ANALYTICAL LLC Run by Erika Franco on 06/10/2026 02:21:31 PM Page 4 of 14 yoV•rH Tgho F Payment of Claims _ _ Payment Date Range 05/28/26 - 06/10/26 se~ "�e� Report By Vendor - Invoice Summary Listing ' A`B ker 1950 W 'C UTILITY 1:01 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 3800122592 Monitoring Paid by EFT#7016 04/10/2026 06/03/2026 05/31/2026 06/03/2026 41.20 3800125384 Monitoring Paid by EFT#7016 04/29/2026 06/03/2026 05/31/2026 06/03/2026 41.20 3800127547 Monitoring Paid by EFT#7016 05/18/2026 06/03/2026 05/31/2026 06/03/2026 41.20 3800128300 Monitoring Paid by EFT#7016 05/22/2026 06/03/2026 05/31/2026 06/03/2026 1,909.62 3800128314 Monitoring Paid by EFT#7016 05/22/2026 06/03/2026 05/31/2026 06/03/2026 10.61 Vendor 18550-EUROFINS EATON ANALYTICAL LLC Totals Invoices 5 $2,043.83 Vendor 14890-FEDEX 9-299-17575 Postage Expenses Paid by EFT#6976 05/15/2026 05/27/2026 05/31/2026 05/28/2026 125.93 9-307-84686 Postage Expenses Paid by EFT#7017 05/22/2026 06/03/2026 05/31/2026 06/03/2026 125.29 Vendor 14890- FEDEX Totals Invoices 2 $251.22 Vendor 48715-FLEETCREW-ANELLE MGMT SRV 66404 Service Contracts Paid by EFT#7052 05/20/2026 06/10/2026 05/31/2026 06/10/2026 1,178.00 Vendor 48715-FLEETCREW-ANELLE MGMT SRV Totals Invoices 1 $1,178.00 Vendor 48402-FLYERS ENERGY LLC 26-637403 Gasoline&Diesel Fuel Inventory Paid by EFT#7018 05/20/2026 06/03/2026 05/31/2026 06/03/2026 8,785.88 Vendor 48402-FLYERS ENERGY LLC Totals Invoices 1 $8,785.88 Vendor 43111-GFS CHEMICALS INC CINV-185066 Laboratory Supplies Paid by EFT#7053 05/18/2026 06/10/2026 05/31/2026 06/10/2026 53.91 Vendor 43111-GFS CHEMICALS INC Totals Invoices 1 $53.91 Vendor 48837- BRENT GOLIGOSKI PER DIEM 061926 Travel-Meetings- Education Paid by EFT#6977 04/10/2026 05/27/2026 06/30/2026 05/28/2026 529.00 Vendor 48837-BRENT GOLIGOSKI Totals Invoices 1 $529.00 Vendor 15600-GRAINGER 9912625010 Pump Stations Paid by EFT#6978 05/12/2026 05/27/2026 05/31/2026 05/28/2026 887.25 9912725729 Pump Stations Paid by EFT#6978 05/12/2026 05/27/2026 05/31/2026 05/28/2026 259.84 9917857444 Buildings Paid by EFT#6978 05/15/2026 05/27/2026 05/31/2026 05/28/2026 446.43 9920032589 Wells Paid by EFT#6978 05/18/2026 05/27/2026 05/31/2026 05/28/2026 757.68 9920303857 Wells Paid by EFT#6978 05/18/2026 05/27/2026 05/31/2026 05/28/2026 74.82 9922120473 Field,Shop&Safety Supplies Paid by EFT#7054 05/19/2026 06/10/2026 05/31/2026 06/10/2026 213.96 Inventory 9924233100 Safety Equipment-Physicals Paid by EFT#7054 05/20/2026 06/10/2026 05/31/2026 06/10/2026 995.74 9924433304 Small Tools Paid by EFT#7054 05/21/2026 06/10/2026 05/31/2026 06/10/2026 183.91 9924659635 Shop Supplies Paid by EFT#7054 05/21/2026 06/10/2026 05/31/2026 06/10/2026 93.15 9924675565 Automotive Paid by EFT#7054 05/21/2026 06/10/2026 05/31/2026 06/10/2026 199.23 9925788102 Grounds&Maintenance Paid by EFT#7054 05/21/2026 06/10/2026 05/31/2026 06/10/2026 598.92 9937325703 Safety Equipment-Physicals Paid by EFT#7054 06/02/2026 06/10/2026 06/30/2026 06/10/2026 1,837.10 Vendor 15600-GRAINGER Totals Invoices 12 $6,548.03 Vendor 15800-HACH CO 15012922 Other Supplies Paid by EFT#7055 05/21/2026 06/10/2026 05/31/2026 06/10/2026 543.36 Vendor 15800-HACH CO Totals Invoices 1 $543.36 Vendor 48332-HDR ENGINEERING INC 1200830003 Contractual Services Paid by EFT#7056 05/28/2026 06/10/2026 05/31/2026 06/10/2026 7,895.75 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 5 of 14 OVTH TgHO s Payment of Claims F -a-- Payment Date Range 05/28/26 - 06/10/26 ,% �" Report By Vendor - Invoice A&az er . 1 950 � Nisi��`C Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount Vendor 48332-HDR ENGINEERING INC Totals Invoices 1 $7,895.75 Vendor 50529-JACLYN HERNANDEZ 2708404 Turf Buy-Back Program Paid by EFT#7019 05/22/2026 06/03/2026 05/31/2026 06/03/2026 896.00 Vendor 50529-JACLYN HERNANDEZ Totals Invoices 1 $896.00 Vendor 49604- HOUSTON MAGNANI AND ASSOCIATES 8074 Public Relations Expense Paid by EFT#7057 05/29/2026 06/10/2026 05/31/2026 06/10/2026 800.00 Vendor 49604-HOUSTON MAGNANI AND ASSOCIATES Totals Invoices 1 $800.00 Vendor 49984-IBIS SCIENTIFIC LLC IN089755 Laboratory Supplies Paid by EFT#7058 05/06/2026 06/10/2026 05/31/2026 06/10/2026 563.26 Vendor 49984-IBIS SCIENTIFIC LLC Totals Invoices 1 $563.26 Vendor 43208-IN-SITU INC INV126448 Laboratory Supplies Paid by EFT#7059 05/20/2026 06/10/2026 05/31/2026 06/10/2026 243.28 Vendor 43208-IN-SITU INC Totals Invoices 1 $243.28 Vendor 48056-INFOSEND INC 311300 Printing&Postage Expenses Paid by EFT#7060 05/31/2026 06/10/2026 05/31/2026 06/10/2026 12,070.40 Vendor 48056-INFOSEND INC Totals Invoices 1 $12,070.40 Vendor 50123-INLAND SUPPLY CO INC 1117975 Janitorial Supplies Inventory Paid by EFT#7061 05/21/2026 06/10/2026 05/31/2026 06/10/2026 1,225.29 Vendor 50123-INLAND SUPPLY CO INC Totals Invoices 1 $1,225.29 Vendor 48193-INSTRUMENT TECHNOLOGY CORP 27092 Small Tools Paid by EFT#6979 05/06/2026 05/27/2026 05/31/2026 05/28/2026 3,736.63 Vendor 48193-INSTRUMENT TECHNOLOGY CORP Totals Invoices 1 $3,736.63 Vendor 44110-J&L PRO KLEEN INC 40279 Janitorial Services Paid by EFT#7020 05/18/2026 06/03/2026 05/31/2026 06/03/2026 7,000.00 Vendor 44110-J&L PRO KLEEN INC Totals Invoices 1 $7,000.00 Vendor 47947-JACK HENRY&ASSOC.INC 5268715 Service Contracts Paid by EFT#7021 04/30/2026 06/03/2026 05/31/2026 06/03/2026 315.48 Vendor 47947-JACK HENRY&ASSOC.INC Totals Invoices 1 $315.48 Vendor 45141-KAESER COMPRESSORS INC 918263260 Grounds&Maintenance Paid by EFT#6980 04/07/2026 05/27/2026 05/31/2026 05/28/2026 1,562.72 Vendor 45141-KAESER COMPRESSORS INC Totals Invoices 1 $1,562.72 Vendor 40821-KENNEDY JENKS CONSULTANTS INC 187944 Al Tahoe/Bayview Backup Power Paid by EFT#6981 05/18/2026 05/27/2026 05/31/2026 05/28/2026 10,753.60 &Al Tahoe Well Rehab Vendor 40821-KENNEDY JENKS CONSULTANTS INC Totals Invoices 1 $10,753.60 Vendor 43694-KIMBALL MIDWEST 104429341 Shop Supplies Paid by EFT#6982 05/01/2026 05/27/2026 05/31/2026 05/28/2026 551.91 104452156 Shop Supplies Paid by EFT#6982 05/11/2026 05/27/2026 05/31/2026 05/28/2026 (551.91) 104452182 Shop Supplies&Small Tools Paid by EFT#6982 05/11/2026 05/27/2026 05/31/2026 05/28/2026 559.63 Vendor 43694-KIMBALL MIDWEST Totals Invoices 3 $559.63 Vendor 49725-LAKESIDE TERMITE&PEST CONTROL 019242705 Buildings Paid by EFT#6983 05/20/2026 05/27/2026 05/31/2026 05/28/2026 150.00 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 6 of 14 yoV•rH TAho F Payment of Claims _ _ Payment Date Range 05/28/26 - 06/10/26 ,9~ ke Report By Vendor - Invoice IAGIC Summary Listing A`B Giver 1950 W c/C UTILITY 001 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount Vendor 49725- LAKESIDE TERMITE&PEST CONTROL Totals Invoices 1 $150.00 Vendor 22200-LANGENFELD ACE HARDWARE May 26 Stmt Buildings&Shop Supplies Paid by EFT#7062 05/31/2026 06/10/2026 05/31/2026 06/10/2026 654.26 Vendor 22200- LANGENFELD ACE HARDWARE Totals Invoices 1 $654.26 Vendor 50527-ANDREW LEONARD 2603509 Water Use Reduction Rebates Paid by EFT#6984 05/20/2026 05/27/2026 05/31/2026 05/28/2026 360.00 Vendor 50527-ANDREW LEONARD Totals Invoices 1 $360.00 Vendor 22550-LIBERTY UTILITIES 200008909950 426 Electricity Paid by Check#115399 05/07/2026 05/27/2026 05/31/2026 05/28/2026 726.27 200008913150 426 Electricity Paid by Check#115399 05/07/2026 05/27/2026 05/31/2026 05/28/2026 80.53 200008913333 426 Electricity Paid by Check#115399 05/07/2026 05/27/2026 05/31/2026 05/28/2026 784.45 200008913713 426 Electricity Paid by Check#115399 05/07/2026 05/27/2026 05/31/2026 05/28/2026 255.25 200008928034 426 Electricity Paid by Check#115400 05/07/2026 05/27/2026 05/31/2026 05/28/2026 6,793.52 2000089X3226 426 Electricity Paid by Check#115399 05/07/2026 05/27/2026 05/31/2026 05/28/2026 501.29 200016639524 426 Electricity Paid by Check#115399 05/07/2026 05/27/2026 05/31/2026 05/28/2026 4,067.75 200008898161 426 Electricity Paid by Check#115400 05/08/2026 05/27/2026 05/31/2026 05/28/2026 78.34 200008899078 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 11.91 200008899169 426 Electricity Paid by Check#115402 05/08/2026 06/03/2026 05/31/2026 06/03/2026 2.47 200008899391 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 320.74 200008899649 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 83.79 200008913424 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 417.56 200008913614 526 Electricity Paid by Check#115403 05/08/2026 06/03/2026 05/31/2026 06/03/2026 9.58 200008913887 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 130.38 200008919025 426 Electricity Paid by Check#115400 05/08/2026 05/27/2026 05/31/2026 05/28/2026 668.35 200008937027 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 4.63 200009089042 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 5.73 200009089216 426 Electricity Paid by Check#115399 05/08/2026 05/27/2026 05/31/2026 05/28/2026 .61 200008899490 426 Electricity Paid by Check#115400 05/11/2026 05/27/2026 05/31/2026 05/28/2026 8,391.02 200008904860 426 Electricity Paid by Check#115399 05/11/2026 05/27/2026 05/31/2026 05/28/2026 824.51 200008913051 426 Electricity Paid by Check#115399 05/11/2026 05/27/2026 05/31/2026 05/28/2026 376.81 200008919215 426 Electricity Paid by Check#115400 05/11/2026 05/27/2026 05/31/2026 05/28/2026 642.50 200008919983 426 Electricity Paid by Check#115399 05/11/2026 05/27/2026 05/31/2026 05/28/2026 3,580.76 200008923076 426 Electricity Paid by Check#115399 05/11/2026 05/27/2026 05/31/2026 05/28/2026 8,974.79 200008913952 426 Electricity Paid by Check#115399 05/12/2026 05/27/2026 05/31/2026 05/28/2026 88.54 200008919124 426 Electricity Paid by Check#115400 05/12/2026 05/27/2026 05/31/2026 05/28/2026 813.58 200008919298 426 Electricity Paid by Check#115399 05/12/2026 05/27/2026 05/31/2026 05/28/2026 220.65 200008923183 426 Electricity Paid by Check#115400 05/12/2026 05/27/2026 05/31/2026 05/28/2026 866.00 200008932903 426 Electricity Paid by Check#115400 05/12/2026 05/27/2026 05/31/2026 05/28/2026 2,655.02 200008904415 A26 Electricity Paid by Check#115400 05/13/2026 05/27/2026 05/31/2026 05/28/2026 7,644.77 200008919389 426 Electricity Paid by Check#115399 05/13/2026 05/27/2026 05/31/2026 05/28/2026 478.73 200008923282 426 Electricity Paid by Check#115400 05/13/2026 05/27/2026 05/31/2026 05/28/2026 8,627.03 200008904753 426 Electricity Paid by Check#115399 05/14/2026 05/27/2026 05/31/2026 05/28/2026 1,148.42 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 7 of 14 u�� Ta"� s Payment of Claims F _ Payment Date Range 05/28/26 - 06/10/26 syy W'"p ec Report By Vendor - Invoice AGezIn er . 1 95U �`G� Summary Listing UTILITY 0181 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 200008923498 426 Electricity Paid by Check#115399 05/14/2026 05/27/2026 05/31/2026 05/28/2026 2,648.05 200008928612 426 Electricity Paid by Check#115400 05/15/2026 05/27/2026 05/31/2026 05/28/2026 7,291.81 200008937159 426 Electricity Paid by Check#115400 05/15/2026 05/27/2026 05/31/2026 05/28/2026 124.20 200008895860 526 Electricity Paid by Check#115400 05/18/2026 05/27/2026 05/31/2026 05/28/2026 526.42 200008895969 426 Electricity Paid by Check#115400 05/18/2026 05/27/2026 05/31/2026 05/28/2026 8,338.09 200008919454 426 Electricity Paid by Check#115400 05/18/2026 05/27/2026 05/31/2026 05/28/2026 65.41 200008928315 426 Electricity Paid by Check#115403 05/18/2026 06/03/2026 05/31/2026 06/03/2026 12,444.41 200008923563 526 Electricity Paid by Check#115403 05/19/2026 06/03/2026 05/31/2026 06/03/2026 4,301.93 200008904043 526 Electricity Paid by Check#115403 05/20/2026 06/03/2026 05/31/2026 06/03/2026 605.37 200008919538 426 Electricity Paid by Check#115402 05/20/2026 06/03/2026 05/31/2026 06/03/2026 10.84 200008919603 526 Electricity Paid by Check#115403 05/20/2026 06/03/2026 05/31/2026 06/03/2026 419.75 200008923399 526 Electricity Paid by Check#115402 05/20/2026 06/03/2026 05/31/2026 06/03/2026 4,395.15 200008895654 526 Electricity Paid by Check#115402 05/26/2026 06/03/2026 05/31/2026 06/03/2026 1,506.97 200008895761 526 Electricity Paid by Check#115402 05/26/2026 06/03/2026 05/31/2026 06/03/2026 730.59 200008923795 526 Electricity Paid by Check#115402 05/26/2026 06/03/2026 05/31/2026 06/03/2026 326.93 200008932457 526 Electricity Paid by Check#115402 05/26/2026 06/03/2026 05/31/2026 06/03/2026 27.84 200008932747 526 Electricity Paid by Check#115402 05/26/2026 06/03/2026 05/31/2026 06/03/2026 86.25 200008909257 526 Electricity Paid by Check#115403 05/28/2026 06/03/2026 05/31/2026 06/03/2026 2,414.39 200008928828 526 Electricity Paid by Check#115403 05/28/2026 06/03/2026 05/31/2026 06/03/2026 69.62 200008932168 526 Electricity Paid by Check#115403 05/28/2026 06/03/2026 05/31/2026 06/03/2026 4,449.21 Vendor 22550-LIBERTY UTILITIES Totals Invoices 54 $111,059.51 Vendor 49065-LIFE TECHNOLOGIES CORPORATION 89027966 Laboratory Equipment Paid by EFT#6985 05/13/2026 05/27/2026 05/31/2026 05/28/2026 7,746.21 Vendor 49065-LIFE TECHNOLOGIES CORPORATION Totals Invoices 1 $7,746.21 Vendor 47903-LINDE GAS&EQUIPMENT INC 56798419 Buildings Paid by EFT#7022 05/21/2026 06/03/2026 05/31/2026 06/03/2026 779.44 56815116 Shop Supplies Paid by EFT#7022 05/21/2026 06/03/2026 05/31/2026 06/03/2026 80.35 Vendor 47903-LINDE GAS&EQUIPMENT INC Totals Invoices 2 $859.79 Vendor 45059-LUMOS&ASSOCIATES 132253 Meter Installations Final Phase Paid by EFT#7063 05/20/2026 06/10/2026 05/31/2026 06/10/2026 2,485.00 Vendor 45059-LUMOS&ASSOCIATES Totals Invoices 1 $2,485.00 Vendor 21701-MCCLATCHY COMPANY LLC IN144572 Keys CIPP Project Paid by EFT#6986 04/30/2026 05/27/2026 05/31/2026 05/28/2026 1,297.82 Vendor 21701-MCCLATCHY COMPANY LLC Totals Invoices 1 $1,297.82 Vendor 18150-MEEKS BUILDING SOLUTIONS 5163195 Pipe-Covers &Manholes Paid by EFT#7023 05/05/2026 06/03/2026 05/31/2026 06/03/2026 1,187.12 May 26 Stmt Buildings&Pump Stations Paid by EFT#7064 05/31/2026 06/10/2026 05/31/2026 06/10/2026 677.94 Vendor 18150-MEEKS BUILDING SOLUTIONS Totals Invoices 2 $1,865.06 Vendor 48329-MICHAEL HOHL MOTOR COMPANY 5608405 Automotive Paid by EFT#7065 06/04/2026 06/10/2026 06/30/2026 06/10/2026 203.32 Vendor 48329-MICHAEL HOHL MOTOR COMPANY Totals Invoices 1 $203.32 Vendor 43889-MME MUNICIPAL MAINTENANCE Run by Erika Franco on 06/10/2026 02:21:31 PM Page 8 of 14 OVTH TgHO e Payment of Claims F Payment Date Range 05/28/26 - 06/10/26 s" �" Report By Vendor - Invoice A&e, er . 1950 � w- oc, Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 049345 Automotive Paid by EFT#7066 05/13/2026 06/10/2026 05/31/2026 06/10/2026 1,839.60 Vendor 43889-MME MUNICIPAL MAINTENANCE Totals Invoices 1 $1,839.60 Vendor 50372- N&S TRACTOR IP02686 Automotive Paid by EFT#7067 05/22/2026 06/10/2026 06/30/2026 06/10/2026 71.52 Vendor 50372-N&S TRACTOR Totals Invoices 1 $71.52 Vendor 49765-NAPA AUTO PARTS 801770 Field,Shop&Safety Supplies Paid by EFT#7068 05/21/2026 06/10/2026 05/31/2026 06/10/2026 179.05 Inventory May 26 Stmt Automotive&Shop Supplies Paid by EFT#7068 05/31/2026 06/10/2026 05/31/2026 06/10/2026 3,755.49 Vendor 49765-NAPA AUTO PARTS Totals Invoices 2 $3,934.54 Vendor 49014- NATIONAL AUTO FLEET GROUP WF14940B Replace Truck#50-Water Reuse Paid by Check#115422 12/03/2025 06/10/2026 06/30/2026 06/10/2026 35,467.57 Vendor 49014-NATIONAL AUTO FLEET GROUP Totals Invoices 1 $35,467.57 Vendor 49208- NEVADA NEWS GROUP 57956 Ads-Legal Notices Paid by EFT#6987 02/28/2026 05/27/2026 05/31/2026 05/28/2026 325.00 Vendor 49208-NEVADA NEWS GROUP Totals Invoices 1 $325.00 Vendor 50281-NEXGEN ASSET MGMT 5087 CMMS Implementation Paid by EFT#6988 11/12/2025 05/27/2026 05/31/2026 05/28/2026 18,480.00 Vendor 50281-NEXGEN ASSET MGMT Totals Invoices 1 $18,480.00 Vendor 48315-O'REILLY AUTO PARTS May 26 Stmt Mobile Equipment Paid by EFT#7069 05/28/2026 06/10/2026 05/31/2026 06/10/2026 39.13 Vendor 48315-O'REILLY AUTO PARTS Totals Invoices 1 $39.13 Vendor 44607-OLIN PIONEER AMERICAS LLC 900725245 Hypochlorite Paid by EFT#7070 05/29/2026 06/10/2026 06/30/2026 06/10/2026 14,658.65 Vendor 44607-OLIN PIONEER AMERICAS LLC Totals Invoices 1 $14,658.65 Vendor 49997-PACIFIC STEEL&RECYCLING 9357445 Pipe-Covers &Manholes Paid by EFT#7071 06/04/2026 06/10/2026 06/30/2026 06/10/2026 1,854.30 Vendor 49997-PACIFIC STEEL&RECYCLING Totals Invoices 1 $1,854.30 Vendor 20450-PDM STEEL 598299-01 Buildings Paid by EFT#7072 05/15/2026 06/10/2026 05/31/2026 06/10/2026 203.71 Vendor 20450-PDM STEEL Totals Invoices 1 $203.71 Vendor 49961-PLATINUM ADVISORS LLC 40384 Public Relations Expense Paid by EFT#7073 06/01/2026 06/10/2026 06/30/2026 06/10/2026 750.00 Vendor 49961-PLATINUM ADVISORS LLC Totals Invoices 1 $750.00 Vendor 44593-POLYDYNE INC 2020042 Polymer Paid by EFT#6989 04/16/2026 05/27/2026 05/31/2026 05/28/2026 28,614.30 2020782 Polymer Paid by EFT#6989 04/20/2026 05/27/2026 05/31/2026 05/28/2026 (7,153.58) Vendor 44593-POLYDYNE INC Totals Invoices 2 $21,460.72 Vendor 48313-POWER TRAC 105828 Grounds&Maintenance Paid by EFT#7074 05/26/2026 06/10/2026 06/30/2026 06/10/2026 679.87 Vendor 48313-POWER TRAC Totals Invoices 1 $679.87 Vendor 50528-FREDERICK&DIANE PRINGLE Run by Erika Franco on 06/10/2026 02:21:31 PM Page 9 of 14 OVTH TgHO s Payment of Claims F _ Payment Date Range 05/28/26 - 06/10/26 s" �" e� Report By Vendor - Invoice A&a.,er • 1 950 • W��`0 Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 2707626 Water Use Reduction Rebates Paid by EFT#6990 05/21/2026 05/27/2026 05/31/2026 05/28/2026 750.00 Vendor 50528-FREDERICK&DIANE PRINGLE Totals Invoices 1 $750.00 Vendor 49923-QUADIENT FINANCE USA INC 05/13/26 Postage prepaid Paid by EFT#7075 06/03/2026 06/10/2026 05/31/2026 06/10/2026 2,000.00 Vendor 49923-QUADIENT FINANCE USA INC Totals Invoices 1 $2,000.00 Vendor 43332-RED WING SHOE STORE 812ST1-4732325 Safety Equipment-Physicals Paid by EFT#6991 05/12/2026 05/27/2026 05/31/2026 05/28/2026 254.46 Vendor 43332-RED WING SHOE STORE Totals Invoices 1 $254.46 Vendor 47803-REDWOOD PRINTING 38526 Office Supplies Paid by EFT#7024 05/26/2026 06/03/2026 05/31/2026 06/03/2026 129.18 Vendor 47803- REDWOOD PRINTING Totals Invoices 1 $129.18 Vendor 48144-RELIANCE STANDARD MAY2026 Voluntary Life Payable May Paid by Check#115404 05/01/2026 06/03/2026 05/31/2026 06/03/2026 1,497.04 MAY26A LTD/Life Insurance Management Paid by Check#115404 05/01/2026 06/03/2026 05/31/2026 06/03/2026 2,938.57 May MAY26B LTD/Life Insurance Union/Board Paid by Check#115404 05/01/2026 06/03/2026 05/31/2026 06/03/2026 3,439.88 Payable May Vendor 48144-RELIANCE STANDARD Totals Invoices 3 $7,875.49 Vendor 50251-RICHARDS WATSON&GERSHON 258476 Legal Services April 2026 Paid by EFT#7076 05/12/2026 06/10/2026 04/30/2026 06/10/2026 87,028.43 Vendor 50251-RICHARDS WATSON&GERSHON Totals Invoices 1 $87,028.43 Vendor 48110-ROCKWELL SOLUTIONS INC 3796 Tahoe Keys SPS Spare 75HP Paid by EFT#6992 05/20/2026 05/27/2026 05/31/2026 05/28/2026 65,049.35 Submersible Pump Vendor 48110-ROCKWELL SOLUTIONS INC Totals Invoices 1 $65,049.35 Vendor 50472-SCHAAF&WHEELER CONSULTING CIVIL ENGINEERS 43259 Force Main ARV Replacement Paid by EFT#7077 04/30/2026 06/10/2026 05/31/2026 06/10/2026 28,281.50 Vendor 50472-SCHAAF&WHEELER CONSULTING CIVIL ENGINEERS Totals Invoices 1 $28,281.50 Vendor 50347-MARK SEELOS PER DIEM 061926 Travel-Meetings-Education Paid by EFT#6993 04/10/2026 05/27/2026 06/30/2026 05/28/2026 529.00 Vendor 50347-MARK SEELOS Totals Invoices 1 $529.00 Vendor 50504-SERVER SUPPLY.COM INC 4516030 District Computer Supplies Paid by EFT#7078 05/22/2026 06/10/2026 06/30/2026 06/10/2026 655.00 4516336 District Computer Supplies Paid by EFT#7078 05/22/2026 06/10/2026 06/30/2026 06/10/2026 3,000.20 Vendor 50504-SERVER SUPPLY.COM INC Totals Invoices 2 $3,655.20 Vendor 48911-JOHN SHERIDAN TRAVELEXP 041026 Travel-Meetings-Education Paid by EFT#6994 05/21/2026 05/27/2026 05/31/2026 05/28/2026 584.72 Vendor 48911-JOHN SHERIDAN Totals Invoices 1 $584.72 Vendor 43552-SHERWIN-WILLIAMS 42241131640526 Grounds&Maintenance Paid by EFT#7025 05/04/2026 06/03/2026 05/31/2026 06/03/2026 166.28 Vendor 43552-SHERWIN-WILLIAMS Totals Invoices 1 $166.28 Vendor 40633-SIGMA ALDRICH INC Run by Erika Franco on 06/10/2026 02:21:31 PM Page 10 of 14 eu TAN Payment Payment of Claims _ Payment Date Range 05/28/26 - 06/10/26 syy -" ec Report By Vendor - Invoice AGe4/er � 1950 � *I��`c, Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 569978007 Laboratory Supplies Paid by EFT#7026 05/17/2026 06/03/2026 05/31/2026 06/03/2026 87.40 570022382 Laboratory Supplies Paid by EFT#7079 05/20/2026 06/10/2026 05/31/2026 06/10/2026 68.20 Vendor 40633-SIGMA ALDRICH INC Totals Invoices 2 $155.60 Vendor 48628-SOUTH LAKE TAHOE ACE HARDWARE 076270 Pump Stations Paid by EFT#6995 05/16/2026 05/27/2026 05/31/2026 05/28/2026 77.17 Vendor 48628-SOUTH LAKE TAHOE ACE HARDWARE Totals Invoices 1 $77.17 Vendor 23400-SOUTH TAHOE PUBLIC UTILITY DISTRICT 2506132-001 426 Water&Other Utilities Paid by Check#115401 05/01/2026 05/27/2026 05/31/2026 05/28/2026 1,664.43 2612107-001 426 Water Paid by Check#115401 05/01/2026 05/27/2026 05/31/2026 05/28/2026 120.46 2718021-001 426 Water Paid by Check#115401 05/01/2026 05/27/2026 05/31/2026 05/28/2026 184.11 3102034-001 426 Water Paid by Check#115401 05/01/2026 05/27/2026 05/31/2026 05/28/2026 219.14 3103021-001 426 Water Paid by Check#115401 05/01/2026 05/27/2026 05/31/2026 05/28/2026 184.11 3122506-001 426 Water&Other Utilities Paid by Check#115401 05/01/2026 05/27/2026 05/31/2026 05/28/2026 112.54 3221118-001 426 Other Utilities Paid by Check#115401 05/01/2026 05/27/2026 05/31/2026 05/28/2026 43.50 Vendor 23400-SOUTH TAHOE PUBLIC UTILITY DISTRICT Totals Invoices 7 $2,528.29 Vendor 45168-SOUTHWEST GAS 910000041350 426 Natural Gas Paid by EFT#6996 05/11/2026 05/27/2026 05/31/2026 05/28/2026 119.38 910000665034 426 Natural Gas Paid by EFT#6996 05/12/2026 05/27/2026 05/31/2026 05/28/2026 11.00 910004641862 526 Natural Gas Paid by EFT#6996 05/18/2026 05/27/2026 05/31/2026 05/28/2026 11.00 910000426082 526 Natural Gas Paid by EFT#7027 05/19/2026 06/03/2026 05/31/2026 06/03/2026 39.17 910004972305 526 Natural Gas Paid by EFT#7027 05/21/2026 06/03/2026 05/31/2026 06/03/2026 29.20 910005005635 526 Natural Gas Paid by EFT#7027 05/21/2026 06/03/2026 05/31/2026 06/03/2026 37.61 910000416139 526 Natural Gas Paid by EFT#7027 05/22/2026 06/03/2026 05/31/2026 06/03/2026 117.38 910000192416 526 Natural Gas Paid by EFT#7027 05/26/2026 06/03/2026 05/31/2026 06/03/2026 167.72 910000421502 526 Natural Gas Paid by EFT#7027 05/27/2026 06/03/2026 05/31/2026 06/03/2026 662.66 910000429959 526 Natural Gas Paid by EFT#7027 05/27/2026 06/03/2026 05/31/2026 06/03/2026 124.04 910000429960 526 Natural Gas Paid by EFT#7027 05/27/2026 06/03/2026 05/31/2026 06/03/2026 5,515.43 910005021566 526 Natural Gas Paid by EFT#7027 05/27/2026 06/03/2026 05/31/2026 06/03/2026 96.16 Vendor 45168-SOUTHWEST GAS Totals Invoices 12 $6,930.75 Vendor 50129-STREAMLINE INC A16914F6-0008 Service Contracts Paid by EFT#6997 05/01/2026 05/27/2026 05/31/2026 05/28/2026 26,199.96 Vendor 50129-STREAMLINE INC Totals Invoices 1 $26,199.96 Vendor 48511-SWRCB/DWOCP RODRIGUEZ APP 26 Dues-Memberships- Paid by Check#115405 05/26/2026 06/03/2026 05/31/2026 06/03/2026 464.00 Certification Vendor 48511-SWRCB/DWOCP Totals Invoices 1 $464.00 Vendor 48366-TAHOE OUTDOOR LIVING 9759-3 Grounds&Maintenance Paid by EFT#7080 06/01/2026 06/10/2026 06/30/2026 06/10/2026 975.00 Vendor 48366-TAHOE OUTDOOR LIVING Totals Invoices 1 $975.00 Vendor 48540-TROXLER ELECTRONIC LABS INC PSERVI-22-33725 Shop Supplies Paid by EFT#6998 03/02/2026 05/27/2026 05/31/2026 05/28/2026 637.30 PSERVI-22-33727 Shop Supplies Paid by EFT#6998 03/02/2026 05/27/2026 05/31/2026 05/28/2026 640.05 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 11 of 14 OVTH TgHO s Payment of Claims F -a-- Payment Date Range 05/28/26 - 06/10/26 ,% �" Report By Vendor - Invoice A&az er . 1950 • w��`C Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount PSERVI-22-34121 Shop Supplies Paid by EFT#6998 03/02/2026 05/27/2026 05/31/2026 05/28/2026 575.96 Vendor 48540-TROXLER ELECTRONIC LABS INC Totals Invoices 3 $1,853.31 Vendor 50275-U-ROCK UTILITY EQUIPMENT LLC 1190 Automotive Paid by EFT#6999 05/08/2026 05/27/2026 05/31/2026 05/28/2026 3,094.97 Vendor 50275-U-ROCK UTILITY EQUIPMENT LLC Totals Invoices 1 $3,094.97 Vendor 49852-ULTRA LINK CABLING SYSTEMS 26-0247 Replace Fiber Shops Paid by EFT#7000 05/13/2026 05/27/2026 05/31/2026 05/28/2026 9,838.24 Vendor 49852-ULTRA LINK CABLING SYSTEMS Totals Invoices 1 $9,838.24 Vendor 49976-UNIFIED FIELD SERVICES CORP 26/O1A Tank Coatings-Stateline No. 1 Paid by EFT#7081 05/31/2026 06/05/2026 05/31/2026 06/10/2026 75,400.00 26/O1AR Tank Coatings-Stateline No. 1 Paid by EFT#7081 05/31/2026 06/05/2026 05/31/2026 06/10/2026 (3,770.00) Retainage Vendor 49976-UNIFIED FIELD SERVICES CORP Totals Invoices 2 $71,630.00 Vendor 48262-UPS FREIGHT 0000966628206 Postage Expenses Paid by EFT#7001 05/16/2026 05/27/2026 05/31/2026 05/28/2026 126.59 Vendor 48262-UPS FREIGHT Totals Invoices 1 $126.59 Vendor 49947-CUST#593278 USABLUEBOOK INV01040852 Shop Supplies Paid by EFT#7002 05/07/2026 05/27/2026 05/31/2026 05/28/2026 166.25 INV01045251 Laboratory Supplies Paid by EFT#7002 05/12/2026 05/27/2026 05/31/2026 05/28/2026 62.55 INV01045521 Pipe-Covers &Manholes Paid by EFT#7002 05/12/2026 05/27/2026 05/31/2026 05/28/2026 1,030.52 INV01045594 Pipe-Covers &Manholes Paid by EFT#7002 05/12/2026 05/27/2026 05/31/2026 05/28/2026 65.68 INV01045627 Pipe-Covers &Manholes Paid by EFT#7002 05/12/2026 05/27/2026 05/31/2026 05/28/2026 32.84 INV01047253 Laboratory Equipment Paid by EFT#7002 05/14/2026 05/27/2026 05/31/2026 05/28/2026 217.39 INV01048412 Arrowhead Well 8" Flow Meter Paid by EFT#7002 05/15/2026 05/27/2026 05/31/2026 05/28/2026 6,491.12 INV01048466 Grizzly MTN Booster 8" Flow Paid by EFT#7002 05/15/2026 05/27/2026 05/31/2026 05/28/2026 6,491.12 Meter INV01051819 Pump Stations Paid by EFT#7082 05/19/2026 06/10/2026 05/31/2026 06/10/2026 69.30 INV01052847 Pipe-Covers &Manholes Paid by EFT#7002 05/20/2026 05/27/2026 05/31/2026 05/28/2026 30.24 INV01052899 Pipe-Covers &Manholes Paid by EFT#7082 05/20/2026 06/10/2026 05/31/2026 06/10/2026 15.11 INV01059436 Pipe-Covers &Manholes Paid by EFT#7082 05/28/2026 06/10/2026 05/31/2026 06/10/2026 15.11 Vendor 49947-CUST#593278 USABLUEBOOK Totals Invoices 12 $14,687.23 Vendor 48342-V&A CONSULTING ENGINEERS INC 26689 Contractual Services Paid by EFT#7083 05/31/2026 06/10/2026 05/31/2026 06/10/2026 6,115.00 Vendor 48342-V&A CONSULTING ENGINEERS INC Totals Invoices 1 $6,115.00 Vendor 50508-VALLEY AGRONOMICS LLC 290002866 Alfalfa Field Rehabilitation Paid by EFT#7003 04/29/2026 05/27/2026 05/31/2026 05/28/2026 2,873.25 Vendor 50508-VALLEY AGRONOMICS LLC Totals Invoices 1 $2,873.25 Vendor 49296-VERIZON WIRELESS 6143194777 Telephone Paid by EFT#7004 05/09/2026 05/27/2026 05/31/2026 05/28/2026 599.47 Vendor 49296-VERIZON WIRELESS Totals Invoices 1 $599.47 Vendor 44580-VESTIS SERVICES LLC 5980364225 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 454.27 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 12 of 14 yoV•rH TAho F Payment of Claims A._ _ Payment Date Range 05/28/26 - 06/10/26 se~ "�e� Report By Vendor - Invoice Summary Listing A`B ker 1950 W `iC UTILITY 001 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount 5980364226 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 46.42 5980364227 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 52.08 5980364228 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 5.45 5980364229 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 13.50 5980364230 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 15.14 5980364231 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 111.90 5980364232 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 54.25 5980364233 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 25.90 5980364234 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 4.35 5980364235 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 65.78 5980364236 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 99.13 5980364237 Uniform Payable Paid by EFT#7005 03/18/2026 05/27/2026 05/31/2026 05/28/2026 114.02 5980365769 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 72.39 5980365770 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 46.42 5980365771 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 49.83 5980365772 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 5.45 5980365773 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 13.50 5980365774 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 15.14 5980365775 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 110.56 5980365776 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 54.25 5980365777 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 30.80 5980365778 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 4.35 5980365779 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 63.33 5980365780 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 99.13 5980365781 Uniform Payable Paid by EFT#7005 03/25/2026 05/27/2026 05/31/2026 05/28/2026 114.02 5980377826 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 78.02 5980377827 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 47.44 5980377828 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 53.13 5980377829 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 5.45 5980377830 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 13.50 5980377831 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 15.14 5980377832 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 121.03 5980377833 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 54.25 5980377834 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 32.57 5980377835 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 4.35 5980377836 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 72.60 5980377837 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 98.07 5980377838 Uniform Payable Paid by EFT#7005 05/20/2026 05/27/2026 05/31/2026 05/28/2026 114.02 Vendor 44580-VESTIS SERVICES LLC Totals Invoices 39 $2,450.93 Vendor 49540-WATER SYSTEMS CONSULTING INC 12564 Contractual Services Paid by EFT#7084 03/31/2026 06/10/2026 05/31/2026 06/10/2026 6,055.28 12611 Contractual Services Paid by EFT#7084 04/30/2026 06/10/2026 05/31/2026 06/10/2026 3,451.00 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 13 of 14 OVTH TgHO s Payment of Claims F _ Payment Date Range 05/28/26 - 06/10/26 ,% Report By Vendor - Invoice A&az er . 1950 • W��`0 Summary Listing C UTILITY 018 Invoice Number Invoice Description Status Held Reason Invoice Date Due Date G/L Date Received Date Payment Date Invoice Net Amount Vendor 49540-WATER SYSTEMS CONSULTING INC Totals Invoices 2 $9,506.28 Vendor 25850-WESTERN NEVADA SUPPLY 12272532 Pipe-Covers &Manholes Paid by EFT#7085 05/19/2026 06/10/2026 05/31/2026 06/10/2026 1,827.00 12272536 Saddles&Fittings Inventory Paid by EFT#7085 05/19/2026 06/10/2026 05/31/2026 06/10/2026 1,378.08 12272539 Boxes-Lids-Extensions Inventory Paid by EFT#7085 05/19/2026 06/10/2026 05/31/2026 06/10/2026 699.28 12272549 Pipe-Covers &Manholes Paid by EFT#7085 05/19/2026 06/10/2026 05/31/2026 06/10/2026 554.58 12272624 Fire Hydrants&Parts Paid by EFT#7085 05/19/2026 06/10/2026 05/31/2026 06/10/2026 3,711.68 32187012 Small Tools Paid by EFT#7006 05/19/2026 05/27/2026 05/31/2026 05/28/2026 205.32 12274005 Repair Clamps Inventory Paid by EFT#7085 05/20/2026 06/10/2026 05/31/2026 06/10/2026 1,204.86 12275536 Pump Stations&Wells Paid by EFT#7085 05/21/2026 06/10/2026 05/31/2026 06/10/2026 552.28 12276860 Meters&Parts Inventory Paid by EFT#7085 05/21/2026 06/10/2026 05/31/2026 06/10/2026 542.81 32269701 Buildings Paid by EFT#7085 05/22/2026 06/10/2026 05/31/2026 06/10/2026 1,598.63 32280233 Small Tools Paid by EFT#7028 05/22/2026 06/03/2026 05/31/2026 06/03/2026 134.98 12248807 Repair Clamps Inventory Paid by EFT#7085 05/26/2026 06/10/2026 05/31/2026 06/10/2026 2,034.69 12278562 Pipe Inventory Paid by EFT#7085 05/26/2026 06/10/2026 05/31/2026 06/10/2026 406.51 12278564 Pipe-Covers &Manholes Paid by EFT#7028 05/26/2026 06/03/2026 05/31/2026 06/03/2026 337.13 Vendor 25850-WESTERN NEVADA SUPPLY Totals Invoices 14 $15,187.83 Vendor 48781-WORLD OIL REFINING I500-01382450 Service Contracts Paid by EFT#7029 05/22/2026 06/03/2026 05/31/2026 06/03/2026 153.00 Vendor 48781-WORLD OIL REFINING Totals Invoices 1 $153.00 Vendor 50392-ZORO INV18810052 Small Tools Paid by EFT#7030 04/15/2026 06/03/2026 05/31/2026 06/03/2026 989.86 INV19020464 Pump Stations Paid by EFT#7007 05/12/2026 05/27/2026 05/31/2026 05/28/2026 54.40 INV19077098 Shop Supplies Paid by EFT#7086 05/19/2026 06/10/2026 05/31/2026 06/10/2026 287.31 Vendor 50392-ZORO Totals Invoices 3 $1,331.57 Grand Totals Invoices 314 $1,206,294.37 Run by Erika Franco on 06/10/2026 02:21:31 PM Page 14 of 14 OK S u TakoF -- 1111' e° A • 1950 • W�`P� 4/C UTILITY Des& SOUTH TAHOE PUBLIC UTILITY DISTRICT Joel Henderson, Director BOARD MEMBERS Kelly Sheehan, Director Nick Haven, Vice President Shane Romsos, President Nick Exline, Director Paul Hughes, General Manager Andrea Salazar, Chief Financial Officer REGULAR MEETING OF THE BOARD OF DIRECTORS SOUTH TAHOE PUBLIC UTILITY DISTRICT June 4, 2026 MINUTES The South Tahoe Public Utility District Board of Directors met in a regular session, 2:00 p.m., at the District Office, located at 1275 Meadow Crest Drive, South Lake Tahoe, California. ROLL CALL: Board of Directors: President Romsos, Directors Haven, Sheehan, Henderson and Exline Absent: Staff: Paul Hughes, Andrea Salazar, Robert Wakefield, Melonie Guttry, Shannon Chandler, Shelly Thomsen, Megan Colvey, Ryan Lee 1. PLEDGE OF ALLEGIANCE: 2. COMMENTS FROM THE PUBLIC: Jesse Garner, with Firewise, USA, thanked the District for supporting fuels reduction and water for fire infrastructure in three sites in his community. The current effort is to define in map form, the risk in the lands around the community, including the location of fire hydrants. President Romsos commended Firewise community for its efforts as well. 3. CORRECTIONS TO THE AGENDA OR CONSENT CALENDAR: None 4. ADOPTION OF CONSENT CALENDAR: Moved Sheehan/Second Henderson/Haven Yes/Romsos Yes/Henderson Yes/Sheehan Yes/Exline Yes to approve the Consent Calendar as presented. a. 2026-2027 POLYMER SUPPLIES CONTRACT (Aaron Buckman, Manager of Plant Operations) Authorized a one-year extension of the Polymer Purchase Contract for Fiscal Year 2026/2027 with Polydyne, Inc., in the estimated amount of $143,000. b. MARCH 31, 2026 FISCAL YEAR TO DATE FINANCIAL STATEMENTS (Andrea Salazar, Chief Financial Officer) Received and filed the March 31, 2026 Income Statement and Balance Sheet Reports. REGULAR BOARD MEETING MINUTES: June 4, 2026 PAGE -2 c. ANNUAL ADOPTION OF STATEMENT OF INVESTMENT POLICY (Greg Dupree,Accounting Manager) Adopted Resolution No. 3335-26 (superseding Resolution No. 3311-25), adopting the Statement of Investment Policy. d. RECEIVE AND FILE PAYMENT OF CLAIMS (Greg Dupree,Accounting Manager) Received and filed Payment of Claims in the amount of $1,390,263.37. e. REGULAR BOARD MEETING MINUTES: May 21, 2026 (Melonie Guttry, Executive Services Manager/Clerk of the Board) Approved May 21, 2026, Minutes 5. CONSENT ITEMS BROUGHT FORWARD FOR SEPARATE DISCUSSION/ACTION: None 6. ITEMS FOR BOARD ACTION: a. Fiscal Year 2026/2027 Water and Sewer Service Charge Rates (Andrea Salazar, Chief Financial Officer) Andrea Salazar presented details regarding the water and sewer rate increases and received brief comments from the Board. Moved Sheehan/Second Exline/Haven Yes/Romsos Yes/Henderson No/Sheehan Yes/Exline Yes to approve Resolution No. 3332-26 confirming the water and sewer service charge rate increases of 6.5% and 6.5% for Fiscal Year 2026/2027. b. Fiscal Year 2026/2027 Water Enterprise Fund Budget (Andrea Salazar, Chief Financial Officer) Andrea Salazar provided details regarding the Water Enterprise Fund Budget and received brief comments from the Board. Moved Sheehan/Second Haven/Haven Yes/Romsos Yes/Henderson No/Sheehan Yes/Exline Yes to adopt Resolution No. 3333-26 for the Fiscal Year 2026/2027 Water Enterprise Fund Budget and authorize staff to incorporate any adjustments or changes necessary because of Board action. c. Fiscal Year 2026/2027 Sewer Enterprise Fund Budget (Andrea Salazar, Chief Financial Officer) Andrea Salazar provided details regarding the Sewer Enterprise Fund Budget and addressed questions from the Board. Moved Sheehan/Second Haven/Haven Yes/Romsos Yes/Henderson No/Sheehan Yes/Exline Yes to Adopt Resolution No. 3334-26 for the Fiscal Year 2026/2027 Sewer Enterprise Fund Budget and authorize staff to incorporate any adjustments or changes necessary because of Board action. 7. STANDING AND AD-HOC COMMITTEES AND LIAISON REPORTS: None. 8. BOARD MEMBER REPORTS: REGULAR BOARD MEETING MINUTES: June 4, 2026 PAGE -3 Director Exline commended the District for its outreach to the community prior to the adoption of the rate increase. Director Sheehan echoed Director Exline's comments as she has also experienced positive interactions with the community regarding the rate increase rationale. Director Henderson said he appreciates the staff and the restructuring but he does not support the rate increase. Director Haven attended the Employee Communications Committee and he gets positive comments from constituents in the community who interact with staff at the front desk, and who see staff working in the field, and the District has a positive public image. He is proud to be a part of that. 9. STAFF/ATTORNEY REPORTS: President Romsos requested an update on the Environmental Improvement Program. Shelly Thomsen reported the program constitutes 80 agencies working on lake-saving projects around Lake Tahoe. Its marketing outreach material is revamped including an updated logo and website called restoretahoe.com and the District's part in the program includes the Tahoe Water for Fire Suppression projects. 10. GENERAL MANAGER REPORT: Paul Hughes reported on several items: • He held a meet & greet with Sam Booth, the new Chief Executive Officer for Alpine County, including a tour of Diamond Valley Ranch. • Karla Nemeth is the new Executive Director of Association of California Water Agencies and will be a great addition. 11. NOTICE OF PAST AND FUTURE MEETINGS/EVENTS 12. BREAK AND ADJOURN TO CLOSED SESSION: 2:20 p.m. RECONVENE TO OPEN SESSION: 3:40 p.m. No reportable Board Action. ADJOURNMENT: 3:41 p.m. Shane Romsos, Board President South Tahoe Public Utility District Shannon Chandler Assistant Clerk of the Board South Tahoe Public Utility District General Manager Paul Hughes Directors 44ex • 1950 • w$ South T Nick Haven Shane Romsos Joel Henderson_ Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6a TO: Board of Directors FROM: John Sheridan, Operations Supervisor MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: 2025 Urban Water Management Plan and Water Shortage Contingency Plan Adoption REQUESTED BOARD ACTION: (1) Hold a Public Hearing at 2:01 p.m. to receive public comments regarding the District's 2025 Urban Water Management Plan and Water Shortage Contingency Plan updates; and (2) Adopt Resolution No. 3336-26 approving the 2025 Urban Water Management Plan and Water Shortage Contingency Plan. DISCUSSION: The District is a designated Urban Water supplier and is required to prepare an Urban Water Management Plan (UWMP) every five years. The Water Shortage Contingency Plan (WSCP) is a required appendices of the UWMP as part of the water contingency analysis specified by the California Water Code Section10632. The draft 2025 UWMP and WSCP are ready for review by the public, staff, and other stakeholders. At this meeting, a Public Hearing will be held at 2:01 p.m. to receive public comments regarding the District's 2025 UWMP and WSCP; and to request adoption of Resolution No. 3336-26 approving the 2025 UWMP and WSCP for submission to the California Department of Water Resources. SCHEDULE: Upon Board Approval COSTS: N/A ACCOUNT NO: N/A BUDGETED AMOUNT AVAILABLE: N/A IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ❑ Yes ❑ No N/A ATTACHMENTS: Resolution No. 3336-26; Presentation Slides; Urban Water Management Plan and Water Shortage Contingency Plan (attached separately) CONCURRENCE WITH REQUESTED ACTION::, CATEGORY: Sewer/Water GENERAL MANAGER: YES /°ter NO CHIEF FINANCIAL OFFICER: YES / NO 1 RESOLUTION NO. 3336-26 2 A RESOLUTION BY THE BOARD OF DIRECTORS OF THE SOUTH TAHOE PUBLIC UTILITY DISTRICT 3 4 WHEREAS, the California Urban Water Management Planning Act (Water 5 Code section 10610 et. seq.), ("the Act") mandates that every urban water supplier providing water for municipal purposes to more than 3,000 customers or 6 supplying more than 3,000 acre-feet of water annually, must prepare and adopt an updated Urban Water Management Plan ("UWMP") at least once every five years, the primary objective of which is to plan for the conservation and efficient 8 use of water; and 9 WHEREAS, California Water Code 10632 requires a Water Shortage 10 Contingency Plan ("WSCP") as part of the water contingency analysis for urban 11 water suppliers; and 12 WHEREAS, the South Tahoe Public Utility District ("District") is an "urban water 13 supplier" for purposes of the Act because it supplies more than 3,000 customers, and 14 15 WHEREAS, in accordance with applicable law, including the requirements of the Act and SBX7-7, the District has prepared its 2025 UWMP and WSCP and has 16 undertaken certain agency coordination, public notice, public involvement and 17 outreach, public comment, and other procedures in relation to its 2025 UWMP and WSCP; and 18 19 WHEREAS, in accordance with applicable law, including Water Code sections 10608.26 and 10642, and Government Code section 6066, the District made its 20 Draft 2025 UWMP and WSCP available for public inspection and caused to be 21 published with the jurisdiction of the District at least two notices of public hearing regarding the 2025 UWMP and WSCP; and 22 23 WHEREAS, the District held its public hearing on June 18, 2026 at 2:00 pm, in the Board Room of the South Tahoe Public Utility District, located at 1275 Meadow 24 Crest Drive, South Lake Tahoe, CA 96150; 25 NOW, THEREFORE, BE IT RESOLVED that the Board of Directors of South Tahoe 26 Public Utility District hereby formally adopts the above-mentioned Resolution No. 27 3336-26 for the effective date of June 18, 2026. 28 WE, THE UNDERSIGNED, do hereby certify that the above and foregoing Resolution No. 3336-26 was duly and regularly adopted and passed by the Board of Directors of the South Tahoe Public Utility District at a Regular meeting held on 1 the 18th day of June, 2026, by the following vote: 2 AYES: 3 NOES: 4 ABSENT: 5 6 Shane Romsos, Board President 7 South Tahoe Public Utility District 8 ATTEST: 9 Shannon Chandler Assistant Clerk of the Board 10 South Tahoe Public Utility District 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Resolution No.3336-26 Page 2 June 18,2026 I Kennedy Jenks South Tahoe s=s ''-.- om`' Public Utility District • i y ,�,(• k �. '� F.. -443 ,;Ace i s ii i J - . ./ • ,. • 2025 Urban Water ; : a . ManagementPlan and _-- _ Water Shortage Contingency Plan F. r � r: , . aj• Public Hearing and Adoption June 18, 2026 . , Agenda • UWMP and WSCP Overview • Urban Water Management Plan (UWMP) Key Elements • Water Shortage Contingency Plan (WSCP) Key Elements 1:0 • Adoption and Timeline KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 2 Why a 2025 Update? • l • Required by the California UWMP every 5 years iiUpdates planning evaluations of the availability, reliability, and quality of water supplies to inform other planning 40 . Maintains eligibility for State grants Kennedy Jenks Description of Detailed water use by description of all sector supply sources Key emen s of th UWMP Urban Water Management Plan Evaluation of water supply Demand reliability to meet Management current and future demands in Measures various hydrologic (DMMs) year types KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 4 Key Elements of the UWMP Conservation Current and Current and Supply and Demand Future Demands Future Supplies Reliability Management • Population projections • Basin characteristics • Normal, single dry, • Water waste • Metered usage • Current and and multiple dry year • Metering • SBx7-7 compliance projected supply supply projections • Conservation pricing • Water loss standard availability • Drought risk • Public outreach compliance • Future projects assessment • Water loss impacting water • Supply and demand management supplies comparisons • Residential and commercial conservation programs KJ 1 Kennedy Jenks Demand Projections Use Type Current Water Use Projected Water Use (AF) (AF) 2025 2030 2035 2040 2045 2050 , Single Family 2,038 2,980 3,036 3,092 3,148 3,204 Multi-Family 699 963 1 ,008 1 ,008 1 ,008 1 ,008 Commercial 1 ,317 1 ,523 1 ,579 1 ,635 1 ,680 1 ,680 Distribution System Water Loss 826 868 893 910 926 935 Total 4,880 6,334 6,516 6,646 6,762 6,827 NOTES: Projections are based on average day demand. SB X7-7 Compliance Demonstrated in 2020 allons •er ca•ita •er da GPCD) Historical Baseline Water Use (10-year baseline, 1996-2004) 226 2020 Goal 181 2020 Annual Daily Per Capita Water Use 173 Goal Met? YES KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 6 Progress Towards Water Loss Standard Compliance Real Water Losses 2028 Real Water Loss Standard 60.2 gallons per service connection per day (GPSCD) Number of Connections 18,545 Total Real Water Loss (from AWWA Water 566 AF Meets Real Water Loss Audit) _ Loss Performance Real Water Loss 27.2 GPSCD Standard and Apparent Water N. Apparent Water Losses Loss Standard 2028 Apparent Water Loss Standard 3.8 gallons per service connection per day (GPSCD) Number of Connections 18,545 Total Apparent Water Loss (from AWWA 64.3 AF Water Loss Audit) Apparent Water Loss 3.1 GPSCD MI Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 7 Projected Supply Availability Water Supply Current Supply Projected Supply (AF) AL 2025 2030 2035 2040 2045 2050 Groundwater (not desalinated) 4,800 6,334 6,516 6,646 6,762 6,827 Total 4,880 6,334 6,516 6,646 6,762 6,827 Supply Reliability Assessment • The District has adequate supplies and supply augmentation methods to meet demands during normal, single-dry, and multiple-dry years throughout the 20-year planning period. K 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 8 Conservation and DMMs • Required by UWMP act: • Water waste prevention ordinances • Metering • Conservation pricing • Public education and outreach • Programs to assess and manage distribution system real loss • Water conservation program coordination and staffing support • District-specific DMMs: • Residential programs — water efficient appliance rebates, Water Wise house calls, Water Wise landscape consultation, turf buy-back, irrigation efficiency evaluations and rebates, leak detection assistance, Direct Distribution Program Discounts (Cal WEP) • Commercial programs — customized commercial rebate program, commercial water use review, turf buy-back, Water Wise landscape consultation, Direct Distribution Program Discounts (Cal WEP) KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 9 Annual water Water supply supply and reliability demand analysis (5-year assessment drought risk Key E I e m e n s procedures assessment) oftheWSCP WSCP Water Shortage Continency Plan Water shortage Communication, stages and monitoring, and response reporting actions protocols KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 10 Annual Supply/Demand Assessment Procedure Dec - Jan I jr> Feb Mar ' I 0 Apr - Maypip • Compile annual total • Update South Tahoe • Submit TSS Annual • Prepare Annual precipitation data Groundwater Model Report to DWR by Water Supply and from the TSS • Calculate water April 1st: Demand Assessment Reference Station: budget for preceding • Conduct public report Hagans Meadow water year hearing presenting • Submit Annual Water (SNOTEL 508) to the Annual Report to Supply and Demand determine water year • Generate plot t e: tracking trends in the District's Board Assessment to DWR yp by July 1st • Compile and climate(in terms of • Evaluate trends in evaluate TSS annual water year groundwater • Continue public Groundwater type), water demand recharge, outreach Elevation Monitoring (in terms of annual groundwater • If necessary, declare data to evaluate groundwater pumpage and water shortage and demand) and available implement supply long-term trends in p PP y groundwater levels available water groundwater storage mitigations and supply (in terms of for the annual water demand reduction • Compile annual available supply and demand actions groundwater groundwater storage) assessment pumpage data to If necessary. • Monitor customer • evaluate long-term response to water trends in determine need for shortage messaging groundwater shortage response and other actions actions extractions • Start Public Outreach l ....____ (_ _} KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer Five-Year Drought Risk Assessment Supply/demand projections over the next five years, assuming multiple dry years Total Water Use (AF) 5,175 5,466 5,757 6,047 6,334 Total Supplies (AF) 5,173 5,464 5,755 6,045 6,334 Surplus (+)/Shortfall (-) without WSCP Action (AF) -2 -2 -2 -2 0 Planned Supply Augmentation (AF) 806 806 806 806 0 Revised Surplus (+)/Shortfall (-) (AF) 804 804 804 804 0 MI Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer 12 Shortage_Stages _. 1_ Standard Percent Suppliers Shortage Levels Percent Shortage Shortage Levels Shortang Range 1 Up to 10°0% Minor Supply Reduction (a) 0%-10% 2 Up to 20 /0 10%-20% 3 Up to 30% 20%-30% Significant Water Shortage Requiring Significant Supply Reduction (e.g., PO)4 Up to 40% 30%-40% 5 Up to 50% Water Emergency Requiring Severe Reductions 40%-50% 6 >50% Catastrophic Water Shortage Requiring Critical Reductions >50% NOTES: (a) This water shortage condition could be triggered if the District provides emergency supply to neighboring water systems under below normal or dry water years. Response Actions .horta Additional Explanation or Referenc How much is this going to Level I reduce the shortage gap? 1-2 The District has interties/bypass with neighboring agencies and could get water from neighboring 600 ma agencies under emergency conditions. gpma District could turn on standby wells and/or extend the operation period of the active production 3-6 wells as needed. 500 gpm NOTES: (a) There are four water suppliers adjacent to the District's service area and there are five emergency interties between the various suppliers. Lukins Brother Water Company (LBWC) equips treatment to its wells, the District could get a 600 gpm supply from LBWC through a bypass. KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer Communication , Monitoring , and Reporting • Communication/outreach protocols: • Coordinate with any City, County and land use authorities within which it provides water supply services for the possible proclamation of local emergency, as defined in Section 8558 of the Government Code. • Writing to water customer either through delivery or mail at his/her last known address with their water billings. • Post the notification through the District's website. • Send out email/text to customers under emergency at his/her last known email address/cell phone number. • Notify and meet with Mutual Aid Agreement water systems to discuss possible adjustment of emergency water deliveries. • Monitoring and reporting to verify effectiveness of conservation programs: • Monitoring of metered water usage • Monitoring production quantities • Complete meter installation process • Review meter data of high-use customers and conduct outreach to determine if demand reduction opportunities exist KJ 1 Kennedy Jenks Tuesday, March 18, 2025 Use Insert > Header& Footer to update the footer Next Steps • Public Hearing • Adoption of the UWMP and WSCP • Submittal to DWR — by July 1 , 2026, within 30 day of adoption • Submittal to the State Library and City/County KJ 1 Kennedy Jenks Tuesday, March 18. 2025 Use Insert , Header e Footer to update the footer 15 (up.. ie._ Q & A .. .. I Sach i Itagaki, P. E. ii v 1./ .. 1 t . re, Sachiltagaki@kennedyjenks.com . . ..‘ -'°--------- , It / - idikp 4 , General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline _ I 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6b TO: Board of Directors FROM: Trevor Coolidge, Senior Engineer MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: 2026 Pioneer Trail Waterline Project- Rebid REQUESTED BOARD ACTION: (1) Adopt Addenda to the 2026 Pioneer Trail Waterline Project - Rebid Design Plans and Specifications pursuant to Government Code 830.6; (2) Find minor irregularities in the bid from Vinciguerra Construction, Inc. to be immaterial and waive immaterial irregularities; and (3) Award the Contract for the 2026 Pioneer Trail Waterline Project- Rebid to the lowest responsive, responsible bidder, Vinciguerra Construction, Inc., in the amount of $5,900,000. DISCUSSION: The Pioneer Trail Waterline Project will provide a critical transmission main along Pioneer Trail between Marshall Trail and Susquehana Drive, installing nearly 9,000 feet of 16-inch diameter water main, and three new pressure-reducing valve (PRV) stations required to connect to multiple pressure zones. The new water main is designed as a transmission main to support a future extension south along Pioneer Trail to the Iroquois pressure zone, providing a looped system between the Stateline Area and Meyers. Following issues with bids submitted during the first bid period, the Board authorized rejecting all bids and re-bidding the Project, splitting the Project over two years due to delays associated with the re-bid. The District advertised the rebid of the Project on May 8, 2026, held a mandatory pre-bid meeting on May 20, 2026, attended by 11 prime contractors, and subsequently received seven bids ranging from $5.9 million to $7.5 million on June 9, 2026. The original Engineer's Estimate was $7.1 million. Vinciguerra Construction, Inc. of Jackson, California was the apparent low-bidder with a bid of $5,900,000. A summary of the bids received is attached. In adopting the Project Addenda issued during the bid, the Board complies with requirements of Public Contract Code section 20201 and Government Code section 830.6. Addenda numbered 1 and 2 were prepared by District staff to modify the previously adopted Plans and Specifications during the bid period to address questions from bidders and provide minor revisions to the Plans and Specifications, including updated details, insurance requirements, and prevailing wage determinations. Trevor Coolidge June 18, 2026 Page 2 Staff recommends that the Board adopt the Project Addenda; find minor irregularities in the bid from Vinciguerra Construction, Inc. to be immaterial and waive immaterial irregularities; and award the Contract for the 2026 Pioneer Trail Waterline Project- Rebid to the lowest responsive, responsible bidder, Vinciguerra Construction, Inc. in the amount of $5,900,000. Construction is anticipated to start early July 2026. SCHEDULE: June 2026 - July 2027 COSTS: $5,900,000 ACCOUNT NO: 20.30.8283 / PTRLWL BUDGETED AMOUNT AVAILABLE: $1,353,599 (Fiscal Year 2026); Additional budget to be allocated in Fiscal Year 2027 IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): Yes ❑ No ❑ N/A ATTACHMENTS: Project Addenda (attached separately) and Bid Summary CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Water GENERAL MANAGER: YES /j/C NO CHIEF FINANCIAL OFFICER: YES NO General Manager Paul Hughes Directors Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6c TO: Board of Directors FROM: Trevor Coolidge, Senior Engineer MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: Bijou Pump Station Rehabilitation Project REQUESTED BOARD ACTION: (1) Approve the additional Scope of Work for Water Systems Consulting, Inc. to complete design services for the Bijou Pump Station Rehabilitation Project; and (2) Authorize the General Manager to execute Amendment B to Task Order No. 2 with Water Systems Consulting, Inc. in the amount of $381,697. DISCUSSION: The Bijou Pump Station is one of the District's "Big 5 Pump Stations" sending wastewater to the Wastewater Treatment Plant (WWTP) and was originally constructed in 1955. It serves the tourist corridor from Ski Run Boulevard to Stateline and includes aging dry-pit/wet-pit pumping infrastructure, outdated electrical equipment for which replacement parts are no longer available, and a wet well configuration that presents ongoing confined space entry and maintenance safety concerns. Prior District condition assessments identified the need for major rehabilitation and modernization of the facility. The Board previously authorized Task Order No. 2 and Amendment A with Water Systems Consulting, Inc. (WSC) totaling $595,413 for alternatives analysis, environmental review, Clean Water State Revolving Fund (SRF) funding application support, and design services for the Bijou Pump Station Rehabilitation Project. Following submission of the SRF funding application, advancement of final design was paused pending hydraulic modeling of the interconnected Bijou, Ski Run, and Johnson Pump Stations and associated force mains. WSC's proposed amendment Scope of Work provides the services necessary to complete final design and prepare the Project for bidding, including easement acquisition support, hazardous materials evaluation, hydraulic and force main design refinements, final permitting, geotechnical support, preparation of bid documents, and design revisions based on District operational requests. Significant scope additions include: • Property acquisition services for one permanent utility easement and one Trevor Coolidge June 18, 2026 Page 2 temporary construction easement, including appraisal and valuation services in compliance with the Uniform Act for projects receiving federal funds; • Final design revisions, including updates to the controls strategy and removal of the proposed Programmable Logic Controller (PLC) in response to feedback from the District's Operations Department; • Relocation design for the McDonald's trash compactor and enclosure, including associated utility work; • Force main and valving modifications to address hydraulic capacity between the Bijou, Ski Run, and Johnson Pump Stations; and • Tahoe Regional Planning Agency and final California Environmental Quality Act- related permitting support. The requested amendment reflects work that was not included in the original design scope, including federally required easement acquisition services, additional hydraulic analysis and force main modifications identified through system modeling, hazardous materials evaluation, and design refinements developed through coordination with Operations and permitting agencies. The Board has previously authorized $595,413 for pump station rehabilitation design work, of which $552,190.55 has been expended. The remaining $43,222.45 is insufficient to complete the final design, permitting, easement acquisition, and bidding documents. The total remaining effort is estimated at $424,920, resulting in a requested amendment amount of $381,697. Staff recommends approval of Amendment B to allow for completion of design, acquisition of required easements, completion of permitting, and preparation of bid documents necessary to maintain Project momentum and preserve eligibility for SRF financing. Approval will position the District to advertise the Project for construction in late winter 2027 and rehabilitate one of the District's most critical wastewater pump stations. SCHEDULE: June 2026- May 2027: WSC design and bidding services June 2027- December 2028: Construction COSTS: $381,697 (Amendment B) ACCOUNT NO: 10.30.8058 (BJUSPS) BUDGETED AMOUNT AVAILABLE: $375,970 (Fiscal Year 2026 available budget); additional budget will be allocated in Fiscal Year 2027 for design and construction. IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ® Yes ❑ No ❑ N/A ATTACHMENTS: WSC Task Order No. 2B Scope of Work, Fee Estimate, Budget Reconciliation, and Project Schedule CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer GENERAL MANAGER: YES r NO CHIEF FINANCIAL OFFICER: YES / NO �Ul wsc May 28, 2026 South Tahoe Public Utilities District Trevor Coolidge 1275 SW Meadow Crest Dr South Lake Tahoe, CA 96150 toolidge©stpud.us Subject: Task Order 2B: Amendment to Scope of Services for the Bijou Pump Station Rehabilitation Project Dear Mr. Coolidge, Water Systems Consulting, Inc. (WSC) is pleased to present this proposal to South Tahoe Public Utilities District (STPUD) for completion of the design phase of the Bijou Pump Station Rehabilitation Project. This project was paused following the submittal of 90% design documents in 2022 in order to confirm eligibility and award of Clean Water State Revolving Funds. In 2025, WSC and District staff revisited rehabilitation alternatives and confirmed the project concept of replacing the pump station in place with a new wet well, submersible pumps, subgrade vaults for valving and flow meters, and additional site work to support these improvements. Going forward, the original design contract requires amendment to provide sufficient budget to complete design and incorporate additional elements that have since been identified as necessary to complete the project: • Property acquisition to expand the utility easement to accommodate proposed upgrades, including acquisition of a temporary construction ease. Scope also includes services to provide property appraisal and goodwill loss valuations. • Inspection, sampling, and analysis to detect potential for hazardous building materials. • Design of demolition and relocation of the McDonald's trash compactor and enclosure. • Modification of sanitary force main and valving to address hydraulic capacity of the conveyance system between Bijou, Ski Run, and Johnson pump stations. • Confirmation of pump sizing for Bijou and Ski Run pump stations. • Construction of a new wet well, including analysis of excavation dewatering and structural anti-buoyancy measures. • Update of previously submitted documents to conform to the 2025 California Building Standards Code. In addition to these items, budget has been provided for as-needed support on the pump station controls strategy. WSC and TJCA will provide increased level of design support to review and understand operator preferences. Water Systems Consulting, 4640 S Macadam Ave., Suite 110, Portland, OR 97239 Phone: (503) 419-6336 I Fax: (971) 275-1911 I www.expectWSC.com 10 w SC The attached scope of work, fee estimate, and schedule outlines the activities to be performed to complete design and develop construction documents to be advertised for bid. A reconciliation with previous task order amounts was also performed to inform the request. WSC appreciates the opportunity to continue this important work with the District. If you should have any questions, please do not hesitate to contact us for further discussion. Sincerely, Water Systems Consulting, Inc. Susan Schlangen Scott Duren Senior Engineer & Project Manager Vice President, Principal In Charge Attachments: • Scope of Work for Task Order 2B • Fee Estimate for Task Order 2B • Budget Reconciliation for Bijou Pump Station Rehabilitation Project • Project Schedule for Bijou Pump Station Rehabilitation Design Phase 3/13/2026 Page 2 of 2 Scope of Work W SC Bijou Pump Station Rehabilitation Project Task 0 Project Management 0.7 Project Administration • Provide monthly project schedule reporting including schedule updates reflecting major changes to the project's scope and schedule. • Provide monthly invoicing and progress reporting including major activities performed, milestones achieved, and deliverables submitted by task. Project manager will identify any schedule or budget issues in advance. • Manage internal Project team and sub-consultants. 0.8 Routine Progress Meetings • Conduct weekly meetings with STPUD Project Manager, including other STPUD staff as needed, to monitor and drive project progress during the design phase. These meetings are anticipated to be 30 minutes in duration and occur virtually using Microsoft Teams. • Conduct biweekly meetings between the consultant team to monitor and drive project progress during the design phase. These meetings are anticipated to be 30 minutes in duration and occur virtually using Microsoft Teams. • Conduct as-needed project coordination meetings following the design phase. An additional 20 hours of meeting time is assumed for budgetary purposes. Deliverables: (1) Monthly progress reports and invoices. (2) Meeting agendas, minutes, and action items Assumptions: Design and bidding phase duration is approximately six months. Task 1 Data Collection, Review & Analysis 1 .4 Alternatives Analysis TM • Review and confirm recommendations from final Alternatives Analysis TM through progress meetings with District staff. Up to four hours of additional review and discussion with District staff are provided. Assumptions: No additional modifications to the TM will be provided. 1 .7 Hazardous Materials Survey • Perform an on-site visual inspection to document suspect asbestos-containing materials (ACMs) and lead containing materials (LCMs) and develop a sampling plan. 4/27/2026 Page 1 of 5 Scope of Work WSC Bijou Pump Station Rehabilitation Project • Inspect dry pit of existing pump station and above ground structures associated with the pump station facility. • Collect up to 30 bulk samples of suspect ACM and 10 bulk samples of suspect LCM that may be impacted during the project. — Analysis for asbestos content will be completed by Polarized Light Microscopy using EPA Method 40 CFR, Part 763, Appendix E to Subpart E and EPA 600/R- 93-116, Visual Area Estimation or equivalent. — Analysis for lead content will be conducted by Flame Atomic Absorption Spectrometry using EPA Method 30506.70006 or equivalent. • Submit an inspection report which includes a summary of the survey findings, including laboratory analytical results of samples submitted. Inspection report will comply with appropriate federal, state, and local regulations. Deliverables: Final Hazardous Materials Survey Report Assumptions: • District will provide legal right of entry to conduct the scope of work at least three business days prior to scheduled inspection dates. • Sampling will be performed by technicians who are trained and certified to enter confined spaces. Consultants will furnish their own personal protective equipment. District will provide necessary air monitoring, ventilation, and confined space entry rescue crew for work to be performed within the wet well. • District will notify Consultant, prior to mobilization, of any restrictions, special site access requirements, or known potentially hazardous conditions at the site. • If building components are damaged during collection of samples and/or destructive testing, repairs will be made necessary only to restabilize the impacted areas. Consultant is not responsible for returning the impacted area to its pre- sample condition and does not warranty any repairs made. 1.8 Construction Dewatering Analysis • Conduct a desktop evaluation using existing hydrogeologic information including regional geology, regional water levels, and site-specific information from the geotechnical exploration performed in 2022. • Develop a local-scale 3D numerical flow model using MODFLOW, calibrated to existing water level data at the site and in the immediate region. • A probable range of assumed aquifer transmissivity (hydraulic conductivity) and aquifer storage coefficient (specific yield) will be tested in the model. The model output will frame the potential level of effort for dewatering. • Additional dewatering controls for consideration may also be provided depending upon model results. Deliverables: Construction Dewatering Tech Memo 4/27/2026 Page 2 of 5 Scope of Work WSC Bijou Pump Station Rehabilitation Project Assumptions: No additional field work will be performed. Recommendations provided will be conservative and approximate to support bidding purposes only. Task 2 Design Services 2.2 Design Memorandum • Review the Basis of Design memorandum submitted 9/23/2022 and make limited revisions necessary to document and confirm the following decisions: — Pump sizing and selection — Electrical design — Control strategy Deliverables: Revised Basis of Design TM Assumptions: Up to 15 hours are provided for revisions. 2.3 65%, 90%, 95% and Final Design • Review and address District comments on the 90% design submittal. • Revise design documentation to reflect a change in the controls strategy and design to remove the proposed PLC. — Task includes modification of up to six drawing sheets and one technical specification section. — The redesign is assumed to be provided one additional review by STPUD. — Task includes an additional site visit to the pump station to assess suitability of alternative equipment. — Decision to remove PLC from design will be final. No additional effort to return to original design intent is included within this amendment. • Prepare draft plans, technical specifications, and Engineer's Opinion of Probable Construction Cost to 95% completion to capture changes identified in the Basis of Design Memorandum and District comments on the 90% design. — Incorporate additional work to provide all necessary utilities to new trash enclosure, including electrical power for the compactor, floor drain, potential treatment system, and sanitary lateral. — Incorporate all work required to complete TRPA permitting, including recording of new easements. • Review and address District comments on the 95% design submittal. Conduct a 95% design review meeting with District to review and resolve comments. The meeting is expected to be 90 minutes in duration and conducted in-person by the Consultant Project Manager and two Engineers for the Electrical, Instrumentation, and Controls design elements. 4/27/2026 Page 3 of 5 Scope of Work WSC Bijou Pump Station Rehabilitation Project • Conduct a final design review meeting. The meeting is expected to be 90 minutes in duration and conducted virtually. • Prepare final plans and technical specifications for advertisement for bid. Deliverables: 95% plans, specifications and cost estimate; final plans, specifications, bid sheet and cost estimate; comment-response logs and meeting minutes. Assumptions: Assumed drawing sheets are provided and listed in Table 1; Specification sections provided are listed in Table 2 within the original scope of work. Additional sheets that may be provided if determined necessary include: Demolition (1) & Proposed Site Plan (1) for Trash Enclosure Relocation, TRPA Plan Review Sheets (3), Force Main & Valve Improvements (1). 2.4 TRPA and CEQA Final Design Phase • Prepare TRPA Initial Environmental Checklist for project site for District review and approval. • Obtain necessary permits for project implementation, including: — City of South Lake Tahoe Grading Permit — Lahontan Regional Water Quality Control Board authorization for Low Threat Discharge Permit — Prepare application forms and supplemental documentation required for the lot line adjustment associated with property acquisition activities. 2.5 Property Acquisition Services • Acquire one permanent utility easement and one temporary construction easement necessary to complete the upgrades and operate the rehabilitated pump station. • Contact or attempt to contact the property owner six (6) times within the first sixty (60) days following Notice to Proceed, making contacts by phone, email, or postal service. • Develop one appraisal of the estimated fair market value of the rights to be acquired. Appraisal will be a narrative report prepared in conformance with and subject to the requirements of the Uniform Standards of Professional Appraisal Practice. • Provide goodwill loss appraisal services regarding McDonald's restaurant operations on site. Procedures will include: virtual or in-person site and area inspections, coordination with real estate appraiser and/or fixtures and equipment appraiser, review and analysis of historical financial data, review of relevant documents such as leases, and interviews and correspondence with business' management/ownership. Additional services may include industry, economic, and market research to select and employ appropriate valuation methodologies. The appraisal will conform to standards established by USPAP and to relevant sections of the California Code of Civil Procedure pertaining to eminent domain, as well as applicable statutory and case law. 4/27/2026 Page 4 of 5 Scope of Work WS C Bijou Pump Station Rehabilitation Project `/ • Develop contract and conveyance documents necessary to make the offer and acquire the necessary rights. Convey the offer package until acceptance or impasse is reached. • Serve as liaison between title company, escrow holder, and the District and deliver documents and checks to the escrow company, review all documents for submission to escrow companies, and review all title and escrow documents. Deliverables: One preliminary title report for the subject property; electronic appraisal report; Independent appraisal review certificate; goodwill loss appraisal report; acquisition of property rights from one ownership including files on the negotiation, acquisition, and project settlement. Assumptions: District will participate and support coordination of acquisition efforts in a timely manner. District will respond to information requests from Consultant or property owner within five business days. District will coordinate any required signatures within ten business days. District will attend coordination meetings with the property owner when requested. If unforeseen issues arise in performing the appraisal services or if there is significant delay in receiving the necessary information, fees could exceed the estimated amount attached. If such difficulties are encountered, the District will be immediately notified for authorization before proceeding further. 4/27/2026 Page 5 of 5 South Tahoe PUD Bijou Pump Station Rehabilitation Task Order 261.J..J 5/28/2026LW S C WSC TCJA I Stantec I BRI I CME I FACS I UES I ALL FIRMA C co C Task No. Task Description a) Q0 a a ° WSC WSC WSC 2Q IA Labor P Labor Ex Labor Fee Labor Fee Labor Fee Labor Fee Labor Fee Labor Fee Total Fee •E U aU' 0 'E Hours Labor Fee Fee a) E a) o- Q D- j Scott Duren 1 Susan Schlangen I I I. I il Billing rates, $/hr $390 $390 $290 $210 $186 $191 0 Project Mana•ement 0.1 Project Administration 5.75 5.75 37 25 73.5 $ 19,865 $ - $ 19,865 $ 19,865 0.2 Routine Progress Meetings 16 16 $ 4,640 $ - $ 4,640 $ 4,640 SUBTOTAL 5.75 5.75 53 0 25 0 89.5 $ 24,505 $ - $ 24,505 $ - $ - $ - $ - $ - $ - $ 24,505 1 Data Collection, Review& Anal sis 1.4 Alternatives Analysis TM 12 20 32 $ 7,300 $ - $ 7,300MIM $ 7,300 1.7 Hazardous Materials Survey 2 2 $ 580 $ - $ 580 $ 5,419 $ 5,999 SUBTOTAL 0 0 14 0 0 20 34 $ 7,880 $ - $ 7,880 $ - $ - $ - $ - $ 5,419 $ - $ 13,299 2 Desi•n Services 2.2 Design Memorandum 4 6 10 $ 2,306 $ - $ 2,306 $ 2,306 2.3 65%, 90%, 95%and Final Design - - __ 230 $ 51,980 $ 1,000 $ 52,980 $ 218,089 $ 271,069 2.5 TRPA and CEQA Final Design 8 8 $ 2,320 $ - $ 2,320 $ 11,000 $ 13,320 Phase 2.6 Property Acquisition Services 8 $ 2,320 $ - $ 2,320 $ 42,900 $ 45,220 2.7 Geotech Dewatering&Shoring 4 --- 4 $ 1,160 $ - $ 1,160 $ 1,100 $ 9,719 $ 11,979 SUBTOTAL 0 0 89 85 0 86 260 $ 60,086 $ 1,000 $ 61,086 $ 218,089 $ 11,000 $ 42,900 $ 1,100 $ - $ 9,719 $ 343,894 COLUMN TOTALS MEZZEZIL id& 383.5 $ 92,471 $ 1,000 $ 93,471 $ 218,089 $ 11,000 $ 42,900 $ 1,100 $ 5,419 $ 9,719 $ 381,697 10%mark-up on direct expenses; 10%mark-up for sub-contracted services Mileage will be reimbursed at the prevailing federal milage reimbursement rate in effect at the time of travel Rates are subject to revision as of January 1 each year. South Tahoe PUD Bijou Pump Station Rehabilitation-Task Order 2B Project Budget Reconciliation I May 2026 Task No. Task Description TO2 TO2A Total Spent Remaining Cost to Complete TO 2B Request Amount 0 Project Management $ - $ - $ - $ - $ - $ 24,505.00 $ 24,505.00 _ 0.1 Project Administration $ - $ - $ - $ - $ - $ 19,865.00 $ 19,865.00 0.2 Routine Progress Meetings $ - $ - $ - $ - $ - $ 4,640.00 $ 4,640.00 1 Data Collection,Review,and Analysis $116,411.00 $ - $116,411.00 $121,194.92 $ (4,783.92) $ 8,515.08 $ 13,299.00 1.1 Preliminary Design Phase Meetings $ 18,350.00 $ - $ 18,350.00 $ 18,350.00 $ - $ - $ - 1.2 Background Data Request $ 2,770.00 $ - $ 2,770.00 $ 2,770.00 $ - $ - $ - 1.3 Alternatives Analysis $ 26,310.00 $ - $ 26,310.00 $ 26,310.00 $ - $ - $ - 1.4 Alternatives Analysis TM $ 13,630.00 $ - $ 13,630.00 $ 18,413.92 $ (4,783.92) $ 2,516.08 $ 7,300.00 1.5 Dual Forcemain Analysis $ 27,000.00 $ - $ 27,000.00 $ 27,000.00 $ - $ - $ - 1.6 CEQA $ 28,351.00 $ - $ 28,351.00 $ 28,351.00 $ - $ - $ - 1.7 Hazardous Materials Survey $ - $ - $ - $ - $ - $ 5,999.00 $ 5,999.00 2 Design Services $ - $479,002.00 $479,002.00 $430,995.63 $ 48,006.37 $ 391,900.37 $ 343,894.00 2.1 Design Phase Meetings $ - $ 18,570.00 $ 18,570.00 $ 18,570.00 $ - $ - $ - 2.2 Design Memorandum $ - $ 20,170.00 $ 20,170.00 $ 20,170.00 $ - $ 2,306.00 $ 2,306.00 2.3 65%,90%,Final Design $ - $237,610.00 $237,610.00 $210,320.88 $ 27,289.12 $ 298,358.12 $ 271,069.00 2.4 Structural Analysis $ - $ 50,890.00 $ 50,890.00 $ 50,890.00 $ - $ - $ - 2.5 TRPA&CEQA $ - $ 25,969.00 $ 25,969.00 $ 12,464.75 $ 13,504.25 $ 26,824.25 $ 13,320.00 2.6 Property Acquisition Services $ - $ - $ - $ - $ - $ 45,220.00 $ 45,220.00 2.7 Geotech Dewatering&Shoring $ - $ 7,213.00 $ 7,213.00 $ - $ 7,213.00 $ 19,192.00 $ 11,979.00 OT1.1 New wet well/valve vault $ - $ 66,550.00 $ 66,550.00 $ 66,550.00 $ - $ - $ - A-1.1 Dumpster Demo&Relocation $ - $ 35,590.00 $ 35,590.00 $ 35,590.00 $ - $ - $ - A-1.2 Wall Demo, Relocation,Gate Replace $ - $ 16,440.00 $ 16,440.00 $ 16,440.00 $ - $ - $ - TOTAL $116,411.00 $479,002.00 $595,413.00 $552,190.55 $ 43,222.45 $ 424,920.00 $ 381,697.00 ID Task Task Name Duration Start Finish !Predecessors Resource Names 2026 2027 2028 0 Mode H1 H2 H1 I H2 H1 I H2 1 fr Notice to Proceed 0 days Thu 5/12/22 Thu 5/12/22 2 NP4 Data Collection, Review and Analysis 65 days Thu 5/12/22 Wed 8/10/22 14 E4 Design 983 days Wed 7/27/22 Mon 5/4/26 15 ! Controls and Instrumentation Workshop 0 days Wed 7/27/22 Wed 7/27/22 12 16 EP 4 Draft BOD TM & 30% Drawings 20 days Thu 7/28/22 Wed 8/24/22 11 17 EP4 District Review 10 days Thu 8/25/22 Wed 9/7/22 16 18 ! Finalize BOD TM 10 days Thu 9/8/22 Wed 9/21/22 17 19 0: 90% Design 25 days Mon 11/21/22 Fri 12/23/22 17 20 0: Submit 90% Design 0 days Fri 12/23/22 Fri 12/23/22 19 21 0: ! District Review 91 days Tue 1/17/23 Tue 5/23/23 19 22 90% Review Workshop 0 days Tue 4/28/26 Tue 4/28/26 4/28 23 ! Finalize/Decisions for Hydraulics/Alternativ 5 days Tue 4/28/26 Mon 5/4/26 22 T 24 ! 95% Design 60 days Wed 5/24/23 Tue 8/15/23 21 25 EP 4 Submit 95% Design 0 days Tue 8/15/23 Tue 8/15/23 24 26 EP4 District Review 10 days Wed 8/16/23 Tue 8/29/23 24 27 ! 95% Review Workshop 0 days Tue 8/29/23 Tue 8/29/23 26 28 EP4 100% Design 40 days Wed 8/30/23 Tue 10/24/23 27 29 NP4 Submit 100% Design 0 days Tue 10/24/23 Tue 10/24/23 28 30 ! District Review 10 days Wed 10/25/23 Tue 11/7/23 29 31 EP 4 Address 100% Design Comments 15 days Wed 11/8/23 Tue 11/28/23 30 32 EP 4 Submit Final Contract Documents 20 days Wed 11/29/23 Tue 12/26/23 31 33 Min 4 Permitting Assistance 1324 days Thu 5/12/22 Tue 6/8/27 1 34 EP4 CEQA 105 days Thu 5/12/22 Wed 10/5/22 41 NP4 TRPA 287 days Mon 5/4/26 Tue 6/8/27 18 j 1 42 g .1.4 McDonalds Property Coordination 6 mons Mon 5/4/26 Fri 10/16/26 43 EP4 Land Coverage/Capability Verification 15 days Mon 10/19/26 Fri 11/6/26 42 44 !4 TRPA Review of Land 87 days Mon 11/9/26 Tue 3/9/27 43 Coverage/Capability Applications 45 ! Lot Line Adjustment Application 15 days Wed 3/10/27 Tue 3/30/27 44 i-, 46 EP 4 TRPA Review of LLA 40 days Wed 3/31/27 Tue 5/25/27 45 i♦-, 47 ! TRPA QE Submittal 10 days Wed 5/26/27 Tue 6/8/27 46 I 48 EP 4 Bidding Services 50 days Wed 3/31/27 Tue 6/8/27 1 �1-1 56 ! Construction 402 days Wed 6/9/27 Thu 12/21/28 1 1 Page 1 General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6d TO: Board of Directors FROM: Mark Seelos, Water Resources Manager MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: Acquisition of 936 Tanglewood Drive REQUESTED BOARD ACTION: (1) Approve purchase of 936 Tanglewood Drive (El Dorado County Assessor's Parcel Number 31-313-017) in the amount of $425,000; and (2) Authorize the General Manager to execute the associated real estate transaction documents. DISCUSSION: The District has identified 936 Tanglewood Dr. ("the Parcel") as a strategic acquisition to support the construction, long-term operation, maintenance, and resiliency of the Tanglewood Production Well. Combined with the District's adjacent 6,400 square-foot parcel at 942 Tanglewood Drive, acquisition of 936 Tanglewood Drive would create a consolidated station footprint exceeding 19,000 square feet, providing the spatial flexibility needed for maintenance activities, future well redrills, future potential wellhead treatment facilities, or other operational adaptations necessary to maintain reliable water supply performance over time. The Parcel is owned by Tech Ventures QOZB, LLC. Working with realtor Bret Howard, staff contacted the seller to discuss a potential acquisition. During closed sessions held on March 5 and May 21, 2026, the Board authorized staff to proceed with negotiations under a set of approved terms and conditions. The District engaged in the following negotiation process: 1 . Initial Offer: The District submitted an offer of $350,000 with a 17-day inspection contingency period. 2. Seller Response: The seller countered at $425,000 plus transfer of the two Potential Residential Units of Use (PRUUs) associated with the Parcel to the seller. 3. District Counter: The District countered the seller's price to $375,000. 4. Final Seller Counter: The seller countered the District's price at $425,000. 5. Acceptance: The District accepted the seller's final counter. Escrow was opened on May 26, 2026, with Old Republic Title Company, and the District Mark Seelos June 4, 2026 Page 2 wired an earnest money deposit of $6,400. Should the Board choose to proceed with the acquisition, the General Manager would release all contingencies, thereby committing the District to closing the transaction under the agreed-upon terms. SCHEDULE: Upon Board Approval COSTS: $425,000 ACCOUNT NO: 20.30.7006/TNGLWD BUDGETED AMOUNT AVAILABLE: $1,600,000 (Fiscal Year 2027 & allocated budget) IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ® Yes ❑ No ❑ N/A ATTACHMENTS: Vacant Land Purchase Agreement and Accepted Seller Counteroffer No. 2 CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Water GENERAL MANAGER: YES /��r NO CHIEF FINANCIAL OFFICER: YES NO Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC 41- CALIFORNIA DISCLOSURE REGARDING ASSOCIATION REAL ESTATE AGENCY RELATIONSHIP NIX OF REALTORS® (As required by the Civil Code) O (C.A.R.Form AD,Revised 12/24) ❑ (If checked)This form is being provided in connection with a transaction for a leasehold interest exceeding one year as per Civil Code §§2079.13(j), (k), and (I). When you enter into a discussion with a real estate agent regarding a real estate transaction,you should from the outset understand what type of agency relationship or representation you wish to have with the agent in the transaction. SELLER'S AGENT A Seller's agent under a listing agreement with the Seller acts as the agent for the Seller only. A Seller's agent or a subagent of that agent has the following affirmative obligations: To the Seller:A Fiduciary duty of utmost care, integrity, honesty and loyalty in dealings with the Seller. To the Buyer and the Seller: (a) Diligent exercise of reasonable skill and care in performance of the agent's duties. (b) A duty of honest and fair dealing and good faith. (c) A duty to disclose all facts known to the agent materially affecting the value or desirability of the property that are not known to, or within the diligent attention and observation of, the parties. An agent is not obligated to reveal to either party any confidential information obtained from the other party that does not involve the affirmative duties set forth above. BUYER'S AGENT A Buyer's agent can,with a Buyer's consent,agree to act as agent for the Buyer only. This includes a Buyer's agent under a buyer-broker representation agreement with the Buyer. In these situations, the agent is not the Seller's agent, even if by agreement the agent may receive compensation for services rendered, either in full or in part from the Seller. An agent acting only for a Buyer has the following affirmative obligations: To the Buyer:A fiduciary duty of utmost care, integrity, honesty and loyalty in dealings with the Buyer. To the Buyer and the Seller: (a) Diligent exercise of reasonable skill and care in performance of the agent's duties. (b) A duty of honest and fair dealing and good faith. (c) A duty to disclose all facts known to the agent materially affecting the value or desirability of the property that are not known to, or within the diligent attention and observation of, the parties. An agent is not obligated to reveal to either party any confidential information obtained from the other party that does not involve the affirmative duties set forth above. AGENT REPRESENTING BOTH SELLER AND BUYER A real estate agent, either acting directly or through one or more salespersons and broker associates, can legally be the agent of both the Seller and the Buyer in a transaction, but only with the knowledge and consent of both the Seller and the Buyer. In a dual agency situation,the agent has the following affirmative obligations to both the Seller and the Buyer: (a) A fiduciary duty of utmost care, integrity, honesty and loyalty in the dealings with either the Seller or the Buyer. (b) Other duties to the Seller and the Buyer as stated above in their respective sections. In representing both Seller and Buyer,a dual agent may not,without the express permission of the respective party, disclose to the other party confidential information, including, but not limited to, facts relating to either the Buyer's or Seller's financial position, motivations, bargaining position, or other personal information that may impact price, including the Seller's willingness to accept a price less than the listing price or the Buyer's willingness to pay a price greater than the price offered. SELLER AND BUYER RESPONSIBILITIES Either the purchase agreement or a separate document will contain a confirmation of which agent is representing you and whether that agent is representing you exclusively in the transaction or acting as a dual agent. Please pay attention to that confirmation to make sure it accurately reflects your understanding of your agent's role. The above duties of the agent in a real estate transaction do not relieve a Seller or Buyer from the responsibility to protect their own interests. You should carefully read all agreements to assure that they adequately express your understanding of the transaction. A real estate agent is a person qualified to advise about real estate. If legal or tax advice is desired, consult a competent professional. If you are a Buyer,you have the duty to exercise reasonable care to protect yourself, including as to those facts about the property which are known to you or within your diligent attention and observation. Both Sellers and Buyers should strongly consider obtaining tax advice from a competent professional because the federal and state tax consequences of a transaction can be complex and subject to change. Throughout your real property transaction you may receive more than one disclosure form, depending upon the number of agents assisting in the transaction. The law requires each agent with whom you have more than a casual relationship to present you with this disclosure form. You should read its contents each time it is presented to you, considering the relationship between you and the real estate agent in your specific transaction. This disclosure form includes the provisions of§§2079.13 to 2079.24, inclusive,of the Civil Code set forth on page 2. Read it carefully. Note: Real estate broker commissions are not set by law and are fully negotiable. I/WE ACKNOWLEDGE RECEIPT OF A COPY OF THIS DISCLOSURE AND THE PORTIONS OF THE CIVIL CODE PRINTED ON THE SECOND PAGE. ''// Buyer/Seller/Landlord/Tenant / J/W/he4 South Tahoe Public Utility District Date 04/29/2026 Buyer/Seller/Landlord/Tenant Date Agent Berkshire Hathaway Drysdale Properties DRE Lic.# 01499008 ''// J Real Estate Broker(Firm) By lea JYO Bret Howard DRE Lic. # 02099493 Date 04/21/2026 (Salesperson or Broker-Associate,if any) AD REVISED 12/24 (PAGE 1 OF 2) A EQUAL HOUSING OPPORTUNITY DISCLOSURE REGARDING REAL ESTATE AGENCY RELATIONSHIP (AD PAGE 1 OF 2) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC CIVIL§§2079.13-2079.24(2079.16 APPEARS ON THE FRONT) 2079.13.As used in this section and§§2079.7 and 2079.14 to 2079.24,inclusive,the following terms have the following meanings: (a)"Agent" means a person acting under provisions of Title 9 (commencing with §2295) in a real property transaction, and includes a person who is licensed as a real estate broker under Chapter 3(commencing with§ 10130)of Part 1 of Division 4 of the Business and Professions Code, and under whose license a listing is executed or an offer to purchase is obtained. The agent in the real property transaction bears responsibility for that agent's salespersons or broker associates who perform as agents of the agent. When a salesperson or broker associate owes a duty to any principal, or to any buyer or seller who is not a principal, in a real property transaction, that duty is equivalent to the duty owed to that party by the broker for whom the salesperson or broker associate functions. (b) "Buyer" means a transferee in a real property transaction, and includes a person who executes an offer to purchase real property from a seller through an agent, or who seeks the services of an agent in more than a casual,transitory, or preliminary manner,with the object of entering into a real property transaction. "Buyer"includes a vendee or lessee of real property.(c)"Commercial real property" means all real property in the state, except (1) single-family residential real property, (2) dwelling units made subject to Chapter 2 (commencing with § 1940) of Title 5, (3) a mobilehome, as defined in § 798.3, (4) vacant land, or (5) a recreational vehicle, as defined in § 799.29. (d) "Dual agent" means an agent acting, either directly or through a salesperson or broker associate, as agent for both the seller and the buyer in a real property transaction. (e) "Listing agreement" means a written contract between a seller of real property and an agent, by which the agent has been authorized to sell the real property or to find or obtain a buyer, including rendering other services for which a real estate license is required to the seller pursuant to the terms of the agreement. (f) "Seller's agent" means a person who has obtained a listing of real property to act as an agent for compensation. (g) "Listing price" is the amount expressed in dollars specified in the listing for which the seller is willing to sell the real property through the seller's agent. (h) "Offering price" is the amount expressed in dollars specified in an offer to purchase for which the buyer is willing to buy the real property. (i) "Offer to purchase"means a written contract executed by a buyer acting through a buyer's agent that becomes the contract for the sale of the real property upon acceptance by the seller. (j) "Real property"means any estate specified by subdivision (1)or(2) of§761 in property, and includes (1) single-family residential property, (2) multiunit residential property with more than four dwelling units, (3) commercial real property, (4) vacant land, (5) a ground lease coupled with improvements, or (6) a manufactured home as defined in § 18007 of the Health and Safety Code, or a mobilehome as defined in§ 18008 of the Health and Safety Code,when offered for sale or sold through an agent pursuant to the authority contained in § 10131.6 of the Business and Professions Code. (k) "Real property transaction" means a transaction for the sale of real property in which an agent is retained by a buyer, seller, or both a buyer and seller to act in that transaction, and includes a listing or an offer to purchase. (I) "Single-family residential property"or"single-family residential real property" means any of the following: (1) Real property improved with one to four dwelling units, including a leasehold exceeding one year's duration. (2) A unit in a residential stock cooperative, condominium, or planned unit development. (3) A mobilehome or manufactured home when offered for sale or sold through a real estate broker pursuant to § 10131.6 of the Business and Professions Code. (m) "Sell,""sale,"or"sold" refers to a transaction for the transfer of real property from the seller to the buyer and includes exchanges of real property between the seller and buyer,transactions for the creation of a real property sales contract within the meaning of§2985,and transactions for the creation of a leasehold exceeding one year's duration.(n)"Seller"means the transferor in a real property transaction and includes an owner who lists real property with an agent,whether or not a transfer results,or who receives an offer to purchase real property of which he or she is the owner from an agent on behalf of another. "Seller"includes both a vendor and a lessor of real property. (o)"Buyer's agent"means an agent who represents a buyer in a real property transaction. (p) "Buyer-broker representation agreement"means a written contract between a buyer of real property and a buyer's agent by which the buyer's agent has been authorized by the buyer to provide services set forth in subdivision(a)of§10131 of the Business and Professions Code for or on behalf of the buyer for which a real estate license is required pursuant to the terms of the contract. 2079.14(a)A copy of the disclosure form specified in§2079.16 shall be provided in a real property transaction as follows:(1)The seller's agent,if any, shall provide the disclosure form to the seller before entering into a listing agreement. (2)The buyer's agent shall provide the disclosure to the buyer as soon as practicable before the execution of a buyer-broker representation agreement and execution of the buyer's offer to purchase. If the offer to purchase is not prepared by the buyer's agent,the buyer's agent shall present the disclosure form to the buyer not later than the next business day after receiving the offer to purchase from the buyer.(b)The agent providing the disclosure form specified in§2079.16 shall obtain a signed acknowledgement of receipt from the buyer or seller except as provided in§2079.15. 2079.15. In any circumstance in which the seller or buyer refuses to sign an acknowledgment of receipt pursuant to§2079.14,the agent shall set forth, sign,and date a written declaration of the facts of the refusal. 2079.16 Reproduced on Page 1 of this AD form. 2079.17(a)As soon as practicable,the buyer's agent shall disclose to the buyer and seller whether the agent is acting in the real property transaction as the buyer's agent,or as a dual agent representing both the buyer and the seller. This relationship shall be confirmed in the contract to purchase and sell real property or in a separate writing executed or acknowledged by the seller,the buyer,and the buyer's agent prior to or coincident with execution of that contract by the buyer and the seller,respectively.(b)As soon as practicable,the seller's agent shall disclose to the seller whether the seller's agent is acting in the real property transaction as the seller's agent,or as a dual agent representing both the buyer and seller. This relationship shall be confirmed in the contract to purchase and sell real property or in a separate writing executed or acknowledged by the seller and the seller's agent prior to or coincident with the execution of that contract by the seller.(c)The confirmation required by subdivision(a)and(b)shall be in the following form: Seller's Brokerage Firm DO NOT COMPLETE.SAMPLE ONLY License Number Is the broker of(check one):0 the seller;or 0 both the buyer and seller.(dual agent) Seller's Agent DO NOT COMPLETE.SAMPLE ONLY License Number Is(check one):0 the Seller's Agent.(salesperson or broker associate)0 both the Buyer's and Seller's Agent.(dual agent) Buyer's Brokerage DO NOT COMPLETE.SAMPLE ONLY License Number Is the broker of(check one):0 the buyer;or 0 both the buyer and seller.(dual agent) Buyer's Agent DO NOT COMPLETE.SAMPLE ONLY License Number Is(check one):0 the Buyer's Agent.(salesperson or broker associate)0 both the Buyer's and Seller's Agent.(dual agent) (d)The disclosures and confirmation required by this section shall be in addition to the disclosure required by§2079.14. An agent's duty to provide disclosure and confirmation of representation in this section may be performed by a real estate salesperson or broker associate affiliated with that broker. 2079.18(Repealed pursuant to AB-1289) 2079.19 The payment of compensation or the obligation to pay compensation to an agent by the seller or buyer is not necessarily determinative of a particular agency relationship between an agent and the seller or buyer. A listing agent and a selling agent may agree to share any compensation or commission paid,or any right to any compensation or commission for which an obligation arises as the result of a real estate transaction,and the terms of any such agreement shall not necessarily be determinative of a particular relationship. 2079.20 Nothing in this article prevents an agent from selecting, as a condition of the agent's employment, a specific form of agency relationship not specifically prohibited by this article if the requirements of§2079.14 and§2079.17 are complied with. 2079.21 (a)A dual agent may not,without the express permission of the seller,disclose to the buyer any confidential information obtained from the seller. (b)A dual agent may not, without the express permission of the buyer, disclose to the seller any confidential information obtained from the buyer. (c) "Confidential information"means facts relating to the client's financial position, motivations, bargaining position, or other personal information that may impact price,such as the seller is willing to accept a price less than the listing price or the buyer is willing to pay a price greater than the price offered.(d) This section does not alter in any way the duty or responsibility of a dual agent to any principal with respect to confidential information other than price. 2079.22 Nothing in this article precludes a seller's agent from also being a buyer's agent.If a seller or buyer in a transaction chooses to not be represented by an agent,that does not,of itself,make that agent a dual agent. 2079.23(a)A contract between the principal and agent may be modified or altered to change the agency relationship at any time before the performance of the act which is the object of the agency with the written consent of the parties to the agency relationship.(b)A lender or an auction company retained by a lender to control aspects of a transaction of real property subject to this part,including validating the sales price,shall not require,as a condition of receiving the lender's approval of the transaction,the homeowner or listing agent to defend or indemnify the lender or auction company from any liability alleged to result from the actions of the lender or auction company. Any clause,provision,covenant,or agreement purporting to impose an obligation to defend or indemnify a lender or an auction company in violation of this subdivision is against public policy,void,and unenforceable. 2079.24 Nothing in this article shall be construed to either diminish the duty of disclosure owed buyers and sellers by agents and their associate licensees, subagents,and employees or to relieve agents and their associate licensees,subagents,and employees from liability for their conduct in connection with acts governed by this article or for any breach of a fiduciary duty or a duty of disclosure. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTORST AD REVISED 12/24 (PAGE 2 OF 2) EQUAL HOUSING OPPORTUNITY DISCLOSURE REGARDING REAL ESTATE AGENCY RELATIONSHIP (AD PAGE 2 OF 2) Created by Bret Howard with SkySlopea Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC CALIFORNIA VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW = ASSOCIATIONilli INSTRUCTIONS OF REALTORS® (C.A.R.FORM VLPA,Revised 12/25) I' Date Prepared: 03/06/2026 1. OFFER: A. THIS IS AN OFFER FROM South Tahoe Public Utility District ("Buyer"). Individual(s), ❑ A Corporation, ❑ A Partnership, ❑ An LLC, IN Other Public Utility • B. THE PROPERTY to be acquired is 936 Tanglewood Dr ,situated in South Lake Tahoe (City), El Dorado (County), California, 96150 (Zip Code), Assessor's Parcel No(s). 031-313-017-000 ("Property"). Further Described As . (Postal/Mailing address may be different from city jurisdiction. Buyer is advised to investigate.) C. THE TERMS OF THE PURCHASE ARE SPECIFIED BELOW AND ON THE FOLLOWING PAGES. D. Buyer and Seller are referred to herein as the"Parties." Brokers and Agents are not Parties to this Agreement. 2. AGENCY: A. DISCLOSURE: The Parties each acknowledge receipt of a "Disclosure Regarding Real Estate Agency Relationship" (C.A.R. Form AD) if represented by a real estate licensee. Buyer's Agent is not legally required to give to Seller's Agent the AD form Signed by Buyer. Seller's Agent is not legally obligated to give to Buyer's Agent the AD form Signed by Seller. B. CONFIRMATION:The following agency relationships are here confirmed for this transaction. Seller's Brokerage Firm The Oppenheim Group License Number 01983697 Is the broker of(check one): the Seller;or❑both the Buyer and Seller(Dual Agent). Seller's Agent Radley Raven License Number 02041346 Is(check one): the Seller's Agent(Salesperson or broker associate);or❑ both the Buyer's and Seller's Agent(Dual Agent). Buyer's Brokerage Firm Berkshire Hathaway Drysdale Properties License Number 01499008 Is the broker of(check one): IINthe Buyer;or❑ both the Buyer and Seller(Dual Agent). Buyer's Agent Bret Howard License Number 02099493 Is(check one): the Buyer's Agent(Salesperson or broker associate);or 0 both the Buyer's and Seller's Agent(Dual Agent). C. ❑ More than one Brokerage represents 0 Seller, 0 Buyer. See,Additional Broker Acknowledgement(C.A.R. Form ABA). D. POTENTIALLY COMPETING BUYERS AND SELLERS:The Parties each acknowledge receipt of a Q"Possible Representation of More than One Buyer or Seller-Disclosure and Consent"(C.A.R. Form PRBS). 3. TERMS OF PURCHASE AND ALLOCATION OF COSTS: The items in this paragraph are contractual terms of the Agreement. Referenced paragraphs provide further explanation. This form is 17 pages. The Parties are advised to read all 17 pages. Para# Paragraph Title or Contract Term Terms and Conditions Additional Terms A 5,5B(cash) Purchase Price $ 350,000.00 12All Cash B Close Of Escrow(COE) 45 Days after Acceptance OR on (date) C 39A Expiration of Offer 3 calendar days after all Buyer Signature(s)or (date)at 5PM or ❑AM/0 PM D(1) 5A(1) Initial Deposit Amount $ 6,400.00 ( 1.83%of purchase price) within 3(or )business days (%number above is for calculation purposes after OR❑Acceptance by wire transfer and is not a contractual term) D(2) 5A(2) ❑Increased Deposit See attached Increased Deposit Addendum(C.A.R.Form IDA) E(1) 5C(1) Loan Amount(s): First $ ( o.o0%of purchase price) Conventional or,if checked, Interest Rate Fixed rate or❑Initial adjustable rate ❑Seller Financing • not to exceed % 0 Assumed Financing ❑Subject To Financing Points • Buyer to pay up to points to obtain ❑Other: rate above E(2) 5C(2) Additional Financed Amount $ ( o.o0%of purchase price) Conventional or,if checked, Interest Rate Fixed rate or❑Initial adjustable rate ❑Seller Financing • not to exceed % ❑Assumed Financing Points • Buyer to pay up to points to obtain ❑Subject To Financing rate above ❑Other: E(3) 7A Intended Use Investment OR❑ F 5D Balance of Down Payment $ 343,600.00 PURCHASE PRICE TOTAL $ 350,000.00 G SELLER PAYMENT TO COVER BUYER EXPENSES AND COSTS IF G(1) 5E ❑Seller Credit to Buyer $ For closing costs G(2) ADDITIONAL FINANCE TERMS: us ©2025,California Association of REALTORS®,Inc. [—V, A VLPA REVISED 12/25 (PAGE 1 OF 17) Buyer's Initials RI/ / Seller's Initials I EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 1 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 G(3) 21A tgSeller Payment for Buyer's Seller agrees to pay to Buyer's Broker,out of the transaction proceeds, 4 % Obligation to compensate Buyer's of the final purchase price AND,if applicable$ OR, Broker if checked❑$ Para# Paragraph Title or Contract Term Terms and Conditions Additional Terms _ H(1) 5B Verification of All Cash(sufficient Attached to the offer or❑3(or )Days funds) after Acceptance H(2) 6A Verification of Down Payment and Attached to the offer or❑3(or )Days Closing Costs after Acceptance H(3) 6B Verification of Loan Application Attached to the offer or❑3(or )Days ❑Prequalification❑Preapproval after Acceptance ❑Fully underwritten preapproval I I Intentionally Left Blank , J 19 Final Verification of Condition 5(or )Days prior to COE K 26 Assignment Request 17(or )Days after Acceptance L CONTINGENCIES TIME TO REMOVE CONTINGENCIES CONTINGENCY REMOVED L(1) 8A Loan(s) 17(or )Days after Acceptance 131No loan contingency L(2) 8B Appraisal:Appraisal contingency 17(or )Days after Acceptance pNo appraisal contingency based upon appraised value at a mini- Removal of appraisal contingency mum of purchase price or does not eliminate appraisal ❑$ cancellation rights in FVAC. L(3) 8C ❑Purchase of Manufactured Home 17(or )Days after Acceptance Buyer has(or❑has not)entered into ❑Shall remain in effect until the Close Of Es- REMOVAL OR WAIVER OF contract to purchase a personal property crow of the Property manufactured home CONTINGENCY: L(4) 8D ❑Construction Loan Financing 17(or )Days after Acceptance Any contingency in L(1)-L(10) may A draw from the construction loan will be removed or waived by checking not(or❑will)be used to finance the the applicable box above or Property attaching a Contingency Removal L(5) 8E, 15 Investigation of Property 17(or )Days after Acceptance (C.A.R. Form CR-B) and checking the applicable box therein. Removal Informational Access to Property 17(or )Days after Acceptance or Waiver at time of offer is against Buyer's right to access the Property for informational purposes only is NOT a contingency Agent advice. See paragraph 8K. and does NOT create additional cancellation rights for Buyer. L(6) 8F Insurance 17(or )Days after Acceptance ❑CR-B attached L(7) 8G, 17A Review of Seller Documents 17(or )Days after Acceptance,or 5 Days after Delivery,whichever is later L(8) 8H,16A Preliminary("Title")Report 17(or )Days after Acceptance or 5 Days after Delivery,whichever is later L(9) 81, 11 E Common Interest Disclosures 17(or )Days after Acceptance or 5 Per Civil Code§4525 or this Agreement Days after Delivery,whichever is later L(10) 8J,9B(2) Review of leased or liened items 17(or )Days after Acceptance,or 5 (E.g.solar panels or propane tanks) Days after Delivery,whichever is later L(11) 8M Sale of Buyer's Property Sale of Buyer's property is not a contingency,UNLESS checked here:❑ C.A.R.Form COP attached Possession Time for Performance Additional Terms M 3R Vacant Lot Delivery Upon notice of recordation Property to be delivered subject to ❑Lease/tenant in place On COE Date tenant rights,except • N Documents/Fees/Compliance Time for Performance N(1) 17A Seller Delivery of Documents 7(or 10 )Days after Acceptance N(2) 22B Sign and return Escrow Holder General 5(or )Days after receipt Provisions,Supplemental Instructions N(3) 11 E(2) Time to pay fees for ordering HOA 3(or )Days after Acceptance Documents N(4) 31 Evidence of representative authority 3 Days after Acceptance O Intentionally Left Blank P Items Included and Excluded P(1) 9 Items Included-All items specified in Paragraph 9B are included and the following,if checked: ❑ . ❑ . ,--IdE • Vi/ AVLPA REVISED 12/25 (PAGE 2 OF 17) Buyer's Initials %'J/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 2 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 P(2) 9 Excluded Items: ❑ ❑ • ❑ Q Allocation of Costs Para# Item Description Who Pays(if Both is checked,cost to be Additional Terms split equally unless Otherwise Agreed) Q(1) Natural Hazard Zone Disclosure ❑Buyer Seller❑ Both ❑Environmental Report,including tax information ❑ Other ❑Provided by: Q(2) 15B(1)(D) Environmental Survey(Phase I) Buyer ❑ Seller ❑ Both 0(3) 10 Gov't Point of Sale Requirements ❑ Buyer ❑ Seller ❑ Both Inspections and reports Q(4) 22B Escrow Fees ❑ Buyer ❑ Seller 17 Both 50/50 Escrow Holder: Old ❑Each to pay their own fees Republic Title Co. Q(5) 16 Owner's title insurance policy ❑ Buyer IN Seller ❑ Both Title Company(If different from Escrow Holder): Q(6) Buyer's Lender title insurance policy Buyer Unless Otherwise Agreed,Buyer shall purchase any title insurance policy insuring Buyer's lender. Q(7) County transfer tax,fees ❑ Buyer p Seller ❑ Both Q(8) City transfer tax,fees ❑ Buyer ❑ Seller ❑ Both Q(9) 11 E(2) HOA fee for preparing disclosures Seller Q(10) HOA certification fee Buyer Q(11) HOA transfer fees ❑ Buyer ❑ Seller ❑ Both Unless Otherwise Agreed,Seller shall pay for separate HOA move- out fee and Buyer shall pay for separate move-in fee. Applies if separately billed or itemized with cost in transfer fee. Q(12) Private transfer fees Seller,or if checked,❑Buyer ❑Both Q(13) (A) Reports ❑ Buyer ❑ Seller ❑ Both (B) Reports ❑ Buyer ❑ Seller ❑ Both Q(14) (A) fees/costs ❑ Buyer ❑ Seller ❑ Both (B) fees/costs ❑ Buyer ❑ Seller ❑ Both R 12 Additional Tenancy Documents:❑Income and Expense Statements ❑Tenant Estoppel Certificate S OTHER TERMS: 4. PROPERTY ADDENDA AND ADVISORIES:(check all that apply) A. PROPERTY TYPE ADDENDA:This Agreement is subject to the terms contained in the Addenda checked below: ❑Probate Agreement Purchase Addendum(C.A.R. Form PA-PA) ❑Residential Units Purchase Addendum(C.A.R. Form RU-PA) ❑Other B. OTHER ADDENDA:This Agreement is subject to the terms contained in the Addenda checked below: ❑Addendum# (C.A.R. Form ADM) 0 Short Sale Addendum(C.A.R. Form SSA) ❑Back Up Offer Addendum(C.A.R. Form BUO) 0 Court Confirmation Addendum(C.A.R. Form CCA) ❑Assumed Financing Addendum(C.A.R. Form AFA) ❑Septic,Well, Property Monument and Propane Addendum(C.A.R. Form SWPI) ❑Buyer Intent to Exchange Addendum(C.A.R. Form BXA) 0 Seller Intent to Exchange Addendum(C.A.R. Form SXA) ❑Other ❑Other C. BUYER AND SELLER ADVISORIES: (Note:All Advisories below are provided for reference purposes only and are not intended to be incorporated into this Agreement.) lErBuyer's Vacant Land Additional Investigation Advisory(C.A.R. Form BVLIA) 'Fair Housing and Discrimination Advisory(C.A.R. Form FHDA) IgWire Fraud Advisory(C.A.R. Form WFA) Er Cal.Consumer Privacy Act Advisory(C.A.R. Form CCPA) (Parties may also receive a privacy disclosure from their own Agent.) 0 Wildfire Disaster Advisory(C.A.R. Form WFDA) 0 Statewide Buyer and Seller Advisory(C.A.R. Form SBSA) ❑Trust Advisory(C.A.R. Form TA) ❑Probate Advisory(C.A.R. Form PA) ❑REO Advisory(C.A.R. Form REO) 0 Other ❑Other: 0 Other DS VLPA REVISED 12/25 (PAGE 3 OF 17) Buyer's Initials Pi/ / Seller's Initial / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 3 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 5. ADDITIONAL TERMS AFFECTING PURCHASE PRICE: Buyer represents that funds will be good when deposited with Escrow Holder. A. DEPOSIT: (1) INITIAL DEPOSIT:Buyer shall deliver deposit directly to Escrow Holder. If a method other than wire transfer is specified in paragraph 3D(1)and such method is unacceptable to Escrow Holder,then upon notice from Escrow Holder,delivery shall be by wire transfer. (2) RETENTION OF DEPOSIT: Paragraph 36, if initialed by all Parties or otherwise incorporated into this Agreement, specifies a remedy for Buyer's default. Buyer and Seller are advised to consult with a qualified California real estate attorney:(i)Before adding any other clause specifying a remedy(such as release or forfeiture of deposit or making a deposit non-refundable)for failure of Buyer to complete the purchase. Any such clause shall be deemed invalid unless the clause independently satisfies the statutory liquidated damages requirements set forth in the Civil Code;and(ii) Regarding possible liability and remedies if Buyer fails to deliver the deposit. B. ALL CASH OFFER:If an all cash offer is specified in paragraph 3A,no loan is needed to purchase the Property.This Agreement is NOT contingent on Buyer obtaining a loan.Buyer shall,within the time specified in paragraph 3H(1),Deliver written verification of funds sufficient for the purchase price and closing costs. C. LOAN(S): (1) FIRST LOAN: This loan will provide for conventional financing UNLESS Seller Financing (C.A.R. Form SFA), Assumed Financing,Subject to Financing,or Other is checked in paragraph 3E(1). (2) ADDITIONAL FINANCED AMOUNT: If an additional financed amount is specified in paragraph 3E(2), that amount will provide for conventional financing UNLESS Seller Financing(C.A.R.Form SFA),Assumed Financing,Subject To Financing, or Other is checked in paragraph 3E(2). (3) BUYER'S LOAN STATUS:Buyer authorizes Seller and Seller's Authorized Agent to contact Buyer's lender(s)to determine the status of any Buyer's loan specified in paragraph 3E,or any alternate loan Buyer pursues,whether or not a contingency of this Agreement. If the contact information for Buyer's lender(s)is different from that provided under the terms of paragraph 6B, Buyer shall Deliver the updated contact information within 1 Day of Seller's request. (4) ASSUMED OR SUBJECT TO FINANCING: Seller represents that Seller is not delinquent on any payments due on any loans. If the Property is acquired subject to an existing loan, Buyer and Seller are advised to consult with legal counsel regarding the ability of an existing lender to call the loan due,and the consequences thereof. D. BALANCE OF PURCHASE PRICE(DOWN PAYMENT,paragraph 3F)(including all-cash funds)to be deposited with Escrow Holder pursuant to Escrow Holder instructions. E. LIMITS ON CREDITS TO BUYER:Any credit to Buyer as specified in paragraph 3G(1)or Otherwise Agreed,from any source, for closing or other costs that is agreed to by the Parties ("Contractual Credit") shall be disclosed to Buyer's lender, if any, and made at Close Of Escrow. If the total credit allowed by Buyer's lender("Lender Allowable Credit") is less than the Contractual Credit, then (i) the Contractual Credit from Seller shall be reduced to the Lender Allowable Credit, and (ii) in the absence of a separate written agreement between the Parties,there shall be no automatic adjustment to the purchase price to make up for the difference between the Contractual Credit and the Lender Allowable Credit. 6. ADDITIONAL FINANCING TERMS: A. VERIFICATION OF DOWN PAYMENT AND CLOSING COSTS:Written verification of Buyer's down payment and closing costs, within the time specified in paragraph 3H(2)may be made by Buyer or Buyer's lender or loan broker pursuant to paragraph 6B. B. VERIFICATION OF LOAN APPLICATIONS: Buyer shall Deliver to Seller, within the time specified in paragraph 3H(3) a letter from Buyer's lender or loan broker stating that, based on a review of Buyer's written application and credit report, Buyer is prequalified or preapproved for any NEW loan specified in paragraph 3E. If any loan specified in paragraph 3E is an adjustable rate loan,the prequalification or preapproval letter shall be based on the qualifying rate, not the initial loan rate. C. BUYER STATED FINANCING: Seller is relying on Buyer's representation of the type of financing specified (including, but not limited to,as applicable,all cash,amount of down payment,or contingent or non-contingent loan).Seller has agreed to a specific closing date, purchase price, and to sell to Buyer in reliance on Buyer's specified financing. Buyer shall pursue the financing specified in this Agreement, even if Buyer also elects to pursue an alternative form of financing. Seller has no obligation to cooperate with Buyer's efforts to obtain any financing other than that specified in this Agreement but shall not interfere with closing at the purchase price on the COE date(paragraph 3B)even if based upon alternate financing. Buyer's inability to obtain alternate financing does not excuse Buyer from the obligation to purchase the Property and close escrow as specified in this Agreement. 7. CLOSING AND POSSESSION: A. INTENDED USE: Buyer intends to use the Property as indicated in paragraph 3E(3). Intended use may impact available financing. B. CONDITION OF PROPERTY ON CLOSING: Unless Otherwise Agreed: (i) the Property shall be delivered "As-Is" in its PRESENT physical condition as of the date of Acceptance; (ii) the Property, including pool, spa, landscaping and grounds, is to be maintained in substantially the same condition as on the date of Acceptance; and(iii)all debris and personal property not included in the sale shall be removed by Close Of Escrow or at the time possession is delivered to Buyer,if not on the same date. If items are not removed when possession is delivered to Buyer,all items shall be deemed abandoned. Buyer,after first Delivering to Seller written notice to remove the items within 3 Days, may pay to have such items removed or disposed of and may bring Legal Action,as per this Agreement,to receive reasonable costs from Seller. C. Buyer is strongly advised to conduct investigations of the entire Property in order to determine its present condition. Seller and Agents may not be aware of all defects affecting the Property or other factors that Buyer considers important. Property improvements may not be built according to code, in compliance with current Law,or have had all required permits issued and/or finalized. D. Seller shall, on Close Of Escrow unless Otherwise Agreed and even if Seller remains in possession, provide keys, passwords, codes and/or means to operate all locks,mailboxes,and all items included in either paragraph 3P or paragraph 9. If the Property is a condominium or located in a common interest development, Seller shall be responsible for securing or providing any such items for Association amenities,facilities,and access. Buyer may be required to pay a deposit to the Owners'Association("HOA") to obtain keys to accessible HOA facilities. 8. CONTINGENCIES AND REMOVAL OF CONTINGENCIES: A. LOAN(S): (1) This Agreement is, unless otherwise specified in paragraph 3L(1) or an attached CR form, contingent upon Buyer obtaining the loan(s)specified. If contingent, Buyer shall act diligently and in good faith to obtain the designated loan(s). If there is no appraisal contingency or the appraisal contingency has been waived or removed, then failure of the Property to appraise at the purchase price does not entitle Buyer to exercise the cancellation right pursuant to the loan contingency if Buyer is otherwise qualified for the specified loan and Buyer is able to satisfy lender's non- appraisal conditions for closing the loan. [ DS ra/ VLPA REVISED 12/25 (PAGE 4 OF 17) Buyer's Initials Pi/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 4 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 (2) Buyer is advised to investigate the insurability of the Property as early as possible,as this may be a requirement for lending. Buyer's ability to obtain insurance for the Property, including fire insurance,is part of Buyer's Insurance contingency. Failure of Buyer to obtain insurance may justify cancellation based on the Insurance contingency but not the loan contingency. (3) Buyer's contractual obligations regarding deposit,balance of down payment and closing costs are not contingencies of this Agreement, unless Otherwise Agreed. (4) If there is an appraisal contingency,removal of the loan contingency shall not be deemed removal of the appraisal contingency. (5) NO LOAN CONTINGENCY: If"No loan contingency"is checked in paragraph 3L(1),obtaining any loan specified is NOT a contingency of this Agreement. If Buyer does not obtain the loan specified,and as a result is unable to purchase the Property, Seller may be entitled to Buyer's deposit or other legal remedies. B. APPRAISAL: (1) This Agreement is, unless otherwise specified in paragraph 3L(2)or an attached CR form, contingent upon a written appraisal of the Property by a licensed or certified appraiser at no less than the amount specified in paragraph 3L(2), without requiring repairs or improvements to the Property. Appraisals are often a reliable source to verify square footage of the subject Property. However, the ability to cancel based on the measurements provided in an appraisal falls within the Investigation of Property contingency. The appraisal contingency is solely limited to the value determined by the appraisal. For any cancellation based upon this appraisal contingency,Buyer shall Deliver a Copy of the written appraisal to Seller,upon request by Seller. (2) NO APPRAISAL CONTINGENCY: If"No appraisal contingency" is checked in paragraph 3L(2),then Buyer may not use the loan contingency specified in paragraph 3L(1)to cancel this Agreement if the sole reason for not obtaining the loan is that the appraisal relied upon by Buyer's lender values the property at an amount less than that specified in paragraph 3L(2). If Buyer is unable to obtain the loan specified solely for this reason, Seller may be entitled to Buyer's deposit or other legal remedies. (3) FAIR APPRAISAL ACT NOTICE: (A) Any appraisal of the property is required to be unbiased,objective,and not influenced by improper or illegal considerations, including, but not limited to, any of the following: race, color, religion (including religious dress, grooming practices, or both), gender (including, but not limited to, pregnancy, childbirth, breastfeeding, and related conditions, and gender identity and gender expression),sexual orientation, marital status,medical condition, military or veteran status, national origin(including language use and possession of a driver's license issued to persons unable to provide their presence in the United States is authorized under federal law),source of income,ancestry,disability(mental and physical,including, but not limited to, HIV/AIDS status,cancer diagnosis,and genetic characteristics),genetic information,or age. (B) If a buyer or seller believes that the appraisal has been influenced by any of the above factors, the seller or buyer can report this information to the lender or mortgage broker that retained the appraiser and may also file a complaint with the Bureau of Real Estate Appraisers at https://www2.brea.ca.gov/complaint/or call (916)552-9000 for further information on how to file a complaint. C. MANUFACTURED HOME PURCHASE: If checked in paragraph 3L(3), this Agreement is contingent upon Buyer acquiring a personal property manufactured home to be placed on the Property after Close Of Escrow. D. CONSTRUCTION LOAN FINANCING: If checked in paragraph 3L(4), this Agreement is contingent upon Buyer obtaining a construction loan. E. INVESTIGATION OF PROPERTY:This Agreement is,as specified in paragraph 3L(5),contingent upon Buyer's acceptance of the condition of,and any other matter affecting,the Property. F. INSURANCE:This Agreement is, as specified in paragraph 3L(6), contingent upon Buyer's assessment of the availability and approval of the cost for any insurance policy desired under this Agreement. G. REVIEW OF SELLER DOCUMENTS:This Agreement is,as specified in paragraph 3L(7),contingent upon Buyer's review and approval of Seller's documents required in paragraph 17A. H. TITLE: (1) This Agreement is,as specified in paragraph 3L(8), contingent upon Buyer's ability to obtain the title policy provided for in paragraph 16G and on Buyer's review of a current Preliminary Report and items that are disclosed or observable even if not on record or not specified in the Preliminary Report,and satisfying Buyer regarding the current status of title. Buyer is advised to review all underlying documents and other matters affecting title, including, but not limited to, any documents or deeds referenced in the Preliminary Report and any plotted easements. (2) Buyer has 5 Days after receipt to review a revised Preliminary Report,if any,furnished by the Title Company and cancel the transaction if the revised Preliminary Report reveals material or substantial deviations from a previously provided Preliminary Report. I. CONDOMINIUM/PLANNED DEVELOPMENT DISCLOSURES(IF APPLICABLE):This Agreement is,as specified in paragraph 3L(9), contingent upon Buyer's review and approval of Common Interest Disclosures required by Civil Code§4525 and under paragraph 11 E("Cl Disclosures"). J. BUYER REVIEW OF LEASED OR LIENED ITEMS CONTINGENCY (IF APPLICABLE): Buyer's review of and ability and willingness to assume any lease, maintenance agreement or other ongoing financial obligation,or to accept the Property subject to any lien,disclosed pursuant to paragraph 9B(2), is,as specified in paragraph 3L(10),a contingency of this Agreement. Any assumption of the lease shall not require any financial obligation or contribution by Seller. Seller,after first Delivering a Notice to Buyer to Perform, may cancel this Agreement if Buyer, by the time specified in paragraph 3L(10), refuses or is unable to enter into any necessary written agreements to accept responsibility for all obligations of Seller-disclosed leased or liened items. K. REMOVAL OR WAIVER OF CONTINGENCIES WITH OFFER: Buyer shall have no obligation to remove a contractual contingency unless Seller has provided all required documents, reports, disclosures, and information pertaining to that contingency. If Buyer does remove a contingency without first receiving all required information from Seller, Buyer is relinquishing any contractual rights that apply to that contingency. If Buyer removes or waives any contingencies without an adequate understanding of the Property's condition or Buyer's ability to purchase, Buyer is acting against the advice of Agent. L. REMOVAL OF CONTINGENCY OR CANCELLATION: (1) For any contingency specified in paragraph 3L,8,or elsewhere Buyer shall,within the applicable period specified, remove the contingency or cancel this Agreement. (2) For the contingencies for review of Seller Documents, Preliminary Report, and Condominium/Planned Development Disclosures, Buyer shall, within the time specified in paragraph 3L or 5 Days after Delivery of the applicable Seller Documents, Preliminary Report, or CI Disclosures, whichever occurs later, remove the applicable contingency in writing or cancel this Agreement. (3) If Buyer does not remove a contingency within the time specified, Seller,after first giving Buyer a Notice to Buyer to Perform (C.A.R. Form NBP),shall have the right to cancel this Agreement. DS 21 VLPA REVISED 12/25 (PAGE 5 OF 17) Buyer's Initials 211 / Seller's Initials EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 5 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 M. SALE OF BUYER'S PROPERTY: This Agreement and Buyer's ability to obtain financing are NOT contingent upon the sale of any property owned by Buyer unless the Sale of Buyer's Property(C.A.R. Form COP)is checked as a contingency of this Agreement in paragraph 3L(11). 9. ITEMS INCLUDED IN AND EXCLUDED FROM SALE: A. NOTE TO BUYER AND SELLER: Items listed as included or excluded in the Multiple Listing Service (MLS), flyers, marketing materials, or disclosures are NOT included in the purchase price or excluded from the sale unless specified in this paragraph or paragraph 3P or as Otherwise Agreed. Any items included herein are components of the Property and are not intended to affect the price. All items are transferred without Seller warranty. B. ITEMS INCLUDED IN SALE: (1) All EXISTING fixtures and fittings that are attached to the Property; (2) LEASED OR LIENED ITEMS AND SYSTEMS: Seller, within the time specified in paragraph 3N(1), shall (i) disclose to Buyer if any item or system specified in paragraph 3P or 9B or otherwise included in the sale is leased, or not owned by Seller, or is subject to any maintenance or other ongoing financial obligation, or specifically subject to a lien or other encumbrance or loan,and(ii) Deliver to Buyer all written materials(such as lease,warranty,financing,etc.)concerning any such item. (3) Seller represents that all items included in the purchase price, unless Otherwise Agreed, (i) are owned by Seller and shall be transferred free and clear of liens and encumbrances, except the items and systems identified pursuant to paragraph 9B(2),and(ii)are transferred without Seller warranty regardless of value. Seller shall cooperate with the identification of any software or applications and Buyer's efforts to transfer any services needed to operate any Smart Home Features or other items included in this Agreement, including, but not limited to, utilities or security systems. (4) A complete inventory of all personal property of Seller currently used in the operation of the Property and included in the purchase price shall be delivered to Buyer within the time specified in paragraph 3N(1). (5) Seller shall deliver title to the personal property by Bill of Sale, free of all liens and encumbrances, and without warranty of condition. (6) As additional security for any note in favor of Seller for any part of the purchase price, Buyer shall execute a UCC-1 Financing Statement to be filed with the Secretary of State, covering the personal property included in the purchase, replacement thereof,and insurance proceeds. C. ITEMS EXCLUDED FROM SALE:Unless Otherwise Agreed,all items specified in paragraph 3P(2)are excluded from the sale. D. AGRICULTURE/CROPS:Unless Otherwise Agreed,all agriculture and crops on Property at the Close Of Escrow are included in the sale and shall belong to Buyer. Notwithstanding paragraph 13,Seller shall have the right to harvest any agriculture or crops on normally scheduled harvest time prior to Close Of Escrow. In all other circumstances related to any change to agriculture or crops, paragraph 13 shall be in force. 10. ALLOCATION OF COSTS A. INSPECTIONS, REPORTS, TESTS, AND CERTIFICATES: Paragraphs 30(1), (2), (3), and (13) only determine who is to pay for the inspection, report, test, certificate or service mentioned; it does not determine who is to pay for any work recommended or identified in any such document. Agreements for payment of required work should be specified elsewhere in paragraph 3Q, or 3S, or in a separate agreement(such as C.A.R. Forms RR, RRRR, ADM or AEA). Any reports in these paragraphs shall be Delivered in the time specified in Paragraph 3N(1). B. GOVERNMENT POINT OF SALE REQUIREMENTS:Point of sale inspections and reports refer to any such actions required to be completed before or after Close Of Escrow that are required in order to close under any Law. If any point of sale requirement requires repairs,retrofits or additional costs beyond an inspection or report,further written agreement regarding costs is required. If an agreement is reached,and unless Parties Otherwise Agree to another time period,any such repair, retrofit,or work shall be completed prior to final verification of Property. If Buyer agrees to pay for any portion of such repair, Buyer,shall(i)directly pay to the vendor completing the repair or(ii)provide an invoice to Escrow Holder,deposit funds into escrow sufficient to pay for Buyer's portion of such repair and request Escrow Holder pay the vendor completing the repair. If agreement is not reached within the time for removing the Buyer Investigation contingency,then either party may cancel the Agreement. 11. SELLER DISCLOSURES: A. WITHHOLDING TAXES:Buyer and Seller hereby instruct Escrow Holder to withhold the applicable required amounts to comply with federal and California withholding Laws and forward such amounts to the Internal Revenue Service and Franchise Tax Board, respectively. However, no federal withholding is required if, prior to Close Of Escrow, Seller Delivers (i)to Buyer and Escrow Holder a fully completed affidavit(C.A.R. Form AS)sufficient to avoid withholding pursuant to federal withholding Law(FIRPTA); OR (ii)to a qualified substitute (usually a title company or an independent escrow company) a fully completed affidavit(C.A.R. Form AS)sufficient to avoid withholding pursuant to federal withholding Law AND the qualified substitute Delivers to Buyer and Escrow Holder an affidavit signed under penalty of perjury(C.A.R. Form QS)that the qualified substitute has received the fully completed Seller's affidavit and the Seller states that no federal withholding is required; OR (iii) to Buyer other documentation satisfying the requirements under Internal Revenue Code§ 1445 (FIRPTA). No withholding is required under California Law if, prior to Close Of Escrow, Escrow Holder has received sufficient documentation from Seller that no withholding is required, and Buyer has been informed by Escrow Holder. B. MEGAN'S LAW DATABASE DISCLOSURE: Notice: Pursuant to § 290.46 of the Penal Code, information about specified registered sex offenders is made available to the public via an Internet Web site maintained by the Department of Justice at www. meganslaw.ca.gov. Depending on an offender's criminal history, this information will include either the address at which the offender resides or the community of residence and ZIP Code in which he or she resides. (Neither Seller nor Agent are required to check this website.If Buyer wants further information,Agent recommends that Buyer obtain information from this website during Buyer's investigation contingency period.Agents do not have expertise in this area.) C. NOTICE REGARDING GAS AND HAZARDOUS LIQUID TRANSMISSION PIPELINES:This notice is being provided simply to inform you that information about the general location of gas and hazardous liquid transmission pipelines is available to the public via the National Pipeline Mapping System (NPMS) Internet Web site maintained by the United States Department of Transportation at http://www.npms.phmsa.dot.gov/.To seek further information about possible transmission pipelines near the Property,you may contact your local gas utility or other pipeline operators in the area.Contact information for pipeline operators is searchable by ZIP Code and county on the NPMS Internet Website. (Neither Seller nor Agent are required to check this website. If Buyer wants further information,Agent recommends that Buyer obtain information from this website during Buyer's investigation contingency period. Agents do not have expertise in this area.) DS ra/ VLPA REVISED 12/25 (PAGE 6 OF 17) Buyer's Initials Pi/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 6 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 D. NATURAL AND ENVIRONMENTAL HAZARDS:Seller shall,within the time specified in paragraph 3N(1),if required by Law:(i) Deliver to Buyer the earthquake guide and environmental hazards booklet, and for all residential property with 1-4 units and any manufactured or mobile home built before January 1,1960,fully complete and Deliver the Residential Earthquake Risk Disclosure Statement; and (ii) even if exempt from the obligation to provide a NHD, disclose if the Property is located in a Special Flood Hazard Area; Potential Flooding(Inundation)Area;Very High Fire Hazard Zone;State Fire Responsibility Area; Earthquake Fault Zone;Seismic Hazard Zone; and (iii)disclose any other zone as required by Law and provide any other information required for those zones. E. CONDOMINIUM/PLANNED DEVELOPMENT DISCLOSURES: (1) Seller shall, within the time specified in paragraph 3N(1), disclose to Buyer whether the Property is a condominium or is located in a planned development, other common interest development, or otherwise subject to covenants, conditions, and restrictions(C.A.R. Form SPQ or ESD). (2) If the Property is a condominium or is located in a planned development or other common interest development with a HOA, Seller shall, within the time specified in paragraph 3N(3), order from, and pay any required fee as specified in paragraph 3Q(9) for the following items to the HOA (C.A.R. Form HOA-IR) unless Seller has otherwise Delivered to Buyer the most current version of any such document: (i)Copies of any documents required by Law(C.A.R. Form HOA-RS); (ii)disclosure of any pending or anticipated claim or litigation by or against the HOA; (iii) a statement containing the location and number of designated parking and storage spaces; (iv)Copies of the most recent 12 months of HOA minutes for regular and special meetings; (v)the names and contact information of all HOAs governing the Property; (vi) pet restrictions; and (vii)smoking restrictions("Cl Disclosures"). Seller shall itemize and Deliver to Buyer all CI Disclosures received from the HOA and any CI Disclosures in Seller's possession. Seller shall,as directed by Escrow Holder, deposit funds into escrow or direct to HOA or management company to pay for any of the above. F. SOLAR POWER SYSTEMS:For properties with any solar panels or solar power systems,Seller shall,within the time specified in paragraph 3N(1),Deliver to Buyer all known information about the solar panels or solar power system. Seller shall use the Solar Advisory and Questionnaire(C.A.R. Form SOLAR). G. ADDITIONAL DISCLOSURES:Within the time specified in paragraph 3N(1),if Seller has actual knowledge,Seller shall provide to Buyer, in writing,the following information: (1) LEGAL PROCEEDINGS: Any lawsuits by or against Seller, threatening or affecting the Property, including any lawsuits alleging a defect or deficiency in the Property or common areas,or any known notices of abatement or citations filed or issued against the Property. (2) AGRICULTURAL USE: Whether the Property is subject to restrictions for agricultural use pursuant to the Williamson Act (Government Code§§51200-51295). (3) DEED RESTRICTIONS:Any deed restrictions or obligations. (4) FARM USE:Whether the Property is in,or adjacent to,an area with Right to Farm rights(Civil Code§3482.5 and§3482.6). (5) ENDANGERED SPECIES:Presence of endangered,threatened,"candidate"species,or wetlands on the Property. (6) ENVIRONMENTAL HAZARDS:Any substances, materials,or products that may be an environmental hazard including,but not limited to,asbestos,formaldehyde,radon gas,lead-based paint,fuel or chemical storage tanks,and contaminated soil or water on the Property. (7) COMMON WALLS:Any features of the Property shared in common with adjoining landowners,such as walls,fences,roads, and driveways, and agriculture and domestic wells whose use or responsibility for maintenance may have an effect on the Property. (8) LANDLOCKED:The absence of legal or physical access to the Property. (9) EASEMENTS/ENCROACHMENTS: Any encroachments,easements,or similar matters that may affect the Property. (10)SOIL FILL:Any fill(compacted or otherwise),or abandoned mining operations on the Property. (11)SOIL PROBLEMS:Any slippage,sliding,flooding,drainage,grading,or other soil problems. (12)EARTHQUAKE DAMAGE:Major damage to the Property of any of the structures from fire,earthquake,floods,or landslides. (13)ZONING ISSUES:Any zoning violations,non-conforming uses,or violations of"setback"requirements. (14)NEIGHBORHOOD PROBLEMS:Any neighborhood noise problems,or other nuisances. (15)SURVEY, PLANS, PERMITS AND ENGINEERING DOCUMENTS: If in Seller's possession, Copies of surveys, plans, specifications,permits and approvals,development plans,licenses,and engineering documents,if any,prepared on Seller's behalf on in Seller's possession. (16)VIOLATION NOTICES:Seller shall disclose any notice of violations of any Law filed or issued against the Property. H. MELLO-ROOS TAX; 1915 BOND ACT:Within the time specified in paragraph 3N(1), Seller shall: (i) make a good faith effort to obtain a notice from any local agencies that levy a special tax or assessment on the Property (or, if allowed, substantially equivalent notice), pursuant to the Mello-Roos Community Facilities Act, and Improvement Bond Act of 1915, and (ii) promptly Deliver to Buyer any such notice obtained. I. KNOWN MATERIAL FACTS:Seller shall,within the time specified in paragraph 3N(1),DISCLOSE KNOWN MATERIAL FACTS AND DEFECTS affecting the Property, including, but not limited to, known insurance claims within the past five years,or provide Buyer with permission to contact insurer to get such information (C.A.R. Form ARC), and make any and all other disclosures required by Law. J. SELLER VACANT LAND QUESTIONNAIRE:Seller shall,within the time specified in paragraph 3N(1), complete and provide Buyer with a Seller Vacant Land Questionnaire(C.A.R. Form VLQ). K. SUBSEQUENT DISCLOSURES: In the event Seller, prior to Close Of Escrow, becomes aware of adverse conditions materially affecting the Property, or any material inaccuracy in disclosures, information, or representations previously provided to Buyer, Seller shall promptly Deliver a subsequent or amended disclosure or notice, in writing, covering those items. However, a subsequent or amended disclosure shall not be required for conditions and material inaccuracies of which Buyer is otherwise aware or which are disclosed in reports provided to or obtained by Buyer or ordered and paid for by Buyer. 12. TENANCY RELATED DISCLOSURES:Within the time specified in paragraph 3N(1), and subject to Buyer's right of review, Seller shall disclose, make available or Deliver,as applicable,to Buyer,the following information: A. RENTAL/SERVICE AGREEMENTS:(i)All current leases,rental agreements,service contracts,and other agreements pertaining to the operation of the Property; (ii)A rental statement including names of tenants, rental rates, period or rental,date of last rent increase, security deposits, rental concessions, rebates or other benefits, if any, and a list of delinquent rents and their duration. Seller represents that no tenant is entitled to any rebate, concession, or other benefit, except as set forth in these documents. Seller represents that the documents to be furnished are those maintained in the ordinary and normal course of business. B. INCOME AND EXPENSE STATEMENTS:If checked in paragraph 3R,the books and records for the Property, if any, including a statement of income and expense for the 12 months preceding Acceptance. Seller represents that the books and records are those maintained in the ordinary and normal course of business and used by Seller in the computation of federal and state income tax returns. oS ra/ VLPA REVISED 12/25 (PAGE 7 OF 17) Buyer's Initials Pi/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 7 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 C. TENANT ESTOPPEL CERTIFICATES: If checked in paragraph 3R, Tenant Estoppel Certificates (C.A.R. Form TEC). Tenant Estoppel Certificates shall be completed by Seller or Seller's agent and delivered to tenant(s) for tenant(s) to sign and acknowledge: (i) that tenant(s)' rental or lease agreements are unmodified and in full force and effect, (or if modified, stating all such modifications); (ii) that no lessor defaults exist; and (iii) stating the amount of any prepaid rent or security deposit. Seller shall exercise good faith to obtain tenant(s)'signature(s), but Seller cannot guarantee tenant(s)'cooperation. In the event Seller cannot obtain signed Tenant Estoppel Certificates within the time specified above,Seller shall notify Buyer and provide the unsigned one that was provided to tenant(s). If,after the time specified for Seller to Deliver the TEC to Buyer,any tenant(s)sign and return a TEC to Seller,Seller shall Deliver that TEC to Buyer. D. SELLER REPRESENTATIONS: Unless otherwise disclosed under paragraph 11, paragraph 12, or under any disclosure Delivered to Buyer: (1) Seller represents that Seller has no actual knowledge that anytenant(s):(i)has any current pending lawsuit(s),investigation(s), Inquiry(ies), action(s), or other proceeding(s)affecting the Property of the right to use and occupy it; (ii) has any unsatisfied mechanics or materialman lien(s) affecting the Property; and (iii) is the subject of a bankruptcy. If Seller receives any such notice, prior to Close Of Escrow,Seller shall immediately notify Buyer. (2) Seller represents that no tenant is entitled to any rebate,concessions,or other benefit,except as set forth in the rental service agreements. (3) Seller represents that the documents to be furnished are those maintained in the ordinary and normal course of business and the income and expense statements are and used by Seller in the computation of federal and state income tax returns. 13. CHANGES DURING ESCROW: A. Prior to Close Of Escrow, Seller may engage in the following acts("Proposed Changes"),subject to Buyer's rights in paragraph 13B: (i) rent or lease any vacant unit or other part of the premises; (ii) alter, modify, or extend any existing rental or lease agreement;(iii)enter into,alter,modify,or extend any service contract(s);or(iv)change the status of the condition of the Property. B. (1) At least 7 Days prior to any Proposed Changes,Seller shall Deliver written notice to Buyer of such Proposed Change (2) Within 5 Days after receipt of such notice, Buyer, in writing, may give Seller notice of Buyer's objection to the Proposed Changes in which case Seller shall not make the Proposed Changes. 14. SECURITY DEPOSITS: Security deposits, if any, to the extent they have not been applied by Seller in accordance with any rental agreement and current Law,shall be transferred to Buyer on Close Of Escrow. Seller shall notify each tenant, in compliance with the California Civil Code. 15. BUYER'S INVESTIGATION OF PROPERTY AND MATTERS AFFECTING PROPERTY: A. Buyer shall,within the time specified in paragraph 3L(5),have the right,at Buyer's expense unless Otherwise Agreed,to conduct inspections, investigations,tests,surveys and other studies("Buyer Investigations"). B. Buyer Investigations include, but are not limited to: (1) Inspections regarding any physical attributes of the Property or items connected to the Property,such as: (A) A general inspection. (B) An inspection for lead-based paint and other lead-based paint hazards. (C) An inspection specifically for wood destroying pests and organisms. Any inspection for wood destroying pests and organisms shall be prepared by a registered Structural Pest Control company;shall cover the main building and attached structures; may cover detached structures; shall NOT include water tests of shower pans on upper level units unless the owners of property below the shower consent; shall NOT include roof coverings; and, if the Property is a unit in a condominium or other common interest subdivision, the inspection shall include only the separate interest and any exclusive-use areas being transferred, and shall NOT include common areas; and shall include a report("Pest Control Report")showing the findings of the company which shall be separated into sections for evident infestation or infections (Section 1)and for conditions likely to lead to infestation or infection(Section 2). (D) A phase one environmental survey, paid for and obtained by the party indicated in paragraph 30(2). If Buyer is responsible for obtaining and paying for the survey, Buyer shall act diligently and in good faith to obtain such survey within the time specified in paragraph 3L(5). Buyer has 5 Days after receiving the survey to remove this portion of the Buyer's Investigation contingency. (E) Any other specific inspections of the physical condition of the land and improvements. (2) Buyer Investigations of any other matter affecting the Property,other than those that are specified as separate contingencies. Buyer Investigations do not include,among other things,an assessment of the availability and cost of general homeowner's insurance, flood insurance, and fire insurance. See, Buyer's Vacant Land Additional Inspection Advisory (C.A.R. Form BVLIA)for more. C. Without Seller's prior written consent, Buyer shall neither make nor cause to be made: (i) invasive or destructive Buyer Investigations,except for minimally invasive testing required to prepare a Pest Control Report,which shall not include any holes or drilling through stucco or similar material; or(ii) inspections by any governmental building or zoning inspector or government employee,unless required by Law. D. Seller shall make the Property available for all Buyer Investigations.Seller is not obligated to move any existing personal property. Seller shall have water,gas,electricity and all operable pilot lights on for Buyer's Investigations and through the date possession is delivered to Buyer.Buyer shall,(i)by the time specified in paragraph 3L(5),complete Buyer Investigations and satisfy themselves as to the condition of the Property,and either remove the contingency or cancel this Agreement,and(ii)by the time specified in paragraph 3L(5)or 3 Days after receipt of any Investigation report,whichever is later,give Seller at no cost,complete Copies of all such reports obtained by Buyer,which obligation shall survive the termination of this Agreement. This Delivery of Investigation reports shall not include any appraisal. E. Buyer indemnity and Seller protection for entry upon the Property:Buyer shall:(i)keep the Property free and clear of liens; (ii) repair all damage arising from Buyer Investigations; and (iii) indemnify and hold Seller harmless from all resulting liability, claims,demands,damages and costs. Buyer shall carry,or Buyer shall require anyone acting on Buyer's behalf to carry, policies of liability,workers'compensation and other applicable insurance,defending and protecting Seller from liability for any injuries to persons or property occurring during any Buyer Investigations or work done on the Property at Buyer's direction prior to Close Of Escrow. Seller is advised that certain protections may be afforded Seller by recording a"Notice of Non-Responsibility" (C.A.R. Form NNR)for Buyer Investigations and work done on the Property at Buyer's direction. Buyer's obligations under this paragraph shall survive the termination of this Agreement. DS ra/ VLPA REVISED 12/25 (PAGE 8 OF 17) Buyer's Initials Pi/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 8 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 F. BUYER IS STRONGLY ADVISED TO INVESTIGATE THE CONDITION AND SUITABILITY OF ALL ASPECTS OF THE PROPERTY AND ALL MATTERS AFFECTING THE VALUE OR DESIREABILITY OF THE PROPERTY, INCLUDING BUT NOT LIMITED TO, THE ITEMS SPECIFIED BELOW. IF BUYER DOES NOT EXERCISE THESE RIGHTS, BUYER IS ACTING AGAINST THE ADVICE OF BROKERS. BUYER UNDERSTANDS THAT ALTHOUGH CONDITIONS ARE OFTEN DIFFICULT TO LOCATE AND DISCOVER, ALL REAL PROPERTY CONTAINS CONDITIONS THAT ARE NOT READILY APPARENT AND THAT MAY AFFECT THE VALUE OR DESIRABILITY OF THE PROPERTY. BUYER AND SELLER ARE AWARE THAT BROKERS DO NOT GUARANTEE, AND IN NO WAY ASSUME RESPONSIBILITY FOR, THE CONDITION OF THE PROPERTY. BROKERS HAVE NOT AND WILL NOT VERIFY ANY OF THE ITEMS IN PARAGRAPH 15, UNLESS OTHERWISE AGREED IN WRITING. G. SIZE, LINES, ACCESS, AND BOUNDARIES: Lot size, property lines, legal or physical access, and boundaries including features of the Property shared in common with adjoining landowners, such as walls,fences, roads, and driveways, whose use or responsibility for maintenance may have an effect on the Property and any encroachments, easements, or similar matters that may affect the Property. (Fences, hedges, walls, and other natural or constructed barriers or markers do not necessarily identify true Property boundaries. Property lines may be verified by survey.) (Unless otherwise specified in writing,any numerical statements by Brokers regarding lot size are APPROXIMATIONS ONLY,which have not been and will not be verified,and should not be relied upon by Buyer.) H. ZONING AND LAND USE:Past,present,or proposed laws,ordinances,referendums,initiatives,votes,applications,and permits affecting the current use of the Property,future development,zoning, building,size, governmental permits and inspections. Any zoning violations, non-conforming uses, or violations of"setback' requirements. (Buyer should also investigate whether these matters affect Buyer's intended use of the Property. I. UTILITIES AND SERVICES: Availability, costs, restrictions, and location of utilities and services, including but not limited to, sewerage,sanitation,septic and leach lines,water,electricity,gas,telephone,cable TV,and drainage. J. ENVIRONMENTAL HAZARDS: Potential environmental hazards, including but not limited to, asbestos, lead-based paint and other lead contamination,radon,methane,other gases,fuel,oil or chemical storage tanks,contaminated soil or water,hazardous waste, waste disposal sites, electromagnetic fields, nuclear sources, and other substances, including mold (airborne, toxic, or otherwise),fungus or similar contaminant, materials, products,or conditions. K. GEOLOGIC CONDITIONS: Geologic/seismic conditions, soil and terrain stability, suitability and drainage including slippage, sliding,flooding,drainage,grading,fill(compacted or otherwise),or other soil problems. L. NATURAL HAZARD ZONE: Special Flood Hazard Areas, Potential Flooding(Inundation)Areas,Very High Hazard Zones,State Fire Responsibility Areas, Earthquake Fault Zones, Seismic Hazard Zones,or any other zone for which disclosure is required by Law. M. PROPERTY DAMAGE:Major damage to the Property of any of the structures or non-structural systems and components and any personal property included in the sale from fire,earthquake,floods,landslides,or other causes. N. NEIGHBORHOOD, AREA, AND PROPERTY CONDITIONS: Neighborhood or are conditions, including Agricultural Use Restrictions pursuant to the Williamson Act(Government Code§§51200-51295),Right to Farm Laws(Civil Code§3482.5 and§ 3482.6),schools,proximity and adequacy of law enforcement,crime statistics,the proximity of registered felons or offenders,fire protection,other government services,availability,adequacy,and cost of any speed-wired,wireless internet connections,or other telecommunications or other technology services and installations, proximity to commercial, industrial, or agricultural activities, existing and proposed transportation, construction and development that may affect noise, view, or traffic, airport noise, noise or odor from any source, abandoned mining operations on the Property, wild and domestic animals, other nuisances, hazards, or circumstances, protected species, wetland properties, botanical diseases, historic or other governmentally protected sites or improvements, cemeteries, facilities and condition of common areas of common interest subdivisions, and possible lack of compliance with any governing documents or Owners' Association requirements, conditions, and influences of significance to certain cultures and/or religions,and personal needs, requirements,and preferences of Buyer. O. COMMON INTEREST SUBDIVISIONS; OWNER ASSOCIATIONS: Facilities and condition of common areas (facilities such as pools,tennis courts,walkways, or other areas co-owned in undivided interest with others), Owners'Association that has any authority over the subject property, CC&Rs, or other deed restrictions or obligations, and possible lack of compliance with any Owners'Association requirements. P. SPECIAL TAX:Any local agencies that levy a special tax on the Property pursuant to the Mello-Roos Community facilities Act or Improvement Bond Act of 1915. Q. RENTAL PROPERTY RESTRICTIONS: Some cities and counties impose restrictions that limit the amount of rent that can be charged,the maximum number of occupants,and the right of landlord to terminate a tenancy. R. MANUFACTURED HOME PLACEMENT: Conditions that may affect the ability to place and use a manufactured home on the Property. 16. TITLE AND VESTING: A. PRELIMINARY REPORT: Buyer shall, within the time specified in paragraph 3N(1), be provided a current Preliminary Report by the person responsible for paying for the title report in paragraph 30(5). If Buyer is responsible for paying, Buyer shall act diligently and in good faith to obtain such Preliminary Report within the time specified. The Preliminary Report is only an offer by the title insurer to issue a policy of title insurance and may not contain every item affecting title. The company providing the Preliminary Report shall, prior to issuing a Preliminary Report,conduct a search of the General Index for all Sellers except banks or other institutional lenders selling properties they acquired through foreclosure(REOs),corporations,and government entities. B. CONDITION OF TITLE: Title is taken in its present condition subject to all encumbrances, easements, covenants, conditions, restrictions,rights and other matters,whether of record or not,as of the date of Acceptance except for:(i)monetary liens of record unless Buyer is assuming those obligations or taking the Property subject to those obligations;and(ii)those matters which Seller has agreed to remove in writing. For any lien or matter not being transferred upon sale,Seller will take necessary action to deliver title free and clear of such lien or matter. C. DISCLOSURE TO BUYER: Seller shall, within the time specified in paragraph 3N(1), disclose to Buyer all matters known to Seller affecting title,whether of record or not. D. FEDERAL REPORTING REQUIREMENT - GEOGRAPHIC TARGETING ORDER: If Buyer is a legal entity and the Property purchase price is at least $300,000 and the purchase price is made without a bank loan or similar form of external financing, a Geographic Targeting Order(GTO) issued by the Financial Crimes Enforcement Network, U.S. Department of the Treasury, requires title companies to collect and report certain information about the Buyer, depending on where the Property is located. Buyer agrees to cooperate with the title company's effort to comply with the GTO. E. SELLER DELIVERY OF INFORMATION:Seller shall within 7 Days after request,give Escrow Holder necessary information to clear title. DS Fa/ VLPA REVISED 12/25 (PAGE 9 OF 17) Buyer's Initials 2I/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 9 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 F. DEED AND VESTING: Buyer shall, after Close Of Escrow, receive a recorded grant deed or any other conveyance document required to convey title(For example,for stock cooperative or tenancy in common,respectively,an assignment of stock certificate or assignment of seller's interest in the real property),including oil,mineral and water rights if currently owned by Seller. Title shall vest as designated in Buyer's vesting instructions. The recording document shall contain Buyer's post-closing mailing address to enable Buyer's receipt of the recorded conveyance document from the County Recorder. THE MANNER OF TAKING TITLE MAY HAVE SIGNIFICANT LEGAL AND TAX CONSEQUENCES. CONSULT AN APPROPRIATE PROFESSIONAL. G. TITLE INSURANCE POLICY: Buyer shall receive a Standard Coverage Owner's CLTA policy of title insurance. An ALTA policy or the addition of endorsements may provide greater coverage for Buyer. A title company, at Buyer's request, can provide information about the availability,desirability,coverage,and cost of various title insurance coverages and endorsements. If Buyer desires title coverage other than that required by this paragraph, Buyer shall instruct Escrow Holder in writing and shall pay any increase in cost. 17. TIME PERIODS; REMOVAL OF CONTINGENCIES; CANCELLATION RIGHTS: The following time periods may only be extended,altered, modified or changed by mutual written agreement.Any removal of contingencies or cancellation under this paragraph by either Buyer or Seller must be exercised in good faith and in writing (C.A.R. Form CR-B, CR-S or CC). A. SELLER DELIVERY OF DOCUMENTS: Seller shall, within the time specified in paragraph 3N(1), Deliver to Buyer all reports, disclosures and information("Reports")for which Seller is responsible to provide to Buyer as specified in paragraphs 9B(2), 10, 11A, 11D-J, 12A, 12B, 12C, 16A, 16C,31,and, if applicable,C.A.R. Form SWPI. B. BUYER REVIEW OF DOCUMENTS; REPAIR REQUEST;CONTINGENCY REMOVAL OR CANCELLATION (1) Buyer has the time specified in paragraph 3 to: (i) perform Buyer Investigations; review all disclosures, Reports, lease documents to be assumed by Buyer pursuant to paragraph 9B(2), and other applicable information,which Buyer receives from Seller;and approve all matters affecting the Property. (2) Buyer may,within the time specified in paragraph 3L(5),request that Seller make repairs or take any other action regarding the Property (C.A.R. Form RR). Seller has no obligation to agree to or respond to Buyer's requests (C.A.R. Form RR or RRRR). If Seller does not agree or does not respond, Buyer is not contractually entitled to have the repairs or other requests made and may only cancel based on contingencies in this Agreement. (3) Buyer shall, by the end of the times specified in paragraph 3L (or as Otherwise Agreed), Deliver to Seller a removal of the applicable contingency or cancellation of this Agreement (C.A.R. Form CR-B or CC). Buyer is advised not to remove contingencies related to review of documents until after the documents have been Delivered. If Delivery of any Report occurs after a contractual contingency pertaining to that Report has already been waived or removed,the Delivery of the Report does not revive the contingency. (4) Continuation of Contingency:Even after the end of the time specified in paragraph 3L and before Seller cancels, if at all, pursuant to paragraph 17C, Buyer retains the right, in writing, to either(i) remove remaining contingencies, or(ii) cancel this Agreement based on a remaining contingency. Once Buyer's written removal of all contingencies is Delivered to Seller, Seller may not cancel this Agreement pursuant to paragraph 17C(1). C. SELLER RIGHT TO CANCEL: (1) SELLER RIGHT TO CANCEL; BUYER CONTINGENCIES: If, by the time specified in this Agreement, Buyer does not Deliver to Seller a removal of the applicable contingency or cancellation of this Agreement,then Seller,after first Delivering to Buyer a Notice to Buyer to Perform(C.A.R. Form NBP), may cancel this Agreement. In such event,Seller shall authorize the return of Buyer's deposit,except for fees incurred by Buyer. (2) SELLER RIGHT TO CANCEL;BUYER CONTRACT OBLIGATIONS:Seller,after first Delivering to Buyer a Notice to Buyer to Perform,may cancel this Agreement if,by the time specified in this Agreement,Buyer does not take the following action(s): (i) Deposit funds as required by paragraph 3D(1)or 3D(2)or if the funds deposited pursuant to paragraph 3D(1)or 3D(2) are not good when deposited;(ii)Deliver updated contact information for Buyer's lender(s)as required by paragraph 5C(3); (iii) Deliver verification, or a satisfactory verification if Seller reasonably disapproves of the verification already provided, as required by paragraph 5B or 6A; (iv) Deliver a letter as required by paragraph 6B; (v) In writing assume or accept leases or liens specified in paragraph 8J; (vi) Cooperate with the title company's effort to comply with the GTO as required by paragraph 16E; (vii) Provide evidence of authority to Sign in a representative capacity as specified in paragraph 3D(2) and 36; (viii) Sign or initial a separate liquidated damages form for an increased deposit as required by paragraph 3D(2) and 36;or(ix)Perform any additional Buyer contractual obligation(s)included in this Agreement. In such event,Seller shall authorize the return of Buyer's deposit,except for fees allocated to Seller in this Agreement and already paid by Escrow prior to cancellation of this Agreement and notification to Escrow. (3) SELLER RIGHT TO CANCEL; SELLER CONTINGENCIES: Seller may cancel this Agreement by good faith exercise of any Seller contingency included in this Agreement, or Otherwise Agreed,so long as that contingency has not already been removed or waived in writing. D. BUYER RIGHT TO CANCEL: (1) BUYER RIGHT TO CANCEL; SELLER CONTINGENCIES: If, by the time specified in this Agreement, Seller does not Deliver to Buyer a removal of the applicable contingency or cancellation of this Agreement,then Buyer,after first Delivering to Seller a Notice to Seller to Perform(C.A.R. Form NSP),may cancel this Agreement. In such event,Seller shall authorize the return of Buyer's deposit,except for fees allocated to Seller in the Agreement and already paid by Escrow prior to cancellation of this Agreement and notification to Escrow. (2) BUYER RIGHT TO CANCEL;SELLER CONTRACT OBLIGATIONS:If, by the time specified, Seller has not Delivered any item specified in paragraph 3N(1)or Seller has not performed any Seller contractual obligation included in this Agreement by the time specified, Buyer,after first Delivering to Seller a Notice to Seller to Perform, may cancel this Agreement. (3) BUYER RIGHT TO CANCEL; BUYER CONTINGENCIES: Buyer may cancel this Agreement by good faith exercise of any Buyer contingency included in paragraph 8, or Otherwise Agreed, so long as that contingency has not already been removed in writing. E. NOTICE TO BUYER OR SELLER TO PERFORM:The Notice to Buyer to Perform or Notice to Seller to Perform shall: (i) be in writing; (ii) be Signed by the applicable Buyer or Seller; and (iii) give the other Party at least 2 Days after Delivery(or until the time specified in the applicable paragraph,whichever occurs last)to take the applicable action. A Notice to Buyer to Perform or Notice to Seller to Perform may not be Delivered any earlier than 2 Days prior to the Scheduled Performance Day to remove a contingency or cancel this Agreement or meet an obligation specified in paragraph 17, except for Close of Escrow which shall be Delivered under the terms of paragraph 17G,whether or not the Scheduled Performance Day falls on a Saturday,or Sunday or legal holiday. If a Notice to Buyer to Perform or Notice to Seller to Perform is incorrectly Delivered or specifies a time less than the agreed time,the notice shall be deemed invalid and void. However,if the notice is for multiple items,the notice shall be valid for all contingencies and contractual actions for which the Delivery of the notice is within the time permitted in the Agreement and void as to the others. Seller or Buyer shall be required to Deliver a new Notice to Buyer to Perform or Notice to Seller to Perform with the specified timeframe. DS ra/ VLPA REVISED 12/25 (PAGE 10 OF 17) Buyer's Initials 2.1 / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 10 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 F. EFFECT OF REMOVAL OF CONTINGENCIES: (1) REMOVAL OF BUYER CONTINGENCIES: If Buyer removes any contingency or cancellation rights, unless Otherwise Agreed, Buyer shall conclusively be deemed to have: (i) completed all Buyer Investigations, and review of Reports and other applicable information and disclosures pertaining to that contingency or cancellation right; (ii)elected to proceed with the transaction; and(iii)assumed all liability, responsibility and expense for the non-delivery of any Reports, disclosures or information outside of Seller's control and for any Repairs or corrections pertaining to that contingency or cancellation right, or for the inability to obtain financing. (2) REMOVAL OF SELLER CONTINGENCIES: If Seller removes any contingency or cancellation rights, unless Otherwise Agreed, Seller shall conclusively be deemed to have: (i) satisfied themselves regarding such contingency, (ii) elected to proceed with the transaction;and(iii)given up any right to cancel this Agreement based on such contingency. G. DEMAND TO CLOSE ESCROW:Before Buyer or Seller may cancel this Agreement for failure of the other Party to close escrow pursuant to this Agreement, Buyer or Seller must first Deliver to the other Party a Demand to Close Escrow(C.A.R. Form DCE). The DCE shall:(i)be Signed by the applicable Buyer or Seller;and(ii)give the other Party at least 3 Days after Delivery to close escrow.A DCE may not be Delivered any earlier than 3 Days prior to the Scheduled Performance Day for the Close Of Escrow. If a DCE is incorrectly Delivered or specifies a time less than the agreed time,the DCE shall be deemed invalid and void and Seller or Buyer shall be required to Deliver a new DCE. H. EFFECT OF CANCELLATION ON DEPOSITS: If Buyer or Seller gives written notice of cancellation pursuant to rights duly exercised under the terms of this Agreement, the Parties agree to Sign and Deliver mutual instructions to cancel the sale and escrow and release deposits, if any,to the Party entitled to the funds, less(i)fees and costs paid by Escrow Holder on behalf of that Party,if required by this Agreement;and(ii)any escrow fee charged to that party. Fees and costs may be payable to service providers and vendors for services and products provided during escrow. A release of funds will require mutual Signed release instructions from the Parties,judicial decision or arbitration award. A Party may be subject to a civil penalty of up to$1,000 for refusal to Sign cancellation instructions if no good faith dispute exists as to which Party is entitled to the deposited funds (Civil Code § 1057.3). Note: Neither Agents nor Escrow Holder are qualified to provide any opinion on whether either Party has acted in good faith or which Party is entitled to the deposited funds. Buyer and Seller are advised to seek the advice of a qualified California real estate attorney regarding this matter. 18. REPAIRS: Repairs shall be completed prior to final verification of condition unless Otherwise Agreed. Repairs to be performed at Seller's expense may be performed by Seller or through others, provided that the work complies with applicable Law, including governmental permit, inspection and approval requirements. Repairs shall be performed in a good, skillful manner with materials of quality and appearance comparable to existing materials. Buyer acknowledges that exact restoration of appearance or cosmetic items following all Repairs may not be possible. Seller shall: (i) obtain invoices and paid receipts for Repairs performed by others; (ii) prepare a written statement indicating the Repairs performed by Seller and the date of such Repairs; and (iii) provide Copies of invoices and paid receipts and statements to Buyer prior to final verification of condition. 19. FINAL VERIFICATION OF CONDITION:Buyer shall have the right to make a final verification of the Property condition within the time specified in paragraph 3J, NOT AS A CONTINGENCY OF THE SALE, but solely to confirm: (i)the Property is maintained pursuant to paragraph 7B;(ii)Repairs have been completed as agreed;and(iii)Seller has complied with Seller's other obligations under this Agreement(C.A.R. Form VP). 20. PRORATIONS OF PROPERTY TAXES AND OTHER ITEMS:Unless Otherwise Agreed,the following items shall be PAID CURRENT and prorated between Buyer and Seller as of Close Of Escrow: real property taxes and assessments,interest,Seller rental payments, HOA regular assessments due prior to Close Of Escrow, premiums on insurance assumed by Buyer, payments on bonds and assessments assumed by Buyer, and payments on Mello-Roos and other Special Assessment District bonds and assessments that are now a lien. Seller shall pay any HOA special or emergency assessments due prior to Close Of Escrow. The following items shall be assumed by Buyer WITHOUT CREDIT toward the purchase price: prorated payments on Mello-Roos and other Special Assessment District bonds and assessments and HOA special or emergency assessments that are due after Close Of Escrow. Property will be reassessed upon change of ownership. Any supplemental tax bills delivered to Escrow Holder prior to closing shall be prorated and paid as follows: (i)for periods after Close Of Escrow, by Buyer; and (ii)for periods prior to Close Of Escrow, by Seller(see C.A.R. Form SPT or SBSA for further information). Seller agrees all service fees,maintenance costs and utility bills will be paid current up and through the date of Close Of Escrow. TAX BILLS AND UTILITY BILLS ISSUED AFTER CLOSE OF ESCROW SHALL BE HANDLED DIRECTLY BETWEEN BUYER AND SELLER. Prorations shall be made based on a 30-day month. 21. BROKERS AND AGENTS: A. COMPENSATION: (1) Broker Compensation: Seller or Buyer, or both, as applicable, agree to pay compensation to Broker as specified in a separate written agreement between Broker and that Seller or Buyer. The amount of compensation, if a percentage,will be based on the final purchase price. Buyer is advised that Buyer's Broker should not receive compensation from any source in excess of the amount in the buyer representation agreement. Compensation is payable upon Close Of Escrow,or if escrow does not close,as otherwise specified in the agreement between Broker and that Seller or Buyer. (2) Third party beneficiary:Seller acknowledges and agrees that Buyer's Broker is a third-party beneficiary of this Agreement and may pursue Seller for failure to pay the amount specified in this Agreement. B. SCOPE OF DUTY: Buyer and Seller acknowledge and agree that Agent: (i) Does not decide what price Buyer should pay or Seller should accept;(ii)Does not guarantee the condition of the Property;(iii)Does not guarantee the performance,adequacy or completeness of inspections,services,products or repairs provided or made by Seller or others;(iv)Does not have an obligation to conduct an inspection of common areas or areas off the site of the Property;(v)Shall not be responsible for identifying defects on the Property,in common areas,or offsite unless such defects are visually observable by an inspection of reasonably accessible areas of the Property or are known to Agent; (vi)Shall not be responsible for inspecting public records or permits concerning the title or use of Property;(vii)Shall not be responsible for identifying the location of boundary lines or other items affecting title;(viii) Shall not be responsible for verifying square footage, representations of others or information contained in Investigation reports, Multiple Listing Service,advertisements,flyers or other promotional material;(ix)Shall not be responsible for determining the fair market value of the Property or any personal property included in the sale; (x)Shall not be responsible for providing legal or tax advice regarding any aspect of a transaction entered into by Buyer or Seller;and(xi)Shall not be responsible for providing other advice or information that exceeds the knowledge, education and experience required to perform real estate licensed activity. Buyer and Seller agree to seek legal,tax, insurance,title and other desired assistance from appropriate professionals. C. BROKERAGE:Neither Buyer nor Seller has utilized the services of,or for any other reason owes compensation to,a licensed real estate broker(individual or corporate),agent,finder,or other entity,other than as specified in this Agreement, in connection with any act relating to the Property,including,but not limited to,inquiries,introductions,consultations,and negotiations leading to this Agreement. Buyer and Seller each agree to indemnify and hold the other,the Brokers specified herein and their agents,harmless from and against any costs, expenses or liability for compensation claimed inconsistent with the warranty and representation in this paragraph. ra/ VLPA REVISED 12/25 (PAGE 11 OF 17) Buyer's Initials P.// / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 11 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 22. JOINT ESCROW INSTRUCTIONS TO ESCROW HOLDER: A. ESCROW INSTRUCTION PARAGRAPHS:The following paragraphs, or applicable portions thereof, of this Agreement constitute the joint escrow instructions of Buyer and Seller to Escrow Holder, which Escrow Holder is to use along with any related counter offers and addenda,and any additional mutual instructions to close the escrow: paragraphs 1,3A,3B,3D- G, 3N(2), 3Q, 3S, 4A, 4B, 5A(1-2), 5D, 5E, 11A, 11E(2), 16 (except 16D), 17H, 20, 21A, 22, 26, 31, 32, 35, 39, and 40. If a Copy of the separate compensation agreement(s) provided for in paragraph 21A is deposited with Escrow Holder by Agent, Escrow Holder shall accept such agreement(s) and pay out from Buyer's or Seller's funds, or both, as applicable, the Broker's compensation provided for in such agreement(s). The terms and conditions of this Agreement not set forth in the specified paragraphs are additional matters for the information of Escrow Holder, but about which Escrow Holder need not be concerned. B. ESCROW HOLDER GENERAL PROVISIONS: Buyer and Seller will receive Escrow Holder's general provisions, if any,directly from Escrow Holder. To the extent the general provisions are inconsistent or conflict with this Agreement,the general provisions will control as to the duties and obligations of Escrow Holder only. Buyer and Seller shall Sign and return Escrow Holder's general provisions or supplemental instructions within the time specified in paragraph 3N(2). Buyer and Seller shall execute additional instructions,documents and forms provided by Escrow Holder that are reasonably necessary to close the escrow and,as directed by Escrow Holder,within 3 Days, shall pay to Escrow Holder or HOA or HOA management company or others any fee required by paragraphs 3,8, 11,or elsewhere in this Agreement. C. COPIES; STATEMENT OF INFORMATION; TAX WITHHOLDING INSTRUCTIONS: A Copy of this Agreement including any counter offer(s)and addenda shall be delivered to Escrow Holder within 3 Days after Acceptance. Buyer and Seller authorize Escrow Holder to accept and rely on Copies and Signatures as defined in this Agreement as originals, to open escrow and for other purposes of escrow. The validity of this Agreement as between Buyer and Seller is not affected by whether or when Escrow Holder Signs this Agreement. Escrow Holder shall provide Seller's Statement of Information to Title Company when received from Seller,if a separate company is providing title insurance. If Seller delivers an affidavit to Escrow Holder to satisfy Seller's FIRPTA obligation under paragraph 11A, Escrow Holder shall deliver to Buyer, Buyer's Agent,and Seller's Agent a Qualified Substitute statement that complies with federal Law. If Escrow Holder's Qualified Substitute statement does not comply with federal law,the Parties instruct escrow to withhold all applicable required amounts under paragraph 11A. D. BROKER COMPENSATION: (1) Payment:Agents are not a party to the escrow except for the sole purpose of receiving compensation pursuant to paragraph 21A. If a Copy of the separate compensation agreement(s), including if applicable paragraph 3G(3)of this Agreement, is deposited with Escrow Holder by Agent, Escrow Holder shall accept such agreement(s)and pay out from Buyer's or Seller's funds, or both, as applicable, the Broker's compensation provided for in such agreement(s). Buyer and Seller irrevocably assign to Brokers compensation specified in paragraph 21 A,and irrevocably instruct Escrow Holder to disburse those funds to Brokers at Close Of Escrow or pursuant to any other mutually executed cancellation agreement. Buyer's obligation to pay Buyer's Broker shall be offset by any amount that Seller pays Buyer's Broker. Compensation instructions can be amended or revoked only with the written consent of Brokers. Buyer and Seller shall release and hold harmless Escrow Holder from any liability resulting from Escrow Holder's payment to Broker(s)of compensation pursuant to this Agreement. (2) Compensation Disclosure: Escrow Holder shall provide to Buyer a closing statement or other written documentation disclosing the amount of compensation paid to Buyer's Broker. Escrow Holder shall provide to Seller a closing statement or other written documentation disclosing:(i)the amount of compensation paid to Seller's Broker;and(ii)if applicable pursuant to paragraph 3G(3)or other mutual instruction of the parties,the amount paid by Seller for Buyer's Broker compensation. Escrow Holder's obligation pursuant to paragraph 21 D, is not intended to alter any preexisting practice of Escrow Holder to issue, as applicable, joint or separate closing statements. Escrow Holder's obligation pursuant to paragraph 21 D is independent of, but may be satisfied by,any closing statement mandated by Buyer's lender. E. INVOICES: Buyer and Seller acknowledge that Escrow Holder may require invoices for expenses under this Agreement. Buyer and Seller, upon request by Escrow Holder, within 3 Days or within a sufficient time to close escrow, whichever is sooner, shall provide any such invoices to Escrow Holder. F. VERIFICATION OF DEPOSIT: Upon receipt, Escrow Holder shall provide Buyer, Seller, and each Agent verification of Buyer's deposit of funds pursuant to paragraph 5A(1)and C.A.R.Form IDA. Once Escrow Holder becomes aware of any of the following, Escrow Holder shall immediately notify each Agent: (i) if Buyer's initial or any additional deposit or down payment is not made pursuant to this Agreement,or is not good at time of deposit with Escrow Holder;or(ii)if Buyer and Seller instruct Escrow Holder to cancel escrow. G. DELIVERY OF AMENDMENTS: A Copy of any amendment that affects any paragraph of this Agreement for which Escrow Holder is responsible shall be delivered to Escrow Holder within 3 Days after mutual execution of the amendment. 23. SELECTION OF SERVICE PROVIDERS: Agents do not guarantee the performance of any vendors, service or product providers ("Providers"),whether referred by Agent or selected by Buyer, Seller or other person. Buyer and Seller may select ANY Providers of their own choosing. 24. MULTIPLE LISTING SERVICE ("MLS"): Agents are authorized to report to the MLS that an offer has been accepted and, upon Close Of Escrow,the sales price and other terms of this transaction shall be provided to the MLS to be published and disseminated to persons and entities authorized to use the information on terms approved by the MLS. Buyer acknowledges that: (i)any pictures, videos, floor plans (collectively, "Images") or other information about the Property that has been or will be inputted into the MLS or internet portals, or both, at the instruction of Seller or in compliance with MLS rules, will not be removed after Close Of Escrow; (ii) California Civil Code§1088(c)requires the MLS to maintain such Images and information for at least three years and as a result they may be displayed or circulated on the Internet, which cannot be controlled or removed by Seller or Agents; and (iii) Seller, Seller's Agent, Buyer's Agent,and MLS have no obligation or ability to remove such Images or information from the Internet. 25. ATTORNEY FEES AND COSTS:In any Legal Action between Buyer and Seller arising out of this Agreement,the prevailing Buyer or Seller shall be entitled to reasonable attorney fees and costs from the non-prevailing Buyer or Seller,except as provided in paragraph 37A. DS ra/ VLPA REVISED 12/25 (PAGE 12 OF 17) Buyer's Initials Pi/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 12 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 26. ASSIGNMENT/NOMINATION: Buyer shall have the right to assign all of Buyer's interest in this Agreement to Buyer's wholly-owned entity or trust that exists at the time of such assignment. Otherwise, Buyer shall not assign all or any part of Buyer's interest in this Agreement without first obtaining Seller's separate written consent to a specified assignee (C.A.R. Form AOAA). Seller shall not unreasonably withhold such consent. Prior to any assignment,Buyer shall disclose to Seller the name of the assignee and the amount of any monetary consideration between Buyer and assignee. Seller's withholding of consent shall be deemed reasonable if:(i)Buyer is to receive any monetary or other consideration for the assignment; (ii) Buyer makes any misrepresentation(s)to Seller about any aspect of the assignment; or(iii) Buyer Delivers an assignment request to Seller after the time specified in paragraph 3K. Buyer shall provide assignee with all documents related to this Agreement including, but not limited to,the Agreement and any disclosures. If assignee is Buyer's wholly-owned entity or trust,that assignee does not need to re-sign or initial all documents provided. Whether or not an assignment requires seller's consent, at the time of assignment, assignee shall deliver a letter from assignee's lender that assignee is prequalified or preapproved as specified in paragraph 6B. Should assignee fail to deliver such letter, Seller, after first giving assignee a Notice to Buyer to Perform,may terminate the assignment. Any total or partial assignment shall not relieve Buyer of Buyer's obligations pursuant to this Agreement unless Otherwise Agreed by Seller. Parties shall provide any assignment agreement to Escrow Holder within 1 Day after the assignment. Any nomination by Buyer shall be subject to the same procedures,requirements, and terms as an assignment as specified in this paragraph. 27. SUCCESSORS AND ASSIGNS: This Agreement shall be binding upon, and inure to the benefit of, Buyer and Seller and their respective successors and assigns,except as otherwise provided herein. 28. ENVIRONMENTAL HAZARD CONSULATATION:Buyer and Seller acknowledge:(i)Federal,state,and local legislation impose liability upon existing and former owners and users of real property, in applicable situations,for certain legislatively defined, environmentally hazardous substances;(ii)Agent(s)has/have made no representation concerning the applicability of any such Law to this transaction or to Buyer or to Seller, except as otherwise indicated in this Agreement; (iii)Agent(s) has/have made no representation concerning the existence, testing, discovery, location, and evaluation of/for, and risks posed by, environmentally hazardous substances, if any, located on or potentially affecting the Property;and(iv) Buyer and Seller are each advised to consult with technical and legal experts concerning the existence,testing,discovery,location and evaluation of/for,and risks posed by,environmentally hazardous substances, in any, located on or potentially affecting the Property. 29. AMERICANS WITH DISABILITIES ACT: The Americans With Disabilities Act ("ADA") prohibits discrimination against individuals with disabilities. The ADA affects almost all commercial facilities and public accommodations. Residential properties are not typically covered by the ADA, but may be governed by its provisions if used for certain purposes. The ADA can require, among other things, that buildings be made readily accessible to the disabled. Different requirements apply to new construction, alterations to existing buildings,and removal of barriers in existing buildings. Compliance with the ADA may require significant costs. Monetary and injunctive remedies may be incurred if the Property is not in compliance. A real estate broker or agent does not have the technical expertise to determine whether a building is in compliance with ADA requirements,or to advise a principal on those requirements. Buyer and Seller are advised to contact a qualified California real estate attorney,contractor,architect,engineer,or other qualified professional of Buyer or Seller's own choosing to determine to what degree, if any,the ADA impacts that principal or this transaction. 30. COPIES:Seller and buyer each represent that Copies of all reports,certificates,approvals,and other documents that are furnished to the other are true,correct,and unaltered Copies of the original documents,if the originals are in the possession of the furnishing party. 31. LEGALLY AUTHORIZED SIGNER:Wherever the signature or initials of the Legally Authorized Signer identified in paragraph 39 or paragraph 40 appear on this Agreement or any related documents,it shall be deemed to be in a representative capacity for the entity described and not in an individual capacity,unless otherwise indicated. The Legally Authorized Signer(i)represents that the entity for which that person is acting already exists and is in good standing to do business in California and (ii)shall Deliver to the other Party and Escrow Holder,within 3 Days after Acceptance,evidence of authority to act in that capacity(such as but not limited to:applicable portion of the trust or Certification Of Trust(Probate Code§18100.5),letters of testamentary,court order,power of attorney,corporate resolution,or formation documents of the business entity). 32. DEFINITIONS and INSTRUCTIONS: The following words are defined terms in this Agreement, shall be indicated by initial capital letters throughout this Agreement,and have the following meaning whenever used: A. "Acceptance"means the time the offer or final counter offer is fully executed,in writing,by the recipient Party and is Delivered to the offering Party or that Party's Authorized Agent. B. "Agent" means the Broker, salesperson, broker-associate or any other real estate licensee licensed under the brokerage firm identified in paragraph 2B. C. "Agreement" means this document and any counter offers and any incorporated addenda or amendments,collectively forming the binding agreement between the Parties.Addenda and amendments are incorporated only when Signed and Delivered by all Parties. D. "As-Is" condition: Seller shall disclose known material facts and defects as specified in this Agreement. Buyer has the right to inspect the Property and, within the time specified, request that Seller make repairs or take other corrective action, or exercise any contingency cancellation rights in this Agreement. Seller is only required to make repairs specified in this Agreement or as Otherwise Agreed. E. "Authorized Agent" means an individual real estate licensee specified in the Real Estate Broker Section. F. "C.A.R. Form" means the most current version of the specific form referenced or another comparable form agreed to by the Parties. G. "Close Of Escrow",including"COE",means the date the grant deed,or other evidence of transfer of title,is recorded for any real property,or the date of Delivery of a document evidencing the transfer of title for any non-real property transaction. H. "Copy"means copy by any means including photocopy,facsimile and electronic. I. Counting Days is done as follows unless Otherwise Agreed:(1)The first Day after an event is the first full calendar date following the event, and ending at 11:59 pm. For example, if a Notice to Buyer to Perform (C.A.R.form NBP) is Delivered at 3 pm on the 7th calendar day of the month, or Acceptance of a counter offer is personally received at 12 noon on the 7th calendar day of the month,then the 7th is Day"0"for purposes of counting days to respond to the NBP or calculating the Close Of Escrow date or contingency removal dates and the 8th of the month is Day 1 for those same purposes. (2) All calendar days are counted in establishing the first Day after an event. (3)All calendar days are counted in determining the date upon which performance must be completed, ending at 11:59 pm on the last day for performance("Scheduled Performance Day"). (4)After Acceptance, if the Scheduled Performance Day for any act required by this Agreement,including Close Of Escrow,lands on a Saturday,Sunday,or Legal Holiday, the performing party shall be allowed to perform on the next day that is not a Saturday, Sunday or Legal Holiday ("Allowable Performance Day"),and ending at 11:59 pm. "Legal Holiday"shall mean any holiday or optional bank holiday under Civil Code§§7 and 7.1 and any holiday under Government Code§6700.(5)For the purposes of COE,any day that the Recorder's office in the County where the Property is located is closed or any day that the lender or Escrow Holder under this Agreement is closed,the COE shall occur on the next day the Recorder's office in that County,the lender,and the Escrow Holder are open. (6) COE is considered Day 0 for purposes of counting days Seller is allowed to remain in possession,if permitted by this Agreement. DS Pi/ VLPA REVISED 12/25 (PAGE 13 OF 17) Buyer's Initials Pi/ / Seller's Initials / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 13 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 J. "Day" or"Days" means calendar day or days. However,delivery of deposit to escrow is based on business days. K. "Deliver", "Delivered" or "Delivery" of documents, unless Otherwise Agreed, means and shall be effective upon personal receipt of the document by Buyer or Seller or their Authorized Agent. Personal receipt means(i)a Copy of the document, or as applicable,link to the document,is in the possession of the Party or Authorized Agent,regardless of the Delivery method used(i.e. e-mail,text,other). A document,or as applicable link to a document,shall be deemed to be"in possession"if it is located in the in- box for the applicable Party or Authorized Agent;or(ii)an electronic Copy of the document,or as applicable,link to the document, has been sent to the designated electronic delivery address specified in the Real Estate Broker Section unless Otherwise Agreed in C.A.R. Form DEDA. After Acceptance, Agent may change the designated electronic delivery address for that Agent by, in writing, Delivering notice of the change in designated electronic delivery address to the other Party(C.A.R. Form DEDA). Links could be, for example, to DropBox or Google Drive or other functionally equivalent program. If the recipient of a link is unable or unwilling to open the link or download the documents or otherwise prefers Delivery of the documents directly, Recipient of a link shall notify the sender in writing,within 3 Days after Delivery of the link(C.A.R. Form RFR). In such case, Delivery shall be effective upon Delivery of the documents and not the link. Failure to notify sender within the time specified above shall be deemed consent to receive,and recipient opening,the document by link. L. "Electronic Copy"or"Electronic Signature" means,as applicable,an electronic copy or signature complying with California Law. Unless Otherwise Agreed,Buyer and Seller agree to the use of Electronic Signatures. Buyer and Seller agree that electronic means will not be used by either Party to modify or alter the content or integrity of this Agreement without the knowledge and consent of the other Party. M. "Law" means any law, code, statute, ordinance, regulation, rule or order,which is adopted by a controlling city,county,state or federal legislative,judicial or executive body or agency. N. "Legal Action"means a lawsuit or legal proceeding in arbitration or court. O. "Legally Authorized Signer" means an individual who has authority to Sign for the principal as specified in paragraph 39 or paragraph 40. P. "Otherwise Agreed"means an agreement in writing,signed by both Parties and Delivered to each. Q. "Repairs" means any repairs (including pest control), alterations, replacements, modifications or retrofitting of the Property provided for under this Agreement. R. "Sign" or"Signed"means either a handwritten or Electronic Signature on an original document,Copy or any counterpart. 33. EQUAL HOUSING OPPORTUNITY:The Property is sold in compliance with federal,state and local anti-discrimination Laws. 34. TERMS AND CONDITIONS OF OFFER:This is an offer to purchase the Property on the terms and conditions herein. The individual Liquidated Damages and Arbitration of Disputes paragraphs are incorporated in this Agreement if initialed by all Parties or if incorporated by mutual agreement in a Counter Offer or addendum. If at least one but not all Parties initial,a Counter Offer is required until agreement is reached. Seller has the right to continue to offer the Property for sale and to accept any other offer at any time prior to notification of Acceptance and to market the Property for backup offers after Acceptance. The Parties have read and acknowledge receipt of a Copy of the offer and agree to the confirmation of agency relationships. If this offer is accepted and Buyer subsequently defaults, Buyer may be responsible for payment of Brokers' compensation. This Agreement and any supplement, addendum or modification, including any Copy, may be Signed in two or more counterparts, all of which shall constitute one and the same writing. By signing this offer or any document in the transaction,the Party Signing the document is deemed to have read the document in its entirety. 35. TIME OF ESSENCE; ENTIRE CONTRACT; CHANGES: Time is of the essence. All understandings between the Parties are incorporated in this Agreement. Its terms are intended by the Parties as a final,complete and exclusive expression of their Agreement with respect to its subject matter and may not be contradicted by evidence of any prior agreement or contemporaneous oral agreement. If any provision of this Agreement is held to be ineffective or invalid,the remaining provisions will nevertheless be given full force and effect. Except as Otherwise Agreed,this Agreement shall be interpreted,and disputes shall be resolved in accordance with the Laws of the State of California. Neither this Agreement nor any provision in it may be extended, amended, modified, altered or changed,except in writing Signed by Buyer and Seller. 36. LIQUIDATED DAMAGES: If Buyer fails to complete this purchase because of Buyer's default, Seller shall retain, as liquidated damages, the deposit actually paid. Release of funds will require mutual, Signed release instructions from both Buyer and Seller, judicial decision or arbitration award. AT THE TIME OF ANY INCREASED DEPOSIT BUYER AND SELLER SHALL SIGN A SEPARATE LIQUIDATED DAMAGES PROVISION INCORPORATI THE INCREASED DEPOSIT AS LIQUIDATED DAMAGES (C.A.R. FORM DID). Vi/ Buyer's Initials 211 / Seller's Initials / 37. MEDIATION: A. The Parties agree to mediate any dispute or claim arising between them out of this Agreement,or any resulting transaction,before resorting to arbitration or court action. The mediation shall be conducted through the C.A.R. Dispute Resolution Center for Real Estate (www.consumermediation.org) or through any other mediation provider or service mutually agreed to by the Parties. The Parties also agree to mediate any disputes or claims with Agents(s),who, in writing,agree to such mediation prior to,or within a reasonable time after,the dispute or claim is presented to the Agent. Mediation fees,if any,shall be divided equally among the Parties involved, and shall be recoverable under the prevailing party attorney fees clause. If,for any dispute or claim to which this paragraph applies, any Party (i) commences Legal Action without first attempting to resolve the matter through mediation, or(ii) before commencement of Legal Action, refuses to mediate after a request has been made, then that Party shall not be entitled to recover attorney fees,even if they would otherwise be available to that Party in any such action. THIS MEDIATION PROVISION APPLIES WHETHER OR NOT THE ARBITRATION PROVISION IS INITIALED. B. ADDITIONAL MEDIATION TERMS: (i) Exclusions from this mediation agreement are specified in paragraph 39B; (ii) The obligation to mediate does not preclude the right of either Party to seek a preservation of rights under paragraph 39C;and (iii)Agent's rights and obligations are further specified in paragraph 38D. DS � AVLPA REVISED 12/25 (PAGE 14 OF 17) Buyer's Initials Pit / Seller's Initials r / EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 14 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 38. ARBITRATION OF DISPUTES: A. The Parties agree that any dispute or claim in Law or equity arising between them out of this Agreement or any resulting transaction, which is not settled through mediation, shall be decided by neutral, binding arbitration. The Parties also agree to arbitrate any disputes or claims with Agents(s),who,in writing,agree to such arbitration prior to, or within a reasonable time after, the dispute or claim is presented to the Agent. The arbitration shall be conducted through any arbitration provider or service mutually agreed to by the Parties. The arbitrator shall be a retired judge or justice, or an attorney with at least 5 years of transactional real estate Law experience, unless the Parties mutually agree to a different arbitrator. Enforcement of, and any motion to compel arbitration pursuant to, this agreement to arbitrate shall be governed by the procedural rules of the Federal Arbitration Act, and not the California Arbitration Act, notwithstanding any language seemingly to the contrary in this Agreement. The Parties shall have the right to discovery in accordance with Code of Civil Procedure § 1283.05. The arbitration shall be conducted in accordance with Title 9 of Part 3 of the Code of Civil Procedure. Judgment upon the award of the arbitrator(s) may be entered into any court having jurisdiction. B. EXCLUSIONS: The following matters are excluded from mediation and arbitration: (i) Any matter that is within the jurisdiction of a probate, small claims or bankruptcy court; (ii) an unlawful detainer action;and (iii) a judicial or non- judicial foreclosure or other action or proceeding to enforce a deed of trust,mortgage or installment land sale contract as defined in Civil Code§2985. C. PRESERVATION OF ACTIONS:The following shall not constitute a waiver nor violation of the mediation and arbitration provisions: (i) the filing of a court action to preserve a statute of limitations; (ii) the filing of a court action to enable the recording of a notice of pending action, for order of attachment, receivership, injunction, or other provisional remedies, provided the filing party concurrent with,or immediately after such filing, makes a request to the court for a stay of litigation pending any applicable mediation or arbitration proceeding;or(iii)the filing of a mechanic's lien. D. AGENTS: Agents shall not be obligated nor compelled to mediate or arbitrate unless they agree to do so in writing. Any Agents(s) participating in mediation or arbitration shall not be deemed a party to this Agreement. E. "NOTICE: BY INITIALING IN THE SPACE BELOW YOU ARE AGREEING TO HAVE ANY DISPUTE ARISING OUT OF THE MATTERS INCLUDED IN THE `ARBITRATION OF DISPUTES' PROVISION DECIDED BY NEUTRAL ARBITRATION AS PROVIDED BY CALIFORNIA LAW AND YOU ARE GIVING UP ANY RIGHTS YOU MIGHT POSSESS TO HAVE THE DISPUTE LITIGATED IN A COURT OR JURY TRIAL. BY INITIALING IN THE SPACE BELOW YOU ARE GIVING UP YOUR JUDICIAL RIGHTS TO DISCOVERY AND APPEAL, UNLESS THOSE RIGHTS ARE SPECIFICALLY INCLUDED IN THE `ARBITRATION OF DISPUTES' PROVISION. IF YOU REFUSE TO SUBMIT TO ARBITRATION AFTER AGREEING TO THIS PROVISION,YOU MAY BE COMPELLED TO ARBITRATE UNDER THE AUTHORITY OF THE CALIFORNIA CODE OF CIVIL PROCEDURE. YOUR AGREEMENT TO THIS ARBITRATION PROVISION IS VOLUNTARY." "WE HAVE READ AND UNDERSTAND THE FOREGOING AND AGREE TO SUBMIT DISPUTES ARISING OUT OF THE MATTERS INCLUDED IN THE `ARBITRATION OF DISPUTES' PROVISION TO NEUTR alBITRATION." Buyer's Initials ?.// / Seller's Initials / VLPA REVISED 12/25 (PAGE 15 OF 17) EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 15 OF 17) Created by Bret Howard with SkySlope, Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 39. OFFER A. EXPIRATION OF OFFER:This offer shall be deemed revoked and the deposit, if any, shall be returned to Buyer unless by the date and time specified in paragraph 3C, the offer is Signed by Seller and a Copy of the Signed offer is Delivered to Buyer or Buyer's Authorized Agent. Seller has no obligation to respond to an offer made. B. MI ENTITY BUYERS: (Note: If this paragraph is completed, a Representative Capacity Signature Disclosure (C.A.R. Form RCSD) is not required for the Legally Authorized Signers designated below.) (1) Non-Individual (entity) Buyers: One or more Buyers is a trust, corporation, LLC, probate estate, partnership, holding a power of attorney or other entity. (2) Full entity name:The following is the full name of the entity(if a trust,enter the complete trust name;if under probate,enter full name of the estate, including case#): South Lake Tahoe Public Utility District • (3) Contractual Identity of Buyer:For purposes of this Agreement,when the name described below is used,it shall be deemed to be the full entity name. (A) If a trust: The trustee(s) of the trust or a simplified trust name (ex. John Doe, co-trustee, Jane Doe, co-trustee or Doe Revocable Family Trust); (B) If Property is sold under the jurisdiction of a probate court: The name of the executor or administrator, or a simplified probate name(John Doe,executor,or Estate(or Conservatorship)of John Doe). (4) Legally Authorized Signer: (A) This Agreement is being Signed by a Legally Authorized Signer in a representative capacity and not for him/herself as an individual. See paragraph 31 for additional terms. (B) The name(s)of the Legally Authorized Signer(s) is/are: C. The VLPA has 17 pages. Buyer acknowledges receipt of, and has read and understands, every page and all attachments that make up the Agreement. D. BUYER SIGNATURE(S):'/ (Signature)By, 2aut)/Ughes Date: 04/29/2026 Printed name of BUYER: South Tahoe Public Utility District IN Printed Name of Legally Authorized Signer: Paul Hughes Title,if applicable, General Manager (Signature)By, Date: Printed name of BUYER: ❑ Printed Name of Legally Authorized Signer: Title,if applicable, ❑IF MORE THAN TWO SIGNERS, USE Additional Signature Addendum(C.A.R. Form ASA). 40. ACCEPTANCE A. ACCEPTANCE OF OFFER:Seller warrants that Seller is the owner of the Property or has the authority to execute this Agreement. Seller accepts the above offer and agrees to sell the Property on the above terms and conditions. Seller has read and acknowledges receipt of a Copy of this Agreement and authorizes Agent to Deliver a Signed Copy to Buyer. Seller's acceptance is subject to the attached Counter Offer or Back-Up Offer Addendum, or both, checked below. Seller shall return and include the entire agreement with any response. j$[Seller Counter Offer(C.A.R. Form SCO or SMCO) ❑ Back-Up Offer Addendum (C.A.R. Form BUO) B. X ENTITY SELLERS: (Note: If this paragraph is completed, a Representative Capacity Signature Disclosure form (C.A.R. Form RCSD) is not required for the Legally Authorized Signers designated below.) (1) Non-Individual (entity) Sellers: One or more Sellers is a trust, corporation, LLC, probate estate, partnership, holding a power of attorney or other entity. (2) Full entity name:The following is the full name of the entity(if a trust,enter the complete trust name; if under probate,enter full name of the estate, including case#): Tech Ventures QOZB LLC (3) Contractual Identity of Seller:For purposes of this Agreement,when the name described below is used,it shall be deemed to be the full entity name. (A) If a trust: The trustee(s) of the trust or a simplified trust name (ex. John Doe, co-trustee, Jane Doe, co-trustee or Doe Revocable Family Trust); (B) If Property is sold under the jurisdiction of a probate court: The name of the executor or administrator, or a simplified probate name(John Doe,executor,or Estate(or Conservatorship)of John Doe). (4) Legally Authorized Signer: (A) This Agreement is being Signed by a Legally Authorized Signer in a representative capacity and not for him/herself as an individual. See paragraph 31 for additional terms. (B) The name(s)of the Legally Authorized Signer(s) is/arOustin Niglio, as President of,LLC's managing member C. The VLPA has 17 pages. Seller acknowledges receipt of, and has read and understands, every page and all attachments that make up the A ement. DocuSigned by: D. SELLER S GNATURE ): Dus�� ,�/,o j aj 'P,,,de„� o, /./C CO Po awe „a�.- 5/5/2026 (Signature)By, Acre9CCAD4250F418 Date. Printed name of SELLER: Tech Ventures Qozb LLC ❑ Printed Name of Legally Authorized Signer: Dustin Niglio, as President of I I C'$itheaifiagpiigablemb_er (Signature)By, Date: Printed name of SELLER: 0 Printed Name of Legally Authorized Signer: Title, if applicable, 0 IF MORE THAN TWO SIGNERS, USE Additional Signature Addendum(C.A.R. Form ASA). VLPA REVISED 12/25 (PAGE 16 OF 17) EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 16 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 REAL ESTATE BROKERS SECTION: 1. Real Estate Agents are not parties to the Agreement between Buyer and Seller. 2. Agency relationships are confirmed as stated in paragraph 2. 3. Presentation of Offer: Pursuant to the National Association of REALTORS® Standard of Practice 1-7, if Buyer's Agent makes a written request,Seller's Agent shall confirm in writing that this offer has been presented to Seller. 4. Agents'Signatures and designated electronic delivery address: A. Buyer's Brokerage Firm Berkshire Hathaway Drysdale Properties DRE Lic.# 01499008 By O Y iieb.l`/ Bret Howard DRE Lic. # 02099493 Date 04/21/2026 ^^ By !/e124/10 Deb Howard DRE Lic. # 00799233 Date 04/21/2026 Address 3045 Harrison Ave City South Lake Tahoe State CA Zip 96150 Email bret.howard@bhhsdrysdale.com Phone # (530) 318-5439 IS More than one agent from the same firm represents Buyer. Additional Agent Acknowledgement(C.A.R. Form AAA)attached. ❑ More than one brokerage firm represents Buyer. Additional Broker Acknowledgement(C.A.R. Form ABA)attached. Designated Electronic Delivery Address(es): Email above or ❑Attached DEDA:If Parties elect to have an alternative Delivery method,such method may be indicated on C.A.R.Form DEDA. c—DocuSigned by: B. Sel er`sisit•ra•e Firm The oppenheim Group DRE Lic.# 01983697 By • Radley Raven DRE Lic.# 02041346 Date5/5/2026 y �`8E559940523844D._. By DRE Lic.# Date Address City State Zip Email Phone # ❑More than one agent from the same firm represents Seller. Additional Agent Acknowledgement(C.A.R. Form AAA)attached. ❑ More than one brokerage firm represents Seller. Additional Broker Acknowledgement(C.A.R. Form ABA)attached. Designated Electronic Delivery Address(es)(To be filled out by Seller's Agent):Email above or ❑Attached DEDA:If Parties elect to have an alternative Delivery method,such method may be indicated on C.A.R.Form DEDA. R Buyer's Initials Pi/ / Seller's Initials / ESCROW HOLDER ACKNOWLEDGMENT: Escrow Holder acknowledges receipt of a Copy of this Agreement,(if checked,❑a deposit in the amount of$ ),Counter Offer numbers and ,and agrees to act as Escrow Holder subject to paragraph 22 of this Agreement,any supplemental escrow instructions and the terms of Escrow Holder's general provisions. Escrow Holder is advised by that the date of Acceptance of the Agreement is Escrow Holder Escrow# By Date Address Phone/Fax/E-mail Escrow Holder has the following license number# ❑Department of Financial Protection and Innovation, 0 Department of Insurance, 0 Department of Real Estate. PRESENTATION OF OFFER: / Seller's Brokerage Firm presented this offer to Seller on (date). Broker or Designee Initials OFFER NOT ACCEPTED: / No Counter Offer is being made.This offer was not accepted by Seller (date) Seller's Initials ©2025,California Association of REALTORS®,Inc.United States copyright law(Title 17 U.S.Code)forbids the unauthorized distribution,display and reproduction of this form, or any portion thereof, by photocopy machine or any other means,including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER ISTHE PERSON QUALIFIEDTO ADVISE ON REAL ESTATETRANSACTIONS.IFYOU DESIRE LEGAL OR TAX ADVICE,CONSULT AN APPROPRIATE PROFESSIONAL. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of RE.4LT0RS VLPA REVISED 12/25 (PAGE 17 OF 17) EQUAL HOUSING OPPORTUNITY VACANT LAND PURCHASE AGREEMENT AND JOINT ESCROW INSTRUCTIONS (VLPA PAGE 17 OF 17) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC CALIFORNIA POSSIBLE REPRESENTATION OF MORE THAN ONE BUYER ASSOCIATION OR SELLER - DISCLOSURE AND CONSENT _I 1 OF REALTORSo (C.A.R.Form PRBS,Revised 6/25) 1. BROKER AGENCY RELATIONSHIP WITH MULTIPLE PRINCIPALS: A real estate broker ("Brokerage"), whether a corporation, partnership or sole proprietorship, may legally represent more than one buyer or seller. This multiple representation can occur through a sole proprietor Brokerage; or through a salesperson or broker acting under the Brokerage's license ("Associate Licensee"). Associate Licensees under a Brokerage's license may be working out of the same or different office locations, and may or may not know one another. Clients of the Brokerage may have similar goals and may compete against each other for the same property or the same pool of prospective buyers. Some buyers and sellers prefer to work with individual,sole proprietor brokerages,some with brokerages that have multiple licensees, and others with large brokerage companies that have multiple offices and may have a regional, statewide or a national or international presence. Each has its own advantages. It is important for buyers and sellers to understand how the Brokerage representation of multiple buyers or sellers may impact them under various situations. A. MULTIPLE BUYERS: Brokerage (individually or through any of its Associate Licensees) may work with many prospective buyers at the same time. These prospective buyers may have an interest in, and make offers on, the same properties. Some of these properties may be listed by the Brokerage. Whether Brokerage is large or small, it is possible that one Associate-Licensee (agent 1)working with a buyer may not be aware that another Associate- Licensee (agent 2) is working with a different buyer who is interested in viewing or making an offer on the same property as agent 1's client, and vise-versa. Brokerage will not limit or restrict any buyer from making an offer on any specific property, whether or not the Brokerage represents other buyers interested in the same property. B. MULTIPLE SELLERS: Brokerage (individually or through its Associate Licensees) may have listings on many properties at the same time. As a result, Brokerage will attempt to find buyers for each of those listed properties. Some listed properties may appeal to the same prospective buyers. Some properties may attract more prospective buyers than others. Some of these prospective buyers may be represented by Brokerage and some may not. Brokerage will market all listed properties to all prospective buyers, whether or not Brokerage has other listed properties that may appeal to the same prospective buyers. C. DUAL AGENCY IN A TRANSACTION: California law allows a brokerage to represent both a buyer and a seller in a transaction (Civil Code§2079 et seq.). (1) Brokerage Dual Agency: If one Associate-Licensee from the Brokerage is working with a buyer and another Associate-Licensee from the same Brokerage is working with a seller on the same transaction, the Brokerage is considered a dual agent with fiduciary duties to both buyer and seller. In that situation, each individual Associate Licensee working on the transaction is also considered a dual agent having the same knowledge and responsibility as the Brokerage. (2) Single Agent Dual Agency: Another form of dual agency occurs when an individual Associate-Licensee is working with both the buyer and seller in the same transaction. In that situation, both the Brokerage company and the individual Associate-Licensee are dual agents with fiduciary duties to each side of the transaction. There is no one approach to this situation. Some brokerages allow the single agent dual agent to continue to represent both parties, as that Associate-Licensee is the chosen agent of the principal. Some brokerages recommend that the broker or an office manager get involved if there is a dispute between the buyer and seller. Some brokerages will require that the broker or an office manager assist the Associate-Licensee with one principal or the other, even if the parties do not have a dispute. Whether one of these approaches, or another, is taken in a single agent dual agency will depend on the circumstances and the brokerage policy. Regardless of the approach, the Associate-Licensee and Brokerage shall conduct activity consistent with the terms in paragraph 2C. 2. ACKNOWLEDGEMENT AND CONSENT: A. OFFERS ARE NOT NECESSARILY CONFIDENTIAL: Buyer is advised that seller or listing agent may disclose the existence, terms, or conditions of buyer's offer to other interested buyers and agents unless all parties and their agent have signed a written confidentiality agreement, (C.A.R. Form NDA). In the absence of a signed NDA, Buyer consents to such disclosure. Whether any such information is actually disclosed depends on many factors, such as current market conditions,the prevailing practice in the real estate community,the listing agent's marketing strategy, and the instructions of the seller. B. MULTIPLE BUYERS OR SELLERS: If Seller is represented by Brokerage, Seller acknowledges that Brokerage may represent prospective buyers of Seller's property and consents to Brokerage acting as a dual agent for both Seller and buyer in that transaction. If Buyer is represented by Brokerage, Buyer acknowledges that Brokerage may represent sellers of property that Buyer is interested in acquiring and consents to Brokerage acting as a dual agent for both Buyer and seller with regard to that property. C. DUAL AGENCY IN A TRANSACTION: In the event of dual agency, Seller and Buyer agree that: (i) a dual agent may not, without the express permission of the respective party, disclose to the other party confidential information, including, but not limited to, facts relating to either the buyer's or seller's financial position, motivations, bargaining position, or other personal information that may impact price, including the Seller's willingness to accept a price less than the listing price or the Buyer's willingness to pay a price greater than the price offered; and (ii) except as set forth above, a dual agent is obligated to disclose known facts materially affecting the value or desirability of the Property to both parties. Seller and Buyer should discuss with a dual agent the details and parameters of this requirement. Seller and/or Buyer consents to allowing Brokerage to act as a dual agent in a transaction. PRBS REVISED 6/25 (PAGE 1 OF 2) EQUAL HOUSING OPPORTUNITY POSSIBLE REPRESENTATION OF MORE THAN ONE BUYER OR SELLER (PRBS PAGE 1 OF 2) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC By signing below, Buyer and/or Seller acknowledge that each has received a copy of this Possible Representation of More Than One Buyer or Seller- Disclosure and Consent, and each has read, understands, and agrees to its terms and consents to the agency possibilities disclosed. Buyer PSG J/u9IieS South Tahoe Public Utility District Date 04/29/2026 Buyer DocuSigned by: Date y ,1��/0, as P e,,Ie off' LLc co Po a�� w.a„a� Seller Tech Ventures Qozb LLC Date5/5/2026 AGIECAea2s5Fa1a Seller Date Buyer's Brokerage Firm Berkshire Hathaway Drysdale Properties DRE Lic # 01499008 By LQi Bret Howard DRE Lic# 02099493 Date 04/21/2026 Seller' .;e Firm The Oppenheim Group DRE Lic # 01983697 BY \-8E559910523841D Radley Raven DRE Lic# 02041346 Date5/5/2026 © 2025, California Association of REALTORS®, Inc. United States copyright law (Title 17 U.S. Code) forbids the unauthorized distribution, display and reproduction of this form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATE TRANSACTIONS. IF YOU DESIRE LEGAL OR TAX ADVICE, CONSULT AN APPROPRIATE PROFESSIONAL. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTORS' PRBS REVISED 6/25 (PAGE 2 OF 2) EQUAL HOUSING OPPORTUNITY POSSIBLE REPRESENTATION OF MORE THAN ONE BUYER OR SELLER (PRBS PAGE 2 OF 2) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC CALIFORNIA FAIR HOUSING AND DISCRIMINATION ADVISORY Ilk ASSOCIATION (C.A.R.Form FHDA, Revised 12/24) Ilk REALTORS®"' 1. EQUAL ACCESS TO HOUSING FOR ALL: All housing in California is available to all persons. Discrimination as noted below is prohibited by law. Resources are available for those who have experienced unequal treatment under the law. 2. FEDERAL AND STATE LAWS PROHIBIT DISCRIMINATION AGAINST IDENTIFIED PROTECTED CLASSES: A. FEDERAL FAIR HOUSING ACT ("FHA") Title VIII of the Civil Rights Act; 42 U.S.C. §§ 3601-3619; Prohibits discrimination in sales, rental or financing of residential housing against persons in protected classes; B. CALIFORNIA FAIR EMPLOYMENT AND HOUSING ACT("FEHA")California Government Code("GC")§§ 12900-12996,12955; 2 California Code of Regulations ("CCR") §§ 12005-12271; Prohibits discrimination in sales, rental or financing of housing opportunity against persons in protected classes by providers of housing accommodation and financial assistance services as related to housing; C. CALIFORNIA UNRUH CIVIL RIGHTS ACT("Unruh") California Civil Code ("CC") § 51; Prohibits business establishments from discriminating against, and requires full and equal accommodation, advantages,facilities, privileges, and services to persons in protected classes; D. AMERICANS WITH DISABILITIES ACT("ADA")42 U.S.C.§§ 12181-12189;Title III of the ADA prohibits discrimination based on disability in public accommodations;and E. OTHER FAIR HOUSING LAWS:§504 of Rehabilitation Act of 1973 29 U.S.C.§794; Ralph Civil Rights Act CC§51.7;California Disabled Persons Act;CC§§54-55.32;any local city or county fair housing ordinances,as applicable. 3. POTENTIAL LEGAL REMEDIES FOR UNLAWFUL DISCRIMINATION:Violations of fair housing laws may result in monetary civil fines, injunctive relief,compensatory and/or punitive damages,and attorney fees and costs. 4. PROTECTED CLASSES/CHARACTERISTICS: Whether specified in Federal or State law or both, discrimination against persons based on that person's belonging to,association with,or perceived membership in,certain classes or categories,such as the following, is prohibited. Other classes,categories or restrictions may also apply. Race(and race traits) Color Ancestry National Origin Religion Age Sex,Sexual Orientation Gender,Gender Identity, Marital Status Familial Status(family with Gender expression a child or children under 18) Citizenship Immigration Status Primary Language MilitaryNeteran Status Source of Income(e.g., Section 8 Voucher) Medical Condition Disability(Mental&Physical) Genetic Information Criminal History(non- Any Arbitrary Characteristic relevant convictions) or Intersectionality 5. THE CALIFORNIA DEPARTMENT OF REAL ESTATE REQUIRES TRAINING AND SUPERVISION TO PREVENT HOUSING DISCRIMINATION BY REAL ESTATE LICENSEES: A. California Business & Professions Code ("B&PC") § 10170.5(a)(4) requires 3 hours of training on fair housing for DRE license renewal; Real Estate Regulation § 2725(f) requires brokers who oversee salespersons to be familiar with the requirements of federal and state laws relating to the prohibition of discrimination. B. Violation of DRE regulations or real estate laws against housing discrimination by a real estate licensee may result in the loss or suspension of the licensee's real estate license. B&PC§10177(I)(1); 10 CCR§2780 6. REALTOR®ORGANIZATIONS PROHIBIT DISCRIMINATION:NAR Code of Ethics Article 10 prohibits discrimination in employment practices or in rendering real estate license services against any person because of race,color,religion,sex,disability,familial status, national origin,sexual orientation,or gender identity by REALTORS®. 7. WHO IS REQUIRED TO COMPLY WITH FAIR HOUSING LAWS? Below is a non-exclusive list of providers of housing accommodations or financial assistance services as related to housing who are most likely to be encountered in a housing transaction and who must comply with fair housing laws. •Sellers •Landlords/Housing Providers •Sublessors •Real estate licensees •Real estate brokerage firms •Property managers •Mobilehome parks •Homeowners Associations("HOAs"); •Banks and Mortgage lenders •Insurance companies •Government housing services •Appraisers 8. EXAMPLES OF CONDUCT THAT MAY NOT BE MOTIVATED BY DISCRIMINATORY INTENT BUT COULD HAVE A DISCRIMINATORY EFFECT: A. Prior to acceptance of an offer,asking for or offering buyer personal information or letters from the buyer,especially with photos. Those types of documents may inadvertently reveal,or be perceived as revealing,protected status information thereby increasing the risk of(i)actual or unconscious bias, and (ii) potential legal claims against sellers and others by prospective buyers whose offers were rejected. B. Refusing to rent(i)an upper-level unit to an elderly tenant out of concern for the tenant's ability to navigate stairs or(ii) a house with a pool to a person with young children out of concern for the children's safety. 9. EXAMPLES OF UNLAWFUL OR IMPROPER CONDUCT BASED ON A PROTECTED CLASS OR CHARACTERISTIC: A. Refusing to negotiate for a sale, rental or financing or otherwise make a housing opportunity unavailable;failing to present offers due to a person's protected status; B. Refusing or failing to show,rent,sell or finance housing;"channeling"or"steering"a prospective buyer or tenant to or away from a particular area due to that person's protected status or because of the racial,religious or ethnic composition of the neighborhood; C. "Blockbusting"or causing "panic selling" by inducing a listing, sale or rental based on the grounds of loss of value of property, increase in crime, or decline in school quality due to the entry or prospective entry of people in protected categories into the neighborhood; D. Making any statement or advertisement that indicates any preference, limitation,or discrimination; E. Inquiring about protected characteristics(such as asking tenant applicants if they are married, or prospective purchasers if they have children or are planning to start a family); ©2024,California Association of REALTORS®,Inc.FHDA REVISED 12/24(PAGE 1 OF 2) EQUAL HOUSING OPPORTUNITY FAIR HOUSING AND DISCRIMINATION ADVISORY (FHDA PAGE 1 OF 2) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC F. Using criminal history information before otherwise affirming eligibility,and without a legally sufficient justification; G. Failing to assess financial standards based on the portion of the income responsible by a tenant who receives government subsidies (such as basing an otherwise neutral rent to income ratio on the whole rent rather than just the part of rent that is the tenant's responsibility); H. Denying a home loan or homeowner's insurance; I. Offering inferior terms,conditions,privileges,facilities or services; J. Using different qualification criteria or procedures for sale or rental of housing such as income standards,application requirements, application fees,credit analyses,sale or rental approval procedures or other requirements; K. Harassing a person; L. Taking an adverse action based on protected characteristics; M. Refusing to permit a reasonable modification to the premises,as requested by a person with a disability(such as refusing to allow a tenant who uses a wheelchair to install, at their expense, a ramp over front or rear steps, or refusing to allow a tenant with a disability from installing,at their own expense,grab bars in a shower or bathtub); N. Refusing to make reasonable accommodation in policies, rules, practices, or services for a person with a disability(such as the following, if an actual or prospective tenant with a disability has a service animal or support animal): (i) Failing to allow that person to keep the service animal or emotional support animal in rental property, (ii) Charging that person higher rent or increased security deposit,or (iii) Failing to show rental or sale property to that person who is accompanied by the service animal or support animal,and; O. Retaliating for asserting rights under fair housing laws. 10. EXAMPLES OF POSITIVE PRACTICES: A. Real estate licensees working with buyers or tenants should apply the same objective property selection criteria,such as location/ neighborhood, property features,and price range and other considerations,to all prospects. B. Real estate licensees should provide complete and objective information to all clients based on the client's selection criteria. C. Real estate licensees should provide the same professional courtesy in responding to inquiries,sharing of information and offers of assistance to all clients and prospects. D. Housing providers should not make any statement or advertisement that directly or indirectly implies preference, limitation, or discrimination regarding any protected characteristic(such as"no children"or"English-speakers only"). E. Housing providers should use a selection process relying on objective information about a prospective buyer's offer or tenant's application and not seek any information that may disclose any protected characteristics (such as using a summary document, e.g.C.A.R. Form SUM-MO,to compare multiple offers on objective terms). 11. FAIR HOUSING RESOURCES: If you have questions about your obligations or rights under the Fair Housing laws,or you think you have been discriminated against,you may want to contact one or more of the sources listed below to discuss what you can do about it,and whether the resource is able to assist you. A. Federal: https://www.hud.gov/program_offices/fair_housing_equal_opp B. State: https://calcivilrights.ca.gov/housing/ C. Local: local Fair Housing Council office(non-profit,free service) D. DRE: https://www.dre.ca.gov/Consumers/FileComplaint.html E. Local Association of REALTORS®. List available at: https://www.car.org/en/contactus/rosters/localassociationroster. F. Any qualified California fair housing attorney,or if applicable, landlord-tenant attorney. 12. LIMITED EXCEPTIONS TO FAIR HOUSING REQUIREMENTS: No person should rely on any exception below without first seeking legal advice about whether the exception applies to their situation. Real estate licensees are not qualified to provide advice on the application of these exceptions. A. Legally compliant senior housing is exempt from FHA, FEHA and Unruh as related to age or familial status only; B. An owner of a single-family residence who resides at the property with one lodger may be exempt from FEHA for rental purposes, PROVIDED no real estate licensee is involved in the rental; C. An owner of a single-family residence may be exempt from FHA for sale or rental purposes, PROVIDED (i) no real estate licensee is involved in the sale or rental and (ii) no discriminatory advertising is used, and (iii)the owner owns no more than three single-family residences. Other restrictions apply; D. An owner of residential property with one to four units who resides at the property, may be exempt from FHA for rental purposes, PROVIDED no real estate licensee is involved in the rental;and E. Both FHA and FEHA do not apply to roommate situations. See, Fair Housing Council v Roommate.com LLC, 666 F.3d 1216 (2019). F. Since both the 14th Amendment of the U.S. Constitution and the Civil Rights Act of 1866 prohibit discrimination based on race; the FHA and FEHA exemptions do not extend to discrimination based on race. Buyer/Tenant and Seller/Housing Provider have read, understand and acknowledge receipt of a copy of this Fair Housing & Discrimination Advisory. Paul/ J/ South Tahoe Public Utility District Date 04/29/2026 Buyer/Tenant r—DocuSigned/by: Date N' Joy of et,de coy-p o acre atiay� Seller/Housingprovider Tech Venture`S vgozb LLC Date 5/5/2026 —A6IECAu4tb6-Faia Seller/Housing provider Date ©2024,California Association of REALTORS®,Inc.United States copyright law(Title 17 U.S.Code)forbids the unauthorized distribution,display and reproduction of this form, or any portion thereof,by photocopy machine or any other means,including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER ISTHE PERSON QUALIFIEDTO ADVISE ON REAL ESTATETRANSACTIONS.IFYOU DESIRE LEGAL OR TAX ADVICE,CONSULT AN APPROPRIATE PROFESSIONAL. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTORS FHDA REVISED 12/24 (PAGE 2 OF 2) EQUAL HOUSING OPPORTUNITY FAIR HOUSING AND DISCRIMINATION ADVISORY (FHDA PAGE 2 OF 2) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC I CALIFORNIA BUYER HOMEOWNERS' INSURANCE ADVISORY ASSOCIATION (C.A.R.Form BHIA,6/24) _ OF REALTORS* 1- 1. IMPORTANCE OF OBTAINING PROPERTY INSURANCE:If the property you are purchasing is destroyed or damaged due to natural disaster or accident or some other event, insurance may be available to help with the cost of repair or rebuilding. In the absence of property insurance,the homeowner would be responsible for the full expense. If the property is purchased with a loan, or refinanced, the lender will require an insurance policy protecting its interest. Insurance policies can cover damage due to one or more of the following: fire, flood, earthquake and other causes. The policy or an insurance broker should be consulted to determine when coverage applies and whether a supplement or rider can be purchased to provide additional coverage or if a separate policy is necessary. 2. PROPERTY INSURANCE AND PURCHASE CONTRACT TERMS:Your real estate purchase contract may contain a contingency that gives you the right to legally cancel the agreement within a specified time if you are unable to obtain or afford property insurance. This cancellation right may be a specific contingency pertaining to insurance or may be part of an overall investigation contingency. If buyer waives or removes the applicable contingency before determining the availability and cost of property insurance, buyer is acting against the advice of broker. Additionally, if the property is part of an HOA, lenders may require and buyers will want to know that the HOA has adequate insurance to cover the areas for which the HOA is responsible. 3. CALIFORNIA'S PROPERTY INSURANCE MARKET: Some insurance carriers in California have stopped issuing new property insurance policies and others are limiting the number and location of new policies,due to rising replacement costs and an increase in natural disasters. These changes may affect both the availability and cost of insurance. However, over 50 insurance carriers are admitted to sell property insurance in California so it may be possible to obtain insurance even if some carriers will not write a new policy covering the property you intend to buy. An insurance broker may also be able to find a non-admitted insurance carrier offering to insure the property you intend to buy. Because locating an affordable insurance policy could take time and effort, buyers are advised to make all insurance inquiries as early in the home buying process as possible. 4. INSURANCE CONDITIONS: Many insurance carriers impose physical condition standards before issuing a policy, or reserve the right to cancel policies even after they are issued, if certain minimum standards are not confirmed in an inspection or otherwise. Physical conditions standards could include, but are not limited to, prohibition of"knob and tube" electrical wiring, requirements related to piping/plumbing materials,standards related to the age and/or quality of the roof or foundation, minimal safety standards related to handrails,tripping hazards, and defensible space requirements. 5. RESOURCES: The California Department of Insurance (DOI) maintains a website addressing Residential Home insurance. Resources on this State government webpage include: (i)Top Ten tips for Finding Residential Insurance; (ii) Residential Insurance Company Contact List; (iii) Home Insurance Finder; and (iv) information on other insurance issues. The webpage also includes information on how to contact the DOI, and suggestions on what to do if you cannot find insurance. The webpage and link to other documents is located at https://www.insurance.ca.gov/01-consumers/105- type/5-residential/index.cfm. 6. BROKER RECOMMENDATION: Buyer is advised to explore available property insurance options early in the home buying process and to consult with a qualified insurance professional of buyer's choosing to understand insurance availability and cost prior to removal of any related contingencies. Real estate brokers do not have expertise in this area. By signing below, Buyer acknowledges that Buyer has read, understands, and has received a copy of this Buyer Homeowners' Insurance Advisory. Buyer: Paul J/u9hee5 South Tahoe Public Utility District Date: 04/29/2026 Buyer: Date: ©2024,California Association of REALTORS®,Inc.United States copyright law(Title 17 U.S.Code)forbids the unauthorized distribution,display and reproduction of this form, or any portion thereof,by photocopy machine or any other means,including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATETRANSACTIONS.IFYOU DESIRE LEGAL OR TAX ADVICE,CONSULT AN APPROPRIATE PROFESSIONAL. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTORS' A BHIA 6/24 (PAGE 1 OF 1) EQUAL HOUSING OPPORTUNITY BUYER HOMEOWNERS' INSURANCE ADVISORY (BHIA PAGE 1 OF 1) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC A CALIFORNIA WIRE FRAUD AND ELECTRONIC FUNDS ASSOCIATION TRANSFER ADVISORY N 7 OF REALTORS® (C.A.R.Form WFA,Reviewed 6/25) I WIRE FRAUD AND ELECTRONIC FUNDS TRANSFERS ADVISORY: The ability to communicate and conduct business electronically is a convenience and reality in nearly all parts of our lives. At the same time, it has provided hackers and scammers new opportunities for their criminal activity. Many businesses have been victimized and the real estate business is no exception. While wiring or electronically transferring funds is a welcome convenience,we all need to exercise extreme caution. Emails attempting to induce fraudulent wire transfers have been received and have appeared to be legitimate. Reports indicate that some hackers have been able to intercept emailed transfer instructions, obtain account information and, by altering some of the data, redirect the funds to a different account. It also appears that some hackers were able to provide false phone numbers for verifying the wiring or funds transfer instructions. In those cases, the victim called the number provided to confirm the instructions, and then unwittingly authorized a transfer to somewhere or someone other than the intended recipient. ACCORDINGLY, YOU ARE ADVISED: 1. Obtain phone numbers and account numbers only from Escrow Officers, Property Managers, or Housing Providers at the beginning of the transaction. 2. DO NOT EVER WIRE OR ELECTRONICALLY TRANSFER FUNDS PRIOR TO CALLING TO CONFIRM THE TRANSFER INSTRUCTIONS. ONLY USE A PHONE NUMBER YOU WERE PROVIDED PREVIOUSLY. Do not use any different phone number or account number included in any emailed transfer instructions. 3. Orally confirm the transfer instruction is legitimate and confirm the bank routing number, account numbers and other codes before taking steps to transfer the funds. 4. Avoid sending personal information in emails or texts. Provide such information in person or over the telephone directly to the Escrow Officer, Property Manager, or Housing Provider. 5. Take steps to secure the system you are using with your email account. These steps include creating strong passwords, using secure WiFi, and not using free services. If you believe you have received questionable or suspicious wire or funds transfer instructions, immediately notify your bank, and the other party, and the Escrow Office, Housing Provider, or Property Manager. The sources below, as well as others, can also provide information: Federal Bureau of Investigation: https://www.fbi.gov/; the FBI's IC3 at www.ic3.gov; or 310-477-6565 National White Collar Crime Center: http://www.nw3c.org/ On Guard Online: https://www.onguardonline.gov/ NOTE: There are existing alternatives to electronic and wired fund transfers such as cashier's checks. The term "Housing Provider"also includes Landlord or Rental Property Owner. By signing below, Buyer/Tenant and Seller/Housing Provider acknowledge that each has received a copy of this Wire Fraud and Electronic Funds Transfer Advisory, and each has read and understands its terms. Buyer/Tenant Paul ihighea South Tahoe Public Utility District Date 04/29/2026 Buyer/Tenant c—DocuSigned by: Date Dus�� , 4,0 y of P 0t,de o- 04? /./G co Pa D? Ta ctc'-ecVenturesQozb LLCDate 5/5/2026 Seller/Housing Provider —A61 ECAD4258F418... Seller/Housing Provider Date © 2025, California Association of REALTORS®, Inc. United States copyright law (Title 17 U.S. Code) forbids the unauthorized distribution, display and reproduction of this form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATE TRANSACTIONS. IF YOU DESIRE LEGAL OR TAX ADVICE, CONSULT AN APPROPRIATE PROFESSIONAL. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTORS WFA REVIEWED 6/25 (PAGE 1 OF 1) EQUAL HOUSING OPPORTUNITY WIRE FRAUD AND ELECTRONIC FUNDS TRANSFER ADVISORY (WFA PAGE 1 OF 1) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC CALIFORNIA BUYER'S VACANT LAND ADDITIONAL INSPECTION ASSOCIATION ADVISORY _ ' OF REALTORS® (C.A.R. Form BVLIA, Revised 6/23) Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 ("Property"). A. IMPORTANCE OF PROPERTY INVESTIGATION: The physical condition of the land and improvements being purchased is not guaranteed by either Seller or Brokers. For this reason, you should conduct thorough investigations of the Property personally and with professionals who should provide written reports of their investigations. A general physical inspection typically does not cover all aspects of the Property nor items affecting the Property that are not physically located on the Property. If the professionals recommend further investigations, including a recommendation by a pest control operator to inspect inaccessible areas of the Property, you should contact qualified experts to conduct such additional investigations. Additionally, some inspections, such as those listed below, may be of particular importance when purchasing vacant land. B. BUYER RIGHTS AND DUTIES:You have an affirmative duty to exercise reasonable care to protect yourself, including discovery of the legal, practical and technical implications of disclosed facts, and the investigation and verification of information and facts that you know, or that are within your diligent attention and observation. The purchase agreement gives you the right to investigate the Property. If you exercise this right, and you should, you must do so in accordance with the terms of that agreement. This is the best way for you to protect yourself. It is extremely important for you to read all written reports provided by professionals and to discuss the results of inspections with the professional who conducted the inspection. You have the right to request that Seller make repairs, corrections or take other action based upon items discovered in your investigations or disclosed by Seller. If Seller is unwilling or unable to satisfy your requests, or you do not want to purchase the Property in its disclosed and discovered condition, you have the right to cancel the agreement if you act within specific time periods. If you do not perform, and you have not cancelled the agreement in a timely and proper manner, you may be in breach of contract. C. SELLER RIGHTS AND DUTIES: Seller is required to disclose to you known material facts that affect the value or desirability of the Property. However, Seller may not be aware of some Property defects or conditions. Seller does not have an obligation to inspect the Property for your benefit nor is Seller obligated to repair, correct or otherwise cure known defects that are disclosed to you or previously unknown defects that are discovered by you or your inspectors during escrow. The purchase agreement obligates Seller to make the Property available to you for investigations. D. BROKER OBLIGATIONS: Brokers do not have expertise in all areas and therefore cannot advise you on many items, such as soil stability, geologic or environmental conditions, hazardous or illegal controlled substances, structural conditions of the foundation or other improvements, or the condition of the roof, plumbing, heating, air conditioning, electrical, sewer, septic, waste disposal, or other system. The only way to accurately determine the condition of the Property is through an inspection by an appropriate professional selected by you. If Broker gives you referrals to such professionals, Broker does not guarantee their performance. You may select any professional of your choosing. If you have entered into a written agreement with a Broker, the specific terms of that agreement will determine the nature and extent of that Broker's duty to you. YOU ARE STRONGLY ADVISED TO INVESTIGATE THE CONDITION AND SUITABILITY OF ALL ASPECTS OF THE PROPERTY. IF YOU DO NOT DO SO,YOU ARE ACTING AGAINST THE ADVICE OF BROKERS. E. YOU ARE ADVISED TO CONDUCT INVESTIGATIONS OF THE ENTIRE PROPERTY, INCLUDING, BUT NOT LIMITED TO THE FOLLOWING: 1. FINANCE: Financing the purchase of vacant land and especially financing construction loans for the improvement of vacant land can provide particular challenges, including subordination agreements and insurance requirements. Buyer is advised to seek the assistance of reputable lenders in assistance with their decisions regarding financing of the property. 2. CONSTRUCTION COSTS: If Buyer is contemplating building improvements on the property, Buyer is advised that they will have to contact any contractors, service providers, suppliers, architects, utility companies regarding the costs of improvements. Buyer is advised to get written bids from all such persons regarding their decision to develop the property. 3. UTILITIES: Unimproved property may or may not have utilities available to the property. Buyer(s) is advised to obtain information form the public or private utility provider about the availability and cost of providing utilities to the property and whether necessary easements are in place to allow such utilities to the property. 4. ENVIRONMENTAL SURVEY: Unimproved land may have had or may have hazardous materials stored upon or under the land or been used by persons engaged in activities exposing the land to hazardous materials. The land may also be host to protected vegetation or animal life. Buyer(s) is advised to satisfy themselves as what hazards or protected plant or animal life are on the property and what impact they may have on Buyer's future plans for the property by seeking the help of a qualified professional. DS ©2023,California Association of REALTORS®,Inc. INN A BVLIA REVISED 6/23 (PAGE 1 OF 2) Buyer's Initials RI/ I Seller's Initials I EQUAL HOUSING OPPORTUNITY BUYER'S VACANT LAND ADDITIONAL INSPECTION ADVISORY (BVLIA PAGE 1 OF 2) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC Property Address: 936 Tanglewood Dr, South Lake Tahoe, CA 96150 Date: 03/06/2026 5. NATURAL HAZARDS REPORTS: Buyer(s) is advised that while certain disclosures are required by state, federal and local laws, hazard disclosure companies can provide additional disclosures for both natural and man-made hazards or nuisances for a cost. Buyer is advised to seek the advice of a natural hazards reporting company regarding additional reports and disclosures that buyer may wish to obtain. 6. SUBDIVISION OF THE PROPERTY: If Buyer's plans include future subdivision of the property (whether under the Subdivision Map Act of the Subdivided Lands Law)multiple,complex issues regarding city,county,state,and federal laws may be presented. Buyer is strongly advised to seek the advice of California legal counsel familiar with federal, state and local subdivision requirements. Buyer and Seller acknowledge and agree that Broker: (i) Does not decide what price Buyer should pay or Seller should accept; (ii) Does not guarantee the condition of the Property; (iii) Does not guarantee the performance, adequacy or completeness of inspections, services, products or repairs provided or made by Seller or others; (iv) Does not have an obligation to conduct an inspection of common areas or areas off the site of the Property; (v) Shall not be responsible for identifying defects on the Property, in common areas, or offsite unless such defects are visually observable by an inspection of reasonably accessible areas of the Property or are known to Broker; (vi) Shall not be responsible for inspecting public records or permits concerning the title or use of Property; (vii) Shall not be responsible for identifying the location of boundary lines or other items affecting title; (viii) Shall not be responsible for verifying square footage, representations of others or information contained in Investigation reports, Multiple Listing Service, advertisements, flyers or other promotional material; (ix) Shall not be responsible for providing legal or tax advice regarding any aspect of a transaction entered into by Buyer or Seller; and (x) Shall not be responsible for providing other advice or information that exceeds the knowledge, education and experience required to perform real estate licensed activity. Buyer and Seller agree to seek legal, tax, insurance, title and other desired assistance from appropriate professionals. By signing below, Buyer and Seller each acknowledge that they have read, understand,accept and have received a Copy o iscd dmisery. Buyer is encouraged to read it carefully. Dusk:, ,o, of P�t,d�„v o4' //z CO po ate? ...a a SELLER �" Tech Ventures Qozb LLC Date 5/5/2026 Afi IECAD4258F418... SELLER Date BUYER Put,//u9hea South Tahoe Public Utility District Date 04/29/2026 BUYER Date © 2023, California Association of REALTORS®, Inc. United States copyright law (Title 17 U.S. Code) forbids the unauthorized distribution, display and reproduction of this form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATE TRANSACTIONS. IF YOU DESIRE LEGAL OR TAX ADVICE, CONSULT AN APPROPRIATE PROFESSIONAL. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. It is not intended to identify the user as a REALTOR®. REALTOR®is a registered collective membership mark which may be used only by members of the NATIONAL ASSOCIATION OF REALTORS®who subscribe to its Code of Ethics. APublished and Distributed by: REAL ESTATE BUSINESS SERVICES,LLC. A a subsidiary of the California Association of REALTORS' .525 South Virgil Avenue,Los Angeles,California 90020 BVLIA REVISED 6/23 (PAGE 2 OF 2) EQUAL HOUSING OPPORTUNITY BUYER'S VACANT LAND ADDITIONAL INSPECTION ADVISORY (BVLIA PAGE 2 OF 2) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID:8EE25B43-E7CA-8EB7-8052-D12CEB7703CC CALIFORNIA CALIFORNIA CONSUMER PRIVACY ACT ADVISORY, ASSOCIATION DISCLOSURE AND NOTICE SI , OF REALTORS® (C.A.R.Form CCPA, Revised 12/22) ir The California Consumer Privacy Act (commencing with Civil Code§ 1798.100) ("CCPA"), as amended by California voters in 2020, grants to California residents certain rights in their private, personal information ("PI")that is collected by companies with whom they do business. Under the CCPA, PI is defined broadly to encompass non-public records information that could reasonably be linked directly or indirectly to you. PI could potentially include photographs of,or sales information about,your property. During the process of buying and selling real estate your PI will be collected and likely shared with others, including real estate licensees, a Multiple Listing Service, real estate internet websites, service providers, lenders, and title and escrow companies,to name several possibilities. Businesses that are covered by the CCPA are required to grant you various rights in your PI, including the right to know what PI is collected, the right to know what PI is sold or shared and to whom, the right to request that the business correct or delete your PI, the right to "opt out" or stop the transfer of your PI to others, and the right to limit the use of certain PI which is considered "sensitive." You may get one or more notices regarding your CCPA rights from businesses you interact with in a real estate transaction. However, not all businesses that receive or share your PI are obligated to comply with the CCPA. Moreover, businesses that are otherwise covered under the CCPA may have a legal obligation to maintain PI, notwithstanding your instruction to the contrary. For instance, regardless of whether they are covered by CCPA, under California law, brokers and Multiple Listing Services are required to maintain their records for 3 years. If you wish to exercise your rights under CCPA,where applicable,you should contact the respective business directly. You can obtain more information about the CCPA and your rights under the law from the State of California Department of Justice (oag.ca.gov/privacy/ccpa). Additionally, the California Privacy Protection Agency is authorized to promulgate regulations which may further clarify requirements of the CCPA(cppa.ca.gov/regulations/). I/we acknowledge receipt of a copy of this California Consumer Privacy Act Advisory, Disclosure and Notice. Buyer/Seller/Landlord/Tenant 7iez South Tahoe Public Utility District Date04/29/2026 a9..sv7:, ,,e,,o, of Po,de o- oc //C co po Ar ast to 4i 1®, as President of LLc��ff8�ate manager Buyer/Seller/Landlord/Tenant , Date A61ECAB425SF418... © 2022, California Association of REALTORS®, Inc. United States copyright law (Title 17 U.S. Code) forbids the unauthorized distribution, display and reproduction of this form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATE TRANSACTIONS. IF YOU DESIRE LEGAL OR TAX ADVICE, CONSULT AN APPROPRIATE PROFESSIONAL.This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. It is not intended to identify the user as a REALTOR®. REALTOR®is a registered collective membership mark which may be used only by members of the NATIONAL ASSOCIATION OF REALTORS®who subscribe to its Code of Ethics. ,, Published and Distributed by: REAL ESTATE BUSINESS SERVICES,LLC. aIIa subsidiary of thONIAASSOCTNOFREALTORS® A 525 South Virgil eCALIFAvenue,LosR Angeles,CaliforniaIAIO 90020 CCPA REVISED 12/22 (PAGE 1 OF 1) EQUAL HOUSING OPPORTUNITY CALIFORNIA CONSUMER PRIVACY ACT ADVISORY (CCPA PAGE 1 OF 1) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID: 1D4952B9-48B3-8C29-825C-D6E366089B24 5 A *CALIFORNIA SELLER COUNTER OFFER No. 2 ilk i� ASsocLATION ORS Maynot be used as a multiple counter offer. � OF RE ALTORS� p I' (C.A.R.Form SCO, Revised 12/25) Date 05/13/2026 This is a counter offer to the Purchase Agreement,OR X Buyer Counter Offer No. 1 ,_Other ("Offer"), dated 05/12/2026,on property known as 936 Tanglewood Dr, South Lake Tahoe, ("Property"), between South Lake Tahoe Public Utility District ("Buyer") and Tech Ventures QOZB LLC ("Seller"). Buyer and Seller are referred to as the"Parties." 1. TERMS: The terms and conditions of the above referenced document are accepted subject to the following: A. The Liquidated Damages and Arbitration of Disputes paragraphs in the Offer each require initials by all Parties. If either of those paragraphs is not initialed by all Parties, that paragraph is excluded from the final agreement unless specifically referenced for inclusion in paragraph 1 D below or in another Counter Offer or addendum. B. Unless Otherwise Agreed or altered in another Counter Offer, the down payment and loan amount(s) will be adjusted in the same proportion as in the original Offer, but the dollar amount of any initial and increased deposit and Seller credits shall remain unchanged from the original Offer. C. Unless Otherwise Agreed or altered in another Counter Offer, if, in the original offer,the appraisal contingency amount is lower than the original offered price (e.g., the optional box is checked in the third column in paragraph 3L(2) of the RPA), then the dollar amount of any difference ("Appraisal Gap") shall remain unchanged and shall be deducted from the final contract price to create the final appraisal contingency amount. (For example, if the purchase price in the offer is $1,000,000, and Buyer reduces the appraisal contingency value to $950,000, the "Appraisal Gap" is $50,000. If the purchase price is increased to $1,200,000 as a result of this counter offer, the appraisal contingency value shall be adjusted to $1,150,000 ($1,200,000 less$50,000). If the property appraises below$1,150,000, Buyer may exercise Buyer's appraisal contingency right to cancel this Agreement.) D. OTHER TERMS: Purchase Price to be$425,000 Best&Final. E. The following attached documents are incorporated into this Seller Counter Offer when Signed and Delivered by both Parties (and if both parties do not Sign and Deliver all attached addenda,then any acceptance of this Seller Counter Offer is not valid): Addendum No. (C.A.R. Form ADM) Back Up Offer Addendum (C.A.R. Form BUO) Seller License to Remain in Possession Addendum (C.A.R. Form SIP)(occupancy up to 29 days) Seller Purchase of Replacement Property(C.A.R. Form SPRP) Tenant Occupied Property Addendum (C.A.R. Form TOPA) Residential Lease After Sale(C.A.R. Form RLAS)(occupancy for 30 or more days) Seller Intent to Exchange Addendum (C.A.R. Form SXA) _ Other Other 2. EXPIRATION: This Seller Counter Offer shall be deemed revoked and the deposits, if any, shall be returned: A. Unless by 5:00 PM on the third Day after the date this Seller Counter Offer is Signed in paragraph 4(if more than one signature, then the last signature date)(or by 5 AM/ X PM on 05/18/2026 (date)) (i) it is Signed in paragraph 5 by Buyer and (ii)a Copy of the Signed Seller Counter Offer is Delivered to Seller or Seller's Authorized Agent. B. OR If Seller withdraws this Seller Counter Offer anytime prior to Buyer's Acceptance by communicating withdrawal to Buyer or Buyer's Agent(C.A.R. Form WOO may be used). C. OR If Seller accepts another offer prior to Buyer's Acceptance of this Seller Counter Offer. 3. MARKETING TO OTHER BUYERS: Seller has the right to continue to offer the Property for sale. Seller has the right to accept any other offer received, prior to Acceptance of this Counter Offer by Buyer as specified in 2A and 5. In such event, Seller is advised to withdraw this Seller Counter Offer before accepting another offer. 4. OFFER: SELLER MAKES THIS COUNTER OFFER ON THE TERMS ABOVE AND ACKNOWLEDGES RECEIPT OF A COPY. BY MAKING THIS COUNTER OFFER, ANY PREVIOUS OFFER OR COUNTER OFFER CAN NO LONGER BE ACCEPTED. THIS COUNTER OFFER IS VALID REGARDLESS OF WHETHER ANY PREVIOUS OFFER OR COUNTER OFFER EXPIRED BY ITS TERMS.The terms and conditions of those documents are incorporated into this Seller Counter Offer unless Otherwise Agreed. Signed by: 5/13/2026 Seller OltiSllLtn, riiiJb, PV't-Situ l or cbvpbrra{t.- wia.tna,w' for tt-G4e1/4/04 ►P4, 4c to Seller —A61ECAD4258F418 Date SCO Revised 12/25(PAGE 1 OF 2) A SELLER COUNTER OFFER(SCO PAGE 1 OF 2) """RTu"" The Oppenheim Group,Inc.,7925 Girard Ave La Jolla CA 92037 Phone:8583149600 Fax: 936 Tanglewood Radley Raven Produced with Lone Wolf Transactions(zipForm Edition)717 N Harwood St,Suite 2200,Dallas,TX 75201 www.lwolf.com Docusign Envelope ID: 1D4952B9-48B3-8C29-825C-D6E366089B24 5 5. ACCEPTANCE: I/WE accept the above Seller Counter Offer(If checked _SUBJECT TO THE ATTACHED BUYER COUNTER OFFER No. )and acknowledge receipt of a Copy. Buyer Paul,//uq#lzes South Lake Tahoe Public Utility District Date 05/22/2026 Buyer Date 6. LATE ACCEPTANCE: If the date of Buyer's signature in paragraph 5 is after the expiration specified in paragraph 2A, Buyer's acceptance is only binding if Seller agrees to the late acceptance by signing below and Delivering a Copy before 5:00 PM on the third Day after the date this Seller Counter Offer is Signed in paragraph 5. All time periods in the Agreement shall begin upon the Delivery of this Late Acceptance. I/We(Slie°r9,uPhl �� he acceptance and agree to all terms of this Seller Counter Offer. Dusk 14/CV as P et,Ie occ LLC co Po acre 5/23/2026 Seller �As+ErA��S Fa1a.. Tech Ventures QOZB LLC Date Seller Date ©2025, California Association of REALTORS®, Inc. United States copyright law (Title 17 U.S. Code) forbids the unauthorized distribution, display and reproduction of this form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATE TRANSACTIONS. IF YOU DESIRE LEGAL OR TAX ADVICE, CONSULT AN APPROPRIATE PROFESSIONAL.This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTORS® A SCO Revised 12/25(PAGE 2 OF 2) SELLER COUNTER OFFER(SCO PAGE 2 OF 2) Produced with Lone Wolf Transactions(zipForm Edition)717 N Harwood St,Suite 2200,Dallas,TX 75201 www.lwolf.com 936 Tanglewood DigiSign Verified - 0c9288bd-3b72-4774-b005-282c9eae0dff CALIFORNIA BUYER COUNTER OFFER No. one ASSOCIATION (C.A.R. Form BCO, Revised 12/25) I7 OF REALTORS® Date 05/12/2026 This is a counter offer to the Seller Counter Offer No. 1 , OR 0 Seller Multiple Counter Offer No. , 0 Other ("Offer"), dated , on property known as 936 Tanglewood Dr, South Lake Tahoe, CA 96150 ("Property"), between South Tahoe Public Utility District ("Buyer") and Tech Ventures Qozb LLC ("Seller"). Buyer and Seller are referred to as the"Parties." 1. TERMS:The terms and conditions of the above referenced document are accepted subject to the following: A. The Liquidated Damages and Arbitration of Disputes paragraphs in the Offer each require initials by all Parties. If either of those paragraphs is not initialed by all Parties, that paragraph is excluded from the final Agreement unless specifically referenced for inclusion in paragraph 1 D below or in another Counter Offer or addendum. B. Unless Otherwise Agreed or altered in another Counter Offer, the down payment and loan amount(s) will be adjusted in the same proportion as in the original Offer, but the dollar amount of any initial and increased deposit and Seller credits shall remain unchanged from the original Offer. C. Unless Otherwise Agreed or altered in another Counter Offer, if, in the original offer,the appraisal contingency amount is lower than the original offered price (e.g., the optional box is checked in the third column in paragraph 3L(2) of the RPA), then the dollar amount of any difference("Appraisal Gap")shall remain unchanged and shall be deducted from the final contract price to create the final appraisal contingency amount. (For example, if the purchase price in the offer is$1,000,000,and Buyer reduces the appraisal contingency value to$950,000, the"Appraisal Gap" is$50,000. If the purchase price is increased to$1,200,000 as a result of this Counter Offer,the appraisal contingency value shall be adjusted to$1,150,000($1,200,000 less$50,000). If the property appraises below$1,150,000, Buyer may exercise Buyer's appraisal contingency right to cancel this Agreement.) D. OTHER TERMS: Purchase price to be $375,000 (three hundred seventy five thousand) . E. The following attached addenda are incorporated into this Buyer Counter Offer only when Signed by both Parties (and if both Parties do not Sign and Deliver all attached addenda,then any acceptance of this Buyer Counter Offer is not valid): ❑ Addendum No. ❑ ❑ 2. EXPIRATION:This Buyer Counter Offer shall be deemed revoked, and the deposits, if any,shall be returned: A. Unless by 5:00 PM on the third Day after the date this Buyer Counter Offer is signed in paragraph 3(if more than one signature, then the last signature date)(or❑ by ❑AM/0 PM on (date))(i)it is Signed in paragraph 4 by Seller and (ii)a Copy of the Signed Buyer Counter Offer is Delivered to Buyer or Buyer's Authorized Agent B. OR If Buyer withdraws this Buyer Counter Offer any time prior to Seller's Acceptance by communicating withdrawal to Seller or Seller's Agent(C.A.R. Form WOO may be used). 3. OFFER:BUYER MAKES THIS COUNTER OFFER ON THE TERMS ABOVE AND ACKNOWLEDGES RECEIPT OF A COPY. BY MAKING THIS COUNTER OFFER,ANY PREVIOUS OFFER OR COUNTER OFFER CAN NO LONGER BE ACCEPTED. THIS COUNTER OFFER IS VALID REGARDLESS OF WHETHER ANY PREVIOUS OFFER OR COUNTER OFFER EXPIRED BY ITS TERMS. The terms and conditions of those documents are incorporated into this Buyer Counter Offer unless Otherwise Agreed. Paid Buyer • ✓AfirAea South Tahoe Public Utility District Date 05/12/2026 Buyer Date 4. ACCEPTANCE: I/WE accept the above Buyer Counter Offer and all Signed Addenda, if any, (If checked Xl SUBJECT TO THE ATTACHED SELLER COUNTER OFFER No. 2 OR SELLER MULTIPLE COUNTER OFFER No. ),and acknowledge receipt of a Copy. Seller Tech Ventures Qozb LLC Date Seller Date 5. LATE ACCEPTANCE: If the date of Seller's signature in paragraph 4 is after the expiration specified in paragraph 2A, Seller's acceptance is only binding if Buyer agrees to the late acceptance by signing below and Delivering a Copy before 5:00 PM on the third Day after the date this Buyer Counter Offer is signed in paragraph 4. All time periods in the Agreement shall begin upon the Delivery of this Late Acceptance. I/We(Buyer), ratify the acceptance and agree to all terms of this Buyer Counter Offer. Buyer Date Buyer Date © 2025, California Association of REALTORS®, Inc. United States copyright law (Title 17 U.S. Code) forbids the unauthorized distribution, display and reproduction of this form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATE TRANSACTIONS. IF YOU DESIRE LEGAL OR TAX ADVICE, CONSULT AN APPROPRIATE PROFESSIONAL. This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTOR® BCO REVISED 12/25 (PAGE 1 OF 1) EQUAL HOUSING OPPORTUNITY BUYER COUNTER OFFER (BCO PAGE 1 OF 1) Created by Bret Howard with SkySlope® Forms Docusign Envelope ID: 1D4952B9-48B3-8C29-825C-D6E366089B24 5f A *CALIFORNIA SELLER COUNTER OFFER No. / ilk i� AssocIATIoN Maynot be used as a multiple counter offer. � OF RE ALTORS� p I' (C.A.R.Form SCO, Revised 12/25) Date 05/05/2026 This is a counter offer to the Purchase Agreement,OR Buyer Counter Offer No. _Other ("Offer"), dated 03/06/2026,on property known as 936 Tanglewood Dr, South Lake Tahoe, ("Property"), between South Lake Tahoe Public Utility District ("Buyer") and Tech Ventures QOZB LLC ("Seller"). Buyer and Seller are referred to as the"Parties." 1. TERMS: The terms and conditions of the above referenced document are accepted subject to the following: A. The Liquidated Damages and Arbitration of Disputes paragraphs in the Offer each require initials by all Parties. If either of those paragraphs is not initialed by all Parties, that paragraph is excluded from the final agreement unless specifically referenced for inclusion in paragraph 1 D below or in another Counter Offer or addendum. B. Unless Otherwise Agreed or altered in another Counter Offer, the down payment and loan amount(s) will be adjusted in the same proportion as in the original Offer, but the dollar amount of any initial and increased deposit and Seller credits shall remain unchanged from the original Offer. C. Unless Otherwise Agreed or altered in another Counter Offer, if, in the original offer, the appraisal contingency amount is lower than the original offered price (e.g., the optional box is checked in the third column in paragraph 3L(2) of the RPA), then the dollar amount of any difference ("Appraisal Gap") shall remain unchanged and shall be deducted from the final contract price to create the final appraisal contingency amount. (For example, if the purchase price in the offer is$1,000,000, and Buyer reduces the appraisal contingency value to $950,000, the "Appraisal Gap" is $50,000. If the purchase price is increased to $1,200,000 as a result of this counter offer, the appraisal contingency value shall be adjusted to $1,150,000 ($1,200,000 less$50,000). If the property appraises below$1,150,000, Buyer may exercise Buyer's appraisal contingency right to cancel this Agreement.) D. OTHER TERMS: i.)Purchase Price to be$425,000 Best&Final. ii.) This sale does not include the two(2)Potential Residential Unit of Use("PRUU's")associated with this Property. Seller shall,at Seller's expense, file the necessary TRPA applications to formally transfer these PRUU's to parcel(s) designated by the Seller.Buyer agrees to cooperate and execute any formal documents required to complete this process. This sale and Close of Escrow are subject to the completion and official transfer of said PRUU"s. E. The following attached documents are incorporated into this Seller Counter Offer when Signed and Delivered by both Parties (and if both parties do not Sign and Deliver all attached addenda,then any acceptance of this Seller Counter Offer is not valid): Addendum No. (C.A.R. Form ADM) Back Up Offer Addendum (C.A.R. Form BUO) Seller License to Remain in Possession Addendum (C.A.R. Form SIP)(occupancy up to 29 days) Seller Purchase of Replacement Property(C.A.R. Form SPRP) Tenant Occupied Property Addendum (C.A.R. Form TOPA) Residential Lease After Sale(C.A.R. Form RLAS)(occupancy for 30 or more days) Seller Intent to Exchange Addendum (C.A.R. Form SXA) _ Other Other 2. EXPIRATION: This Seller Counter Offer shall be deemed revoked and the deposits, if any, shall be returned: A. Unless by 5:00 PM on the third Day after the date this Seller Counter Offer is Signed in paragraph 4(if more than one signature, then the last signature date)(or by AM/ PM on (date)) (i) it is Signed in paragraph 5 by Buyer and (ii)a Copy of the Signed Seller Counter Offer is Delivered to Seller or Seller's Authorized Agent. B. OR If Seller withdraws this Seller Counter Offer anytime prior to Buyer's Acceptance by communicating withdrawal to Buyer or Buyer's Agent(C.A.R. Form WOO may be used). C. OR If Seller accepts another offer prior to Buyer's Acceptance of this Seller Counter Offer. 3. MARKETING TO OTHER BUYERS: Seller has the right to continue to offer the Property for sale. Seller has the right to accept any other offer received, prior to Acceptance of this Counter Offer by Buyer as specified in 2A and 5. In such event, Seller is advised to withdraw this Seller Counter Offer before accepting another offer. 4. OFFER: SELLER MAKES THIS COUNTER OFFER ON THE TERMS ABOVE AND ACKNOWLEDGES RECEIPT OF A COPY. BY MAKING THIS COUNTER OFFER, ANY PREVIOUS OFFER OR COUNTER OFFER CAN NO LONGER BE ACCEPTED. THIS COUNTER OFFER IS VALID REGARDLESS OF WHETHER ANY PREVIOUS OFFER OR COUNTER OFFER EXPIRED BY ITS TERMS.The terms and conditions of those documents are incorporated into this Seller Counter Offer unless Otherwise Agreed. f--DocuSigned by: �� 5/5/2026 Seller D�s�:„ 1' /o) of Pet,,, 04' //C Co Po a . „ate.. Tech Ventures QOZB LLC Date Seller -A61ECAD4258F418 Date SCO Revised 12/25(PAGE 1 OF 2) A SELLER COUNTER OFFER(SCO PAGE 1 OF 2) OPPORTUNITY The Oppenheim Group,Inc.,7925 Girard Ave La Jolla CA 92037 Phone:8583149600 Fax: 936 Tanglewood Radley Raven Produced with Lone Wolf Transactions(zipForm Edition)717 N Harwood St,Suite 2200,Dallas,TX 75201 www.lwolf.com Docusign Envelope ID: 1D4952B9-48B3-8C29-825C-D6E366089B24 5f 5. ACCEPTANCE: I/WE accept the above Seller Counter Offer(If checked SUBJECT TO THE ATTACHED BUYER COUNTER OFFER Noofe)and acknowledge receipt of a Copy. Buyer PaculJ/119hes South Lake Tahoe Public Utility District Date 05/12/2026 Buyer Date 6. LATE ACCEPTANCE: If the date of Buyer's signature in paragraph 5 is after the expiration specified in paragraph 2A, Buyer's acceptance is only binding if Seller agrees to the late acceptance by signing below and Delivering a Copy before 5:00 PM on the third Day after the date this Seller Counter Offer is Signed in paragraph 5. All time periods in the Agreement shall begin upon the Delivery of this Late Acceptance. I/We(Seller), ratify the acceptance and agree to all terms of this Seller Counter Offer. Seller Tech Ventures QOZB LLC Date Seller Date ©2025, California Association of REALTORS®, Inc. United States copyright law (Title 17 U.S. Code) forbids the unauthorized distribution, display and reproduction of this form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats. THIS FORM HAS BEEN APPROVED BY THE CALIFORNIA ASSOCIATION OF REALTORS®.NO REPRESENTATION IS MADE AS TO THE LEGAL VALIDITY OR ACCURACY OF ANY PROVISION IN ANY SPECIFIC TRANSACTION.A REAL ESTATE BROKER IS THE PERSON QUALIFIED TO ADVISE ON REAL ESTATE TRANSACTIONS. IF YOU DESIRE LEGAL OR TAX ADVICE, CONSULT AN APPROPRIATE PROFESSIONAL.This form is made available to real estate professionals through an agreement with or purchase from the California Association of REALTORS®. Published and Distributed by:REAL ESTATE BUSINESS SERVICES,LLC.a subsidiary of the California Association of REALTORS() A SCO Revised 12/25(PAGE 2 OF 2) SELLER COUNTER OFFER(SCO PAGE 2 OF 2) Produced with Lone Wolf Transactions(zipForm Edition)717 N Harwood St,Suite 2200,Dallas,TX 75201 www.lwolf.com 936 Tanglewood General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6e TO: Board of Directors FROM: Mark Seelos, Water Resources Manager MEETING DATE: June 18, 2026 ITEM - PROJECT NAME: Sunset and Tanglewood Well Drilling Project REQUESTED BOARD ACTION: (1) Find minor irregularities in the bid from Zim Industries to be immaterial, and waive minor irregularities; and (2) Award the Project to the lowest responsive, responsible bidder, Zim Industries, in the amount of $2,268,900. DISCUSSION: On May 7, 2026 the Board authorized staff to advertise for construction bids for the Sunset and Tanglewood Well Drilling Project (Project). The Scope of Work is as follows: 1) Drilling, installation, and testing of Sunset Replacement Well 2) Destruction of Tanglewood Test Well; 3) Drilling, installation, and testing of Tanglewood Well The Project was advertised on PlanetBids on May 7, 2026. A mandatory pre-bid conference was held on May 27, 2026 with six prime contractors in attendance. Bids were opened on June 8, 2026 at 2:00 p.m. (PDT). Three bids were received, ranging from $2.269 million to $2.926 million. The Engineer's Estimate for the construction of the Project was $1 .8 million. The low bid reflects current market conditions, including increased costs for stainless steel, labor, and materials. A summary of the bid, along with staff findings, is attached. Zim Industry's bid contained four minor contractual irregularities; however, the relevant information was verified and confirmed to meet the District's requirements. Drilling and well construction is anticipated to start in July 2026. Mark Seelos June 18, 2026 Page 2 SCHEDULE: Upon Board Approval COSTS: $2,268,900 ACCOUNT NO: 20.30.8681/SSWRBD: $1,145,450; 20.30.7006/TNGLWD: $1,123,450 BUDGETED AMOUNT AVAILABLE: $3,167,656 (Fiscal Year 2026 available budget and additional budget allocated in Fiscal Year 2027); Fiscal Year 2026 available budgets - 20.30.8681/SSWRBD: $371,655; 20.30.7006/TNGLWD: ($3,999). IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): Yes D No ❑ N/A ATTACHMENTS: Bid Summary CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Water GENERAL MANAGER: YES / r NO CHIEF FINANCIAL OFFICER: YES NO South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 Telephone: (530)544-6474 Fax: (530)541-4319 Memorandum Date: June 11, 2026 To: Board Members, Paul Hughes From: Starlet Glaze, Contracts Specialist Subject: Sunset and Tanglewood Well Project At 2:00 PM on Monday, June 8, 2026, three (3) electronic bids were received via PlanetBids for the above-referenced project. The bids submitted ranged from $2,268,900.00 to $2,925,602.00. The Engineer's Estimate for this project was $1,800,000.00. One bidder was determined to be non- responsive for failure to submit the required original Bid Bond prior to the bid opening. A careful review and analysis of the two responsive bids received identified only minor deviations. See the attached Bid Summary and List of Deviations for a complete breakdown of each bid. Zim Industries, Inc. is the apparent low bidder. I contacted the Contractors State License Board and confirmed the following: • License Number: 440537 • Status: Current and Active • Expiration Date: June 30, 2027 • Entity Type: Corporation • License Classification: Class A— General Engineering; Class C-61/D21 — Machinery and Pumps; Class C-57 — Well Drilling Additionally, I verified with the California Department of Industrial Relations that Zim Industries, Inc. is properly registered under PWCR Number 1000003978. South Tahoe Public Utility District• 1275 Meadow Crest Drive, South Lake Tahoe, CA 96150 Phone 530.544.6474• Facsimile 530.541.0614 Sunset and Tanglewood Well Project Advert i esed:05/07/2026 Bid Opening:June 08,2026 2:00 PM(PDT) Unit of Zim Industries, South Valley Gregg Drilling, Engineer's Item Description Measure Quantity Inc. Companies Inc. LLC Estimate Bid Schedule A:Sunset Well Site 1 Mobilization and demobilization including bonds,insurance,permits,submittals,and cleanup LS 1 $190,000.00 $120,000.00 $144,764.00 $45,000.00 2 Site preparation including grubbing,BMP installation and maintenance,and stockpile management LS 1 $18,000.00 $50,000.00 $11,708.00 $10,000.00 3 Noise control barrier wall design,installation,and maintenance(engineer stamped) LS 1 $105,000.00 $150,000.00 $158,055.00 $120,000.00 4 Pumped groundwater management system including tanks,filtration unit,piping,and appurtenances LS 1 $35,000.00 $80,000.00 $64,393.00 $75,000.00 5 40-inch conductor casing and 10.3 sack cement sanitary seal installation to 55 ft LS 1 $60,000.00 $60,000.00 $52,685.00 $55,000.00 6 Reverse-rotary pilot borehole drilling. LF 500 $75,000.00 $162,500.00 $198,000.00 $200,000.00 7 Geophysical logging and analysis(resistivity,gamma,SP,etc.) LS 1 $20,000.00 $10,000.00 $8,781.00 $7,500.00 8 Temporary sand backfill to stabilize borehole LF 445 $8,900.00 $31,150.00 $36,045.00 $22,250.00 9 Well installation materials including casing,screen,gravel pack,and accessories LF 500 $380,000.00 $300,000.00 $303,500.00 $100,000.00 10 Reaming pilot borehole to final design diameter and depth LF 500 $75,000.00 $150,000.00 $197,500.00 $25,000.00 11 Caliper survey and analysis LS 1 $4,500.00 $10,000.00 $5,620.00 $5,000.00 12 Production well installation per hydrogeologist design LF 500 $10,000.00 $37,500.00 $91,500.00 $75,000.00 13 Transition sand and annular cement seal installation LF 205 $18,450.00 $20,500.00 $24,395.00 $20,500.00 14 Mechanical and chemical well development HR 48 $26,400.00 $24,000.00 $34,128.00 $24,000.00 15 Test pump and discharge system installation LS 1 $48,000.00 $70,000.00 $57,602.00 $9,750.00 16 Pumping and overpumping well development HR 48 $21,600.00 $24,000.00 $32,016.00 $24,000.00 17 Pumping tests including step drawdown,constant rate,recovery,and sampling LS 1 $33,600.00 $25,000.00 $25,757.00 $25,000.00 18 Gyroscopic plumbness and alignment survey of completed well LS 1 $6,000.00 $10,000.00 $14,635.00 $5,000.00 19 Downhole video survey of completed well LS 1 $3,000.00 $10,000.00 $3,278.00 $1,000.00 20 Final disinfection and welded cap installation LS 1 $7,000.00 $10,000.00 $3,278.00 $1,000.00 21 Standby time when directed by Engineer or Hydrogeologist HR 0 $0.00 $0.00 $0.00 $0.00 Subtotal $1,145,450.00 $1,354,650.00 $1,467,640.00 $850,000.00 Bid Schedule B:Tangelwood Well Site 22 Mobilization and demobilization including bonds,insurance,permits,submittals,and cleanup LS 1 $145,000.00 $120,000.00 $133,628.00 $25,000.00 23 Site preparation including grubbing,BMP installation and maintenance,and stockpile management LS 1 $18,000.00 $50,000.00 $11,708.00 $5,000.00 24 Destruction of existing Tanglewood test well per California standards LS 1 $48,000.00 $50,000.00 $35,123.00 $75,000.00 25 Noise control barrier wall design,installation,and maintenance(engineer stamped) LS 1 $105,000.00 $150,000.00 $142,748.00 $120,000.00 26 Pumped groundwater management system including tanks,filtration unit,piping,and appurtenances LS 1 $35,000.00 $100,000.00 $64,393.00 $125,000.00 27 40-inch conductor casing and 10.3 sack cement sanitary seal installation to 55 ft LS 1 $60,000.00 $60,000.00 $52,685.00 $55,000.00 28 Reverse-rotary pilot borehole drilling. LF 500 $75,000.00 $162,500.00 $198,000.00 $200,000.00 29 Geophysical logging and analysis(resistivity,gamma,SP,etc.) LS 1 $20,000.00 $10,000.00 $7,610.00 $7,500.00 30 Temporary sand backfill to stabilize borehole LF 445 $8,900.00 $31,150.00 $35,155.00 $22,250.00 31 Well installation materials including casing,screen,gravel pack,and accessories LF 500 $360,000.00 $300,000.00 $290,000.00 $100,000.00 32 Reaming pilot borehole to final design diameter and depth LF 500 $70,000.00 $150,000.00 $182,500.00 $25,000.00 33 Caliper survey and analysis LS 1 $4,500.00 $10,000.00 $13,230.00 $5,000.00 34 Production well installation per hydrogeologist design LF 500 $10,000.00 $50,000.00 $91,500.00 $75,000.00 35 Transition sand and annular cement seal installation LF 205 $18,450.00 $20,500.00 $24,395.00 $20,500.00 Page 1 36 Mechanical and chemical well development HR 48 $26,400.00 $24,000.00 $34,176.00 $24,000.00 37 Test pump and discharge system installation LS 1 $48,000.00 $80,000.00 $57,602.00 $9,750.00 38 Pumping and overpumping well development HR 48 $21,600.00 $24,000.00 $32,112.00 $24,000.00 39 Pumping tests including step drawdown,constant rate,recovery,and sampling LS 1 $33,600.00 $20,000.00 $25,757.00 $25,000.00 40 Gyroscopic plumbness and alignment survey of completed well LS 1 $6,000.00 $10,000.00 $14,635.00 $5,000.00 41 Downhole video survey of completed well LS 1 $3,000.00 $10,000.00 $3,278.00 $1,000.00 42 Final disinfection and welded cap installation LS 1 $7,000.00 $10,000.00 $7,727.00 $1,000.00 43 Standby time when directed by Engineer or Hydrogeologist HR 0 $0.00 $0.00 $0.00 $0.00 Subtotal $1,123,450.00 $1,442,150.00 $1,457,962.00 $950,000.00 Total $2,268,900.00 $2,796,800.00 $2,925,602.00 $1,800,000.00 Page 2 SUNSET AND TANGLEWOOD WELL PROJECT CONTRACTOR'S SUBCONTRACTORS Zim Industries, Inc. Description of Work Subcontractors Name &Address Drill Conductor Borehole 0.6% Hagg Drilling Specialty Const., Inc. 19632 Brimhall Road Bakersfield, CA 93314 CA#829276; CA DIR(PWC)#1000021704 Geophysical Surveys, Caliper, Video & Gyro Pacific Surveys, LLC 1.7% 4456 Via Saint Ambrose Claremont, CA 91711 CA# N/A Service Provider; CA DIR(PWC)#1000014306 Tree Removal <0.5% Sierra Crest Tree Service 725 James Ave. South Lake Tahoe, CA 96150 CA#1108901; CA DIR(PWC)#2000009724 Named Equipment/Material Supplier List: Equipment/ Material Supplier/ Manufacturer Well Casing and Screen Roscoe Moss Filter Pack PW Gillibrand Conductor Casing Roscoe Moss Filter Feed Tube Independent Pipe Drilling Fluid Additives Baroid Development Chemicals Baroid Noise Control Barrier Walls Zim Groundwater Discharge System Zim South Valley Companies, Inc. Description of Work Subcontractors Name &Address Conductor, hauling, sound walls 15% 5 C Holdings Inc. CA#938158; CA DIR(PWC)#1000028859 Surveys 1% Pacific Surveys, LLC CA# No CSLB Service Provider; CA DIR (PWC)#1000014306 Named Equipment/Material Supplier List: Equipment/ Material Supplier/ Manufacturer Well Casing and Screen Roscoe Moss/ Roscoe Moss Filter Pack PW Gillabrand / PW Gillabrand Conductor Casing Roscoe Moss/ Roscoe Moss Filter Feed Tube Roscoe Moss/ Roscoe Moss Drilling Fluid Additives Preferred Pump/ Baroid Development Chemicals Preferred Pump/ Baroid -Johnson 1 SUNSET AND TANGLEWOOD WELL PROJECT CONTRACTOR'S SUBCONTRACTORS Noise Control Barrier Walls Behreens/ Behreens Groundwater Discharge System Ironclad / Rexroth Irrigation / Rain for Rent Same Gregg Drilling, LLC Description of Work Subcontractors Name &Address Noise Mitigation 8.4% Behrens and Associates 66 Franklin St. Suite 324 Oakland, CA 94607 CA#1120955; CA DIR(PWC)#100018695 Waste Handling 11% Costera Waste and Environmental 1517 North Point St., #527 San Francisco, CA 94123 CA#1068264; CA DIR (PWC)#PW-LR-100067944 Install conductor casing 1.8% SDI Services 1143 Blumenfeld Drive, Suite 100 Sacramento, CA 95815 CA#476668; CA DIR (PWC)#1000002722 Geophysical logging 1.2% Pacific Surveys 1785 West Arrow Route, Building D Suites 3&4 Upland, CA 91786 CA# Not a contractor; CA DIR (PWC)#1000014306 Well Development and Pump Testing /Well Eaton Pumps Sales and Service Destruction 11% 10 West Kentucky Ave Woodland, CA 95695 CA#133783; CA DIR (PWC)#1000035631 Named Equipment/Material Supplier List: Equipment 1 Material Supplier/ Manufacturer Well Casing and Screen Roscoe Moss/ Roscoe Moss Filter Pack Gillibrand I Gillibrand Conductor Casing Roscoe Moss/ Roscoe Moss Filter Feed Tube Roscoe Moss/ Roscoe Moss Drilling Fluid Additives Baroid / Baroid Development Chemicals Baroid / Baroid Noise Control Barrier Walls Behrens/ Behrens Groundwater Discharge System Rain for Rent/ Rain for Rent 2 SUNSET AND TANGLEWOOD WELL PROJECT Bid Opening: Monday, June 8, 2026, at 2:00 p.m. Three bids were received for this project and are reflected in the Bid Summary. Upon review, the second-lowest bidder was determined to be non-responsive for failure to submit the required original Bid Bond prior to the bid opening. Staff then conducted a detailed review of the two responsive bids. Several minor irregularities and informational items were identified and verified by staff and were determined not to affect the responsiveness of the bids. Deviations and Information Identified During Bid Analysis of the Two Responsive Bids Received Zim Industries, Inc. • List of Subcontractors o Minor discrepancies were identified in the names of certain listed subcontractors when compared to the California Department of Industrial Relations (CA DIR) and the California State License Board (CSLB) records. Staff verified the correct entity names and confirmed that all listed subcontractors are currently registered with the CA DIR and maintain active CSLB licenses, as applicable. o Minor address discrepancies were identified for two listed subcontractors. Staff verified the subcontractors' identities and confirmed the differences were attributable to alternate mailing and physical business addresses. • Bidder's General Information o Item 6 did not include the address and phone number of the surety company. Staff obtained the missing information directly from the agent and verified that the Bid Bond is valid and that the surety company meets District requirements. • Bid Schedule No. 1 and Bid Schedule No. 2 - Mobilization and Demobilization o The Mobilization and Demobilization line item exceeded 10% of the total bid amount for both Bid Schedules. o As required by the Contract Documents, the bidder provided documented justification for the costs. o The justification was reviewed and accepted by the District. Gregg Drilling, LLC • List of Subcontractors o Minor discrepancies were identified between the names of certain subcontractors listed on the Bid Form and the entity names reflected in the California Department of Industrial Relations (CA DIR) and the California Contractors State License Board (CSLB) records. Staff verified the correct entity names and confirmed that the affected subcontractors maintain current DIR registrations and active CSLB licenses, as applicable. o Minor address discrepancies were identified for several listed subcontractors. Staff verified the subcontractors' identities and confirmed the differences were attributable to alternate mailing and physical business addresses. o The registration number provided for one listed subcontractor corresponded to a different entity in the CA DIR database. Staff was unable to independently verify the subcontractor's CA DIR registration using the information provided on the Bid Form. o One subcontractor was listed on the Bid Form under a trade name rather than the legal entity name reflected in the CA DIR and CSLB records. Staff verified the relationship between the trade name and the licensed entity. Bidder's General Information o Item 6 did not include the name, address or phone number of the surety company. Staff obtained the missing information directly from the agent and verified that the Bid Bond is valid and that the surety company meets District requirements. o The CSLB license expiration date was listed incorrectly on the Bid Form. Staff verified through the CSLB website that the license is current and active and confirmed the correct expiration date. General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6f TO: Board of Directors FROM: Mark Seelos, Water Resources Manager MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: Sunset and Tanglewood Well Drilling Project REQUESTED BOARD ACTION: (1) Approve the Scope of Work from Montgomery & Associates to provide hydrogeological support, specialty inspection services, and construction management services for the Sunset and Tanglewood Well Project; and (2) authorize the General Manager to execute Task Order No. 3 with Montgomery & Associates in the amount of $328,645. DISCUSSION: Contractor mobilization for the Sunset and Tanglewood Well Project is scheduled for early July 2026. Montgomery & Associates provided the District with assistance throughout Project development, including well site planning, preparing the Plans and Specifications, and bidding support. Onsite hydrogeological support, specialty inspection, and construction management is crucial to successful well projects because subsurface conditions encountered during drilling often differ from anticipated conditions and require real-time evaluation and decision-making. Continuous oversight helps ensure the wells are constructed in accordance with the Project Specifications, geologic conditions are accurately documented, design adjustments are appropriately implemented when necessary, and construction activities are completed in a manner that protects well performance, water quality, and the District's long-term water supply investment. The District has selected Montgomery & Associates to provide hydrogeological support and construction management services to provide project continuity. The Project team will be led by Bill DeBoer, P.G., C.Hg., a principal hydrogeologist with 20 years of experience in exploration drilling, aquifer characterization, pumping tests, and the design and installation of supply wells. Specific tasks include construction meetings, review of submittals and requests for information, final well designs, and onsite specialty inspection and construction management for the duration of the Project. The total cost for both well sites is not to exceed $328,645. Mark Seelos June 18, 2026 Page 2 SCHEDULE: Upon Board Approval COSTS: $328,645 ACCOUNT NO: 20.30.8681/SSWRBD: $164,323; 20.30.7006/TNGLWD: $164,322 BUDGETED AMOUNT AVAILABLE: $3,167,656 (Fiscal Year 2026 available budget and additional budget allocated in Fiscal Year 2027); Fiscal Year 2026 available budgets - 20.30.8681/SSWRBD: $371,655; 20.30.7006/TNGLWD: ($3,999). IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): Yes D No ❑ N/A ATTACHMENTS: Montgomery & Associates Proposal CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Water GENERAL MANAGER: YES /Qr NO CHIEF FINANCIAL OFFICER: YES / NO MONTGOMERY Niit &ASSOCIATES Groundwater experts since 1984 Water Resource Consultants May 8, 2026 Mr. Mark Seelos Water Resources Manager South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 SUBJECT: PROPOSAL FOR CONSTRUCTION MANAGEMENT OF SUNSET WELL NO. 2 AND TANGLEWOOD WELL Dear Mr. Seelos: Montgomery&Associates (M&A) is pleased to submit this scope and fee proposal to South Lake Tahoe Public Utility District's (District)to provide services during construction of the new Sunset Well No. 2, construction of the new Tanglewood well, and destruction of the long- screened Tanglewood test well. M&A completed the design and technical specifications for the Sunset Well site under Task Order No. 1 and for the Tanglewood Well site under Task Order No. 2. This proposal is to provide ongoing support for the projects during the well construction and testing phase, anticipated to occur between July and October 2026. M&A is currently supporting the District's solicitation of bids from drilling Contractors. SCOPE OF WORK The Scope of Work(SOW) is based on the project technical specifications and includes construction management, data analysis and reporting. M&A proposes the following tasks to complete this project: • Task 1 —Construction Management: Sunset Well Site • Task 2—Construction Management: Tanglewood Well Site • Task 3 —Reporting M&A will manage construction management budgets separately for each well site, though concurrent activities at both sites are anticipated. The scope of work presented herein for each site is substantially similar, though the Tanglewood site includes a well destruction component. 1970 Broadway,Suite 700,Oakland,CA 94612 • 510.903.0458 • elmontgomery.com o. MONTGOMERY & ASSOCIATES These costs will be revisited after the District's Contractor has been awarded and submits a project schedule to verify the assumed level of effort is consistent with contractor timelines and District expectations. M&A anticipates construction activity to occur between July 13, 2026, and October 15, 2026. M&A will provide construction management at the level requested by the District. For estimating purposes, M&A recommends a level of oversight shown on Table 1. Construction management costs provided herein are estimated based on anticipated durations and level of oversight required for each activity. Actual durations are subject to the performance of the District's Contractor and are not controlled by M&A. As such, actual costs may increase or decrease based on actual durations, or by District request for modified observation schedules. Field oversight costs are based on the Scientist 2 hourly rate, but efforts will be made to use the most cost-efficient, responsible staff level where feasible. For cost estimating purposes it is assumed that separate staff will be required for each site. M&A will work to identify additional cost efficiency when there is active and concurrent construction at both sites, where appropriate and if it does not impact the quality of the oversight. Table 1. Recommended Level of Oversight Activity Full-time Part-time No Observation Observation Observation Well Destruction Mobilization and Site Preparation X Well Destruction X Demobilization X Well Drilling,Construction,Development and Testing Mobilization,Tree Removal,and Sound Curtain Installation X Conductor Casing Installation and Sanitary Seal X Pilot Borehole Drilling X Geophysical Survey X Borehole Ream X Caliper Survey X Well Construction X Mechanical and Chemical Well Development X Demobilization of the Drilling Rig X Installation of Test Pump X Test Pump Development X Production Tests X Test Pump Removal X Video Survey X Disinfection and Capping X Final Demobilization X 2 � MONTGOMERY & ASSOCIATES Costs are not included herein for construction management of non-intrusive activities including grubbing and grading, borehole circulation while waiting for materials, and cement cure or chemical contact wait periods. Task 1: Construction Management: Sunset Well Site M&A will provide construction management services during the installation and testing of Sunset Well No. 2 to ensure compliance with the technical specifications and will provide on-site presence consistent with Table 1. M&A will review and respond to contractor's submittals and maintain a comprehensive submittals log throughout the project. A well design technical memorandum will be written to document the findings of the pilot borehole and to provide a final recommended final well design. The technical memorandum will be completed and submitted for District review within 48 hours after receipt of electronic geophysical results, sieve analysis data, and any other relevant data. The technical memorandum will include a proposed well construction schematic, casing schedule, and annular material schedule. A vertically scaled graphic containing observed lithology and geophysical results will be included with the technical memorandum. This includes preparation of a draft technical memorandum, 1 round of District comments, and finalization. The draft and final technical memorandum will be submitted electronically in PDF format. Task 2: Construction Management: Tanglewood Well Site M&A will provide construction management services during the installation and testing of Tanglewood Well and destruction of the Tanglewood test well to ensure compliance with the technical specifications and will provide on-site presence consistent with Table 1. M&A will review and respond to contractor's submittals and maintain a comprehensive submittals log throughout the project. A well design technical memorandum will be written to document the findings of the pilot borehole and to provide a final recommended final well design. The technical memorandum will be completed and submitted for District review within 48 hours after receipt of electronic geophysical results, sieve analysis data, and any other relevant data. The technical memorandum will include a proposed well construction schematic, casing schedule, and annular material schedule. A vertically scaled graphic containing observed lithology and geophysical results will be included with the technical memorandum. This includes preparation of a draft technical memorandum, 1 round of District comments, and finalization. The draft and final technical memorandum will be submitted electronically in PDF format. 3 �►� MONTGOMERY & ASSOCIATES Task 3: Reporting A Well Installation Report will be prepared following completion of site activities related to well destruction and construction. The report will include a description of the work completed, description of the methods and procedures used, results and discussion of drilling and testing activities, conclusions, recommendations, and relevant appendices. M&A anticipates separate reports will be prepared for each of the following activities: • Sunset Well No. 2 Construction, Development and Testing Report • Tanglewood Long-Screened Test Well Destruction Report • Tanglewood Well Construction, Development and Testing Report Draft reports for District comment will be prepared in Microsoft Word. Final will include 1 hardcopy and 1 PDF copy. The hardcopy report will also include long-form printouts of downhole logging (geophysical, caliper, alignment, spinner), a copy of the complete video survey in MP4 format(provided on DVD or flash drive), and 1 set of drill cutting chip trays (excluding the well destruction report). COSTS The estimated costs by task are summarized below and detailed in the attached table. Labor Costs Expenses TOTAL Task 1:Sunset Construction Management $126,755 $12,000 $138,755 Task 2:Tanglewood Construction Management $133,010 $12,000 $145,010 Task 3: Data Analysis and Reporting $44,880 $0 $44,880 TOTAL COST — $304,645 . $24,000 $328,645 If you have any questions, do not hesitate to contact me. Sincerely, Bill DeBoer, P.G., C.Hg. Principal Hydrogeologist 4 �JMONTGOMERY & ASSOCIATES Scientist Technical 6 Scientist 4 Scientist 2 Editor Labor Costs Expenses TOTAL $/hr $265 $215 $165 $95 Task 1:Sunset Construction Management CIIMIM Meetings 12 12 - - $5,760 - $5,760 Submittal Review 10 6 - - $3,940 - $3,940 Tree Removal - 1 8 - $1,535 - $1,535 Mobilization and Sound Curtain Installation 8 8 10 - $5,490 - $5,490 Conductor Casing Installation and Sanitary Seal 1 2 24 - $4,655 - $4,655 Pilot Borehole Drilling 4 16 130 - $25,950 - $25,950 Geophysical Survey - 1 12 - $2,195 - $2,195 Well Design Technical Memorandum 6 8 4 2 $4,160 - $4,160 Borehole Ream - 4 40 - $7,460 - $7,460 Caliper Survey - 1 12 - $2,195 - $2,195 Well Construction 8 12 80 - $17,900 - $17,900 Mechanical and Chemical Well Development 8 8 120 - $23,640 - $23,640 Test Pump Development 2 8 60 - $12,150 - $12,150 Production Tests 2 8 36 - $8,190 - $8,190 Video Survey - 1 8 - $1,535 - $1,535 Indirect Costs(mobile office,mileage,transportation,lodging) - - - - - $12,000 $12,000 Task 1 Subtotals 61 96 544 2 $126,755 $12,000 $138,755 Task 2:Tanglewood Construction Management NMI Meetings 12 12 - - $5,760 - $5,760 Submittal Review 10 6 - - $3,940 - $3,940 Well Destruction - 4 16 - $3,500 - $3,500 Mobilization and Sound Curtain Installation 8 8 10 - $5,490 - $5,490 Conductor Casing Installation and Sanitary Seal 1 2 24 - $4,655 - $4,655 Pilot Borehole Drilling 4 16 156 - $30,240 - $30,240 Geophysical Survey - 1 12 - $2,195 - $2,195 Well Design Technical Memorandum 6 8 4 2 $4,160 - $4,160 Borehole Ream - 4 40 - $7,460 - $7,460 Caliper Survey - 1 12 - $2,195 - $2,195 Well Construction 8 12 80 - $17,900 - $17,900 Mechanical and Chemical Well Development 8 8 120 - $23,640 - $23,640 Test Pump Development 2 8 60 - $12,150 - $12,150 Production Tests 2 8 36 - $8,190 - $8,190 Video Survey - 1 8 - $1,535 - $1,535 Indirect Costs(mobile office,mileage,transportation,lodging) - - - - - $12,000 $12,000 Task 2 Subtotals 61 99 578 2 $133,010 $12,000 $145,010 Task 3:Data Analysis and Reporting NIP' 11111 Sunset Well No.2 Well Installation Report 12 36 40 4 $17,900 - $17,900 Long-Screen Test Well Destruction Report 4 18 24 2 $9,080 - $9,080 Tanglewood Well Installation Report 12 36 40 4 $17,900 - $17,900 Task 3 Subtotals 28 90 104 10 $44,880 $0 $44,880 TOTAL HOURS 150 285 1,226 14 TOTAL COST $39,750 $61,275 $202,290 $1,330 $304,645 $24,000 $328,645 5 f MONTGOMERY & ASSOCIATES Assumptions • M&A employees have no authority to exercise any control over the drilling contractor or their employees in connection with their work or any health and safety precautions and have no duty for inspecting, noting, observing, or correcting health or safety deficiencies of the drilling contractor or any other persons at the site except M&A employees. M&A will promptly notify the District of any observed or perceived health and safety deficiencies by the drilling contractor or any other persons at the site. • M&A shall have access to the construction sites to perform the services. The District and/or the drilling contractor acknowledge that M&A shall not be liable for property access related issues, conditions, damages, or incidents arising in the course of performing the services and M&A shall be indemnified and held harmless from and against any claims, liabilities, suits, damages, or losses arising from such property access or site conditions. • M&A's presence at a construction site does not make its employees in any way responsible for those duties that belong to the District and/or the drilling contractor or other entities, and does not relieve the drilling contractor or any other entity of their obligations, duties, and responsibilities, including but not limited to methods, means, techniques, sequences, and procedures necessary for coordinating and completing construction work in accordance with the contract documents and any health or safety requirements. • The presence of M&A employees at the construction sites is to provide the District a greater degree of confidence that the completed work will conform generally to the construction documents and that the integrity and the design concept as reflected in the construction documents have been implemented and preserved by the drilling contractor. M&A neither guarantees the performance of the drilling contractor nor assumes responsibility for drilling contractor's failure to perform work in accordance with contract documents. • M&A staff will perform construction management activities consistent with enforcing specifications and will not direct drilling contractor means or methods. • The drilling contractor is responsible for testing, maintaining, and recording drilling fluid properties. M&A will observe and record results as appropriate. Deviations to the specifications will be reported to the District within 24 hours of being observed. • Fieldwork will be conducted during 12-hour work days on a standard 5-day work week, except during pilot borehole drilling, geophysical logging, caliper logging, well construction, mechanical and chemical development, and constant-rate pump testing. M&A assumes a 24-hour work schedule for these activities, including weekends. M&A will not be present during non-drilling activities unless noted herein. 6 o. MONTGOMERY & ASSOCIATES • Equipment rentals and fieldwork consumable purchases may be required. These may include but are not limited to field office, field vehicles, pressure transducers, field notebooks, and chip trays. Costs for these items are included herein. • M&A assumes no subcontractor, subconsultant, vendor or laboratory costs associated are required. • Drilling contractor is responsible for the containment,profiling, and disposal of all waste generated during the project. 7 General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6g TO: Board of Directors FROM: Mark Seelos, Water Resources Manager MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: Indian Creek Reservoir Nutrient Management Project REQUESTED BOARD ACTION: (1) Approve the Scope of Work from Stillwater Sciences to provide planning, permitting, and monitoring services for the Indian Creek Reservoir Nutrient Management Project; and (2) Authorize the General Manager to execute Task Order No. 3 with Stillwater Sciences in the amount of $160,823. DISCUSSION: Indian Creek Reservoir (ICR) was originally constructed in 1967 for temporary storage of treated wastewater exported from the Lake Tahoe Basin and was later converted to a surface water reservoir supplied by Indian Creek and the West Fork Carson River. Despite this conversion, legacy nutrient loading has contributed to long- term water quality impairments, including elevated phosphorus concentrations, seasonal anoxia, algal growth, and cyanobacteria blooms. As a result, ICR is subject to a Total Maximum Daily Load (TMDL) program aimed at reducing phosphorus loading. To address internal phosphorus loading, the District previously implemented a hypolimnetic oxygenation system; however, long-term monitoring has not demonstrated sustained water quality improvements, and ongoing equipment and infrastructure requirements have made continued operation costly and impractical. In 2025, the District partnered with Stillwater Sciences and UC Merced to evaluate sediment phosphorus treatment alternatives. Testing identified aluminum chlorohydrate (ACH) as the preferred amendment due to its effectiveness, cost efficiency, and low risk of adverse impacts. Building on this work, the District secured $100,000 of funding through the Bureau of Land Management's Aquatic Resource Management Program. In March 2026, the District received Notice of Award No. L26AC00045 for the Indian Creek Reservoir Nutrient Control Project. The award supports Project planning and baseline monitoring activities, including installation of real-time monitoring equipment, development of a public water quality dashboard, preparation of monitoring and chemical application plans, and interim reporting. Future project phases pending additional funding will Mark Seelos June 18, 2026 Page 2 include implementation of the selected nutrient control treatment and effectiveness monitoring. On April 30, 2026, the District advertised a Request for Proposal on Planet Bids for the scope of work identified in the grant application. Submissions were opened on May 29, 2026, at 5:00 p.m. The District received one proposal from Stillwater Sciences. The proposal was favorably reviewed by the District's Engineering and Grants teams. An interview was conducted on June 10, 2026. Staff recommends that the District award the contract to Stillwater Sciences. Issuance of Task Order No. 3 will utilize the District's existing Master Services Agreement with Stillwater Sciences. SCHEDULE: Upon Board Approval COSTS: $160,823 ACCOUNT NO: 10.30.4405/ICRNMP BUDGETED AMOUNT AVAILABLE: 10.30.4405/ICRNMP: $85,000 (Fiscal Year 2026-2027), $100,000 Grant from Bureau of Land Management IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): Yes ❑ No ❑ N/A ATTACHMENTS: Stillwater Sciences Proposal CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer GENERAL MANAGER: YES NO CHIEF FINANCIAL OFFICER: YES NO REQ U EST FOR PRO PO SAL Indian C reek Reservoir N utrient C ontrol Planning and Technical Services MAY 2026 PREPARED FOR PREPARED BY Mark Seelos Stillwater Sciences �� �� South Tahoe Public 2855 Telegraph Utility District Ave, Suite 400 Stillwater Sciences 1275 Meadow Crest Drive Berkeley CA 94705 La keTech South Tahoe CA 96150 510-848-8098 • • •b(-;..'1' _. , - a -- —=— _- -t—; _-- --- - _ �� ter'' --.i�L=-• - Indian Creek Reservoir Nutrient Control Planning&Technical Services TABLE OF CONTENTS TRANSMITTAL LETTER 1 Consulting Agreement Considerations 1 FIRM EXPERIENCE 2 Select Project Experience 3 PROJECT TEAM 5 Organizational Chart 7 PROJECT APPROACH 7 Task 1: Project Coordination and Technical Review 8 Task 2: Deploy and Maintain Real-time Monitoring System 9 Task 3: Chemical Application Plan 10 Task 4: Water Quality Monitoring Plan 10 Task 5: Environmental Compliance and Permitting Support 11 Task 6: Reporting and Technical Support 12 COST ESTIMATE PROJECT SCHEDULE II Appendices Appendix A Resumes Appendix B Sample Work Products Appendix C Required Grant Forms (Attachment D) Stillwater Sciences May 2026 Indian Creek Reservoir Nutrient Control Planning&Technical Services TRANSMITTAL LETTER Mark Seelos Water Resources Manager South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 Dear Mr. Seelos, Stillwater Sciences (Stillwater) and our teaming partners, including LakeTech and Dr. Marc Beutel, possess extensive experience in nutrient dynamics, algal bloom prevention and mitigation, lake and reservoir management,treatment and monitoring, and environmental permitting. While our combined experience spans numerous projects in California, our familiarity with recent planning efforts to minimize or eliminate phosphorus internal loading in Indian Creek Reservoir will allow us to rapidly get up to speed and stay on schedule for the first year of the proposed project. Having already informed the South Lake Tahoe Public Utility District(District) regarding the applicability of various sediment amendment options, including aluminum chlorohydrate (ACH), the Stillwater Team is uniquely positioned and qualified to deliver efficient, science-driven planning, real-time monitoring, and compliance support that reduces project risk and aligns seamlessly with Bureau of Management (BLM) grant requirements. As articulated in the request for proposals (RFP),the District has identified a set of desired services for initial planning, development of a chemical application plan, and baseline monitoring to be implemented by the District prior to ACH application.The Stillwater Team will conduct a thorough technical review of existing conditions and background materials to prepare for the chemical application. In parallel, our team will install and maintain a real-time monitoring buoy, develop a robust ACH chemical treatment plan, and design a water-quality monitoring program that District staff can readily implement. We will also guide environmental compliance and permitting efforts to streamline approvals and reduce project risk. Our proposed scope aims to position the District for successful implementation of phosphorus sequestration treatments in Indian Creek Reservoir and monitoring that will demonstrate effectiveness as the project advances. Consulting Agreement Considerations Per guidance in the RFP, page 6 section 6, Stillwater Sciences requests the District's consideration of the same exceptions to the District's Standard Consulting Agreement that Stillwater Sciences and the District negotiated in the Master Services Agreement, dated April 7, 2025. Stillwater Sciences will provide rationale for these exceptions upon request from the District. Additionally, Stillwater Sciences requests the District's consideration of adding a mutual waiver of consequential damages clause to allocate risk in a commercially reasonable manner consistent with the nature of professional services. Stillwater proposes the following language be added: Consequential Damages: Notwithstanding any other provision of this Agreement, in no event shall either Consultant or District be liable to the other Party for indirect, incidental, punitive, or consequential damages of any nature (collectively Consequential Damages), including, but not limited to, loss of use, loss of revenue, or loss of income,whether arising in contract,tort (including negligence), or other legal theory, even if the possibility of such damages is known at the time of the execution of this Agreement. Stillwater Sciences May 2026 1 Indian Creek Reservoir Nutrient Control Planning&Technical Services Overall,we believe that the Stillwater Team offers practical, experience-based insights that will improve the District's likelihood of success, reduce implementation risks, and optimize cost-effectiveness of the planned phosphorus control measure. We are pleased to provide the following proposal to assist the District with this important work. Sincerely, Maia Singer, PhD, CED Senior Scientist/Water Quality Specialist; Proposed Project Manager 510-848-8098 I maia@stillwatersci.com FIRM EXPERIENCE For the proposed Indian Creek Reservoir Nutrient Control Planning and Technical Services (Project),the Stillwater Sciences Team has assembled a team of experts that brings decades of experience assisting clients throughout California in evaluating reservoir water quality improvement alternatives and implementing cost-effective approaches. Recently, Stillwater and Dr. Marc Beutel assisted the District with an assessment of several commercially available sediment amendments for phosphorus sequestration in Indian Creek Reservoir and bench-scale testing of three alternatives. Stillwater Sciences has worked on a variety of reservoir water quality projects for the East Bay Municipal Utility District, Marin Municipal Water District, San Francisco Public Utilities Commission, Vista Irrigation District and the City of Escondido. LakeTech has advised public agencies, lake managers, and private owners on ecosystem-based aquatic management, and is being recognized in California for promoting sustainable pest management practices to protect waterways and public access to nature. In addition, Stillwater Sciences continues to engage with Dr. Marc Beutel, University of California at Merced, so that together we may apply cutting-edge research on water quality improvement techniques to support our clients as they manage varying water resource challenges. Stillwater Ecosystem,Watershed & Riverine Sciences(DBA Stillwater Sciences) Stillwater is a 120-person scientific and engineering consulting firm with specialists in water quality, aquatic and terrestrial biology,wetland and restoration ecology, Stillwater geomorphology, biostatistics, restoration engineering design, and Geographic Sciences Information Systems (GIS). Stillwater was founded on the principle that sound science helps build consensus and successfully manage natural resources. Stillwater is 100% employee owned and is a California-certified small business. Stillwater has more than 20 years of experience in lake and watershed management. Our comprehensive approach to lake and watershed management services considers both current conditions and long-term water quality improvement goals. Our work includes assessing nutrient and contaminant cycling within aquatic systems, including sediment—water interactions; design and implementation of algae and cyanobacteria monitoring programs, and interpretation of algal indices and time-series data to actively support management decisions. Stillwater also develops reservoir management plans that aim to reduce internal and external nutrient loading and mitigation of harmful algal blooms (HABs)through hypolimnetic oxygenation and other phosphorus-sequestration strategies. Stillwater also provides technical support for water quality permitting and regulatory compliance. Stillwater Sciences May 2026 2 Indian Creek Reservoir Nutrient Control Planning&Technical Services LakeTech, Inc. is a California-based water resources management company U La keTech that takes a holistic approach to water resource management, combining decades of hands-on limnology experience with modern data science and offering water agencies a practical, cost-effective path from raw data to confident decision-making. LakeTech uses an integrated pest management (IPM) based approach to keep lakes healthy and usable for the public. Practices that mitigate aquatic pests, like improving lake aeration and increasing oxygen levels to manage algal blooms, are prioritized over chemical inputs.The results include reduced pest management issues, decreased need for chemical inputs, and maintenance of natural lake qualities. LakeTech won the 2025 IPM achievement award from California Department of Pesticide Regulation (CA DPR). Dr. Marc Beutel is a senior water quality consulting engineer and professor from the UC Merced School of Engineering whose areas of expertise include control of dilute pollutants, including nutrients and metals such as iron, manganese and mercury, in managed aquatic ecosystems. Select Project Experience The following projects illustrate our team's understanding and experience with the proposed scope of services, knowledge of the area, collaborative approaches to problem solving, and ability to assist clients and diverse stakeholder groups with their specific project goals. Each of these projects have been completed within the last 5 years or are currently in process. References for each project are included. Indian Creek Reservoir Sediment Phosphorus Investigations, South Tahoe Public Utility District I Team Members: Stillwater Sciences, Dr. Marc Beutel Reference:Paul Hughes, General Manager;Mark Seelos, Project r ;� Manager/ mseelos@stpud.us, 530-543-6204 Stillwater Sciences, in coordination with the District and Dr. Marc Beutel, assessed three selected sediment amendments for �'— t ►;;a' - phosphorus treatment efficacy in Indian Creek Reservoir.The scope of work included sediment and water sampling by Dr. Marc j Beutel, amendment dosage determination by Stillwater, and ' �` �f chamber incubations (experimentation) and reporting by Dr. Marc '' i / I - Beutel. Stillwater undertook project management, authored a ✓Nutrient control planning technical memorandum regarding sediment amendment ✓Limnological services selection, and reviewed reporting by Dr. Beutel. Briones Reservoir Water Quality Improvement Study and Mokelumne Watershed Wildfire Response Plan, East Bay Municipal Utility District I Team Members: Stillwater Sciences, Dr. Marc Beutel Reference:Sarah Plummer, East Bay Municipal Utility District / sarah.plummer@ebmud.com, 510-287- 2099 Stillwater is leading a multi-disciplinary team to prepare planning and preliminary design documents for the Briones Reservoir Water Quality Improvement Study and Mokelumne Watershed Wildfire Response Plan. Dr. Marc Beutel collaborated in the study as a senior advisor. For the Briones Reservoir study,the goal is to characterize water quality dynamics and identify operational, capital, and watershed management improvements that will allow the East Bay Municipal Utility District(EBMUD)to respond quickly and effectively to current and emerging water quality threats. Stillwater Sciences May 2026 3 Indian Creek Reservoir Nutrient Control Planning&Technical Services _ . As a part of this effort, Stillwater scientists summarized iiiiiiire.r.„,..._ watershed and reservoir characteristics to support the identification of key factors that influence the formation of taste and odor(T&O)-causing compounds and harmful and nuisance IIIalgal blooms,forming the basis of a conceptual model for Briones Reservoir.The Stillwater Team evaluated multiple potential water quality improvement strategies to inform EBMUD's selection of a preferred alternative and associated preliminary design. Currently, Stillwater is preparing a Water Quality Monitoring Plan for Briones Reservoir(and the Mokelumne Aqueduct, as ✓Reservoir water quality planning necessary)that will enable EBMUD to maintain a robust water ✓Nutrient control planning quality dataset that supports early warning of sudden downturns ✓Limnological services in water quality.The Monitoring Plan includes field and analytical ✓Monitoring plan development parameters, sampling location and frequency, as well as QA/QC procedures. Management and Mitigation of Harmful Algal Blooms in Lakes Henshaw and Wohlford,Vista Irrigation District and City of Escondido I Team Members:Stillwater Sciences, Dr. Marc Beutel Reference:Lesley Dobalian, Vista Irrigation District I Iobalian@vidwater.orq, 760-597-3112ME Stillwater led a multidisciplinary team to assist Vista Irrigation -...�, District and the City of Escondido in addressing HABs in lakes _ Henshaw and Wohlford, while maintaining maximum operational flexibility of the associated water system and supporting multiple beneficial uses, including tribal water rights. During Phase I,the team developed strategies to identify feasible and cost-effective solutions for each reservoir that,to the degree possible, prevent HABs and elevated cyanotoxin concentrations,while ✓Reservoir water quality planning incorporating short-and long-term strategies to mitigate ✓Nutrient control planning potential impacts, including rapid response monitoring, algaecide ✓Limnological services application, phosphorus inactivation, oxygenation of reservoir ✓Monitoring plan development bottom waters, and potentially bypass operations. During Phase ✓Environmental compliance support II, the team analyzed ongoing Lake Henshaw monitoring data to inform implementation of the Phase I selected alternatives; and decided whether to proceed with one or more pilot tests for mitigating and/or preventing HABs in Lake Henshaw. Stillwater coordinated with the Regional Board regarding permitting requirements for algaecides, lanthanum modified clay application, hypolimnetic oxygenation, and prepared permit applications.The project also included development of a water quality management plan that allows assessment of post-project success through implementation, effectiveness, and validation monitoring for both short-and long-term project components. Stillwater Sciences May 2026 4 Indian Creek Reservoir Nutrient Control Planning&Technical Services Lake Temescal & Lake Anza Water Quality Monitoring and Treatment Optimization for East Bay Regional Park District I Team Members: LakeTech Reference:Anja Brey, East Bay Regional Parks District, : ,Spoirm-- * - hiccFisheries Department I ABrey@ebparks.org,510-697-6130 i� .,•!v r LakeTech scientists maintained a cloud-based water quality database and real-time monitoring stations in Lake _ Temescal. Using data from the water quality database and real-time monitoring stations, Lake Tech guided the installation of an oxygenation system in Lake Temescal. LakeTech scientists also used data to coordinate logistics, V Real time water quality monitoring dosing, and application of phosphorus sequestration ✓Logistics and application of phosphorus treatments for both Lake Anza and Lake Temescal. sequestration treatments LakeTech provided algaecide and herbicide applications ✓Environmental compliance support for invasive species control and supported regulatory reporting and NPDES-related compliance. PROJECT TEAM For the proposed Indian Creek Reservoir Nutrient Control Planning and Technical Services, Stillwater has assembled a team of experts that bring decades of experience assisting clients throughout California in evaluating reservoir water quality improvement alternatives and implementing cost-effective approaches. Maia Singer, PhD,CED I Stillwater Sciences—Berkeley,CA SENIOR SCIENTIST/WATER QUALITY SPECIALIST, PROJECT MANAGER " CONTACT: MAIA@STILLWATERSCI.COM 1510-848-8098 r � Maia Singer(PhD, Civil and Environmental Engineering) has expertise in aquatic sciences and engineering spanning water quality, limnology, river and wetland ecology, harmful algal blooms, mercury biogeochemistry, restoration planning, and monitoring design. Dr. Singer is a Certified Ecological Designer(CED) with the American Ecological Engineering Society(AEES). She is an experienced project manager, including complex, multi-year water quality and reservoir-focused projects for public agencies and districts, including East Bay Municipal Utility District, Marin Municipal Water District,Vista Irrigation District, and Elsinore Valley Municipal Water District. Dr. Singer recently served as project manager for the District's Indian Creek Reservoir Sediment Phosphorus Investigation. On each reservoir/lake management project, Dr. Singer has worked cooperatively with the local water districts and state and/or federal regulatory agencies to develop and implement projects that meet agency and district needs rigorously and cost- effectively. Additionally, she routinely coordinates with academic collaborators to ensure the best available scientific expertise is brought to bear cost-effectively. Noah Hume, PhD, PE I Stillwater Sciences—Berkeley,CA SENIOR SCIENTIST/AQUATIC ECOLOGIST, PROJECT DIRECTOR ' CONTACT: NOAH@STILLWATERSCI.COM 1510-848-8098 Dr. Hume (PhD, Civil and Environmental Engineering) adds expertise with reservoir management and development of algae mitigation strategies for eleven reservoirs under the San Francisco Public Utilities Commission. Dr. Hume has 40 years of experience in aquatic sciences and engineering spanning water quality, ecology, algae mitigation and monitoring, water supply and treatment, and engineering design. Dr. Hume led the Stillwater Sciences May 2026 5 Indian Creek Reservoir Nutrient Control Planning&Technical Services analysis and update of an Algae Monitoring and Mitigation Plan for the San Francisco Public Utilities Commission, and a focused review of a 3D-modeling study at Lake Elsinore, CA to determine long-term operational effects on dissolved oxygen, chlorophyll-a, and microcystin levels. AIMNaivy Dennise Rodal-Morales, PhD I Stillwater Sciences—Berkeley, CA ENVIRONMENTAL ENGINEER CONTACT: NRODAL-MORALES@STILLWATERSCI.COM 1510-848-8098 • Dr. Naivy Rodal-Morales (PhD, Environmental Systems—Environmental Engineering) VP works on water quality, limnology, biogeochemistry, and remediation techniques in lakes and wetlands. She has actively participated in applied water and soil research projects centered around nutrient cycling, lake management, and mercury management. Dr. Rodal-Morales' experience includes analyzing and interpreting nutrient and metals cycling in lakes and reservoirs, algae mitigation strategies, modelling pollutant removal in wetlands, nutrient accumulation, and mass transport. Eli Kersh PCA, CLM I LakeTech—Benicia,CA IN-LAKE TREATMENT MANGER CONTACT: ELIPLAKETECH.COM 1415-307-0943 Eli Kersh (MS, Limnology) is the founder and president of LakeTech. Mr. Kersh is a , t!, Certified Lake Manager(CLM) from the North American Lake Management Society (NALMS),where he served as the Director of Region 9 and served three terms as President of the California Lake Management Society(CALMS). He is also a licensed Agricultural Pest Control Adviser in California and served five years on the Board of Directors for the California Weed Science Society. Mr. Kersh has monitored and managed water quality in Lake Anza and Lake Temescal, including the development of the real-time monitoring system in both lakes,the successful phosphorus management treatments in both lakes in 2025, and the installation of the OST oxygenation system in Lake Temescal in 2025. Mr. Kersh also manages water quality in Lake Merritt, Oakland, and for San Francisco Recreation and Parks Department. Byran Fuhrmann, PhD, MBA, CLM I LakeTech—Benicia, CA �'� i ENVIRONMENTAL WATER CHEMISTRY SOLUTIONS SCIENTIST CONTACT: DATA@LAKETECH.COM 1213-846-6306 Dr. Byran Fuhrmann (PhD, Environmental Systems) is an environmental chemist who has spent his entire professional career improving surface water quality. He is the lead inventor of six U.S. patents and four commercial products focused on improving water quality in lakes, rivers, and estuaries (EutroSORB, information at eutrosorb.com). He oversaw the use of these products and other technologies to restore water quality in hundreds of lakes across the United States, Europe,and Australia. Dr. Fuhrmann leverages this unique background to apply a grounded, scientific approach to identifying the most effective solutions to improve water quality. He is the president of the California Lake Management Society, a program committee member for the North American Lake Management Society, and a member of the American Water Works Association (AWWA) Source Water Protection Committee. Dr. Fuhrmann is also the executive director of Clean Water Help, an international nonprofit of volunteer water resource professionals who work to restore water quality for impoverished communities. Stillwater Sciences May 2026 6 Indian Creek Reservoir Nutrient Control Planning&Technical Services Marc Beutel, PhD, PE I Merced,CA SENIOR WATER QUALITY ENGINEER CONTACT: BEUTELWATERQUALITYENGINEERING@GMAIL.COM 1209-347-6605 . ,, Dr. Beutel (PhD, Civil and Environmental Engineering) is a professor in the Civil and f. Environmental Engineering Department at the University of California, Merced, and , J an active water quality consulting engineer. Dr. Beutel's work focuses on the control of diluted pollutants, including nutrients and metals such as iron, manganese and mercury, in managed aquatic ecosystems. He has played important roles in several lake oxygenation projects with a focus on quantifying hypolimnetic oxygen demand and sediment nutrient release under aerobic versus anaerobic conditions. His clients have included East Bay Municipal Utility District, City of San Diego Water Department,Vista Irrigation District, Marin Municipal Water District, Metropolitan Water District of Southern California, and South Tahoe Public Utility District. Organizational Chart c-4-0-.)..wesee.. Mark Seelos J Team Members Project Manager Project Director 1. Stillwater Sciences Maia Singer,PhD,CED1 Noah Hume,PhD,PE1 2. LakeTech 3. Marc Beutel Water Quality Lake Management&Treatment Limnology In-lake Treatment Eli Kersch,PCA,CLM2 Noah Hume,PhD,PE' Mafia Singer,PhD,CED' Nutrient Management,Water Quality Byran Fuhrmann,PhD,CLM2 Senior Advisor Maia Singer,PhD,CED' Marc Beutel,PhD,PE' Naivy Rodal-Morales,PhD' Environmental Compliance & Permitting Permitting Lead Maia Singer,PhD,CED' Permitting Support Naivy Rodal-Morales,PhD' PROJECT APPROACH Indian Creek Reservoir is a small (1,515 acre-ft) listed under Section 303(d) of the Clean Water Act for eutrophication. A Total Maximum Daily Load (TMDL) was implemented in 2003 with a water column total phosphorus target of 0.02 mg-P/L(CRWQCB, 2002). Management efforts have focused largely on controlling internal nutrient loading and improving dissolved oxygen conditions.A hypolimnetic Stillwater Sciences May 2026 7 Indian Creek Reservoir Nutrient Control Planning&Technical Services oxygenation system began operation in 2009,with the objective of increasing bottom-water dissolved oxygen concentrations, limiting sediment phosphorus release, and improving overall trophic status. Challenges with ongoing operation and maintenance of the oxygenation system, especially providing adequate power supply to the remote site, have led to consideration of alternative controls for internal phosphorus loading. In 2025, Dr. Marc Beutel and Stillwater undertook the Indian Creek Reservoir Sediment Phosphorus Investigations Project, including a desktop assessment of potential amendments and identification of three options that subsequently were added to experimental sediment-water interface chambers to determine their effectiveness in suppressing phosphorus release. Chamber results indicated that PhoslockTM, aluminum chlorohydrate (ACH), and alum were effective at suppressing phosphate accumulation under anoxic conditions'. As articulated in the RFP, the District selected ACH as the preferred treatment due to its low cost, minimal buffering requirements, and low risk for negative side effects2.The District is requesting support for the next project phase to determine baseline conditions, create chemical application and water quality monitoring plans, and support permitting activities prior to application of ACH in Indian Creek Reservoir. The Stillwater Team includes a group of experts with backgrounds in limnology, reservoir management and monitoring, lake treatability, chemistry, and ecological engineering to support the implementation of nutrient control measures, including the initial planning and baseline monitoring, development of a chemical application plan, installation of real-time monitoring instrumentation, public communication, and related technical documentation. In the sections below,we outline our approach to the requested project tasks. Task 1 : Project Coordination and Technical Review The Stillwater Team will facilitate a Project Kickoff Meeting with the District to review the overall project approach, assumptions, documents provided for review, project management approach, schedule, and initial permitting strategy. This initial task also includes a comprehensive review of background information identified during the Project Kickoff Meeting, such as reservoir monitoring data and technical reports,the Indian Creek Reservoir Sediment Phosphorus Investigation Final Report, bathymetric maps, operational and hydrologic information, and other relevant materials. Based review of existing information,we will identify key assumptions, determine which items require validation by District staff, and highlight decision points related to ACH permitting needs and installation of the continuous monitoring buoy. Stillwater Team members will also identify data gaps for characterizing baseline water quality conditions in Indian Creek Reservoir.The initial water quality review will focus on the most recent five years of data including, but not limited to,water temperature, specific conductivity, dissolved oxygen, pH, chlorophyll-a, nutrients (ammonia, orthophosphate,total phosphorus, nitrate), sulfate, and total and dissolved aluminum, iron, and manganese.The Stillwater Team will review reservoir water quality temporal and spatial trends to determine timing of thermal and chemical stratification and periods of elevated internal nutrient loading to inform optimal ACH application timing in spring 2027. Task 1 also covers general project management activities. Stillwater Sciences' project management approach ties integrally with our technical work approach, whereby our technical leads manage the Beutel,M.2026. Indian Creek Reservoir Sediment Phosphorus Investigation.Prepared by Beutel Water Quality Engineering, Merced,California,for South Tahoe Public Utility District,South Lake Tahoe,California. 2 Stillwater Sciences.2025.Indian Creek Reservoir Sediment Amendment Selection and Dosage Determination.Prepared by Stillwater Sciences, Berkeley,California,for South Tahoe Public Utility District,South Lake Tahoe,California. Stillwater Sciences May 2026 8 Indian Creek Reservoir Nutrient Control Planning&Technical Services project, ensuring both cost-effectiveness and less chance for errors and omissions. Our proposed Project Manager, Dr. Maia Singer, has extensive project management experience, as well as an ability to listen and communicate effectively. She rapidly assesses problems and directs the appropriate people and resources to their resolution, holds experience with and understanding of aquatic and terrestrial systems throughout northern California, and has excellent organizational and budget management skills. Her ability to respond quickly to ongoing client requests, facilitate communication among team members, and provide high quality interim work products, has allowed Stillwater to keep projects on track and on budget. • Progress Meetings—Key team members will participate in monthly progress video conferences (MS Teams/Zoom) with District staff. Meetings will review progress, discuss items requiring feedback, list outstanding issues requiring resolution, status of scope, schedule and budget, and risk review. Dr. Singer will manage all meetings. • Progress Reports—Each month prepare and submit progress reports. Clear and concise monthly progress reports facilitate quick understanding of key project achievements, status, and critical issues.The monthly progress reports will include all items listed in the RFP for progress reports. • Monthly Invoices—Monthly invoices will include a full accounting of all staff involved in the project for the associated month, number of hours, loaded hourly rate, sub-consultants, and other direct costs organized by individual scope. As a California-certified small business (DGS#14919),Stillwater frequently works on multi-disciplinary consultant teams.As a small business, we have streamlined our management and task implementation efforts to be highly responsive to client needs.Throughout the implementation of this Project,the Stillwater Team is committed to maintain consistent and collaborative communication with District staff. Although Dr. Singer will serve as a primary point of contact, other team members and other resource specialists will be made available as needed. Assumptions: • Project Kickoff Meeting will be virtual (MS Teams/Zoom), up to two hours in length, with attendance by Project Manager and up to three key technical staff. • Monthly Progress Meetings will be virtual (MS Teams/Zoom), up to one hour in length, with attendance by Project Manager and up to three key technical staff. • District will provide available quality-checked water quality data in a compiled Excel (or similar) workbook, electronic reports (e.g., MS Word, Adobe PDFs), and topographic maps/bathymetry as shapefiles and/or images. Deliverables: • Project Kickoff Meeting agenda and minutes • Monthly progress reports and invoices Task 2: Deploy and Maintain Real-time Monitoring System The Stillwater Team will provide, install, integrate, and maintain one rented monitoring buoy and associated real-time monitoring instrumentation according to the proposed Schedule.The instrumentation will be calibrated and deployed at two depths (e.g., near-surface, near-bottom) in the Indian Creek Reservoir water column and will measure continuous (e.g., 15-minute intervals)water temperature,specific conductivity, dissolved oxygen, pH, chlorophyll-a, and phycocyanin.The Stillwater Team will develop and maintain a public-facing water quality dashboard providing time series of the Stillwater Sciences May 2026 9 Indian Creek Reservoir Nutrient Control Planning&Technical Services aforementioned in-situ water quality parameters according to the proposed Schedule. (See Appendix B for an example work product.) Assumptions: • Up to two virtual (MS Teams/Zoom) meetings attended by Project Manager and up to two key technical staff to discuss proposed aspects of the proposed real-time monitoring system and gather feedback from District staff. • Up to eight field visits for one in-lake treatment manager, including$3.50 per mile for drive time and mileage x 375 miles round trip =$1,315 travel cost per field visit plus lodging, meals, boat rental, and incidental expenses. • One software annual license, provided through Stillwater Team. • One buoy, one telemetry/logger unit, one antenna, at least two AquaTROLL 500 multi-probe sondes, or similar, and required cables, provided by Stillwater Team. Deliverables: • Project Kickoff Meeting agenda and minutes Task 3: Chemical Application Plan In coordination with the District,the Stillwater Team will prepare a draft and final Chemical Application Plan for ACH application in Indian Creek Reservoir according to the proposed Schedule.The Chemical Application Plan will describe the application method,ACH concentrations, quantities, application frequency,timing, and spatial distribution within the lake. Assumptions: • Up to two virtual (MS Teams/Zoom) meetings attended by Project Manager and up to two key technical staff to discuss proposed aspects of the Draft Chemical Application Plan and gather feedback from District staff. • Up to two-week client review period for the Draft Chemical Application Plan. • One round of consolidated and reconciled client review comments on the Draft Chemical Application Plan. Deliverables: • Draft(MS Word) and Final Chemical Application Plan (Adobe PDF) Task 4: Water Quality Monitoring Plan To inform eventual application of ACH,the Stillwater Team, in coordination with the District, will develop a Water Quality Monitoring Plan for Indian Creek Reservoir(Water Quality Monitoring Plan). Monitoring is a necessary first step for determining whether project goals and objectives are achieved. Proposed elements of the Water Quality Monitoring Plan will include pre-treatment (baseline) and post- treatment effectiveness monitoring to elucidate whether ACH application successfully achieves the overarching goal of the project, namely to decrease phosphorus internal loading and concentrations in the reservoir. In addition, monitoring is likely to be part of permitting requirements, with a focus on parameters that indicate potential adverse water quality impacts during and/or following treatment (e.g., dissolved oxygen, pH). The Stillwater Team has experience developing both compliance and effectiveness monitoring programs, as in the Water Quality Management Plan for the General National Pollutant Discharge Stillwater Sciences May 2026 10 Indian Creek Reservoir Nutrient Control Planning&Technical Services Elimination System (NPDES)Permit for the Discharge of Lanthanum-modified Clay to Surface Waters of the United States in the San Diego Region, which included short-term compliance monitoring associated with phosphorus sequestration chemical applications (see Appendix B). As required in the RFP, the Water Quality Monitoring Plan will including field and analytical parameters, sampling locations, sampling frequency before, during, and after application, and quality assurance/quality control (QA/QC) procedures,to verify treatment effectiveness, detect adverse water quality impacts, and establish adaptive management triggers for modifying or halting treatment if necessary.The Water Quality Monitoring Plan will be implemented by the District's Water Quality Laboratory. Assumptions: • Up to two virtual (MS Teams/Zoom) meetings attended by Project Manager and up to three key technical staff to discuss proposed aspects of the Draft Water Quality Monitoring Plan and gather feedback from District staff. • Up to two-week client review period for the Draft Water Quality Monitoring Plan. • One round of consolidated and reconciled client review comments on the Draft Water Quality Monitoring Plan. Deliverables: • Draft (MS Word) and Final (Adobe PDF)Water Quality Monitoring Plan Task 5: Environmental Compliance and Permitting Support The Stillwater Team will coordinate with relevant regulatory agencies (e.g., Lahontan Regional Water Quality Control Board)to identify the most efficient permitting pathway, expectations, and documentation needs associated with implementing the Final Chemical Application Plan for the proposed nutrient control work. Since there is not currently a Statewide General NPDES Permit that covers ACH,there is inherent uncertainty regarding the process and level of supporting detail required by the permitting authorities. However, based on the Stillwater Team's recent experience obtaining permits through the San Diego Regional Water Quality Control Board for lanthanum modified clay application to a large southern California lake to sequester orthophosphate (see Appendix B), and for algaecide application to reduce cyanotoxin concentrations,the approval process for ACH will require follow up on the early outreach to the Lahontan Regional Water Quality Control Board initiated by the District in early 2026.Thus, our task budget includes development of an Environmental Compliance and Permitting Plan that describes background,ACH application methods (citing the Chemical Application Plan), rationale for ACH use, descriptions of chemical best management practices (BMPs), consideration of alternative control methods, and a monitoring and reporting program (citing the Water Quality Monitoring Plan). In collaboration with the District,the Stillwater Team will continue outreach to the Lahontan Regional Water Quality Control Board, and other relevant regulatory agencies,to identify the permitting pathway that will be described in the Environmental Compliance and Permitting Plan. If the District wishes,the Stillwater Team will serve as the primary point of contact with regulatory agencies throughout the permitting process. Given the inherent uncertainty regarding the process and level of supporting detail required by the permitting authorities,this task includes an as-needed contingency budget in the amount of$6,000 to support timely permitting and ACH application in Indian Creek Reservoir in spring 2027. Stillwater Sciences May 2026 11 Indian Creek Reservoir Nutrient Control Planning&Technical Services Assumptions: • Up to two virtual (MS Teams/Zoom) meetings attended by Project Manager and up to three key technical staff to discuss proposed aspects of the Environmental Compliance and Permitting Plan and gather feedback from the permitting authorities and District staff. • Up to two-week client review period for the Environmental Compliance and Permitting Plan. • One round of consolidated and reconciled client review comments on the Environmental Compliance and Permitting Plan. • 30-to 45-day public and/or agency review period for the Draft Permit Application. • One round of consolidated and reconciled permitting authority review comments on the Environmental Compliance and Permitting Plan and Draft Permit Application. Deliverables: • Draft (MS Word) and Final (Adobe PDF) Environmental Compliance and Permitting Plan • Permit application, including Notice of Intent, if required • Necessary permits and approvals on behalf of the District Task 6: Reporting and Technical Support This task includes the development of an interim monitoring report summarizing monitoring bouy data collected during the first few months of the project,to best inform decision making for spring 2027 ACH application. One or more additional technical memoranda may be needed to describe recommendations not covered in the Chemical Application Plan (Task 3),Water Quality Monitoring Plan (Task 4), or Environmental Compliance and Permitting Plan (Task 5);the Stillwater Team will coordinate with the District to identify the objectives and level of effort needed for any additional technical memoranda, relative to the schedule and budget. Recommendations will be aligned with project objectives and regulatory considerations.As needed, additional technical memeoranda will include key data observations from the monitoring bouy. In addition, the Stillwater Team will provide ongoing coordination and communication support to the District, such as preparation of presentation materials and participation in meetings with the District Board of Directors and other stakeholders, as requested,to convey project findings and recommendations. Further, the Stillwater Team will respond to periodic requests from District staff for information required to support grant compliance, including information necessary to support preparation and submittal of grant progress reportspreparation and submittal of grant progress reports. Assumptions: • Additional technical memoranda objectives and level of effort to be determined, as needed, in coordination with District and based on schedule and available budget. • Stakeholder meeting attendance will be virtual (MS Teams/Zoom) and will be attended by Project Manager and one or two optional key technical staff, up to 8 hours total. Deliverables: • Draft (MS Word) and Final (Adobe PDF) Interim Monitoring Report Stillwater Sciences May 2026 12 Indian Creek Reservoir Nutrient Control Planning&Technical Services COST ESTIMATE Task 1 Project Task 2 Deploy and Task 6 Coord and Maintain Real-time Task 3 Chem Task 4 WQ Task 5 Env Compliance Reporting and Tech Review Monitoring System Application Plan Monitoring Plan and Permitting Support Tech Support TOTAL LABOR Annual rate escalation ` 2026 2026 r 2026 2026 2027 2027 Labor Class Rate Rate Rate HOURS HOURS HOURS HOURS HOURS HOURS HOURS COST 2026 2027 2028 S/E 20 $275.00 $ 286.00 $297.00 2 0 0 10 0 2 14 $3,872 S/E 20 $275.00 $ 286.00 $297.00 33 4 3 18 18 25 101 $28,248 S/E 10 $156.00 $ 162.00 $168.00 69 4 8 56 46 59 242 $38,382 S/E08 $142.00 $ 148.00 $154.00 0 0 5 6 0 8 19 $2,746 S/E 12 $176.00 $ 183.00 $190.00 0 0 8 8 0 8 24 $4,280 S/E 06 $129.00 $ 134.00 $139.00 0 0 3 3 0 5 11 $1,444 TOTAL STILLWATER HOURS 114 8 27 101 64 107 421 TOTAL STILLWATER LABOR COST $21,679 $1,724 $4,578 $19,083 $12,600 $20,598 $80,262 SUBCONTRACTOR LABOR Sub Class/Role 1 200 208 216 19 32 32 4 0 10 97 $19,480 Sub Class/Role 2 200 208 216 2 24 14 4 0 4 48 $9,632 Sub Class/Role 3 175 182 189 5 0 0 8 2 0 15 $2,639 TOTAL SUBCONTRACTOR HOURS 26 56 46 16 2 14 160 $31,751 SUBCONTRACTOR LABOR MARK-UP $508 $1,120 $920 $300 $36 $291 $3,175 TOTAL SUBCONTRACTOR LABOR COST $5,583 $12,320 $10,120 $3,300 $400 $3,203 $34,926 TOTAL LABOR COST $27,262 $14,044 $14,698 $22,383 $13,000 $23,801 $115,188 Task 1 Project Task 2 Deploy and Task 6 Coord and Maintain Real-time Task 3 Chem Task 4 WQ Task 5 Env Compliance Reporting and Tech Review Monitoring System Application Plan Monitoring Plan and Permitting Support Tech Support STILLWATER EXPENSES: Units Units Units Units Units Units Total Units Cost STILLWATER EXPENSES COST: $0 $0 $0 $0 $0 $0 $0 SUBCONTRACTOR EXPENSES: TRAVEL 0 8 0 0 0 0 8 $10,520 LODGING(pp per day): 0 8 0 0 0 0 8 $1,800 MEALS(pp per day): 0 8 0 0 0 0 8 $400 EQUIPMENT+MAINTENANCE 0 1 0 0 0 0 1 $3,000 STAFF AND BOAT 0 8 0 0 0 0 8 $160 SOFTWARE 0 8 0 0 0 0 8 $600 EQUIPMENT 0 1 0 0 0 0 1 $22,000 SUBCONTRACTOR EXPENSES COST: $0 $38,480 $0 $0 $0 $0 $38,480 SUB.EXPENSES MARK-UP $0 $1,154 $0 $0 $0 $0 $1,154 TOTAL EXPENSES: $0 $39,634 $0 $0 $0 $0 $39,634 PROJECT COST: $27,262 $53,678 $14,698 $22,383 $13,000 $23,801 $154,823 Contingency $6,000 $6,000 PROJECT COST WITH CONTINGENCY: $27,262 $53,678 $14,698 $22,383 $19,000 $23,802 $260,823 Stillwater Sciences May 2026 I Indian Creek Reservoir Nutrient Control Planning&Technical Services PROJECT SCHEDULE 2026 2027 Project Task Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr Task 1. Project Coordination and Technical Review 1.1 Kick-off meeting C KO 1.2 Background Information Review 1.3 General Coordination with District 1.4 Project Management M M M M M M M M M M Task 2. Deploy and Maintain Real-Time Monitoring System 2.1 Instrument Deployment 2.2 Data Collection • 2.3. General Coordination with District Task 3 Chemical Application Plan 3.1 Chemical Application Plan D F 3.2 General Coordination with District Task 4 Water Quality Monitoring Plan 4.1 Water Quality Monitoring Plan D F 4.2 General Coordination with District Task 5 Environmental Compliance and Permitting Support 5.1 Permit Plan Package D F 5.2 General Coordination with District and Agencies Task 6 Reporting and Technical Support 6.1 Interim Monitoring Report D/F 6.2 Stakeholder Meetings 6.3 Grant Progress Reports 6.4 General Coordination with District Symbols: C=Contract Award and Execution, KO=Kickoff, D=Draft; F= Final, M=monthly meeting Stillwater Sciences May 2026 I I APPENDIX A Resumes Maia Singer, Ph. D. , C. E. D. Senior Scientist/Water Quality Specialist Dr. Maia Singer(Ph.D., Civil and Environmental Engineering, Ecological Engineering)has 27 years of experience in aquatic sciences and engineering spanning water quality,limnology, river and wetland ecology, restoration planning, and monitoring design.Dr. Singer has particular expertise in reservoir management, mercury biogeochemistry and monitoring plan design projects. She is an experienced project manager who brings technical expertise to a variety of interdisciplinary projects. AREAS OF EXPERTISE SELECTED PROJECT EXPERIENCE • Water Quality Indian Creek Reservoir Sediment Phosphorus Investigations, South Lake • Limnology/Reservoir Management Tahoe, CA(Client:South Tahoe Public Utility District):Dr.Singer served as • Monitoring Plan Design technical lead and project manager for the investigation of potential • Ecological Engineering reservoir sediment amendments for phosphorus control,including • Treatment Wetlands preliminary sediment collection and phosphorus fractionation, • Mercury Biogeochemistry sediment amendment selection and dosage determination,and flux chamber incubation and reporting,through collaboration with Dr.Marc YEARS OF EXPERIENCE Beutel,University of California at Merced. At Stillwater:23 years Management and Mitigation of Harmful Algal Blooms in Lakes Henshaw In Total:27 years and Wohlford, CA(Client:Vista Irrigation District and City of Escondido):Dr. Singer is project manager and technical lead for a multi-phase study EDUCATION addressing HABs management in lakes Henshaw and Wohlford.Phase I of the project focused on development of a HABs Management and Mitigation Ph.D.,Civil and Environmental Plan that considered short-and long-term alternatives for reducing HABs Engineering(Ecological Engineering), and improving water quality while maintaining maximum operational University of California at Berkeley, 2002 flexibility of the associated water system and supporting multiple beneficial uses,including tribal water rights.Phase II involved continuing analysis of M.S.,Civil and Environmental monitoring data to determine the effectiveness of short-term mitigation Engineering(Ecological Engineering), strategies(algaecides,phosphorus sequestration)and inform University of California at Berkeley, 1997 implementation of long-term prevention/minimization alternatives(source water control,oxygenation).Phase III is ongoing and is focused on a pilot B.S.,Environmental Engineering Sciences, oxygenation study. University of Florida,1995 Investigation of the Potential for Alum Treatment in Nicasio Reservoir, CA (Client:Marin Municipal Water District):Dr.Singer was lead PROFESSIONAL AFFILIATIONS water quality scientist in a study of the potential for alum treatment to -American Ecological Engineering control taste and odor problems in a drinking water reservoir in Society northern California.The study involved compilation of physical, -California Lake Management Society chemical,and biological conditions in Nicasio Reservoir relevant to phosphorus control and seasonal nuisance algae blooms,as well as SELECTED PUBLICATIONS potential aluminum toxicity and permitting issues.Dr.Singer also assisted with development of a monitoring plan to fill existing data Downs,P.W.,M.S.Singer,B.K.Orr,Z. E.Diggory,T.N.Church,and J.C. gaps related to alum treatment efficacy. Stella.2011.Restoring Ecological Nitrogen and Phosphorus Offsets due to Artificial Aeration-mixing Integrity in Highly Regulated Plus Oxygenation in Lake Elsinore, Riverside County, CA(Client: Rivers:The Role of Baseline Data and Elsinore Valley Municipal Water District):Dr.Singer is the lead for an Analytical References.Environmental ongoing,multi-year study to assess the effects of artificial aeration- Management.48:847-864. mixing(2021-2025)plus oxygenation(2025)on internal nitrogen and Stillwater Sciences Stillwater Sciences Fleming-Singer,M.S.,and A.J.Home. phosphorus loading to the lake,which offsets external loading of 2006.Balancing wildlife needs and nutrients added in recycled water to support recreation and improve nitrate removal in constructed the lake's ecology.Water quality analyses include annual and long-term wetlands:the case of the Irvine Ranch trends for water temperature,dissolved oxygen,conductivity,nutrients, Water District's San Joaquin Wildlife chlorophyll-a,phytoplankton,and zooplankton,along with operational Sanctuary.Ecological Engineering 26: 147-166. recommendations for improving water quality. Home,A.J.,and M.S.Fleming-Singer. Briones Reservoir Water Quality Study and Mokelumne Watershed 2005.Phytoremediation using Wildfire Response Plan Contra Costa County, CA(Client:East Bay constructed treatment wetlands:an Municipal Utility District(EBMUD]):Dr.Singer is serving as scientific lead overview.Pages 329-377 in M. and project manager on a multi-disciplinary team characterizing the Fingerman and R.Nagabhushanam, dynamics and water quality of Briones Reservoir and identifying cost- editors.Bioremediation of aquatic and effective capital and operational improvements to manage emerging water terrestrial ecosystems.Science quality threats,including taste and odor-causing compounds and harmful Publishers,Enfield,New Hampshire. and nuisance algal blooms.The project also involves assessing the potential Fleming-Singer,M.S.,and A.J.Home. for wildfire in the Upper Mokelumne River watershed to adversely impact 2002.Enhanced nitrate removal water quality in EBMUD reservoirs,including Briones,and determining a efficiency in wetland microcosms set of pre-fire,during-fire,and short-and long-term post-fire mitigation using an episediment layer for activities to reduce water quality risks. denitrification.Environmental Science &Technology 36:1231-1237. San Pablo Reservoir Water Quality Improvement Project(Client: EBMUD):Dr.Singer was project manager and technical lead for an evaluation of potential options for reducing algal metabolites(i.e.,geosmin, MIB)and soluble manganese production in San Pablo Reservoir.Tasks included comprehensive review and analysis of existing water quality data; development of technical materials and facilitation at multiple client workshops to identify feasible control measures,including multiple forms of hypolimnetic oxygenation,that would deliver the best benefit for the money spent;preliminary design for the preferred alternative(i.e.,Speece cone oxygenation);development of a comprehensive water quality management program to determine success of the preferred alternative;and summary of all tasks in a comprehensive final report,including management recommendations. Soulajule Reservoir Mercury Bioaccumulation Studies, Marin County, CA (Client:Marin Municipal Water District):Dr.Singer served as project manager,lead water quality scientist,and limnologist for a multi- phased water quality and limnology investigation of methylmercury production,bioaccumulation,and control in Soulajule Reservoir and the downstream Arroyo Sausal(creek),within the Walker Creek Watershed.Using the results of early data collection,Phase I focused on development of a Study Plan to determine how best to reduce methylation and bioaccumulation of mercury in Soulajule Reservoir. Phase II focused on implementation of six pilot studies including characterization of seasonal mercury cycling and bioaccumulation in the reservoir,assessment of littoral zone extent and productivity,fish community composition and food web structure,conceptual sizing of a hypolimnetic oxygenation system,and upland soil mercury contributions to the reservoir.Phase III focused on the development of the Soulajule Reservoir Management Plan,as informed by prior phases. 2 Maia Singer,Ph.D.,C.E.D. Noah Hume, P. E. , Ph. D. Aquatic Ecologist/Senior Scientist Dr. Noah Hume, P.E. (Ph.D., Civil and Environmental Engineering)has over 40 years of experience in aquatic sciences and engineering spanning ecology,water quality,water supply and treatment. Dr. Hume's areas of expertise include engineering,water quality management,wetlands ecology, limnology, and fisheries biology. Dr.Hume has led and participated in the design and implementation of riverine, wetland, and tidal habitat restoration projects from Oregon to Newport Bay, CA as well as tidal habitat restoration projects in the Sacramento-San Joaquin River Delta.Dr. Hume's technical expertise in engineering and ecology make him an efficient and effective liaison for the client, as well as a capable and articulate representative at stakeholder and public meetings. AREAS OF EXPERTISE SELECTED PROJECT EXPERIENCE • Wetlands and Aquatic Ecology Algae Monitoring and Mitigation Plan, San Francisco Bay Area, CA • Water Quality (Client:San Francisco Public Utilities Commission(SFPUCJ):Dr.Hume led • Fisheries Biology the analysis and update of an Algae Monitoring and Mitigation Plan • Civil and Environmental Engineering (AMMP)for the SFPUC peninsula,Alameda,and upcountry reservoirs. • Mechanical Engineering Following review of standard operating procedures for reservoir sampling,response triggers and measures for algal levels and taste and YEARS OF EXPERIENCE odor compounds were adjusted along with adjustments to laboratory data reporting and communications between Natural Resource and At Stillwater:26 years Water Quality Division staff. In Total:40 years Briones Reservoir Water Quality Study and Mokelumne Watershed EDUCATION Wildfire Response Plan (Client:East Bay Municipal Utility District (EBMUD]):As Project Director Dr.Hume provides senior technical Ph.D.,Civil and Environmental review as part of this multi-disciplinary team.The goal of the Plan is to Engineering,UC Berkeley,2000 characterize the dynamics and water quality of Briones Reservoir and M.S.,Civil and Environmental identify operational,capital,and watershed management improvements Engineering,UC Berkeley,1989 that will allow EBMUD to respond quickly and effectively to current B.S.,Mechanical and Ocean Engineering, and emerging water quality threats. University of Rhode Island,1985 San Pablo Reservoir Water Quality Improvement Project, El Sobrante, CA(Client:EBMUD):Dr.Hume provided senior technical LICENSURE review for an evaluation of potential options for reducing algal Professional Engineer(Civil and metabolites(i.e.,geosmin,MIB)and soluble manganese production in Mechanical),State of California San Pablo Reservoir.Tasks included comprehensive review and analysis (Licenses C45808,M28919) of existing water quality data;review of potential algae control measures;preliminary designs;monitoring plan;and a final report. SELECTED PUBLICATIONS Soulajule Reservoir Mercury Bioaccumulation Study, Walker Creek, Hume,N.,D.Riordan,D.McEwan,L. Marin County, CA(Client:Marin Municipal Water District):Dr.Hume served Chu,and S.Andrews.2016.Restoration as project director of ongoing water quality and limnology studies for approaches and planning for the investigations intended to control methyl mercury bioaccumulation and Prospect Island Tidal Habitat production in Soulajule Reservoir and downstream locations in Walker Restoration Project.Bay-Delta Science Creek.The study was carried out as part of the implementation plan for Conference 2016. the Walker Creek watershed Mercury Total Maximum Daily Load Orr,B,M.Keever,A.Merrill,N.Hume, (TMDL)and was focused on the protection of both wildlife and human J.Long,H.Green,and G.Darren.2016. consumptive resources. Restoration Design in the Sacramento- Stillwater Sciences Stillwater Sciences San Joaquin Delta-Lessons from Case Management and Mitigation of Harmful Algal Blooms in Lakes Henshaw Studies.Bay-Delta Science Conference and Wohlford, CA(Client:Vista Irrigation District and City of Escondido):Dr. 2016. Hume is serving as project director for a multi-phase study addressing Hume.,N.,G.Leverich,S.Dusterhoff, HABs management in lakes Henshaw and Wohlford in southern California. D.Pfeifer,C.McCalvin,and L.Holmes. Phase I of the project focused on development of a HABs Management and 2014.Balancing Habitat Needs for Mitigation Plan that considered short-and long-term alternatives for Rearing and Migratory Steelhead with reducing HABs and improving water quality while maintaining maximum Other Beneficial Water Uses in the operational flexibility of the associated water system and supporting Santa Clara River Estuary. 32nd multiple beneficial uses,including tribal water rights.Phase I also included a Annual Salmonid Restoration water quality management plan that allows assessment of post-project Conference,Santa Barbara,CA. success.Phase II includes continuing analysis of monitoring data to Merrill,A.,S.Siegel,B.Morris,A. determine the effectiveness of short-term mitigation strategies(algaecides, Ferguson,G.Young,C.Ingram,P. phosphorus sequestration)and inform implementation of long-term Bachand,H.Shepley,M.Singer,N. prevention/minimization alternatives selected during Phase I(source water Hume.2010.Greenhouse Gas control,oxygenation). Reduction and Environmental Benefits in the Sacramento-San Joaquin Delta: Independent Review of Lake Elsinore Advanced Pumped Storage Advancing Carbon Capture Wetland Project, Lake Elsinore, Riverside County, CA (Client: City of Lake Farms and Exploring Potential for Low Elsinore,as a subconsultant to Leibold McClendon&Mann):Dr.Hume led a Carbon Agriculture.Prepared for the focused review of a three dimensional(3D)water quality modeling Nature Conservancy,Sacramento, study that was implemented in support of a proposed Lake Elsinore California. Advanced Pumped Storage(LEAPS)hydroelectric project at Lake Hume,N.,M.Fleming,and A.Home Elsinore.Dr.Hume examined modeling assumptions and modeling 2002.Denitrification potential and results to examine the transient impacts of water supplementation from carbon quality of four aquatic plants in the State Water Project,as well as long term operations upon DO wetland microcosms.Soil Science conditions,chlorophyll-a and microcystin levels in the shallow lake.The Society of America Journal 66:1706- review identified additional model documentation needs and validation 1712. needs to allow the model to examine water quality conditions under Hume,N.,M.Fleming,and A.Home LEAPS operations scenarios. 2002.Plant carbohydrate limitation on Don Pedro Reservoir Mercury Bioaccumulation Study, Tuolumne River, nitrate reduction in wetland CA(Client:Turlock and Modesto Irrigation Districts):Dr.Hume served as lead microcosms.Water Research 36:577- scientist in a mercury bioaccumulation study of the Tuolumne River.In 584 response to State 303(d)listing of Don Pedro reservoir for mercury impairment,the study compared water quality and fish tissue concentrations in regional waterbodies to conditions upstream,within and downstream of the reservoir. Lexington Reservoir Intake Feasibility Study, San Jose, CA (Client: San Jose Water,as a subconsultant to Kennedy Jenks):To develop potential raw water intake alternatives for the Montevina WTP,Dr.Hume analyzed historical water quality profiles in Lexington Reservoir to examine thermal stratification patterns under a range of reservoir storage levels,including minimum storage requirements required under Fish and Aquatic Habitat Collaborative Effort(FAHCE).To optimize raw water quality at lower algal densities while preserving cold water poll storage,the study recommended water withdrawals from the reservoir surface waters using a novel floating intake structure. 2 Noah Hume,P.E.,Ph.D. Naivy Rodal-Morales, Ph. D. Environmental Engineer Dr. Naivy Rodal-Morales (Ph.D., Environmental Systems-Environmental Engineering) works on water quality and remediation techniques in lakes and wetlands, and mercury biogeochemistry. She has actively participated in applied water and soil research projects centered around limnology, lake management, and mercury remediation.Dr. Rodal-Morales' experience includes analyzing and interpreting nutrients and metals cycling,modelling pollutant removal in wetlands,nutrients accumulation and mass transport. AREAS OF EXPERTISE SELECTED PROJECT EXPERIENCE • Water Quality Indian Creek Reservoir Sediment Phosphorus Investigation, CA • Mercury Biogeochemistry (Client South Tahoe Public Utilities District)Dr.Rodal-Morales • Limnology/Reservoir Management contributed to the selection,dosage determination,and report writing • Environmental Engineering of three sediments amendments for phosphorus control and collected • Treatment Wetlands sediment and water samples from Indian Creek Reservoir for • Water Quality Fieldwork following amendment testing. Calabazas/San Tomas Aquino Creek-Marsh Connection, San Jose, YEARS OF EXPERIENCE CA(Client:Santa Clara Valley Water District[Valley Water]):Dr.Rodal- At Stillwater:2 years Morales is supporting with the data analysis,interpretation and In Total:7 years synthesis report writing of the mercury(water,sediment,biota),in- situ water quality including water temperature,dissolved oxygen,pH, EDUCATION ORP,turbidity,and suspended sediment data in the San Jose salt ponds and tributaries.This is part of the pre-restoration activities Ph.D.,Environmental Systems, after two years of monitoring to understand baseline conditions. Environmental Engineering concentration, UC Merced,2024 Delilah Final Design and Permitting, CA(Client Smith River Alliance): M.S.,Environmental Systems,UC Dr.Rodal-Morales supports in the analysis of available water and Merced,2023 sediment data to provide a high-level summary of the contaminant B.S., Geological Engineering, National pathways and recommendations for permitting. Autonomous University of Mexico Lake Elsinore Offset Calculations, CA(Client Elsinore Valley Municipal (UNAM),2019 Water District):Dr.Rodal-Morales supports in the analysis, PUBLICATIONS interpretation,and report writing on water quality and nutrient offset calculations for Lake Elsinore to meet TMDL. Rodal-Morales,N.D.,Le,A.K.,Beutel, M.W.,O'Day,P.A.,Fleck,J.A.,Hansen, Calero Dam Seismic Retrofit Project Fisheries and Water Quality A.M.,Oros,D.M.,Agee,J.L.,Bonham, Support, CA(Client Valley Water):Dr.Rodal-Morales supports in the B.G.,Sanford,C.E.,Kakouros,E.,Kieu, analysis,interpretation,and report writing on water quality chapter L.,Marvin-DiPasquale,M.C.,and of the Environmental Impact Report with emphasis on the reservoir Alpers,C.N.,2025,Mercury, water quality and mercury analysis. methylmercury,and related geochemical data from incubations of Applicability of San Pablo Reservoir in Soulajule Reservoir for materials flocculated in mesocosms Mercury Bioaccumulation, Marin County, CA(Client:Marin Municipal within the Cache Creek Settling Water District):Dr.Rodal-Morales supports in the analysis, Basin,California:U.S.Geological interpretation, and report writing on the investigation of Survey data release. methylmercury bioaccumulation and production in Soulajule Rodal-Morales,N.D.,Beutel,M., Reservoir and downstream locations within the Walker Creek Fuhrmann,B.,Defeo,S.,Hansen,A.M., Stillwater Sciences Stillwater Sciences Harmon,T.,Brower,S.,&Pasek,J. Watershed,Marin County, comparing San Pablo Reservoir data as a (2024).Hydrology and oxygen baseline for Soulajule's nutrients and mercury behavior. addition drive nutrients,metals,and methylmercury cycling in a Briones Reservoir Water Quality Study and Mokelumne Watershed hypereutrophic water supply Wildfire Response Plan Contra Costa County, CA(Client:East Bay reservoir.Frontiers in Water,6,1356994. Municipal Utility District[EBMUD]):Dr.Rodal-Morales is part of the Defeo,S.,Beutel,M.,Rodal Morales, multi-disciplinary team characterizing the dynamics and water quality of N.D.,Singer,M.(2024).Sediment Briones Reservoir and identifying cost-effective operational and capital release of nutrients and metals from improvements to manage emerging water quality threats.The project also two contrasting eutrophic California involves assessing the potential for wildfire in the Upper Mokelumne reservoirs under oxic,hypoxic and River watershed to adversely impact water quality and determining a set anoxic conditions.Frontiers in Water,6, of pre-fire,during-fire,and short-and long-term post-fire mitigation 1474057. activities to reduce water quality risks in multiple EBMUD reservoirs, including Briones.Specifically,Dr.Rodal-Morales is working on the data PROFESSIONAL AFFILIATIONS analysis and report writing to identify the best water quality solution. • American Ecological Engineering San Pablo Reservoir Pre-oxygenation Mercury Baseline Conditions Society(AEES) and Cycling, CA(Client:San Francisco Regional Water Quality Control Board, • Association of Women in Water, EBMUD,Marin Municipal Water District):Dr.Rodal-Morales contributed Energy and Environment(AWWEE) to the review and analysis of two years of multi-season baseline water • California Lake Management Society quality data including water temperature,dissolved oxygen,pH,ORP, (CALMS) turbidity,nutrients,total organic carbon,total suspended solids, • Geological Society of America(GSA) chlorophyll-a,algae species,and methyl and total mercury in water, • North American Lake Management algae,zooplankton,prey fish,and sport fish.All data were presented in a Society(NALMS) comprehensive final report,including adaptive management monitoring recommendations. SELECTED PRESENTATIONS UKB Wetland Restoration Pilot Study Conceptual Design and Work Rodal-Morales,N.and Singer M., Plan, CA(Clients: Trout Unlimited, California Coastal Conservancy,and Martinez G.,Looker R.,Allan M.,Hunt, California State Water Resources Control Board):Dr.Rodal-Morales is C.,Johannesson C.,Kawakami B., working on the team which is coordinating with USACE regarding Work L.,Teefy S.2025.Key for Management of Mercury potential permitting requirements and pre-application questions and Bioaccumulation in a Northern on the consideration of different wetland cell sizing to address California Reservoir.California Lake potential permitting constraints for the wetland restoration pilot Management Society(CALMS),San study. Diego. Research Project, Hodges Reservoir, San Diego, CA*(Agency: Rodal-Morales N.,Beutel M., University of California,Merced):Dr.Rodal-Morales performed multi- Fuhrmann B.,Defeo S.,Hansen A.M., year evaluation of nutrient,metals,and mercury cycling in water Harmon T.,Brower S.,Pasek J.2024. column before and after reservoir oxygenation in collaboration with Hydrology and Oxygen Addition the City of San Diego.Research was published in Frontiers in Water, Drive Nutrients,Metals,and Water Quality in May 2024. Methylmercury Cycling in a Hypertrophic Reservoir.North Research Project,Wetland Newman, CA*(Agency: University of American Lake Management Society, California,Merced):Dr.Rodal-Morales modeled nitrate and phosphate California Lake Management Society. removal using the P-k-C*model in constructed treatment wetlands Winner of the Jody Connor Student Award for best presentation treating agricultural runoff for the City of Newman.She is preparing this information to be published in a peer-reviewed journal. *Denotes project completed prior to joining Stillwater Sciences. 2 Naivy Rodal-Morales,Ph.D. LakeTech Eli Kersh President at La keTech, inc. San Francisco Bay Area Eli is a Certified Lake Ma na ger, President of the California Lake Management Society, and a licensed Agricultural Pest Control Adviser in California. He received his undergraduate degree from UC Santa Barbara in 2007 where he majored in Geographic Information Science. He returned to graduate school At CSU East Bay in 2011to obtain a masters degree in Lim nology with an em phasis in Lake Ma na gem ent. He com pleted his university thesis focused on the Eutrophication of Lakes and Vegetation Management in 2013. Eli is the founder ofLakeTech, a one- of-a- kind monitoring, data management, and limnological consulting firm that specializes in obtaining and utilizing actionable data to solve water quality problems and restore degraded aquatic ecosystems. Eli has implemented real-time monitoring systems in hundreds of lakes a round the world and restored water quality in dozens of water bodies. He is a n expert in the installation of oxygenation systems, sustainable pest m a na gem ent,the application of phosphorus binding technology, a nd the a cquisition of informative water quality data. Experience La keTech, inc. President September 2016 - Present La keTech, inc. (formerly e Lim nology, inc) is a n Aquatic Resource Ma nagem ent & Consulting firm in Ca lifornia. We rely on proven strategies, technology, a nd products to develop and implement proactive and sustainable management approaches for lakes and ponds. Alliga re LLC Field Operations Manager January 2018 - February 2021 (3 years 2 months) California PCAspecializing in aquatic vegetation and algae control. Also serving AZ, NV, UT and OR,WA west of the Cascades Aquatic Environments, inc Environmental Services Manager December 2013 - January 2018 (4 years 2 months) Aquatic Environments Inc, (AEI) is California's la rgest full-service general contractor and consultancy in the rapidly growing fields of wetland restoration, water feature construction, and aquatic maintenance services. Lakelech College of Alameda Adjunct Instructor January 2014 - December 2014 ( 1year) January 2013 - January 2014 ( 1year 1month) Taught night classes in physical geography. Received great feedback from my students and colleagues. California State University - East Bay Teaching Assistant January 2013 - January 2014 ( 1year 1month) Assisting professors in the Environm enta I Studies / Geography Depa rtm ent: lab instruction and test proctoring, reading and gra ding pa pers,equipm ent training in the field. Education California State University - East Bay MA, Geographic Information Science and Cartography • (2011- 2013) UC Santa Barbara Bachelor's degree, Geographic Information Science and Cartography • (2004 - 2007) Profess iona I Certifications Certified Lake Manager (CLM) North American Lake Management Society (2016 — Current) Licensed Pest Control Advisor California Department of Pesticide Regulation (2014 — Current) Professional Leadership President California Lake Management Society (2017, 2018, 2024) Region 9 Director North American Lake Management Society (2020 — 2022) Byran Fuhrmann, PhD, MBA Principle Scientist at LakeTech, Inc. 1-213-846-6306 data@laketech.com PROFESSIONAL EXPERIENCE LakeTech • Principal Scientist 2026—Present Clean Water Help (501(c)3 Public Charity) • Executive Director 2024—Present SePRO Corporation • Aquatic Technology Development Scientist 2020—2025 o EutroPHIX Division Technical Project Lead o SePRO Water Quality Product Development Lead Researcher University of California,Merced • Instructor,Field Methods of Environmental Chemistry 2019—2020 • Lab Instructor: Environmental Chemistry 2019 North Coast Laboratories,Arcata,CA • Quality Assurance Manager 2015—2016 • Quality Assurance Assistant 2014—2015 PROFESSIONAL LEADERSHIP California Lake Management Society(CALMS) • President 2023; 2025—Present • President-Elect 2022; 2024 • Northern California Director 2017—2021 North American Lake Management Society(NALMS) • Conference Program Committee Member 2023—Present American Water Works Association(AWWA) • Source Water Protection Committee Member 2020—Present EDUCATION Environmental Systems,Ph.D. 2020 • University of California,Merced Environmental Engineering Sciences,M.S. 2016 • University of Florida Master of Business Administration(MBA) 2015 • Humboldt State University Chemistry,B.S. 2014 • Humboldt State University PROFESSIONAL CERTIFICATIONS Certified Lake Manager 2023 North American Lake Management Society(NALMS) PATENTS Methods of production and use of rare earth enhanced coagulants. 2025 • US Application: 63/639,677;US20250333346A1 Aquatic dye and coagulant combination product to improve the longevity of 2025 water quality enhancements. • US Application: 19/055,470;US20250270122A1 Methods and compositions of an iron-coated lanthanum compound for 2024 remediation of contaminated sediments. • US Application: 18/884,019; (Non-publication request) Methods and systems of analysis of phosphorus release and management 2024 in a body of water. • US Application: 18/764,671;US20250012774A1 Use of trivalent metals to enhance aquatic pesticide efficacy, surface water, 2023 and sediment quality while minimizing risk to aquatic biota. • US Application: 18/304,032;US20230339787A1 • Granted February 17,2025 Methods and compositions of a liquid controlled-release pesticide for targeted 2023 delivery and drift reduction. • US Application: 18/223,632;US20240041046A1 Compositions and systems for binding nutrients from moving bodies of water. 2022 US Application: 12,134,083.US 12134083B2 • Granted November 5,2024 • 2 Patent Citations: CN118851427B and US20210130251A1 SELECT PUBLICATIONS & BOOK CHAPTERS Fuhrmann, B.,Willis, B.,Barkley, C., Shuler, S., Scott,J.,Van Goethem,R., (In Prep). Geography of phosphorus in lake sediments in the US: Insights from more than 100 lakes. Easley,R.,Fuhrmann, B.,Price,K, Long, S., Swan,K. (In Review). Water Quality and Source Water Protection. In M50 Water Resources Planning. Fourth Edition.American Water Works Association. Fuhrmann,B.,Fortier,M-O.,Beutel,M., Teefy, S.,Horne,A.,Mobley,M. (In Prep). Economic analysis and life cycle assessment of hypolimnetic oxygenation of Upper San Leandro Reservoir,California. Rodal-Morales,N.D.,Beutel,M.,Fuhrmann,B.,Defeo, S., Hansen,A.,Brower, S.,Pasek,J. (2024). Hydrology and Oxygen Addition Drive Nutrient,Metals, and Methylmercury Cycling in a Hypereutrophic Water Supply Reservoir. Front.Water,Environmental Water Quality. Fuhrmann,B.,Beutel,M.,Ganguli,P.,Zhao,L.,Brower, S.,Funk,A.,Pasek,J. (2021). Seasonal patterns of methylmercury production,release,and degradation in profundal sediment of a hyper-eutrophic reservoir.Lake and Reservoir Management, 37(4), 360-377. Fuhrmann,B.,Beutel,M.,O'Day,P., Tran, C.,Funk,A.,Brower, S.,Pasek, J., Seelos,M. (2021). Effects of mercury, organic carbon,and microbial inhibition on methylmercury cycling at the profundal sediment-water interface of a sulfate-rich hypereutrophic reservoir.Environmental Pollution,268, 115853. Beutel, M., Garcia-Gallardo, T.,Falcon-Rojas,A.,Fuhrmann,B.,Hansen,A. (2018).Use of oxygenation to repress release of redox-sensitive compounds from profundal sediment in the valle de bravo reservoir,Mexico.International Journal of Environmental Pollution,34(6), 17-20. 2025 CONFERENCE PRESENTATIONS • Advances in Sediment Phosphorus Geochemistry.North American Lake Management Society. • Lake Chemistry Do's and Don'ts.North American Lake Management Society. • Regional and International Lake Management Differences from a Nomad's Perspective.North American Lake Management Society. • Iron-coated Lanthanum: A new material for sediment phosphorus management.North American Lake Management Society. • Sediment Phosphorus Analysis for Improved Lake Management. California Lake Management Society. San Diego, CA. • The Management of Taste and Odor Compounds and Cyanotoxins in Lakes and Reservoirs. California Lake Management Society. San Diego, CA. • Avoiding Analysis Paralysis and Getting the Highest Return on Investment with Adaptive Lake Management. 20th World Lake Conference. Brisbane,Australia. Marc W.Beutel,Ph.D.,P.E. Water Quality Engineering Consultant Professor,Civil and Environmental Engineering Department University of California,Merced 209 228 2229 beutelwaterqualityengineering@gmail.com EDUCATION • Ph.D.,University of California,Berkeley,Civil and Environmental Engineering,2000 • M.S.,University of California,Berkeley, Civil and Environmental Engineering, 1994 • B.S.,University of California,Los Angeles, Cum Laude,Civil Engineering, 1990 EXPERIENCE • 2022-Present,Chair,Department of Civil and Environmental Engineering,UC Merced • 2020-Present,Professor,Department of Civil and Environmental Engineering,UC Merced • 2015-2020,Associate Professor, School of Engineering,University of California,Merced • 2011-2015,Associate Professor,Department of Civil and Environmental Engineering,Washington State University • 2004-2011,Assistant Professor,Department of Civil and Environmental Engineering,Washington State University • 2001-2004,Principal Water Resources Engineer,Brown and Caldwell,Walnut Creek, CA • 2000-2001,Post-Doctoral Researcher,Kastanienbaum Limnological Research Center, Switzerland • 1990-1993,Junior/Assistant Engineer,East Bay Municipal Utility District, Oakland,CA WORK ACTIVITIES Topical Focus Sustainable control of dilute pollutants in managed surface waters including nutrients,pesticides,pathogens and metals, with a focus on redox mediated transformations at the sediment-water interface. Focus areas include: (1)mercury cycling in aquatic ecosystems; (2)reservoir oxygen addition to repress internal loading of nutrients and metals; (3)use of activated carbon-based sorbents to remediate mercury- contaminated sediments; (4)use of drones to sense methane and mercury in the environment; (5)pollutant removal in constructed treatment wetlands; (5) control of harmful algal blooms in surface waters. Select Activities CA Department of Water Resources,2025-2028. $990,000,Beutel(PI).Assessing Effects of Dredging on Sediment Processes and cyanoHABs in the Sacramento-San Joaquin Delta City of Newman, CA. 2019-2026, $180,000. Beutel(PI).Design and Monitoring of Natural Treatment System to Treat Stormwater and Agricultural Runoff Stillwater Sciences, Berkeley, CA and South Lake Tahoe Public Utility District,2025. Controlling phosphorus release from profundal sediment of Indian Creek Reservoir, CA. Santa Clara Valley Water District, 2024-25. $75,000. Beutel(PI), O'Day(Co-PI).Evaluation of Sorbents and Application Methods for Hg Remediation in Mine-Contaminated Surface Waters, Follow-Up Amendment Stillwater Sciences,Berkeley, CA and East Bay Municipal Utility District,2024.Assessing Sediment Oxygen Demand in Briones, CA. Santa Clara Valley Water District,2022-24. $243,537. Beutel(PI)and O'Day(Co-PI).Evaluation of Sorbents and Application Methods for Hg Remediation in Mine-Contaminated Surface Waters F.X. Brown/Bogia Engineering and Batta Environmental, 2023-24.Assessing sediment nutrient fluxes and sediment oxygen demand in Manasquan Reservoir, NJ. F.X. Brown/Bogia Engineering and Batta Environmental, 2021-22.Support for preliminary design assessment of a hypolimnetic oxygenation system for Valle de Bravo Reservoir, Mexico. 1 Metropolitan Water District of Southern California,2021. $13,500. Beutel/UC Merced Environmental Analytical Laboratory.Experimental and Analytical Support for Lake Skinner Sediment Nutrient Release and Oxygen Demand Study Stillwater Sciences, City of Escondido, and Vista Irrigation District, 2021. $71,000. Beutel(PI).Lake Henshaw and Lake Wohlford Sediment Study San Diego Public Utility District/San Diego County Water Authority, 2016-2021. $338,209. Beutel(PI). Water Quality Monitoring Support and Assessment of Oxygen Addition at Hodges Reservoir Select Publications Rodal Morales,N.D., Beutel, M.W., O'Day, P., Fleck, J.A., Marvin-DiPasquale, M.C.,Alpers, C.N., Transient methylmercury formation during wetland soil rewetting is governed by organic matter availability rather than coagulant history. In review Environmental Science:Processes and Impacts. Lopez Barreto Martinez,B.N.,Hestir,E.L.,Beutel,M.W., Lee, C.M., 2026. Statewide intensification of harmful algal blooms across California lakes and reservoirs. GeoHealth 10(4),p.e2025GH001627. Defeo, S., Beutel, M.W., Rodal-Morales, N., Singer, M., 2024. Sediment release of nutrients and metals from two contrasting eutrophic California reservoirs under oxic, hypoxic and anoxic conditions. Frontiers in Water 6, 1474057. Rodal-Morales,N.D.,Beutel, M.W., Fuhrmann,B.,Defeo, S., Hansen,A.M.,Harmon,T.,Brower, S., Pasek, J., 2024. Hydrology and oxygen addition drive nutrients,metals, and methylmercury cycling in a hypereutrophic water supply reservoir.Frontiers in Water 6, 1356994. Horne,A., Beutel,M.W.,Woodside, G., 2024. The Prado Wetlands: 24 years of river diversion treatment wetlands reducing nitrate and phosphate while increasing an endangered bird.Ecological Engineering 200, 107174. Seelos, M.,Beutel,M.W.,McCord, S.,Kim, S.,Vigil, K.,2022 (December). Plankton population dynamics and methylmercury bioaccumulation in the pelagic food web of mine-impacted surface water reservoirs. Hydrobiologia 849 (21),4803-4822. Seelos, M.,Beutel,M.W.,Austin, C.M.,Wilkinson,E., Leal, C., 2021. Effects of hypolimnetic oxygenation on fish tissue mercury in reservoirs near the new Almaden Mining District,California, USA. Environmental Pollution 268, 115759. Fuhrmann, B.C., Beutel,M.W., Ganguli,P.,Zhao,L.,Brower, S.,Funk,A.,Pasek,J.,2021. Seasonal patterns of methylmercury production,release, and degradation in profundal sediment of a hypereutrophic reservoir.Lake and Reservoir Management 37, 360-377. Beutel, M.W., Fuhrmann, B.C., Herbon, G., Chow,A., Brower, S., Pasek,J.,2020. Cycling of methylmercury and other redox-sensitive compounds in the profundal zone of a hypereutrophic water supply reservoir.Hydrobiologia 847, 4425-4446. Horne,A.J., Beutel,M.W.,2019. Hypolimnetic Oxygenation 3. An engineered switch from eutrophic to a meso/oligo-trophic state in a Californian reservoir.Lake and Reservoir Management 35, 338-353. Horne,A.J.,Jung,R.,Lai,H.,Faisst,B.,Beutel,M.W.,2019. Hypolimnetic Oxygenation 2. Oxygen dynamics in a large reservoir with submerged down-flow contact oxygenation(Speece Cone).Lake and Reservoir Management 35, 323-337.53. Beutel,M.W., S.R. Dent,R.L.Newcombe, G. Moller,2019 (February). Mercury removal from municipal secondary effluent with hydrous ferric oxide reactive filtration. Water Environment Research 91, 132- 143.52. Beutel, M.W.,A.J. Horne,2018.Nutrient fluxes from profundal sediment of ultra-oligotrophic Lake Tahoe, California/Nevada: Implications for water quality and management in a changing climate. Water Resources Research 54, 1549-1559.51. Licenses Professional Civil Engineer, California, C65783 2 APPENDIX B Sample Work Products • Algal Bloom Analysis —Comprehensive Assessment of Spatial and Temporal Bloom Dynamics Using - 10 years of Satellite and Weather Data (LakeTech) • Water Quality Management Plan for the General National Pollutant Discharge Elimination System (NPDES) Permit for the Discharge of Lanthanum-modified Clay to Surface Waters of the United States in the San Diego Region (Stillwater Sciences) Lake of the Pines Algae Bloom Analysis S La keT v ■ ■ Lake of the Pines Algae Bloom Analysis Comprehensive Assessment of Spatial and Temporal Bloom Dynamics Using —10 years of Satellite and Weather Data Prepared by Eli Kersh, CLM Byran Fuhrmann, PhD, MBA, CLM LakeTech January 2026 Page 1 Lake of the Pines Algae Bloom Analysis PART 1 Executive Summary Core Finding Lake of the Pines operates as two fundamentally different systems with distinct bloom mechanisms. The main lake body experiences summer blooms driven by internal nutrient loading during thermal stratification, while the NE Cove experiences winter/spring blooms driven by external nutrient inputs from precipitation. These contrasting patterns require zone-specific management approaches to optimize water quality. A simple monitoring program can highlight opportunities for cost-effective water quality improvements. The Two-Zone System Main Lake Body: Algae blooms peak in summer (June-October) with strong positive correlation to temperature and negative correlation to precipitation. The mechanism involves thermal stratification creating anoxic bottom waters, phosphorus release from sediments, and partial mixing events (9-23°F cooling periods) that deliver nutrients to surface waters. Northeast (NE) Cove (10 ft depth): This area of the lake has the highest algae abundance. Algae blooms peak in winter/spring (November-April) with inverse patterns—negative correlation to temperature and positive correlation to precipitation. The mechanism involves nitrogen limitation during summer months and nitrogen delivery from rainfall during cooler periods when denitrification rates are reduced. Key Statistics Metric Value Study Period March 2016—October 2025 (9.5 years) Total Satellite Data Points 2,928 (366 events x 8 sites) Total Weather Data Points 3,507 days (average temp & daily rainfall) Lake-wide Mean TSI 44.8 (Mesotrophic) NE Cove Mean TSI 50.5 (Eutrophic boundary) NE Cove Bloom Frequency 45.4% of observations (TSI >_ 50) Main Lake Bloom Frequency —28% of observations (average across sites) Page 2 Lake of the Pines Algae Bloom Analysis Recommended Monitoring Program Monthly sampling at 5 locations: • 1 water sample (Mid-depth) at green dots • 2 water samples (Surface water and bottom water) at purple dots • Therefore, 7 total samples The following samples (Bend Genetics Pricing): • Total Phosphorus = $40 • Total Nitrogen = $40 • Total Ammonia = $40 • Total Nitrate = $40 • $160/sample x 7 = $1,120/event Additional (free) analyses: • Chlorophyll (algae abundance) can be monitored with satellite imagery • Secchi disk depth • Sonde profile (if multiparameter sensor is owned) • Notes on any algae or water turbidity • Notes on differences between sites (algae at one site only, turbid in one area, etc) • Notes on any observed aquatic plants • Monitor LakeTech data (low DO, high temperature, turbidity, etc) Potential Future Analysis: • Sediment characteristics (free if you have a dredge—take pictures and LakeTech can interpret) • Sediment organic matter and solids content (^'$100/sample—3 to 5 samples recommended) • Sediment phosphorus (not recommended right now, but potentially in 2027) II/ r.: _ • Page 3 Lake of the Pines Algae Bloom Analysis PART 2 Lake Dynamics Overview Understanding Lake of the Pines Lake of the Pines is a reservoir with eight monitoring sites spanning depths from 10 to 55 feet. Analysis of 366 sampling events from March 2016 through October 2025 reveals a lake that functions as two distinct systems with fundamentally different mechanisms controlling algae growth. The Spatial Story: A Lake of Two Halves The most striking finding from nearly a decade of monitoring is that the NE Cove behaves completely differently from the rest of the lake. While the seven sites in the main lake body show synchronized patterns—all rising and falling together—the NE Cove operates on its own rhythm, often exhibiting the opposite behavior. Main Lake Body Characteristics The main lake body includes seven sites: West (55 ft), NW (40 ft), North (30 ft), Mid (35 ft), Midsouth (30 ft), South (20 ft), and East Cove (10 ft). Within this zone, there is a consistent north-south gradient, with the southern portion (Mid, Midsouth, South, East Cove) showing higher algae abundance than the northern portion (NW, North, West). The South and East Cove sites show the highest values, with algae bloom frequencies of 33.9% and 39.1% respectively. This spatial pattern—where all main lake sites respond synchronously—suggests either a single biochemical process affecting the entire water body, or that blooms initiate in the southern areas and spread throughout the main body. Prevailing northwest winds could explain dispersal from southern initiation points. NE Cove: The Exception The NE Cove (10 ft depth) stands apart with remarkably different behavior. It has the highest overall mean TSI of 50.5 and the highest bloom frequency at 45.4%—nearly double the main lake average. Most notably, its blooms occur at opposite times of year compared to the main lake. When the main body is experiencing summer blooms, the NE Cove remains relatively clear. When the main body is clear in winter, the NE Cove experiences its most severe blooms. For reference, a TSI < 40 indicated oligotrophic (great water quality), TSI 40-50 indicates mesotrophic (good water quality), TSI 50-70 indicates eutrophic (bad water quality), and TSI >70 indicates hypereutrophic (very bad water quality). Page 4 Lake of the Pines Algae Bloom Analysis The Temporal Story: Seasonal Reversal Main Lake Body: Summer Dominance The main lake body shows classic summer-stratification-driven bloom patterns. Monthly TSI averages for the lake show peaks in June (50.0) and a secondary peak in November (49.8). During summer, the southern portion of the lake experiences the highest algae abundance while the northern areas show moderate levels. Spring (February-April) consistently shows the best water quality of the year. NE Cove: Winter Dominance The NE Cove exhibits a completely inverted pattern. During summer (June-September), the NE Cove averages TSI of 46.6—similar to the main lake. But during winter and spring (November- April), the NE Cove averages TSI of 58.1 while the main lake body averages only 40.9. This is a dramatic 17-point difference, representing a shift from mesotrophic to moderately eutrophic conditions. Environmental Drivers Temperature The average daily temperatures ranged from 32°F to 95°F over the monitoring period, with an average of 61°F. The main lake body shows strong positive correlation between temperature and algae abundance—higher temperatures correlate with more blooms. The NE Cove shows negative correlation—blooms are more frequent and severe during cooler periods. Precipitation Precipitation patterns reveal a critical distinction between the two zones. The main lake body shows negative correlation with rainfall—dilution effects and reduced internal loading during wet periods suppress blooms. The NE Cove shows positive correlation—rainfall-delivered nutrients, particularly nitrogen, appear to stimulate algae growth. The 14-day prior rainfall is the best predictor of NE Cove bloom intensity. Thermal Events: The Cooling Signature Analysis of cooling events provides insight into bloom mechanisms. Main lake blooms (TSI > 50) between June 1 and October 1 typically show a 7-day maximum cooling of 5-13°C (9-23°F) in the prior 30 days. This cooling signature is consistent with partial mixing events that disrupt stratification and deliver nutrient-rich bottom water to the surface. Occasional large blooms in late October to early December show similar cooling patterns, indicating fall turnover can also trigger blooms, though less frequently than summer partial mixing events. Page 5 Lake of the Pines Algae Bloom Analysis Understanding the Mechanisms Main Lake: The Internal Loading Story The main lake body operates under a classic internal loading regime. During summer, thermal stratification develops with warm surface waters and cooler bottom waters. The deeper waters become isolated from atmospheric oxygen exchange, leading to anoxic conditions at the sediment-water interface. Under anoxia, phosphorus bound in sediments is released into the water column. When brief cooling events occur (5-13°C or 9-23°F drops over 7 days), partial mixing brings this phosphorus-rich bottom water into the sunlit surface layer where algae can utilize it. The combination of warm temperatures, high light availability, and this phosphorus pulse creates ideal conditions for rapid algae growth. However, the very large volume of water in the main body of the lake allows for dilution and provides some protection from what a larger bloom would be if the lake was shallower. In the future, the LakeTech system could be fine-tuned to predict algae blooms in the main body, using water and weather data to predict and verify partial mixing events. NE Cove: The Nitrogen Limitation Story The NE Cove operates under fundamentally different constraints. At only 10 feet deep, this area likely has abundant light penetration and warm temperatures throughout the summer that would normally support algae growth. The suppression of summer blooms despite favorable conditions suggests nitrogen limitation is controlling productivity. During summer, rapid nutrient cycling in the warm, shallow water depletes available nitrogen. Enhanced denitrification in warm sediments further removes nitrogen from the system. When rainfall delivers nitrate from atmospheric deposition and watershed runoff during cooler months, this limitation is relieved. Cooler temperatures also reduce denitrification rates, allowing nitrate to persist longer and support algae growth. This area of the lake is unlikely to be phosphorus-limited, as high growth during the winter (when phosphorus is most limited) is observed. This area of the lake is also likely disconnected from the rest of the lake, as high algae growth would not be possible if the water in the NE Cove could easily exchange with the large volume in the main body. A future opportunity to reduce winter-time blooms in the NE Cove might be winter aeration or circulation. Page 6 Lake of the Pines Algae Bloom Analysis PART 3 Technical Analysis Detailed Statistical Analysis Trophic Status Index Distribution The Trophic Status Index (TSI) based on chlorophyll-a provides a standardized measure of algae abundance. TSI values below 40 indicate oligotrophic (low productivity) conditions, 40-50 indicate mesotrophic (moderate productivity), and above 50 indicate eutrophic (high productivity) conditions. Site-Specific Statistics Mean TSI values across the eight monitoring sites range from 42.3 (North) to 50.5 (NE Cove). Standard deviations are highest at NE Cove (14.9) and East Cove (10.3), indicating these shallow areas experience the greatest variability. Maximum recorded TSI values of 86.4 occurred at three sites (NE Cove, East Cove, and South), representing hypereutrophic bloom conditions. The northern sites (North, NW, West) cluster tightly with mean TSI values of 42.3-43.5 and bloom frequencies of 21.6-28.7%. The southern sites (Mid, Midsouth, South, East Cove) show higher means of 43.9-45.8 and bloom frequencies of 30.6-39.1%. This 7-12 percentage point difference in bloom frequency between north and south represents a meaningful spatial gradient within the main lake body. Correlation Analysis Temperature-TSI Relationships The 14-day average temperature provides the strongest correlation with TSI in the main lake body. This lag period reflects the time required for algae populations to respond to favorable conditions following nutrient pulses. The positive correlation (blooms increase with temperature) is consistent with phosphorus-limited systems where warm temperatures enhance both internal loading rates and algae growth rates. The NE Cove's negative correlation with temperature appears paradoxical until nitrogen limitation is considered. In nitrogen-limited systems, warm temperatures accelerate denitrification losses while not proportionally increasing nitrogen inputs. The inverse relationship reflects nitrogen supply dynamics rather than direct temperature effects on algae physiology. Precipitation-TSI Relationships Precipitation correlations differ markedly between zones. Main lake negative correlation suggests internal nutrient sources dominate—rainfall dilutes the system rather than adding Page 7 Lake of the Pines Algae Bloom Analysis limiting nutrients. NE Cove positive correlation indicates external loading significance—the shallow cove's watershed delivers nutrients (likely nitrate) that relieve limitation. Thermal Stratification and Mixing Dynamics The Partial Mixing Hypothesis Analysis of cooling events preceding main lake blooms reveals a consistent pattern. Blooms (TSI >_ 50) during the stratified period (June 1 - October 1) are associated with 5-13°C maximum 7- day cooling events in the prior 30 days. This cooling range is sufficient to destabilize but not completely break down stratification—a partial mixing event. The proposed mechanism operates as follows: Summer stratification develops with a warm epilimnion (surface layer) and cooler hypolimnion (bottom layer). The hypolimnion becomes isolated from oxygen replenishment and develops anoxic conditions. Under anoxia, iron-bound phosphorus in sediments is reduced and released into the water column, accumulating in the hypolimnion. When a cooling event occurs (cold front passage, storm systems), the thermocline destabilizes sufficiently to mix some phosphorus-rich hypolimnetic water into the euphotic zone. This phosphorus pulse, combined with warm temperatures and high summer light, triggers rapid algae growth. The cooling is insufficient for complete turnover, so stratification re-establishes, potentially allowing the cycle to repeat. Fall Turnover Events A secondary bloom pattern occurs in late October through early December (days 305-335), also showing 5-13°C cooling signatures. These represent fall turnover events where the entire water column mixes. While this releases all accumulated sediment phosphorus, cooler temperatures limit bloom magnitude compared to summer events. This pattern is less frequent than summer partial mixing blooms. NE Cove Nitrogen Dynamics Evidence for Nitrogen Limitation The NE Cove's behavior strongly suggests nitrogen limitation. Several lines of evidence support this hypothesis. First, summer suppression despite favorable conditions:TSI averaging 46.6 in summer despite warm temperatures, high light penetration in shallow water, and presumably adequate phosphorus from sediment recycling indicates a limiting factor other than phosphorus or temperature. Second, rainfall correlation suggests nitrate delivery. Atmospheric deposition and watershed runoff during rain events deliver nitrate to the cove. The 14-day lag in correlation reflects both transport time and biological response time. Third, winter enhancement occurs when denitrification slows. Cooler temperatures reduce denitrification rates in sediments, allowing rainfall-delivered nitrate to persist longer in the Page 8 Lake of the Pines Algae Bloom Analysis water column. The combination of nitrate availability and adequate phosphorus supports winter blooms. Mid-December Peak The NE Cove shows a substantial TSI increase peaking around day 350 (mid-December), with concentration of 5-15°C cooling events in November and December. This timing suggests fall lake mixing (October-November) delivers a nutrient pulse to the NE Cove that, combined with rainfall-delivered nitrate, produces the annual maximum bloom. The effect persists through December as temperatures remain cool enough to limit denitrification losses. Alternative Hypotheses Considered Main Lake Alternatives Light limitation contributing to summer patterns was considered. Longer summer days and higher sun angles increase light availability, which could contribute to summer productivity. However, this mechanism would predict gradual seasonal changes rather than the event-driven pattern associated with cooling events. Light is likely a permissive factor rather than the controlling variable. Wind-driven sediment resuspension could theoretically release phosphorus during summer storms. However, this mechanism would predict correlation with wind or storm events rather than the observed cooling signature. The data more strongly support thermal destabilization of stratification as the primary mechanism. NE Cove Alternatives Groundwater inputs were considered as an alternative nitrogen source. Higher water tables during winter could increase nutrient-rich groundwater discharge. While this may contribute, it does not explain the direct correlation with precipitation events. Groundwater effects would likely show a more gradual seasonal pattern. Different sediment chemistry in the shallow cove could theoretically favor winter phosphorus release. However, the negative temperature correlation argues against temperature-dependent sediment processes as the primary driver. Macrophyte decomposition in fall could release nutrients that support winter blooms. This may contribute to the late fall/early winter nutrient pulse but would not explain the direct correlation with rainfall throughout the winter period. Research Gaps and Monitoring Recommendations Critical Data Needs 1. Seasonal nutrient analysis: Direct measurement of dissolved inorganic nitrogen (nitrate, nitrite, ammonium) and phosphorus (total phosphorus) in surface water in both zones Page 9 Lake of the Pines Algae Bloom Analysis and bottom water in deeper sections would confirm the hypothesized nutrient limitation patterns. 2. Thermal profiling: Continuous temperature monitoring at multiple depths would document stratification strength and mixing events, validating the partial mixing hypothesis. 3. Sediment phosphorus release potential: qualify sediment physical properties (color, texture, smell; free); quantify organic matter and solids content (^'$100/sample), eventually quantify sediment releasable phosphorus (—$200—600/sample). 4. Stormwater characterization: Sampling of NE Cove inflows during rain events would quantify external nutrient loading and confirm nitrate as the limiting nutrient. Conclusions Roughly ten years of satellite and weather data strongly support a dual-mechanism model for Lake of the Pines algae blooms. The main lake body experiences summer blooms driven by internal phosphorus loading during partial mixing events that disrupt thermal stratification and deliver hypolimnetic nutrients to surface waters. The NE Cove experiences winter/spring blooms driven by external nitrate loading from precipitation events, with nitrogen limitation suppressing summer productivity despite favorable temperatures. This spatial and temporal separation of bloom drivers has profound management implications. A single lake-wide strategy will be ineffective because the two zones require fundamentally different interventions targeting different nutrient sources at different times of year. The consistency of patterns across 366 sampling events over nearly a decade provides high confidence in these conclusions. The proposed mechanisms are consistent with established limnological principles and can be further validated through targeted monitoring of nutrient concentrations and thermal dynamics. Page 10 Interactive Satellite a U e ec Data Viewer Visualization Mode: Both Data Label: Chlorophyll TSI Q Show Weather Data Q Show Regressions Algae Heatmap Default [ _ , INII r � • navenP1a'¢ 'A Mr • Q. • l % rx Lake of • the Pines o. ^4 "?6,,,I Golf Course • Ps �M, • ,,Arsr 'e • • . crepnb,w,,Way 3 b Road t E 'k t eobolink Vya O�' a y 3 Jrp Ir. Leaflet I©OpenStreetMap contributors I I I I I 40 50 60 70 80 Chlorophyll Trophic Status Index (TSI) Temperature Precipitation o°- a►.� 0% 25% 50% 75% 100% • 0% 25% 50% 75% 100% Percentile Percentile Temperature Metric Current v Precipitation Metric 7-day Total v Context Entire Period v Algae Over Time Chlorophyll TSI Display: Show Average v Precipitation Display: Daily Precipitation v • 65 _ 60 I 55 s 0_ 0 50 0 U 45 40 c 30 N 25 co 20 a 15 H 10 5.0 I I I I I I I A 1 Jul Jan Jul Jan Jul Jan Jul Jan Jul Jan Jul Jan Jul Jan Jul Jan Jul Jan Jul 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Time Chlorophyll TSI Temperature O Precipitation Oligotrophic (Good) Mesotrophic (Medium) Eutrophic (Bad) Hypereutrophic (Very Bad) Q Show Temperature Q Show Precipitation Layout: Split (Stacked) Statistical Overlay Chlorophyll TSI: Temperature: Precipitation: None None None Smooth Data with Moving Average Chlorophyll TSI: Temperature: Precipitation: None " None " None March 25, 2016 Jan June Jan June Jan June Jan June Jan June Jan June Jan June Jan June Jan June 2017 2018 2019 2020 2021 2022 2023 2024 2025 Customize Time Series Dynamic Temporal Heatmap Visualization ,,, La ke Lake of the Pines Algae Bloom Analysis Findings from -10 Years of Satellite & Weather Data 366 Sampling Events 8 Monitoring Sites 2016-2025 EXECUTIVE SUMMARY Core Finding Lake of the Pines operates as two fundamentally different systems. • The main lake body experiences summer algae blooms from internal nutrient loading and has less significant blooms due the large volume of the lake • The Northeast (NE) Cove experiences winter blooms from nitrogen input. Algae growth is significantly larger here, due to smaller volume of water and isolation from main lake. O Main Lake Body ,. r all NE Cove • "----- Peak Season: Summer (Jun-Oct) Peak Season: Winter (Nov-Apr) Driver: Internal P loading • Driver: External N loading Mechanism: Thermal stratification, '"'" • Mechanism: Rainfall delivers nitrate when 04— • partial mixing events ' , denitrification is slow Bloom Freq: less likely • Bloom Freq: much more likely I i These contrasting patterns require zone-specific management approaches. 8 Key Locations with -10 years of Satellite and Weather Data r Ai SNorth (30 ft) �� • ��narenWs� L 2 West(55 ft) • • NE Cove (10 ft) • NW(40 ft) rX ,., • Pnic, Course Mid (35 ft) • East Cove (10 ft) Midsouth (30 ft) • South (20 ft) C'hnabi k" i f rad vobohni,is.. 611 f Y. Lake-wide mean - TSI vs day of year (ALL data, circular kernel, 25-day) 65 - 0 0 0° 00 0 0 0 0 - 80 O 0 60 - CO 0 0 a) 0 O 4 v -0 -0 c 00 0 0 O c vl ° 55 - - 0 see -0 0 0 Cb - 70 u� see - •,�• ° 0 O , U 00 `•• O 0 0 u • 0 O O a 0 ° .0 °0 0 O 0 Q I° I - O O �d0 i• 0 - 6012 ro O • 0 O O 0 ra BOO O O ° O _. a- O ° 2 - 0 O 2 O -,00 (mop I0 0••••• � � - 50 � 8 0 0 00 0 � •• 0000 0 ° cpo�' -(b ° 0 O 0 ° °00 r � 0 O C O O O . `• 0 Cog •�, 0 O 80 Q�3� Wit•0 0 0 0 0 O 0 0 - 40 i I I I I I i 50 100 150 200 250 300 350 Day of year Trends in Algae with Season and Location in the Lake TSI vs Day of Year - Northern Region (25-day circular kernel) - West - 55 ft - NW - 40ft 48 - North - 30ft ` -- Northern average ♦ ♦` Lake-wide mean I/ `• / 46 - / •` c / •` Un / / (13;° / (n / s 44 - / a / o / I / al / /. / - / �..♦ 0 42 - / • o / L / I / `�—..... ' 40 38 - I 1 I 1 1 1 1 50 100 150 200 250 300 350 Day of year TSI vs Day of Year - Southern Region (25-day circular kernel) - East Cove - 10 ft - South - 20 ft 50 - Midsouth - 30 ft - Mid - 35ft —— Southern average 48 - — Lake-wide mean ♦ x /" \\ \ v 46 - u 0 0 44 - as 0- 0 0 42 - I 40 - / 38 - 50 100 150 200 250 300 350 Day of year TSI vs Day of Year - Regional Comparison (25-day circular kernel) 65 x 28 60 - c IA 0 n3 4-, Lri u 55 — NE Cove - loft s Southern average a o Northern average a — Lake-wide mean >, 50 - a 0 0 U 45 - Notoili, 40 I I I I I I I 50 100 150 200 250 300 350 Day of year KEY STATISTICS 9 . 5 366 8 45% Years Events Sites vs 28% Satellite observations NE Cove vs Main Lake of continuous monitoring (once per 10 days) monitored across lake algae bloom frequency TSI Statistics by Site Site Depth (ft) Mean TSI Max TSI Bloom Freq North 30 42.3 73.4 21.6% NW 40 43.2 66.0 28.7% West 55 43.5 70.5 27.0% Mid 35 44.4 74.1 32.2% Midsouth 30 43.9 69.1 30.6% South 20 44.7 86.4 33.9% East Cove 10 45.8 86.4 39.1% NE Cove 10 50.5 86.4 45.4% / c t_ ice, ,,, 4 to„ � .`'� p` .�'• a.• 3 -� i 3 Nt," 38 \,,. I ,/ rA rR rX rA ak<o, he PlneS le PiOeS r�ww� 3 ,wwy �ww., � r 3 N. ' u4.,w J u+w,e. 3 �'ha,�,w K w^, III I I I I I I I I I I I I III I I I 40 45 50 55 60 65 40 45 50 55 60 65 55 60 65 40 45 50 55 60 65 Trophic Status Index(TSI) <50=Good water quality; 50—70=Eutrophic(bad water quality); >70=hypereutrophic(severe algae bloom) Spring (Feb 1 — April 31) Summer (May 1 —July 31) Fall (Aug 1 — Oct 31) Winter (Nov 1 — Jan 31) • Best water quality of • High algae in Southern • Algae in main body of • Algae is extremely high the entire year. portion of the lake the lake is reduced in NE Cove, while • Medium algae in the • Algae buildup in the NE minimal everywhere Northern portion of the Cove begins else. lake • This is before mixing of • The peak in NE Cove is • Minimal algae in the the entire lake and mid December. Northern and NE Coves. shortly after the peak • This may suggest temperature (usually late July). FRAMING THE SITUATION Situation Complexity Lake of the Pines experiences good water quality, but Blooms occur at different times in different parts of the lake, periodic algae blooms affecting water quality and recreational use. suggesting multiple mechanisms at play. Question Ideas What mechanisms drive blooms in each zone, and how • Main lake needs internal P loading controls(summer) should management strategies differ? • NE Cove needs external N loading controls(winter). General Principles of Limnology • Algae growth requires nutrients(N and P), light, and suitable temperature. • Shallow waters cycle nutrients faster and are more susceptible to external inputs. • Nitrogen will be removed from the system during the summer—less available in the summer, more available in the winter. • Thermal stratification creates anoxic conditions that release sediment phosphorus. • Phosphorus will generally be more available in the summer, less available in the winter. ICEBERG MODEL: Events vs. Root Causes Events (Visible) Key Evidence Algae blooms observed at different times across lake zones Main Lake Bloom Triggers: Surface Level • Best predictors= • 10-20°F cooling events in prior 30 days Patterns (Trends) • Warm temperature correlation • Negative precipitation correlation (rain does NOT cause it) Main lake:summer-algae bloom when warm/dry. NE Cove:winter-algae bloom when cold/rainy. NE Cove Bloom Triggers: • Best predictor= 14-day prior rainfall • Peak TSI in mid-December Structures (Systems) • Negative temperature correlation • Unlikely to be driven by anoxia or phosphorus Main Lake:Thermal stratification+anoxia NE Cove:Shallow depth+rapid N removal in summer Statistical Support: • NE Cove:45% bloom frequency(>50 TSI) • Main Lake: 28% bloom frequency • Winter NE Cove TSI: 58.1 vs Main:40.9 Suspected Root Cause Main Lake: P-limitation=sediment P release NE Cove: N-limitation= Nitrate from water/mixing Lake Average-TSI vs 14-day Avg Temperature Best Predictors of Algae Blooms 65- r=0.27 • ••• • • • p=0.0 •• • The lake was split into 3 categories: a=366 • • • • 60- • . • • • The NE Cove, which has blooms in the winter .•• • • • • • The Southern portion of the lake, which has 55- • • • ., �• • • •blooms in the summer • • • •••• • ;,his• S • • • • • .9 • • The Entire lake average 50- •• • • • •••• ;+ • • Rain was the best predictor of algae in the NE Cove '• • .ti-y•y �;�~'"-' 45- • • • •�---• •- i• • •• (bottom left) f - • - .--1 •• • • •M • ; 0 • The 14-day average temperature was the best --- ,. M• • '•• ••• '«•: _• • •~ predictor of algae in the Southern part of the lake • • • • 'Iris•• ? '�••' and the overall lake average algae abundance (right) 5 10 15 20 25 30 14-day average temperature I°C) 90- r=0.464 i' Southern Lake-TSI vs 14-day Avg Temperature p=0.0 I n=166 • •_• • ��, n,' r=0.358 •• ' 0.0 �•• � =1464 • • i • 80- i 80- • • � • • • • i' •�• • • • ��•''' v • 70 • • • • • • P 70- 1• �i�• • • • i • • I. i 60 Its •S� •• 50- •• i' 43 °N 4,•$ 4 fel • • r -- • ••� �` •t• • -•—i • ' • • • M-t-y •• • I�•• _ • • • • • 40- _ ------- �� N• • • • 1•• 50- a•.• 0 50 100 150 200 5 30 15 20 25 30 14-day prior rainfall(mm) 14-day average temperature I°C) MAIN LAKE: Internal Loading Mechanism The Partial Mixing Hypothesis o CO CI 4 © 6 Stratify Anoxia P Release Cool Event Mix Bloom Summer heat creates Bottom waters isolated Anoxic conditions 10 20°F cooling P-rich bottom water P pulse+warm temps+ warm surface,cool from 02;sediments go release sediment-bound destabilizes thermocline mixes into surface light=algae bloom bottom layers anoxic phosphorus 12! Supporting Evidence Bloom Timing:TSI peaks June (50.0) and November(49.8)-summer stratification and fall turnover periods Cooling Signature: Blooms(TSI>_50) between Jun 1-Oct 1 show many 10-20°F max cooling periods in prior 30 days Spatial Pattern:South/East Cove sites initiate; synchronized response across main lake suggests single process Precipitation: Negative correlation = internal sources dominate; rain dilutes rather than adds nutrients Southern Lake-Cooling vs Day of Year(All TSI) — Southern Lake-TSI vs 14-day Avg Temperature (331310 16- - r=0.358 le p•C33 -80 n=1=1464 C20 80- ,-,14 Om� u • m12- al MO aQJM 70 _ • • C • • • 0 l'aa• O O • u • • a S. 10- 01i0 ai0 SD a• aww Sig�CO ,� 0• •i _ • 1 g • O O aliens•• ApSt r64-• ra/•0 r 60- • ' /•� i • • O�QJ O•4 .. t4 u120':tee a Z • • • • .,11 T_. O OCbC�� �� 0 ` true 0 • S. /e • •.4 air Q 50- '. : 6 8 p • aa• 0 le Q.(8O • aa1 O -50 00 0 0• •• as le 0 ••.•i •4•_ —i -•-i 00 • • • • • t-y--• • : • _ • • • a- 8 0 ® 0 • 0 40 --- -----r M• •• • • • •- o (ant :Apr 1 - Jul 1 Oct 1 Dec 31 5 10 15 20 25 30 Day of Year 14-day average temperature(°C) North East COVE: External Loading Mechanism The Nitrogen Limitation Hypothesis SUMMER (Suppressed Algae) WINTER (Enhanced Algae) Despite favorable conditions: Warm temperatures Nitrogen limitation relieved: • High light(shallow= 10 ft) • Rainfall delivers nitrate(atm. deposition+ runoff) •• Higher phosphorus availability • 14-day prior rain = best predictor Suspected Limiting factors: • Denitrification suppressed: • Enhanced denitrification in warm sediments Cool temps slow microbial N removal • • Rapid N cycling depletes available nitrogen Nitrate persists longer in water column • • Result: N-limited,TSI—46.6(Mesotrophic=good) Result: N available,TSI "58.1 (Eutrophic= bad) Critical Period: Mid-December Peak • Fall lake mixing(Oct-Nov) delivers a nutrient pulse to NE Cove that,combined with rainfall-delivered nitrate and suppressed denitrification, produces annual maximum blooms peaking around day 350. • The 5-15°C cooling signature between Oct 31-Dec 31 confirms mixing contribution. NE Cove-Cooling vs Day of Year(All T5I) „es. 16- 4 90- r=0.464 �i' 1 OOP -s0 P=0.0 �� in=166 • •j • • ''' 14- °M1 IC — u MADse•• • ''i •t3IDQUO ti t 80- • • • -' >. co OHO Ott OS. -70 • • • • 212- COO • g tutu 6.4P f • • .0• • • �� • .5 10_ 0 od. push, „k rO u•slI.in D 00 • ��� • 0 CO O���� „Joni � • „u t o •• .� x e- 0 Op • O esIIII10i f •v �j • • j ����• • r ORD • o•b� �� 0 antra: 0 ~ •ss• •• 1. • ° ° •• 63220 ° tr • o 0 0 OM 0 •• • a- o O• ® 0 0 0 • • • • • -40 • _ 50- • Jan 1 Apr 1 Jul 1 Occ 1 Dec 31 Day of Year 0 50 100 150 200 14-day prior rainfall(mm) MONITORING RECOMMENDATIONS • Monthly sampling at 5 locations: • 1 water sample (Mid-depth) at green dots • 2 water samples(Surface water and bottom water) at purple dots • Therefore, 7 total samples • The following samples (Bend Genetics Pricing): • Total Phosphorus=$40 • - • Total Nitrogen = $40 rlr' • Total Ammonia=$40 • Total Nitrate = $40 • Or • $160/sample x 7 =$1,120/event • Additional (free) analyses: • Chlorophyll (algae abundance) can be monitored with satellite imagery • Secchi disk depth • Sonde profile (if multiparameter sensor is owned) • Notes on any algae or water turbidity • Notes on any differences between sites(algae at one site but not another,turbid in one area • Notes on any observed aquatic plants • Monitor LakeTech data (low DO, high temperature,turbidity, etc) • Potential Future Analysis: • Sediment characteristics(free if you have a dredge-take pictures and LakeTech can interpret) • Sediment organic matter and solids content(^'$100/sample-3 to 5 samples recommended) • Sediment phosphorus(not recommended right now, but potentially in 2027) CONCLUSIONS Dual-Mechanism Model Confirmed Main Lake Body: Summer blooms driven by internal phosphorus loading during partial mixing events (10-20°F cooling) that disrupt thermal stratification NE Cove: Winter/spring blooms driven by external nitrate loading from precipitation events, with nitrogen limitation suppressing summer productivity Management Implication This spatial and temporal separation requires zone-specific strategies: internal loading controls for main lake during summer, external loading controls for NE Cove watershed year-round. LEvidence Base Consistent patterns across 366 sampling events over 9.5 years provide high confidence. Mechanisms align with established limnological principles and can be further validated through targeted monitoring. Additional Details and Figures Predictors of Algae Blooms Northeast Cove - TSI vs Precipitation 90 - r = 0.464, #, p = 0.0 #' 1n = 166 O O � O O Oi# IS O i 80 - • p • i- 0 • • 0 -i • • •#� O � • • � 0 # 0 70 - I • '.i�• O •,• • . 60 - •$a • • • • • • • • • 50 - • •• 0 50 100 150 200 14-day prior rainfall (mm) Southern Lake - TSI vs 14-day Avg Temperature ,r = 0.358' OS p = 0.0 n = 1464 80 - 0 • 0 70 - • e 0 • • • e• • • , ;• . • .. H60 - • • , •_• I 111' ;8 1 • �_ • • •) •• IS -• A• ( . ,h, -- 50 $ • • • • • •r • %' •• - • • • 1-�.-- • 0 S o - ` I. • 0 • o 00 __ 0 0 40 - S—= • B dJ -c 0 5 10 15 20 25 30 14-day average temperature (°C) Southern Lake-TSI vs Temperature (All Windows) Current Temperature 14-day Average Temperature OD fr=0.338 • r=0.358 p=0.0 p=0.0 80- 80- • • ••• 70- • • • • 70- • • • • • • _ • , • • _ • •~ • • • i • • •• II ; ;• • 8 • ••• 60- • •_ 14 A • • ' ~60- • $ •• •••• •• • '• Si • • . t• • • •••• i , _• fI r4 f :•• is , : 50- • •• : •• 7 • -- 50- •• • •• •• -- et. �-r__11_ - • ••• . • • •_ EV'•__• _ •• • _•= S• • 40- __--- •• • • • •�•• L . ••• • grip-- '• ,• •• . IS I.. • • 5 10 15 20 25 30 35 5 10 15 20 25 30 Current temperature(SC) 14-day average temperature(CC) 30-day Average Temperature 60-day Average Temperature r=0.306 •• r=0.182 •• p=0.0 p=0.0 80- 80- •• •• • 70- • • • • 70- • • • • • • • t ••% • ; i• • '• • •• - • to 1 • • • •• Ia. • : ~60- • $ • • 4• •� ~60- •?111 • • • ! • •• • • •• 4,4114 • • • le • I • ♦• taj 50- • •• •• ••• ` d 50- ;• • • •S •• Z i--••-t •' • •• • • • • • �- --} i— • • • _ — • I • • • • • •• ____ ---�— • • • • ••� _•� ao =N I • . • . •- !. �� ao • • •�• • • • 5 10 15 20 25 30 5 10 15 20 25 30-day average temperature(CC) 60-day average temperature(°C) Lake Average - TSI vs 14-day Avg Temperature 65 - ,r = 0.27 ° •• • • • p = 0.0 • •• n = 366 , O • • ° * n 60 - 0 80 a O 0 O 1 ) • O 55 °• •• •• e1 � ., ° ° �c • • • • • • • • •% O ° • • • • • • • • 1- 0 50 - • • • • • • • • • • _• • • • • O 0 • • ; °0 O 8 j_• ir•--• • °4 o •• o • • -. • 45 - — � s- io� •° — — • 0 O • • — 0 0 °•� •o N 0 • • o • •• O • � • • • • • O ° • �O •• • • •• • ••Nr • `C •• ••NM♦ •• IIIIII 5 10 15 20 25 30 14-day average temperature (°C) Lake Average-TSI vs Temperature (All Windows) Current Temperature 14-day Average Temperature 65- 65- • • r=0.229 •• • • • r=0.27 • •• • p=0.0 • • • p=0.0 • •• • • • • S S . • 60- • • • • 60- • • •• O. • t •• • • • •' • • 55- • •• • •• ••• • • • • • / 55-• • • • y• •. • • • •• • • • • • • • • • • . • • • •• • • •• • •• • • •••• • •• -• •• • • • • • • •••• • •• • • • •••• t• • • • '0• • •ii••• •• _ -N • • • 4 •. '►•_ _I •-•• • • •••• �;+���it•�r • • • • S •• • 45- r }•. —i--r • 45- :— • • •��r •♦• w • lo•• :• • l _2-0--� %• • • •1•• • 1 • -s-w • ••.• �• • •1•••_• _t_ •— • •• •• • •• •ice • M ao •• •••••• �• ;�obi• i 40- •I• • • • •�••�i~ _ ,4 • se••.• �• •• w w•w•�w•• awe ••• . • ew..J.. _ be es sum" w eneee 5 10 15 20 25 30 35 5 10 15 20 25 30 Current temperature(SC) 14-day average temperature(CC) 30-day Average Temperature 60-day Average Temperature 65- • • 65- • • r=0.232• • • • r=0.141 • • • p=0.0 • • • p=0.007 • • • • • • • • •• • 60- • • `• 60- • • • • • . * • 5.• • t• • j • • • • • • • s • • •�• •• • • •• •• ss- • • • • •��so •• • • 55- •f •�. ••�• • • • • ~so- • • • •_ •+ •• ••!•i ••• ~so- ,• � I •i• •••�•• • • • j• _ •• •• _ • • • •i. • •: S%. • •s• • • • •• • •• •171, _• •• �. 45- • •� �!—•.1—s—s•` • •• 45- •• �• ---•— —'r•'• • plc— • • • • •4 •� • N ti i• sit•-T.••• • ••e•• •. • i4 ••• • •• •; • • ••�• •• • • - �•,• • ••• • • �• �• •• •I •• 40- •••�• • ••• ••• •• • •e ! •• 40- •4 • • • • • •is �• 4116 • 5 10 15 20 25 30 5 10 15 20 25 30-day average temperature(CC) 60-day average temperature(SC) Cooling Events as Critical Drivers of Algae Blooms • Cooling events during the summer (and occasionally in the fall) can cause the nutrient-rich bottom water to mix into the surface in the main body of the lake • Cooling events in the fall and the spring can cause nitrogen to be replenished in the surface water in the NE Cove. • There is a fairly high correlation between these cooling events (where the air temperature rapidly cools within a short period of time) and algae blooms within 30 days of the cooling event in the following slides. NE Cove - Cooling vs Day of Year (All TSI) 16 - 00� - 80 COD 14 - OCD .. COTO U, CD cc cco RDAS c - 70 0 12 - CO r, cogp0133 4► CD OD 0 C?3D0 ®a0 Q 0 0 t��• I O a) OD tt�&t 0 WIT co O O -1 .� 10 - tr O tti. . Ln c' 0 0 ( ) ttt•�.j �K eft`t'l'f • - 60 0 tt�tt�(t� too Q* O x8- 0 0 0 M O 0 nun" �' tt� t�! tt���0 O 8.• • 0 0 SO,, Op (Doom t((tti�(it0 ) CO 0 ~ •0 0 O • C OM MO D Q000O 0 MO •• - 50 6 _ • •• ° 0 0 623380 O N • 0 GOD 0 4 - O O• 0 CD 0 • • 0 -40 Jan 1 Apr 1 Jul 1 Oct 1 Dec 31 Day of Year Southern Lake - Cooling vs Day of Year (All TSI) 16 - 0 0D I 80 O 14 - OQOO -- = 00 Cie OD 03 04t610 O 70 0 12 - QDO m C3gP CO3D \I CD OD 0 `o ccc O(I• MD 'a 00 .� to - 0 t4 O K�c0cc •e O gmeb co O 0 •Il ul 0' O «t• • 0 "'t �tt�t•'no O, = O O 0 «(ct'�• et We-No t - 60 o tttt• 444 4 • x 8 0 O O 0 CD 0 (� t•ttt�i�t• ttit• 4•• t O O `° 1O offs OD 0 ;, 0 000� U 0 t((ttii�t• 0 It 03 0 O O 0 0 ,. a 0 7 6 - 0 0 0 0 410• "&. c �O t 441) 0 - 50 00 0 0 0 0 Brie 0 t• • 0 tt! 0 4 - O � 0 Cm O 0 0 0 - 40 Jan 1 Apr 1 Jul 1 Oct 1 Dec 31 Day of Year Lake Average - Cooling vs Day of Year (All TSI) I 16 - 0a . 60 14 - OoDO cTCO Q S v, A.:,.., Cr)uJOD (13 .4140 0 12 - le 55 o cr%3D 0[ 0 0 ti C33IO. M O 0 0 �� .Its t• tt1" Eb co O • c' •0 O9 'tier O t j�tt�tt t� ) �' - 50 0 O CD O kg"om 18e((e' �• •Pd.[� • Q-n e sets* O x 8- O OO o • �O O O • CT� 0 � GO tKt� tE Cm o o o O 441/ 0 " O 2 II O - 45 O O i � i 4O tt' 6 _ OOO • ` O a O t1I 0 0 0 0 so • 4_ O 00 inci O • 0 -40 0 Jan 1 Apr 1 Jul 1 Oct 1 Dec 31 Day of Year Predictors of Mixing Events Predicting Cooling Events to Predict Algae Blooms • The majority of very significant cooling events (> 10 C average temperature drop in less than 4 days) occurred: • Late May to Late June (early heat wave, then cooling) • Around October 1 (early cold front, likely revert to warm temperatures) Cooling Events >_7°C within 4-Day Periods (2016-2025) Date shown is start of cooling period 13 12 - • 0O O • O (20". 11 - 0 O -o > • 0 CC • a) 10 - 1 Ln 0 00 � \ • O cn 9 0 00 O 0 4 0 • 0 r,° 0 80000 0 O OO U 0 0 O 0,Th0 0 ��O o 0 0 0 O 0 0� 8- I O O O 0 O 00 0 Ov O O O CSC 0 0 00 4-All° O 0 0 • 0 0 0 00 0 O _ r,0 • r, O CE} co 0 Jan 1 Apr 1 Jul 1 Oct 1 Dec 31 Day of Year NE Cove - Cooling vs Day of Year (TSI >= 50) 00 0 0 T51 50-62 16 - 0 TSI 62-75 O O • TSI >= 75 � 14 - 000O U >, 00• OI1 cot 12 - o O O c 0 `o ••O Q O O 10 - O , e00 �� N O 0 • 00O O O a 8- • ) O M O e "O O • • 0 9D co 6 - L °° O •• 00 OO OO 00 •• 0 0 0 O 00 0 O 00 0 • O 0 • 4- 0 Jan 1 Apr 1 Jul 1 Oct 1 Dec 31 Day of Year Southern Lake - Cooling vs Day of Year (TSI >= 50) CO 0 T51 50-60 16 - 0 TSI 60-67 0 • TSI >= 67 0 u 14 - 00000 ,, 0 co 000 13 0 00000 0 12 _ 0 cap 00 •00 •• • _`o_ Q- 0 0000 • 0 CO .O O 0 s 10 - 0 0 00 00•O• COO • 0 0 600, oc ,,orDa00••(4.. > 8 • 00�� • 0 m • • 6 - 0 / • 8° •0 00 0 4 - 00O • T Jan 1 Apr 1 Jul 1 Oct 1 Dec 31 Day of Year Lake Average - Cooling vs Day of Year (T5I >= 50) 0 T5150-56 16 - 0 TSI 56-62 • TSI >= 62 o u 14 _ 0 00 N COO 13 2 12 - �� o O r! • • Q 00 O to - 0 •O 0�00• • 0 0 O 0 o Ot •O • x 0 0 0 >,ro 8- • OCP 0 0 0100 as 0 8•Ca 0 7 6 0 KO • 0 0 • 8 « c• 0 4 - 0• 0 1 I — I Jan 1 Apr 1 Jul 1 Oct 1 Dec 31 Day of Year WATER QUALITY MANAGEMENT PLAN ° MARCH 2023 Water Quality Management Plan for the General National Pollutant Discharge Elimination System (NPDES) Permit for the Discharge of Lanthanum-modified Clay to Surface Waters of the United States in the San Diego Region Water Quality Order # R9-2021-0056 NPDES NO. # CAG999003 NOT FOR DISTRIBUTION OR CIRCULATION. PROVIDED AS AN EXAMPLE WORK PRODUCT FOT STPUD ONLY. PREPARED FOR PREPARED BY Vista Irrigation District Stillwater Sciences 1391 Engineer Street 2855 Telegraph Ave., #400 Vista, CA 92081-8840 Berkeley, CA 94705 Technical Report Water Quality Management Plan—Lake Henshaw Suggested citation: Stillwater Sciences. 2023.Water Quality Management Plan for the General National Pollutant Discharge Elimination System(NPDES)Permit for the Discharge of Lanthanum-modified Clay to Surface Waters of the United States in the San Diego Region.Amended April 2023. Water Quality Order#R9-2021-0056,NPDES NO. #CAG999003. Prepared by Stillwater Sciences, Berkeley,California for Vista Irrigation District,Vista, California. March 2023 Stillwater Sciences i Technical Report Water Quality Management Plan—Lake Henshaw Table of Contents 1 INTRODUCTION 1 2 GENERAL PERMIT BACKGROUND 3 3 DESCRIPTION OF TREATMENT AREA 4 4 LANTHANUM-MODIFIED CLAY—PHOSPHORUS INACTIVATION 6 5 LANTHANUM-MODIFIED CLAY APPLICATION METHODOLOGY 6 6 TRANSPORT,FATE AND FACTORS INFLUENCING LANTHANUM-MODIFIED CLAY USE 8 7 DESIGNATED BENEFICIAL USES 10 8 CUMULATIVE AND INDIRECT EFFECTS 11 9 POTENTIAL DESIGNATED USE IMPACTS 12 10 KNOWN AND POTENTIAL IMPACTS TO WATER QUALITY 12 11 SAMPLE LOCATION AND TIMING 12 11.1 Sample Locations 12 11.2 Sample Collection Schedule 14 11.3 Visual,Physical,and Chemical(VPC)Monitoring Requirements 14 11.4 Benthic Macroinvertebrate Bioassessment Monitoring 16 11.5 Periphyton Bioassessment Monitoring 17 12 SELF-MONITORING REPORT(SMR) 19 12.1 Reporting Protocols 20 13 REFERENCES 21 March 2023 Stillwater Sciences ii Technical Report Water Quality Management Plan—Lake Henshaw Tables Table 1. Phosphorus concentrations in Warner Ranch Wellfield pumped groundwater during 2022. 5 Table 2. Lake Henshaw sampling location descriptions. 12 Table 3. Visual,physical,and chemical(VPC)monitoring requirements. 15 Table 4. In situ water quality methods for monitoring in Lake Henshaw. 16 Table 5. Benthic macroinvertebrate sampling location descriptions 17 Table 6. Periphyton sampling location descriptions 18 Table 7. Monitoring periods and reporting schedule 19 Figures Figure 1. Project vicinity and location map. 2 Figure 2. Lanthanum-modified clay application log 7 Figure 3. Total phosphorus and orthophosphate at buoy line surface and buoy line bottom sites in Lake Henshaw,January 2021 through early February 2023. 8 Figure 4. Lake Henshaw sampling locations. 13 Appendices Appendix A.Vertical Water Quality Profiles for Lake Henshaw Appendix B. Supplementary Information March 2023 Stillwater Sciences iii Technical Report Water Quality Management Plan—Lake Henshaw 1 INTRODUCTION Located in northern San Diego County, California, Lake Henshaw is a 52,000-acre foot(AF) surface water impoundment of the upper San Luis Rey River,north and east of the city of San Diego(Figure 1). The Vista Irrigation District(District)operates Lake Henshaw and groundwater wells within the 43,000-acre Warner Ranch surrounding the lake to provide municipal, domestic, agricultural, and recreational water supply for use by the District,the City of Escondido (Escondido), and the La Jolla, Rincon, San Pasqual, Pauma, and Pala Bands of Indians(the Bands). The lake also stores local runoff from several intermittent tributaries including the west fork and mainstem of the San Luis Rey River,the Agua Caliente, San Ysidro,Buena Vista, Matagual, and Carrista creeks, and several unnamed creeks(Figure 1). Other designated beneficial uses for Lake Henshaw water include industrial process and service supply; freshwater replenishment;rare,threatened, or endangered species habitat; hydropower generation;warm freshwater habitat; contact and noncontact recreation; and wildlife habitat(San Diego Regional Water Quality Control Board 2021). The District was alerted to the possibility of Harmful Algal Blooms(HABs)in Lake Henshaw by remote sensing data made available through the California HABs portal(https://fhab.sfei.org/) (San Francisco Estuary Institute 2022). In lakes and reservoirs, excessive seasonal cyanobacteria can result in low dissolved oxygen(DO),high pH,high un-ionized ammonia, and problematic levels of one or more cyanotoxins, including microcystin, cylindrospermopsin, anatoxin-a, and saxitoxin. At elevated concentrations, cyanotoxins can cause public health concerns and bioaccumulate in the tissue of aquatic biota, such as shellfish, fish, and marine mammals, potentially harming these organisms as well as the humans that consume them. Cyanobacteria blooms containing toxins are often referred to as HABs. In March 2020,the District began monitoring for the presence of cyanobacteria and cyanotoxins in Lake Henshaw. Since then, routine monitoring and laboratory analysis have confirmed the seasonal presence of elevated levels of the cyanotoxins microcystin and anatoxin-a at multiple sites in the lake. Additionally,the District launched a project to manage HABs and cyanotoxins in Lake Henshaw and Lake Wohlford. Phase I objectives of this project included developing short-term solutions (defined as occurring prior to 2024) for mitigating or treating HABs; screening potential long- term alternatives(defined as occurring in the year 2024 or later)for preventing or minimizing HABs; developing a HABs Mitigation and Monitoring Plan that includes a Water Quality Monitoring Plan; and gathering relevant data to inform future phases of the project. The findings of Phase I were documented in the Lake Henshaw and Lake Wohlford Harmful Algal Blooms Management and Mitigation Plan(HABs Management and Mitigation Plan; Stillwater Sciences 2022a). The HABs Management and Mitigation Plan serves as the Technical Report for the District's application for the San Diego Regional Water Quality Control Board(RWQCB) General Permit for the Discharge of Lanthanum Modified Clay for the Mitigation of Phosphorus in Surface Waters of the United States Water Quality Order#R9-2021-0056 (herein referred to as the General Permit). March 2023 Stillwater Sciences 1 Technical Report Water Quality Management Plan—Lake Henshaw LANTHANUM-MODIFIED CLAY TREATMENT IN LAKE HENSHAW • da y \ T� Mcreek _ `, 00 c� t Q 6 - _� i � -- 1 \ ofl ''"\ ire 9 l ,,r /'�' Le.. \\ _ \\,f sic.,'' T ce ce°00p900 Warner Springs ° / r- �" 1 \ G� �ti, 1 f p° Swan Lake ° -creek / - ‘ /� f \ � \ Lost Lake o 1 r son °1 Rev \ 11r ° 1O°p l i1 Lakei � • \ - e - r' r , f` \ r''m /�1 p`F 1 J / I. l 1 \ee4 y... O 4arse_Visr J. y r'\ Va fey` \ e//ire r / P0+ 1 "r/ 1 // tenter r'•.eC / / e o l IL 1 - 0f� \ r _ :T : o1 • ld / - o 1 79; tom„o-" _/--a \ '1 1 i� / •1 J-'� , 1 / \ r- r 1 t \_r r- / 1 \ a0 > i ` t 1 l� .\1 <\1 / r �/ , .., ( /' f r _ 1 1 a/�)✓ i / "�\ ./ 1 J 0\ 1 \r Coe- ). \ \ / 1' /r it >� \ 1 li �\ 1 I //. „,\,,./ \_ _ r 1 \o,� �-r� '.:..\ \\ f `ter / 0 oriltdo \ /I ( l ,i . ',^`1.._' Lake > >r5on %y 1 0" v„ -,\ / Ir %. \ spas �®�._ - fJ " t c $U erland s -, 1. r sot/ 1. ��creek r 9ua1 r t 1 µ y b1 �.� \ 8 \� • �. voile), , ( /) 1 \ J' 1 \ no Cr ''./ 1 c l� i r .c_ .♦- - r "'> \' 1 �� `—��. ^ 1 T I �a 4,,:"\m c5%� _ _/iet_G\ade;"/ mil \ \VI —` �� 4 -\ '°cI 'Duran gad° �� ^i \ ek d �I // "—� !` l tidy II / �.. Lake Henshaw Location and Vicinity Map Sources: Map Location Roads,cities,waterbodies:ESRI 2016 Los ® Well Perennial stream Landowner Landowners:CPAD nge oAles Ditch system Intermittent stream ❑Warner Ranchqp Ditch system,wells:Vista Q Palm Escondido canal Infrastructure r---Springs Waterbody 0 Lso ID I i3 6pometers San Diet I ' I o 1 2 4 Miles Stillwater Sciences Figure 1. Project vicinity and location map. March 2023 Stillwater Sciences 2 Technical Report Water Quality Management Plan—Lake Henshaw Based on consideration of numerous potential in-and out-of-lake management methods to control HABs,phosphorus inactivation/chemical sediment sealing through the use of lanthanum- modified clay was selected as one in a set of suitable methods for short-and long-term water quality improvements in Lake Henshaw. The goal of the lanthanum-modified clay application in Lake Henshaw is to remove bioavailable phosphorus(i.e., orthophosphate)from the water column and minimize or eliminate orthophosphate release from Lake Henshaw sediments during hypoxic (DO<2 milligrams per liter [mg/L])or anoxic (DO=0 mg/L)conditions. The magnitude of orthophosphate release measured in Lake Henshaw sediment chambers was the largest ever measured in similar studies of California reservoirs(for additional details see Technical Report Section 2.2.2.3). Minimizing or eliminating such a high flux would reduce internal loading of phosphorus and the potential for this nutrient to support HABs(for additional details see Technical Report Figure 2-55). A fundamental assumption of phosphorus inactivation as a lake management technique is that phosphorus is the limiting nutrient and its control will, in turn,control nuisance algae growth. Existing information characterizing Lake Henshaw indicates the lake has shifted from a nitrogen-limited system to one that is phosphorus-limited on a total nutrient basis and on a bioavailable nutrient basis (i.e.,orthophosphate, ammonia,nitrate)both nitrogen and phosphorus are present at high levels throughout the year(for additional details see Technical Report Section 2.2.2.4). 2 GENERAL PERMIT BACKGROUND The Code of Federal Regulations Section 122.48 requires that all NPDES permits specify monitoring and reporting requirements.Water Code Sections 13267 and 13383 also authorize the San Diego Regional Water Quality Control Board to require technical and monitoring reports. This Water Quality Monitoring Plan(WQMP)adheres to monitoring and reporting requirements described in item no. 7 of the General Permit Attachment F—Fact Sheet,which implements the federal and State of California(State)regulations. The WQMP describes the tasks and time schedules that answer the following questions: 1. Does the discharge of lanthanum-modified clay cause or contribute to an exceedance of receiving water limitations? 2. Does the discharge of lanthanum-modified clay cause or contribute to an exceedance of the "no toxics in toxic amounts"narrative toxicity objective? Additionally, General Permit Attachment E—Monitoring and Reporting Program(MRP) establishes monitoring,reporting, and recordkeeping requirements that implement federal and State laws and/or regulations. March 2023 Stillwater Sciences 3 Technical Report Water Quality Management Plan—Lake Henshaw 3 DESCRIPTION OF TREATMENT AREA Lake Henshaw is fed by surface runoff as well as pumped inflow from the District's Warner Ranch Wellfield. Water pumped from the wellfield flows by gravity into an approximately 1,800- foot unlined channel' before entering the intermittent San Luis Rey River upstream of Lake Henshaw,then flows for approximately one mile before entering the lake. During winter months, following significant precipitation events,natural,intermittent inflows to Lake Henshaw occur from the San Luis Rey River,West Fork San Luis Rey River,Matagual Creek, Carrizo Creek, Carrista Creek,Buena Vista Creek, and Agua Caliente Creek(Figure 1). During April through October in most years,water in the San Luis Rey River between Henshaw Dam and the Escondido Canal Diversion Dam is predominantly supplied by releases from the dam(Section 2.3 in the Technical Report). The 52,000-AF Lake Henshaw produces an average annual yield of 13,500 AF of water for entitlements held by the District,Escondido, and the Rincon Band of Indians. The La Jolla Band of Indians also benefits from the passive recreational use of water released from Lake Henshaw to the San Luis Rey River as it flows through a campground operated on their reservation lands. The Diversion Dam and the start of the Escondido Canal also are located within the La Jolla Reservation,and the canal supplies water to the 6,500-AF Lake Wohlford. Groundwater pumping at the Warner Ranch Wellfield began in 1951 at the start of wellfield operations,with regular sampling conducted by the District for field water quality indicators, major and minor ions,nutrients,and trace elements. The United States Geological Survey Groundwater Ambient Monitoring and Assessment program(USGS GAMA)also sampled the Warner Ranch groundwater and analyzed samples for general parameters,major ions,trace elements,nutrients, dissolved organic carbon(DOC),microbiology,volatile organic compounds (VOCs),wastewater compounds, and contaminants of emerging concern(CECs). Refer to Section 2.1.3 in the Technical Report for a complete summary of the historical monitoring data, analysis, and discussion. In 2022,the District began monitoring the two inputs from the wellfield into Lake Henshaw,the wellfield terminus, and an outflow point associated with the 70s Wells. These data(Table 1) indicate that total phosphorus in Warner Ranch Wellfield terminus is predominantly bioavailable orthophosphate and concentrations are fairly steady at both locations. For the recent(2022)data, average concentrations at the wellfield terminus are roughly twice those at the 70s Wells and roughly 40%higher than the historical average(2000-2019,n=8). 1 The HABs Management and Mitigation Plan(Stillwater Sciences 2022a)incorrectly refers to this feature as an unnamed stream. The channel is not indicated as a"blue line stream"on USGS topographic maps and is an artificially maintained conveyance between the Warner Wellfield terminus and the San Luis Rey River. March 2023 Stillwater Sciences 4 Technical Report Water Quality Management Plan-Lake Henshaw Table 1. Phosphorus concentrations in Warner Ranch Wellfield pumped groundwater during 2022. Wellfield Terminus 70s Wells Sample Date Total Phosphorus Orthophosphate Total Phosphorus Orthophosphate (mg/L) (mg/L) (mg/L) (mg/L) 1/3/2022 0.08 0.08 0.03 0.03 1/10/2022 0.08 0.03 0.08 0.03 1/18/2022 0.08 0.08 0.03 0.03 1/24/2022 0.04 0.03 0.09 0.08 1/31/2022 0.07 0.07 0.04 0.04 2/7/2022 0.07 0.07 0.03 0.03 2/14/2022 0.09 0.07 0.04 0.04 2/22/2022 0.08 0.07 0.03 0.03 2/28/2022 0.08 0.08 0.03 0.03 3/7/2022 ' 0.08 0.07 0.03 0.03 3/14/2022 0.06 0.06 0.02 0.03 4/4/2022 0.06 0.06 0.02 0.03 5/31/2022 0.07 0.06 0.02 0.02 8/1/2022 0.08 0.07 0.04 0.04 9/6/2022 0.08 0.07 0.04 0.03 10/3/2022 0.07 0.07 0.03 0.03 11/7/2022 0.08 0.05 0.04 0.02 12/5/20222 0.06 0.07 0.02 0.02 Average 0.07 0.06 0.04 0.03 Sampling of water quality within Lake Henshaw began in 1978 as part of the USEPA National Eutrophication Study. Water quality parameters (i.e., DO, conductivity,pH, alkalinity,nutrients, chlorophyll-a)were collected as integrated depth samples at two sites (one site near the dam and one site in the shallow southern portion of the lake) and composited across sites for analysis. Secchi depth was collected at both sites. Since 1984, lake water quality samples have been collected by the District approximately semi-annually(e.g.,June and December)for numerous minerals(i.e.,magnesium,potassium, sodium),metals/metalloids(i.e.,aluminum, antimony, arsenic,barium,beryllium,boron, cadmium,calcium,chromium, copper, iron, lead,manganese, mercury,nickel, selenium, silver,thallium, zinc),nutrients(nitrate), and other constituents (alkalinity,bicarbonate, carbonate,hardness, chloride, conductance, fluoride,hydroxide,pH, sulfate, surfactants,total dissolved solids,turbidity). Beginning in 2020,the District has collected additional water quality data at three sites within Lake Henshaw and one site immediately downstream of the dam. Beginning in March 2020,cyanotoxin(microcystin, anatoxin-a) samples were collected from at least two of these four sites.Nutrient(total phosphorus [TP],total nitrogen [TN])samples were collected at two sites beginning in August 2020. The District eventually included both a surface and bottom water sample at one site,and the frequency of monitoring for both cyanotoxins, TN, and TP increased from approximately biweekly to weekly. Beginning in January 2021,nutrient analyses were expanded beyond TN and TP to include orthophosphate (P043-),nitrate(NO3), and ammonia(NHa+). Refer to Section 2.2.2 in the Technical Report for a complete summary of this data,analysis, and discussion. March 2023 Stillwater Sciences 5 Technical Report Water Quality Management Plan—Lake Henshaw At full pool(spillway elevation 2,690.59 feet above sea level),Lake Henshaw has a surface area of 2,256 acres, a volume of 51,832.2 AF,and a maximum depth of 49 feet. The reservoir is broad and shallow, sloping gently from its northern, eastern, and southern edges towards a narrow, deeper channel near the dam. The surface area of Lake Henshaw varies seasonally. The typical average depth is roughly 8-20 feet,as the reservoir is rarely at maximum capacity. 4 LANTHANUM-MODIFIED CLAY - PHOSPHORUS INACTIVATION Lanthanum-modified clay rapidly inactivates free reactive(i.e., orthophosphate or soluble) phosphorus as it moves down through the water column of a water body following application. Inactivation occurs when the lanthanum cation forms a chemical bond with the orthophosphate anion(P043-)to form an insoluble and biologically inert mineral called rhabdophane (La(PO4)•H20). Rhabdophane settles on and integrates with the bottom sediments of the water body, forming a thin(<2 mm)and permeable clay layer. Lanthanum-modified clay also binds orthophosphate in sediment pore waters,thereby inactivating bioavailable phosphorus released from the sediments. 5 LANTHANUM-MODIFIED CLAY APPLICATION METHODOLOGY During the proposed 2023 lanthanum-modified clay application,the District expects that the reservoir will be at 5%-60%capacity,which corresponds to approximately 600-1,800 surface acres,respectively.All areas within Lake Henshaw,including various coves, are subject to treatment with lanthanum-modified clay. The lanthanum-modified clay treatment surface area will be a function of the lake's capacity at the time of treatment, accessibility,and cost and labor feasibility. Approximately 28,630 pounds of bioavailable phosphorous(i.e., orthophosphate)will be targeted for inactivation in Lake Henshaw. The mass-based stoichiometry for the lanthanum-modified clay product that will be used is 50 pounds of lanthanum-modified clay for every 1 pound of bioavailable phosphorus. Given this stoichiometry, approximately 1,432,000 pounds of lanthanum-modified clay would be needed to inactivate all of the bioavailable phosphorus. As this amount of lanthanum-modified clay is greater than what is reasonable or affordable to apply in a single treatment,the District proposes to apply within the range of 24,000—716,000 pounds of lanthanum-modified clay per treatment,with no more than 716,000 pounds total applied in a given year. This translates to 0.9-26.7 milligrams per liter(mg/L)or parts per million(ppm) lanthanum-modified clay per treatment,with the most likely application range being substantially lower at 0.9-2.7 mg/L due to cost constraints. The above dosing amounts were calculated following analysis of water and sediment samples collected from ten locations in Lake Henshaw in February 2023. The calculations assume a lake surface area of approximately 1,200 acres. All personnel working on the application team will be certified and properly trained for the application of lanthanum-modified clay. The application team will follow the product label, material safety data sheet(MSDS), and all other applicable state and federal laws associated with implementation of this project. Lanthanum-modified clay granules will be staged at a designated area onshore and loaded into application boats. The lanthanum-modified clay granules will be mixed into water slurry in a collection tank on each boat, and the slurry will be broadcast evenly across the lake water surface at a specific volume per acre. Each boat will be equipped with a March 2023 Stillwater Sciences 6 Technical Report Water Quality Management Plan—Lake Henshaw Global Positioning System(GPS) guidance system in order to regulate application rate and ensure even dosing across the lake. Each application event is projected to be completed in 2-4 days, with the first application tentatively planned to occur in April/May 2023. Figure 2 depicts the form that will be used to document application activity. I.GENERAL Date Location Start Time Stop Time Agency Personnel Weather Total Area Treated(AC or linear ft) Target Weed(s) II. : LANTHANUM—MODIFIED CLAY(LMB)INFORMATION Amount of LMB Used: Rate or Target Concentration: Method of Application: III.TREATED WATERBODY INFORMATION Waterbody type(Circle One:reservoir,lake,pond)Other: Water flow(cubic ft/sec) Water Depth(ft): Water temperature(F): Color:(circle one)none brown green other: Clarity(circle one) poor fair good Other Information: IV.GATES,WEIRS,CHECKS OR OTHER CONTROL STRUCTURES(ONLY FILL OUT IF APPLICABLE) A.Are there any gates or control structures in the treatment area that may allow discharge of treated water outside of the treatment area?? Yes No (If the answer to question A is Yes,then answer question B below,otherwise leave blank) Before Application B.Have flow control structures been closed to prevent unintended discharge from the treatment area? Yes No C.Have flow control structures intentionally remained open to meet pre-project flow requirements? Yes No During Application D.Were flow control structures inspected for discharge? Yes No E.If discharge occurred;provide detail in the table below Gate Location/Description Time Closed Time Opened Approximate Flow(cubic ft/sec) VI.CERTIFICATION (print name)certify that the WQMP has been followed(sign here):X Figure 2. Lanthanum-modified clay application log. March 2023 Stillwater Sciences 7 Technical Report Water Quality Management Plan—Lake Henshaw 6 TRANSPORT, FATE AND FACTORS INFLUENCING LANTHANUM-MODIFIED CLAY USE Laboratory analysis of samples collected from the lake approximately weekly from January 2021 through present indicate that total phosphorus(TP)is highest during summer months,ranging 0.3 to 0.8 mg/L,when TP is suspended within the water column inside of phytoplankton cells. Orthophosphate concentrations tend to peak during late/summer fall,following the onset of hypoxic(DO<2 mg/L)or anoxic(DO=0 mg/L)conditions in lake bottom waters and/or sediments,which can release orthophosphate into the overlying water column(for additional detail see Technical Report Section 2.2.2.3). TP content of Lake Henshaw sediments based on samples collected at four sites in 2021 ranges approximately 1,200 to 4,000 milligram per kilogram(mg/kg),which is relatively high(Beutel 2021). These elevated levels of phosphorus due in large part to internal loading is a substantial factor driving poor water quality in the lake. • orthoP • TP Site ID • H-BL A H-BLS 0.8- • • • iij♦ • 0.6- ♦� • • • ♦ ♦♦ *♦ • ♦ ♦• •A. 0.4- ♦ i • ♦ i •♦ • ♦ ♦ a •• ♦ Sg • • _ A • ♦ 0.2- •i• N • I • • •• ♦ ♦ AIA e •♦ - ` ' Coe N N N N N N N N N N N N N N N N N N N N N O O O O O O O O O O O O O O O O O O O O O O O O O N N N N N N N N N N N N N N N N N N N N N N N t, Q Q Vl 0 Z u_ Q 2 Q 0 Z 0 IL Figure 3. Total phosphorus (TP; pink) and orthophosphate (P043-; blue) at buoy line surface (H- BLS; triangle) and buoy line bottom (H=BL; circle) sites in Lake Henshaw, January 2021 through early February 2023. Analytical laboratory quantification limits (QLs) are shown as dashed line. All results below the quantification limits are considered estimated values. Results reported as non-detects by the analytical laboratory are shown as 0.5 x instrument sensitivity limit (0.01 mg/L) and represented by open circles and triangles. No method detection limit (MDL) was reported by the analytical laboratory. As part of the District's consideration of numerous potential in-and out-of-lake management methods to control HABs, a variety of source control measures have been completed or are currently being investigated to prevent future external loading of phosphorus to Lake Henshaw: • In February 2021,the District discontinued the use of sodium hexametaphosphate,an anti- sealant, in the Warner Ranch Wellfield,where the wellfield is a major source of water for Lake Henshaw. The District used the orthophosphate-containing anti-sealant from February 2015—January 2021. March 2023 Stillwater Sciences 8 Technical Report Water Quality Management Plan—Lake Henshaw • The District is currently investigating options for treating Warner Ranch Wellfield input to Lake Henshaw to bind orthophosphate in flowing water coming from the wellfield before it enters the lake. There are two inputs from the wellfield into Lake Henshaw;the wellfield terminus and an outflow point associated with the 70s Wells. The District is currently monitoring both locations for total phosphorus(TP)and orthophosphate(OP) concentrations. Analysis of 18 samples taken throughout 2022 at the wellfield terminus and an outflow point associated with the 70s Wells showed an average of 0.07 mg/L TP and 0.04 mg/L TP and an average of 0.06 mg/L OP and 0.03mg/L OP,respectively. • Lastly,most of the Warner Ranch continues to be available for grazing under grazing licenses issued by the District,and typical head counts vary between 1,500 and 2,500 cattle. Since the 1990s,fencing has prevented cattle from having direct access to Lake Henshaw,and the District has recently installed fencing to prevent cattle from having direct access to ditches conveying pumped well water in the Warner Ranch Wellfield. Exclusion fencing and off-channel watering ponds within Warner Ranch reduces the potential for cattle to mobilize sediment and associated phosphorus that can then be transported into to Lake Henshaw. Beyond measures to control the input of phosphorus to Lake Henshaw,the District has undertaken algaecide treatments to mitigate effects of HABs within the lake. In June 2021,the District obtained a Statewide Aquatic Weed Control Permit for application of copper sulfate, chelated copper,and sodium carbonate peroxyhydrate(peroxide)to control HABs in Lake Henshaw.Algaecide peroxide treatments in Lake Henshaw occurred on March 14 and 15, 2022 and May 16-19,2022,but appeared to have a minor effect on HABs with variable and modest changes in chlorophyll-a,the ratio of pheophytin-a to chlorophyll-a,total cyanobacteria cell densities, and nutrient concentrations following treatment.A third algaecide treatment was undertaken by the District using SeClear, a non-chelated copper sulfate treatment,on August 17 and 18, 2022. The August copper-based treatment appears to have been more effective at controlling HABs than the application of peroxide-based algaecides in Lake Henshaw in March and May of that same year(Stillwater Sciences 2022b). This conclusion is supported by: • Significantly greater reduction in cyanobacterial cell counts after treatment with copper as compared to treatment with peroxide; • The significant reduction in the concentration of anatoxin-a from a range of 1.09- 7.15 micrograms per liter(µg/L)prior to treatment to non-detect(<0.15 µg/L)within 4 days of treatment with copper; • The absence of a rebound in microcystin concentrations 2 weeks following treatment with copper, as observed in March and May when treated with peroxide; and • Greater percentage reduction in chlorophyll-a after treatment with copper compared with treatment with peroxide. The District will continue to gain experience with algaecide treatments in order to improve their effectiveness and reduce their impacts. However, algaecide treatments in combination with currently implemented source control measures have not adequately controlled the phosphorus levels and HABs in Lake Henshaw. Thus,beginning in spring 2023,the use of lanthanum- modified clay is being proposed in combination with algaecides covered under the Statewide Aquatic Weed Control Permit,to better control HABs and support designated beneficial uses(see also Section 7). March 2023 Stillwater Sciences 9 Technical Report Water Quality Management Plan—Lake Henshaw Lanthanum-modified clay application rates and application techniques for this project are based on the assessment of the lake conditions and data from water and sediment samples collected from the lake over the past two years. To prevent the lanthanum-modified clay applied to Lake Henshaw from discharging to downstream waterbodies,the controllable valves at the Henshaw Dam intake tower will be closed during a lanthanum-modified clay application to control the extent, if any,that the receiving waters of the San Luis Rey River would be affected by residual lanthanum-modified clay. Applications will not occur during a time when heavy precipitation would be likely to result in reservoir spill events. The reservoir has not been close to capacity in 20 years(since the early to mid-1990s). Currently,the application of lanthanum-modified clay is planned for when Lake Henshaw is between 5%-60%capacity, such that the potential for unplanned reservoir discharge due to storm activity is extremely small. Lanthanum-modified clay applications will target late spring, summer, and fall periods when orthophosphate is in the water column and/or likely to be released from bottom sediments. In the event of an exceedance of receiving water limitations caused by the application of lanthanum-modified clay,the District will cease the discharging water downstream,notify the San Diego Water Board, and remediate the exceedance in a timely manner. The District will take all reasonable steps to minimize or correct any adverse impact on the environment, including accelerated or additional monitoring, as may be necessary to determine the nature and effect of the non-complying discharge. 7 DESIGNATED BENEFICIAL USES Lake Henshaw is a surface water impoundment of the upper San Luis Rey River.According to the San Diego Regional Water Quality Control Board Water Quality Control Plan for the San Diego Basin(Basin Plan; 2021)dated September 8, 1994 and amended September 1,2021,Table 2-4,the following beneficial uses exist for Lake Henshaw: • Municipal and Domestic Supply • Agricultural Supply • Industrial Service Supply • Industrial Process Supply • Freshwater Replenishment • Contact Water Recreation • Non-contact Water Recreation • Warm Freshwater Habitat • Wildlife Habitat • Rare,Threatened, or Endangered Species • Hydropower Generation Definitions for these beneficial uses are as follows: Municipal and Domestic Supply(MUN)—Includes uses of water for community,military, or individual water supply systems including,but not limited to, drinking water supply. March 2023 Stillwater Sciences 10 Technical Report Water Quality Management Plan—Lake Henshaw Agricultural Supply(AGR)—Includes uses of water for farming,horticulture, or ranching including,but not limited to, irrigation,stock watering,or support of vegetation for range grazing. Industrial Process Supply(PROC)—Includes uses of water for industrial activities that depend primarily on water quality. Industrial Service Supply(IND)—Includes uses of water for industrial activities that do not depend primarily on water quality including,but not limited to,mining, cooling water supply, hydraulic conveyance,gravel washing, fire protection,or oil well repressurization. Freshwater Replenishment(FRSH)—Includes uses of water for natural or artificial maintenance of surface water quantity or quality(e.g., salinity). Contact Water Recreation(REC-1)—Includes uses of water for recreational activities involving body contact with water,where ingestion of water is reasonably possible. These uses include,but are not limited to, swimming,wading,water-skiing, skin and SCUBA diving, surfing,white water activities, fishing, or use of natural hot springs.Note that fishing is the only listed activity currently permitted on Lake Henshaw. Non-contact Water Recreation(REC-2)—Includes the uses of water for recreational activities involving proximity to water,but not normally involving body contact with water,where ingestion of water is reasonably possible. These uses include,but are not limited to,picnicking, sunbathing,hiking,beachcombing, camping,boating,tidepool and marine life study,hunting, sightseeing, or aesthetic enjoyment in conjunction with the above activities. Warm Freshwater Habitat(WARM)—Includes uses of water that support warm water ecosystems including,but not limited to,preservation or enhancement of aquatic habitats,vegetation, fish or wildlife, including invertebrates. Wildlife Habitat(WILD)—Includes uses of water that support terrestrial ecosystems including, but not limited to,preservation and enhancement of terrestrial habitats,vegetation,wildlife(e.g., mammals,birds,reptiles, amphibians,invertebrates),or wildlife water and food sources. Rare, Threatened, or Endangered Species(RARE)—Includes uses of water that support habitats necessary, at least in part, for the survival and successful maintenance of plant or animal species established under state or federal law as rare,threatened, or endangered. Hydropower Generation(POW)—Includes uses of water for hydropower generation. 8 CUMULATIVE AND INDIRECT EFFECTS No adverse cumulative and indirect effects are anticipated. The expected direct effect of use applying lanthanum-modified clay to Lake Henshaw is a reduction in the amount of orthophosphate in the water,which is subsequently anticipated to reduce the incidence of HABs in Lake Henshaw and improve water quality. March 2023 Stillwater Sciences 11 Technical Report Water Quality Management Plan—Lake Henshaw 9 POTENTIAL DESIGNATED USE IMPACTS No long-term adverse designated use impacts are anticipated. The lake water column is likely to experience a short-term decrease in water column transparency immediately after lanthanum- modified clay is applied to the water. This short-term decrease is expected to last between 24-48 hours,at which time water column transparency is anticipated to return to pre-treatment levels. 10 KNOWN AND POTENTIAL IMPACTS TO WATER QUALITY No adverse impacts to water quality are anticipated.As previously stated,the expected effect of use applying lanthanum-modified clay to Lake Henshaw is a reduction in the amount of orthophosphate in the water,which is subsequently anticipated to reduce the incidence of HABs in Lake Henshaw and improve water quality. 11 SAMPLE LOCATION AND TIMING Surface water monitoring will be conducted according to USEPA test procedures approved under 40 CFR Section 136, "Guidelines Establishing Test Procedures for the Analysis of Pollutants Under the Clean Water Act,"as amended. 11.1 Sample Locations Approximate sample locations are shown in Figure 4 and described in Table 2, Table 5,and Table 6. Table 2. Lake Henshaw sampling location descriptions. Site ID' Description Latitude' Longitude' H-1 Open water 33.248063 -116.752269 H-2 Open water 33.24427 -116.75616 H-3 Open water 33.24377 -116.76035 H-4 Open water 33.23944 -116.75768 H-5 Open water 33.24167 -116.75209 H-6 Open water 33.24277 -116.74557 H-7 Open water 33.23751 -116.74166 H-8 Open water 33.23486 -116.74772 H-BL(S) Buoy line at dam in bottom waters(H-BL)and in 33.239479 -116.761714 surface waters(H-BLS) H-FD Southwestern shoreline at the in-water end of the 33.235453 -116.75556 fishing dock in surface waters H-SL Southern portion of lake in surface waters 33.23 -116.744 1 The number and location of sampling sites may need to be adjusted based on lake level,accessibility,and other conditions affecting the representativeness of the sites for characterizing water quality conditions before,during, and following treatment.Location accuracy is assumed to be+30 ft. March 2023 Stillwater Sciences 12 Technical Report Water Quality Management Plan—Lake Henshaw A THAN M-M•1 F I AY TR ATM T 1 A HENSHAW i I ( I ~ \ `‘ Lost Lake!I ! �\ \. \} v . _ 1 A \..\ _ SLR��15 Big lak . o i \ c \ `t • o �� \CL • ws 9P ( L • AG • H�} - Lake e q ��,tl i r Henshaw creeK ,. sow Q7 H.3�o ( i^ H 6 1 ��gt0 0 F' H-5' o^ •-1r. • �p0 - 0 1 0-4 ° t g' --;�J co H-BL / \ SLR-DS4\7 2^/1 7 �/ • -FD H 8 '-• • 0 \ o } H-SL / 0 ^o Lake Henshaw Sampling Locations Map Sources: Map Location Roads,cities,waterbodies: ESRI 2016 o Upstream sampling site Lake area at 2,690.6 ft spillway elevation Landowner Landowners:CPAD 0Anseles Ditch system,wells:Vista Palm o Downstream sampling site a� Lake area at 2,660.0 ft elevation ❑ Warner Ranch ® o Spring o Lake sampling site Perennial stream Ai o o Well Intermittent stream 0 0.25 0.5 1 alometere Ditch system i . . . i . . ii San Diegoo WWW 0 0.15 0.3 0.6 Miles Stillwater Sciences Figure 4. Lake Henshaw sampling locations. March 2023 Stillwater Sciences 13 Technical Report Water Quality Management Plan—Lake Henshaw The sample locations described are sufficient to represent: (a)the quality of surface water prior to application; (b)the quality of surface water within the treatment area; and(c)the quality of surface water outside the treatment area that potentially could be affected by the application. With respect to(a)and(b),while the locations within the lake shown in Figure 4 and Table 2 account for less than one sample per 10 surface acres,data collected in March,May,and August 2022 as part of algaecide application events demonstrate that the Lake Henshaw water column is generally well-mixed,with water temperature,pH, and turbidity measurements remaining generally stable with depth across shallow and deeper sites (Appendix A). While water temperature and pH can be elevated in surface waters during summer months,when solar heating is greatest and rates of photosynthesis are high,the relatively high wind fetch2 of Lake Henshaw (approximately 1 to 2 miles) and overall shallow water column depths mean that wind mixing of the water column occurs regularly and throughout the lake. Given the high degree of mixing, lake sample locations shown in Figure 4 and Table 2 are expected to be representative of water quality conditions in Lake Henshaw prior to lanthanum-modified clay application and within the treatment area,where the latter would include either a portion of the lake or the entire lake, depending on the lanthanum-modified clay dose. The lanthanum-modified clay treatment amount(i.e., dose)will be scaled to the lake's volume and surface area at the time of treatment; lanthanum-modified clay may be applied to all open water or a smaller area based on cost and lake conditions. "Within treatment area"lake samples will only be collected from locations in Figure 4 and Table 2 that fall within the actual treatment area.With respect to (c),if lanthanum-modified clay treatment includes the entire surface area of the lake,then all lake sampling locations will be considered"within treatment area"and the site immediately downstream of Lake Henshaw Dam on the San Luis Rey River(SLR-DS)will be designated as surface water outside the treatment area that potentially could be affected by the application. If lanthanum-modified clay treatment does not include the entire surface area of the lake,then lake sampling locations outside the treatment area will still be collected,but they will be designated as surface water outside the treatment area that potentially could be affected by the application,along with location SLR-DS. Samples will be collected according to Section 11.2. Additionally,during event monitoring, one field duplicate(FD)and one field blank(FB)will be collected and submitted for analysis for each grab sample analyte. 11.2 Sample Collection Schedule 1. Pre-Application Monitoring. Background monitoring samples shall be collected prior to the time of the application event and at the specified monitoring locations,no sooner than 24 hours before the application event. 2. Event Monitoring. Event monitoring samples shall be collected during application within the treatment area. 3. Post-Event Monitoring. Post-event monitoring samples shall be collected within the application area in static water and outside the treatment area in flowing water within one week after application. 11.3 Visual, Physical, and Chemical (VPC) Monitoring Requirements Samples will be analyzed as required in Table 3. 2 The unobstructed distance along the lake water surface for wave development from wind. March 2023 Stillwater Sciences 14 Technical Report Water Quality Management Plan—Lake Henshaw Table 3. Visual, physical, and chemical (VPC) monitoring requirements. Sample Type Constituent/Parameter Units Sample Method 1.Monitoring area description and location 2.Appearance of water' Not applicable Visual Visual 3.Weather conditions(fog,rain,wind,etc.) Observation 4.Water column transparency ft or m Secchi disc 1.Water temperature2,3 °F or°C 2.Dissolved oxygen(DO)2'3 mg/L In situ Physical 3.pH2,3 standard units vertical profile 4.Chlorophyll-a2,3 RFU or µg/L 1.Free lanthanum—water4 µg/L 2.Total lanthanum—sediments ug/kg 3.Alkalinity4 mg/L CaCO3 Chemical 4.Total suspended solids(TSS)4 mg/L Grab4 5.Orthophosphate—water4 mg/L 6.Total phosphorus(TP)—water4 mg/L 7.Total phosphorus(TP)—sediments mg/kg Appearance of water shall include details on floating or suspended matter,color,sheen,clarity,bottom deposits, aquatic life,algae,objectionable growth,and nuisance conditions. 2 In situ vertical profiles will be collected in the water column every one foot down to 16 feet,and then will be sampled every two feet thereafter. 3 In situ field testing instrumentation will be calibrated,operated,and maintained according to manufacturer's recommendations. 4 Water grab samples shall be collected at the surface of the lake for all sites except at Site H-BL,which will be collected in bottom waters in the deepest part of the lake. 5 Sediment grab samples will be collected at two locations,one at Site H-BL and one at a shallow site within the treatment area. All laboratory analyses shall be conducted at a laboratory certified for such analyses by the California State Water Resources Control Board Division of Drinking Water(DDW).3 The laboratory will be accredited under the DDW Environmental Laboratory Accreditation Program (ELAP)to ensure the quality of analytical data used for regulatory purposes to meet the requirements of Order-R9-202 1-005 6.3 Data collected as part of the physical and chemical monitoring parameters in surface water(water temperature,DO,pH,chlorophyll-a, TP, orthophosphate)will be used to address question 1 in Section 2,"Does the discharge of lanthanum-modified clay cause or contribute to an exceedance of receiving water limitations?"An exceedance will be determined according to numeric (various) or narrative(biostimulatory)objectives set for each of the aforementioned parameters/constituents in the Basin Plan, as applicable(San Diego Regional Water Quality Control Board 2021). Additional chemical monitoring parameters(free lanthanum,total lanthanum)will be used to address question 2 in Section 2, "Does the discharge of lanthanum- 3 To our knowledge,lanthanum analyses are not currently available through ELAP laboratories.Dissolved lanthanum will be analyzed using USEPA 1638(modified)with closed-vessel digestion,at a method detection limit(MDL)of 0.004 µg/L and an anticipated reporting limit(RL)of 0.041 µg/L.Total lanthanum in sediment will be analyzed using USEPA 6020(modified)with USEPA 3050B digestion,at an MDL of 0.02-0.03 mg/kg and an anticipated RL of 0.2-0.3 mg/kg. March 2023 Stillwater Sciences 15 Technical Report Water Quality Management Plan—Lake Henshaw modified clay cause or contribute to an exceedance of the"no toxics in toxic amounts"narrative toxicity objective?". The toxicity objective in the Basin Plan states"all waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human,plant, animal, or aquatic life"(San Diego Regional Water Quality Control Board 2021).Physical and chemical water quality data will be used in combination with benthic macroinvertebrate(Section 11.4) and periphyton monitoring(Section 11.5)to determine whether the discharge of lanthanum-modified clay caused an exceedance of the Basin Plan narrative toxicity objective. The District will measure in situ water quality parameters(water temperature,DO,pH, chlorophyll-a)using a pre-calibrated multi-probe sonde with designated sensors(Table 4). For in situ water quality,the sonde will be calibrated within 24 hours of sampling. Calibration data will be recorded on a calibration log that includes measurement quality objective criteria for real-time comparison. Additionally, all monitoring instruments and devices will be properly maintained. Appropriate QA/QC methods and documentation will be followed.All sample bottles will be rinsed with water from the water body to be collected from. QA/QC in the field will be assured by accurate and thoroughly completed sample labels, field sheets, and chain of custody and sample log forms. Sample labels will include sample identification code, date,time, site name, sampling location, collector's name, sample type, and preservative,if applicable. Table 4. In situ water quality methods for monitoring in Lake Henshaw. Parameter 1 Method Units MDL Water Temperature EPA 170.1 Degrees Celsius(°C) 0.1 Dissolved Oxygen(DO) SM4500-0(G) Milligrams per liter(mg/L) 0.1 pH SM4500-H Standard unit of pH(s.u.) 0.1 Optical Reflective Fluorescence Unit Chlorophyll-a luminescence (RFU)or micrograms per liter 0.01 (µ g/L) 11.4 Benthic Macroinvertebrate Bioassessment Monitoring Upon direction from the RWQCB,one (1)pre-treatment and one(1)post-treatment benthic macroinvertebrate sample will be collected in representative wadeable stream habitats upstream and downstream of the treatment area,as shown in Table 5.Additionally, samples will only be collected,if the stream meets sampleability criteria. A reach is considered"sampleable"in the Standard Operating Procedures(SOP)for the Collection of Field Data for Bioassessments of California Wadeable Streams:Benthic Macroinvertebrates,Algae, and Physical Habitat(Ode et al. 2016)if at least half of the reach has a wetted width of at least 0.3 meter(m)and no more than three transects are completely dry within the monitoring reach at the time of sampling. If more than three transects in the representative upstream and/or downstream habitat are dry at pre- treatment sampling time, and the reach(es)cannot be shifted slightly upstream or downstream to reduce the number of dry transects,then the reach(es)will not be sampled for benthic macroinvertebrates. If directed by the RWQCB and sampleable reaches are present,benthic macroinvertebrate sampling will be conducted within seven days prior to commencement of the lanthanum-modified clay application in Lake Henshaw and within 30 days of post-application. Post-application benthic invertebrate monitoring is not required if no discharge from the treated waterbody occurs during application or within 30 days after the completion of the application. Data collected as part of the benthic macroinvertebrate monitoring will be used to address question 2 in Section 2, March 2023 Stillwater Sciences 16 Technical Report Water Quality Management Plan—Lake Henshaw "Does the discharge of lanthanum-modified clay cause or contribute to an exceedance of the"no toxics in toxic amounts"narrative toxicity objective?". The toxicity objective in the Basin Plan states"all waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human,plant,animal, or aquatic life"(San Diego Regional Water Quality Control Board 2021).Physical and chemical water quality data (Section 11.3)will be used in combination with benthic macroinvertebrate and periphyton monitoring(Section 11.5)to determine whether the discharge of lanthanum-modified clay caused an exceedance of the Basin Plan narrative toxicity objective. Table 5. Benthic macroinvertebrate sampling location descriptions. Site ID Location Description SLR-US* Upstream Upstream of Lake Henshaw on San Luis Rey River Downstream of Lake Henshaw Dam on the San Luis Rey River SLR-DS* Downstream between the dam and the Rey River Ranch(approximately 4.5 miles downstream of the dam) * Latitude and longitude will be determined following reconnaissance surveys to determine representative stream lengths for upstream and downstream comparison. Benthic macroinvertebrate samples will be collected using SOP for the Collection of Field Data for Bioassessments of California Wadeable Streams:Benthic Macroinvertebrates,Algae, and Physical Habitat(Ode et al. 2016). Laboratory analysis of benthic macroinvertebrates for taxonomic identifications shall be conducted at a Southwest Association of Freshwater Invertebrate Taxonomists(SAFIT) level of II or IIa level(midges to subfamily)in accordance with the most recent State SOPs for Laboratory Processing and Identification of Benthic Macroinvertebrates in California(Woodward et al. 2012). Benthic macroinvertebrate data collected and identified shall be used for calculating California Stream Condition Index scores on a per sample basis(one reach, one sampling event). Scores are calculated using the most recent version of Instructions for Calculating Bioassessment Indices and other Tools for Evaluating Wadeable Streams in California: The California Stream Condition Index(CSCI),Algal Stream Condition Index(ASCI) and Index of Physical Integrity(IPI) (Boyle et al. 2020).Data shall be reported in the SWAMP format and uploaded into the California Environmental Data Exchange Network(CEDEN). 11.5 Periphyton Bioassessment Monitoring Upon direction from the RWQCB, one (1)pre-treatment and one(1)post-treatment periphyton (attached algae) sample will be collected in representative wadeable stream habitats upstream and downstream of the treatment area, as shown in Table 6.Additionally, samples will only be collected, if the stream meets sampleability criteria(see Section 11.4 for definition of sampleability). If more than three transects in the representative upstream and/or downstream habitat are dry at pre-treatment sampling time,and the reach(es) cannot be shifted slightly upstream or downstream to reduce the number of dry transects,then the reach(es)will not be sampled for periphyton. If directed by the RWQCB and sampleable reaches are present,periphyton sampling will be conducted within seven days prior to commencement of the lanthanum-modified clay application in Lake Henshaw and within 30 days of post-application. Post-application periphyton monitoring is not required if no discharge from the treated waterbody occurs during application or within 30 days after the completion of the application. Data collected as part of the periphyton March 2023 Stillwater Sciences 17 Technical Report Water Quality Management Plan—Lake Henshaw bioassessment monitoring will be used to address question 2 in Section 2,"Does the discharge of lanthanum-modified clay cause or contribute to an exceedance of the"no toxics in toxic amounts" narrative toxicity objective?". The toxicity objective in the Basin Plan states"all waters shall be maintained free of toxic substances in concentrations that are toxic to,or that produce detrimental physiological responses in human,plant, animal, or aquatic life"(San Diego Regional Water Quality Control Board 2021). Physical and chemical water quality data(Section 11.3)will be used in combination with benthic macroinvertebrate(Section 11.4)and periphyton bioassessment monitoring to determine whether the discharge of lanthanum-modified clay caused an exceedance of the Basin Plan narrative toxicity objective. Table 6. Periphyton sampling location descriptions. Site ID Location Description SLR-US* Upstream Upstream of Lake Henshaw on San Luis Rey River Downstream of Lake Henshaw Dam on the San Luis Rey SLR-DS* Downstream River between the dam and the Rey River Ranch (approximately 4.5 miles downstream of the dam) * Latitude and longitude will be determined following reconnaissance surveys to determine representative stream lengths for upstream and downstream comparison. Periphyton samples will be collected using Standard Operating Procedures (SOP)for the Collection of Field Data for Bioassessments of California Wadeable Streams:Benthic Macroinvertebrates,Algae, and Physical Habitat(Ode et al. 2016). Laboratory identification and quantification of specimens in the benthic stream algal communities shall follow the latest SWAMP Standard Operating Procedures for Laboratory Processing, Identification, and Enumeration of Stream Algae(Stancheva et al. 2015),which prescribes methods for separate analysis of 1)diatoms and 2) soft algae (including cyanobacteria). Algal Stream Condition Index (ASCI) scores shall be calculated using(Boyle et al. 2020): 1)the diatom index,D_ASCI, 2)the soft-algae index, S_ASCI, and 3)the"hybrid"index,H_ASCI,which incorporates metrics from both the diatom and soft-algae assemblages. Data shall be reported in the SWAMP format and uploaded into the California Environmental Data Exchange Network(CEDEN). March 2023 Stillwater Sciences 18 Technical Report Water Quality Management Plan—Lake Henshaw 12 SELF-MONITORING REPORT (SMR) A Self-Monitoring Report(SMR)will be prepared that will summarize and discuss results for all monitoring specified in this WQMP according to the schedule in Table 7. Table 7. Monitoring periods and reporting schedule. Report Sampling Frequency Monitoring Period Monitoring Period SMR Due Date Type Begins On 45 Background(Pre-event), Background(Pre- en days following the Event Event,and Post-event,as Notice of Enrollment event)through Post- end of the Monitoring noted above Authorization Date Event as noted above Period of each ' application event* All sampling events for Notice of Enrollment each application event Authorization Date or April 1st following one Annual occurring during the all data collected since One year year of application previous year the past Annual report events was submitted * Event SMR will follow the 45-day requirement for bioassessment monitoring if analytical laboratories are able to process samples and deliver results within this timeframe without additional fees. Event report shall include the following information: • The date, exact place,and time of sampling or measurements; • The individuals who performed the sampling or measurements; • The dates analysis were performed; • The individuals who performed the analyses; • The analytical techniques or methods used; and • Results of analyses. The annual report shall include the following components: a) A summary of all application events and monitoring results for the previous year including trend analysis; b) A discussion, evaluation,and interpretation of the data including interpretations and conclusions as to whether applicable receiving water limitations in this Order have been attained; c) A discussion addressing the questions proposed in Section 8.1 of this MRP; d) A list of potential sources of the reportable priority pollutant(s); e) A summary of all actions undertaken pursuant to the control strategy; f) A description of actions to be taken in the following year; and g) A certification statement that all receiving water monitoring data has been timely uploaded to CEDEN. March 2023 Stillwater Sciences 19 Technical Report Water Quality Management Plan—Lake Henshaw 12.1 Reporting Protocols The event and annual SMR shall report the results of analytical determinations for the presence of chemical constituents in a sample using the following reporting protocols: a) The SMR will include with each sample result the applicable Reporting Level(RL) and the current Method Detection Limit(MDL). b) Sample results greater than or equal to the reported RL shall be reported as measured by the laboratory(i.e.,the measured chemical concentration in the sample). c) Sample results less than the RL,but greater than or equal to the laboratory's MDL, shall be reported as"Detected,but Not Quantified,"or DNQ. The estimated chemical concentration of the sample shall also be reported. For the purposes of data collection,the laboratory shall write the estimated chemical concentration next to DNQ as well as the words "Estimated Concentration"(may be shortened to"Est. Conc."). The laboratory may, if such information is available,include numerical estimates of the data quality for the reported result.Numerical estimates of data quality may be percent accuracy(+/-a percentage of the reported value),numerical ranges(low to high),or any other means considered appropriate by the laboratory. d) Sample results less than the laboratory's MDL shall be reported as"Not Detected,"or ND. e) The analytical laboratories will be instructed to establish calibration standards so that the RL value(or its equivalent if there is differential treatment of samples relative to calibration standards)is the lowest calibration standard.Analytical data derived from extrapolation beyond the lowest point of the calibration curve will not be used. f) The Discharger shall arrange all reported data in a tabular format. The data shall be summarized to clearly illustrate whether the discharge is in compliance with receiving water limitations and BMP requirements. The Discharger is not required to duplicate the submittal of data that is entered in a tabular format within CIWQS. When electronic submittal of data is required and CIWQS does not provide for entry into a tabular format within the system,the Discharger shall electronically submit the data in a tabular format as an attachment.All reported data will be presented in a tabular format and contain data as specified in Tables 1 through 3. g) A cover letter will be prepared that clearly identify violations of the WDRs,discuss corrective actions taken or planned,and the proposed time schedule for corrective actions. Identified violations must include a description of the requirement that was violated and a description of the violation. h) The SMR report shall be electronically submitted using the State Water Board's California Integrated Water Quality System(CIWQS)Program website (https://www.waterboards.ca.gov/water issues/programs/ciwqs). i) Records will be retained for all monitoring information,including all calibration and maintenance records,copies of all reports,and records of all data used for a period of at least three (3)years from the date of the sample,measurement,report, or application. March 2023 Stillwater Sciences 20 Technical Report Water Quality Management Plan—Lake Henshaw 13 REFERENCES Beutel,M.W.,and S. Defeo. 2021. Lake Henshaw and Lake Wohlford Sediment Flux Study. Report to Stillwater Sciences,December 2021. Boyle, T.,R. D.Mazor,A. C. Rehn, S. Theroux,M.Beck,M. Sigala, C. Yang, P.R. Ode. 2020. Instructions for calculating bioassessment indices and other tools for evaluating wadeable streams in California: The California Stream Condition Index(CSCI),Algal Stream Condition Index (ASCI) and Index of Physical Integrity(IPI) SWAMP-SOP-2020-0001 Ode,P. R.,A. E. Fetscher,and L. B. Busse. 2016. Standard Operating Procedures(SOP)for the collection of field data for bioassessments of California wadeable streams: benthic macroinvertebrates, algae,and physical habitat. Ode,P.,A. Rehn,and J. May. 2005. A quantitative tool for assessing the integrity of southern coastal California streams. Environmental Management 35: 493-504. San Diego Regional Water Quality Control Board. 2021. Water Quality Control Plan for the San Diego Basin. San Diego, California. https://www.waterboards.ca.gov/sandiego/water issues/programs/basin_plan/ San Francisco Estuary Institute. 2023. California HABs portal.Website.https://fhab.sfei.org/ [Accessed February 2023]. Stancheva,R.,L. Busse, J.P.Kociolek,and R. G. Sheath. 2015. Standard Operating Procedures for Laboratory Processing,Identification, and Enumeration of Stream Algae. California State Water Resources Control Board Surface Water Ambient Monitoring Program(SWAMP) SOP- 2015-0003. Stillwater Sciences. 2022a. Lake Henshaw and Lake Wohlford Harmful Algal Blooms Management and Mitigation Plan. Technical Memorandum. Prepared for Vista Irrigation District and City of Escondido. Stillwater Sciences. 2022b.Assessment of August 2022 Algaecide Treatment Effectiveness for Lake Henshaw. Technical Memorandum. Prepared for Don Smith,Vista Irrigation District. Woodard,M. E., J. Slusark, and P. R. Ode.2012. Standard Operating Procedures for Laboratory Processing and Identification of Benthic Macroinvertebrates in California. California State Water Resources Control Board Surface Water Ambient Monitoring Program(SWAMP)Bioassessment SOP 003. March 2023 Stillwater Sciences 21 Technical Report Water Quality Management Plan—Lake Henshaw Appendices March 2023 St/l/water Sciences Technical Report Water Quality Management Plan—Lake Henshaw Appendix A Vertical Water Quality Profiles for Lake Henshaw March 2023 Stillwater Sciences Technical Report Water Quality Management Plan—Lake Henshaw Water Temperature (°C) 15 20 25 15 20 25 I I I I I I H-BL AM H-BL PM :! 2 - .. a' - 2 6 - - 6 10 - 41 IP i r - 10 14 - - 14 H-FD AM H-FD PM I f 2 : ::.:;4::.:,• ir r _ 6 10 - i i - 10 14 - - 14 H-MLAM H-MLPM lir 6 - try (TILI - 6 (1) 10 - - 10 a14 - - 14 H-NL AM_ H-NL PM r 2 - IV - 2 6 - _ - 6 10 - - 10 14 - - 14 HSL AM H-SL PM 2 - ) ir t-la e?? 4.411 ,,,,,---* - 2 10 - - 10 14 - , , , , , - 14 15 20 25 15 20 25 March (Pre-treatment) -- March (Post-treatment) May (Pre-treatment) May (Post-treatment) August(Pre-treatment) -- August (Post-treatment) Figure A-1. Lake Henshaw water temperature during algaecide effectiveness monitoring associated with the March, May, and August 2022 treatment events (Stillwater Sciences 2022b). March 2023 Stillwater Sciences A-1 Technical Report Water Quality Management Plan—Lake Henshaw pH 8.5 9.0 9.5 10.0 8.5 9.0 9.5 10.0 I I I I 1 I I I H-BL AM H-BL PM it 1,.. ,.; . 1: - 2 14 - f , , ' - 14 H-FD AM H-FD PM 2 - 4' i ''., .;,:,,e,e,,,}) - 2 10 - 0__,:d`: .4 if b - 10 14 - — - 14 H-ML AM H-ML PM 2 - '`'' (pJ - 2 Q 6 = _ 6 1:1) 10 - - 10 a14 - - 14 H-NL AM H-NL PM 2 - ` 1) .i,...) - 2 A 6 - 0)0rit - 6 10 - - 10 14 - - 14 HSL AM H-SL PM 2 - s rs' - 2 10 - - 10 14 - , , , I I , , , - 14 8.5 9.0 9.5 10.0 8.5 9.0 9.5 10.0 March (Pre-treatment) March (Post-treatment) May (Pre-treatment) May (Post-treatment) August(Pre-treatment) ° August (Post-treatment) Figure A-2. Lake Henshaw pH (standard units [s.u.]) during algaecide effectiveness monitoring associated with the March, May, and August 2022 treatment events (Stillwater Sciences 2022b). March 2023 Stillwater Sciences A-2 Technical Report Water Quality Management Plan-Lake Henshaw Turbidity (FNU ) 50 100 150 50 100 150 1 I I I I I H-BL AM H-BL PM 2 - - 2 ; 6 - -.. - 6 yaw c.$..�«; 14 - (:r - - 14 H-FD AM H-FD PM - 2 ;, , 10 - - _.e' , y - 1 0 14 - - 14 H-ML AM H-ML PM CD10 - - 10 a14 - - 14 H-NLAM H-NLPM 2 - t . .:�' - 2 6 = VI -;41 - 6 10 - °`' - 1 0 14 - - 14 HSL AM H-SL PM 2 - t - 2 6 - - 6 10 - - 1 0 14 - i r r t - 14 50 100 150 50 100 150 March (Pre-treatment) -- March (Post-treatment) May (Pre-treatment) May (Post-treatment) August(Pre-treatment) August (Post-treatment) Figure A-3. Lake Henshaw turbidity (Formazin Nephelometric Units [FNU]) during algaecide effectiveness monitoring associated with the March, May, and August 2022 treatment events (Stillwater Sciences 2022b). March 2023 Stillwater Sciences A-3 Technical Report Water Quality Management Plan—Lake Henshaw Appendix B Supplementary Information March 2023 Stillwater Sciences Technical Report Water Quality Management Plan—Lake Henshaw The following are additional questions posed by the Regional Board via email on 3/30/2023 regarding the WQMP. The District's responses follow each question. Q1. During which months will lanthanum-modified clay be applied to Lake Henshaw?What are factors that are taken into consideration?It'd be best to provide a range. This is in response to the following requirement in section 5.4 of the permit: • The time period for application of lanthanum-modified clay with particular attention paid to seasonal storm variations, seasonal water chemistry fluctuations, seasonal water volume fluctuations, and recreational uses. In 2023,the first(May)treatment will be a light dose (approximately 1-2 mg/L lanthanum- modified clay)targeting water column orthophosphate associated with dying cells from algaecide treatment a few days prior. Since the May 2023 treatment is not targeting lake sediments,the entire treatable4 area of the lake will be treated(approximately 750 acres). The second July/August treatment is a targeting sediment phosphorus and is focused on roughly 400 acres of the deepest/mid-depth sediments in the lake that contain the highest levels of easily-released phosphorus(see dark and mid-blue shaded areas in Figure B-1). The second July/August treatment dose will be approximately 7 mg/L lanthanum-modified clay. Treatment months in future years will be determined based on lake response to the 2023 treatments and the below seasonal and recreational considerations. With respect to seasonal storm variations,treatments would occur in spring, summer, or fall, which is outside the period of typical wintertime precipitation/storm events. Figure 2-11 on page 21 of the Technical Report illustrates typical seasonal precipitation patterns for Lake Henshaw. Additionally,WQMP page 10 states"To prevent the lanthanum-modified clay applied to Lake Henshaw from discharging to downstream waterbodies,the controllable valves at the Henshaw Dam intake tower will be closed during a lanthanum-modified clay application to control the extent,if any,that the receiving waters of the San Luis Rey River would be affected by residual lanthanum-modified clay.Applications will not occur during a time when heavy precipitation would be likely to result in reservoir spill events. The reservoir has not been close to capacity in 20 years(since the early to mid-1990s). Currently,the application of lanthanum-modified clay is planned for when Lake Henshaw is between 5%-60%capacity, such that the potential for unplanned reservoir discharge due to storm activity is extremely small." Regarding seasonal water chemistry fluctuations,WQMP page 10 states"Lanthanum-modified clay applications will target late spring, summer, and fall periods when orthophosphate is in the water column and/or likely to be released from bottom sediments."This is a general statement; specific treatment times will vary each year depending on lake conditions. For 2023,the District is planning a light-dose (approximately 1-2 mg/L lanthanum-modified clay)May treatment that targets water column orthophosphate associated with dying cells from an algaecide treatment a few days prior. Since the May treatment is not targeting sediments,there is no particular area associated with that treatment(i.e.,if the treatable area of the lake is—750 acres,then the District would treat that area). Treating the lake in the late spring is intended to bind orthophosphate in the water column and keep it from being used by cyanobacteria to bloom in the summer. The second planned treatment in July/August(approximately 7 mg/L lanthanum-modified clay)is targeting sediment phosphorus and the District is focusing on roughly 400 acres of the deepest/mid-depth sediments in the lake that contain the highest levels of easily-released phosphorus. The July/August period is typically a period when orthophosphate concentrations 4 Surface area of the lake that is sufficiently deep(i.e.,>2-3 feet water depth)to allow boat passage. March 2023 Stillwater Sciences B-1 Technical Report Water Quality Management Plan—Lake Henshaw increase in the lake(see WQMP Figure 3) due to internal loading from low oxygen bottom waters and sediments. A sediment-focused treatment at this time in 2023 would bind some of the easily- released phosphorus,which is in the form of orthophosphate, and reduce the potential for cyanobacteria blooms later in the summer and through the fall of 2023. See also Technical Report discussions of Lake Henshaw Water Quality—Phosphorus(Section 2.2.3,pages 29-51),Existing Conditions Conceptual Model—Lake Henshaw(Section 2.5.1.1,2.5.2.1,pages 84-87). Sediment-focused treatments in future years would bind more and more of the easily-released phosphorus. With respect to seasonal water volume fluctuations,Figure 2-9 (Technical Report,page 19) shows that the largest water volume fluctuations in Lake Henshaw are related to water year rather than season. As the scale of Figure 2-9 does not clearly show seasonal fluctuations,Figure B-1 is expanded for the period 2016-2020 and shows the highest lake storage values during winter and spring of most years, during and following wintertime precipitation/storm events.Lanthanum- modified treatments in spring, summer, or fall will occur when the lake is relatively low compared with typical winter lake levels,where lake volume at the time of application will be factored into dosing rates. The current rainy season has raised lake volume to about 30,000 af, or about 60%of storage. Lake volume is expected to be reduced through the summer and fall. 80 70 Iv 60 to L0 50 _c 40 C o 30 E 0 20 IL 10 0 CD LD V) LD r� r� r-- r` oo oo oo 0o cn cn cm cn o 0 0 0 a-1 c-I c-I c-I c-I c-I c-1 c-I r-I r-I a--1 a--1 a--1 a--1 a--1 a--1 N N N N L — 4"' C L — 4"' C L — +L' C L — 4L' C L — - fD 0_ 7 V CD Q 7 U f9 0_ 7 V f9 0_ 7 U (73 0_ 7 U Q O Q -' O Q O Q O Q O Figure B-1. Lake Henshaw end-of-month storage in thousand acre feet (TAF) for the period 2016-2020. Regarding recreational uses, designated recreational beneficial uses(contact [fishing only] and noncontact)in Lake Henshaw are currently adversely impacted by elevated cyanotoxin concentrations during HABs. Additionally,as stated on page 6 of the WQMP,the La Jolla Band of Indians also benefits from the passive recreational use of water released from Lake Henshaw to the San Luis Rey River as it flows through a campground operated on their reservation lands. Based on consideration of numerous potential in-and out-of-lake management methods to control HABs,phosphorus inactivation/chemical sediment sealing through the use of lanthanum- modified clay was selected as one in a set of suitable methods to reduce HABs and improve water quality in Lake Henshaw(see also WQMP,page 3,top paragraph). While Lake Henshaw will be closed to recreational use during lanthanum-modified clay application to allow application boats to operate without interference by recreational boating traffic,closure periods would be limited to 1-4 days per treatment and would likely not occur more than 2-3 times per year. The timing of March 2023 Stillwater Sciences B-2 Technical Report Water Quality Management Plan—Lake Henshaw lanthanum-modified clay treatments in Lake Henshaw will be coordinated with the La Jolla Band to minimize timing-related impacts to downstream recreational releases. Q2. What practices will be implemented to prevent spills,leaks,and unintended discharges of lanthanum-modified clay during transport, staging,and storage?This is in response to the following requirement in section 5.4 of the permit: • The "good housekeeping"measures that will be implemented to prevent spills, leaks, and unintended discharges of lanthanum-modified clay during transport, staging, and storage. Lanthanum-modified clay will be transported in sealed plastic bags using flatbed trucks and stored on pallets near the lake boat launch for a few hours(i.e., same-day use) or for up to two days prior to use. If the clay product is spilled during transport, staging, or short-term storage, then the contractor would sweep up the product to minimize unintended discharges to the surrounding environment. If rain is in the near-term forecast for application dates,then secondary containment would be used for transport and staging activities as well as short-term storage(i.e., a few hours up to two days).Note that the truck drivers are trained in hazardous materials transport. Q3. Section 8.2 of the Monitoring and Reporting Program(Page E-5) specifically says the following: • No less than one sediment and one surface water sample shall be collected for every 10 surface acres (or fraction thereof)being treated. The sample locations described in section 11.1 of the WQIP must be adjusted to reflect this. As discussed in WQMP Section 11.1,wind mixing of the water column occurs regularly and throughout the lake. Given the high degree of mixing, lake sample locations shown in Figure 4, Table 2, and Figure B-2 are expected to be representative of water quality conditions in Lake Henshaw prior to lanthanum-modified clay application and within the treatment area,where the latter would include either a portion of the lake or the entire lake, depending on the lanthanum- modified clay dose. Even with multiple boats, it would be operationally infeasible to sample surface water before, during, and after treatment every 10 surface acres in a lake as large as Henshaw and given the high degree of horizontal and vertical mixing in the lake,this level of sampling is not necessary to accurately characterize water quality response to treatment. March 2023 Stillwater Sciences B-3 Technical Report Water Quality Management Plan—Lake Henshaw LANTHANUM-MODIFIED CLAY TREATMENT IN LAKE HENSHAW Lost Lake ° ° Big Lake 0 ° o 0 o• • °11 Lake Henshaw °`ro H•6 �s H. 0 0 c° ' o tea° 0 H.BL _4 L f r SLR.DS H-7 0 • o ° \-.,P Mo rO9uey cr.,. 0 P4 Lake Henshaw Sampling Locations nay so°rces: Map Location Roads,°ties,waterbodies:ESRI 2016 O Upstream sampling site Perennial stream Landowner Landowners:CPAD• oLAns Ditch system,wells:Vista geles Qd o Palm • Downstream sampling site Intermittent stream L Warner Ranch ® Springs O Lake sampling site i Lake area at 2,650.0 ft elevation • Well FS Lake area at 2,655.0 ft elevation cr, r c ingnenn © e i Ditch system lake area at 2,690.6 ft elevationWr �'o.s o, os r•r. San Diego° co c s°nw.wr sa..m Figure B-2. Lake Henshaw sampling locations including depth intervals for deep, mid-depth, and shallow sediments. March 2023 Stillwater Sciences B-4 APPENDIX C Required Grant Forms (Attachment D) CERTIFICATION REGARDING DEBARMENT, SUSPENSION, INELIGIBILITY AND VOLUNTARY EXCLUSION CONTRACTOR/APPLICANT: Stillwater Ecosystem,Watershed&Riverine Sciences(DBA Stillwater Sciences) (1) The contractor certifies, by submission of this proposal, that it and its principals: (a) Are not presently debarred, suspended, proposed for debarment, declared ineligible, or voluntarily excluded by any Federal agencies; (b) Have not within a three year period preceding this proposal been convicted of or had a civil judgment rendered against them for commission of fraud or a criminal offense in connection with obtaining, attempting to obtain, or performing a public (Federal, State or local) transaction or contract under a public transaction; violation of Federal or State antitrust statutes or commission of embezzlement, theft, forgery, bribery, falsification or destruction of records, making false statements, or receiving stolen property; (c)Are not presently indicted for or otherwise criminally or civilly charged by a governmental entity (Federal, State or local) with commission of any of the offenses enumerated in paragraph (1)(b) of this certification; and (d) Have not within a three year period preceding this application/proposal had one or more public transactions (Federal, State or local) terminated for cause or default. (2) Where the contractor is unable to certify to any of the statements in this certification, such contractor shall attach an explanation to this proposal*. *Exceptions will not necessarily result in denial of award, but will be considered in determining bidder responsibility. For any exception noted, indicate to whom it applies, initiating agency, dates of action, and the type of violation. CERTIFICATION I, the official named below, hereby swear that I am duly authorized legally to bind the contractor or loan recipient to the above described certification. I am fully aware that this certification, executed on the date and in the county below, is made under penalty of perjury under the laws of the State of California. OFFICIAL'S NAME: Sapna Khandwala DATE EXECUTED: May 29, 2026 EXECUTED IN COUNTY OF: Alameda CONTRACTOR/APPLICANT SIGNATURE: JTAA- TITLE: President and CEO CERTIFICATION REGARDING LOBBYING CONTRACTOR/APPLICANT: Stillwater Ecosystem,Watershed&Riverine Sciences(DBA Stillwater Sciences) The undersigned certifies to the best of his or her knowledge and belief that: (1) No federal appropriated funds have been paid or will be paid, by or on behalf of the undersigned, to any person for influencing or attempting to influence an officer or employee of an agency, a Member of Congress, an officer or employee of Congress, or an employee of a Member of Congress in conjunction with the awarding of any Federal contract, the making of any Federal grant, the making of any Federal loan, the entering into of any cooperative agreement, and the extension, continuation, renewal, amendment, or modification of any Federal contract, grant, loan, or cooperative agreement. (2) If any funds other than Federal appropriated funds have been paid or will be paid to any person for influencing or attempting to influence an officer or employee of any agency, a Member of Congress, an officer or employee of Congress, or an employee of a Member of Congress in connection with this Federal contract, grant, loan or cooperative agreement, the undersigned shall complete and submit Standard Form LLL, Disclosure Form to Report Lobbying, in accordance with its instructions. CERTIFICATION I, the official named below, hereby swear that I am duly authorized legally to bind the contractor or loan recipient to the above described certification. I am fully aware that this certification, executed on the date and in the county below, is made under penalty of perjury under the laws of the State of California. OFFICIAL'S NAME: Sapna Khandwala DATE EXECUTED: May 29, 2026 EXECUTED IN COUNTY OF: Alameda CONTRACTOR/APPLICANT SIGNATURE: 1 -1)VA/t/4).A.T4A^-- TITLE: President and CEO N/A - STILLWATER ECOSYSTEM, WATERSHED & RIVERINE SCIENCES (DBA STILLWATER SCIENCES) HAS NO LOBBYING ACTIONS TO DISCLOSE DISCLOSURE OF LOBBYING ACTIVITIES Approved by OMB Complete this form to disclose lobbying activities pursuant to 31 U.S.C. 1352 0348-0046 (See reverse for public burden disclosure.) 1. Type of Federal Action: 2. Status of Federal Action: 3. Report Type: a. contract a. bid/offer/application a. initial filing b. grant b. initial award b. material change c. cooperative agreement c. post-award For Material Change Only: d. loan year quarter e. loan guarantee date of last report f. loan insurance 4. Name and Address of Reporting Entity: 5. If Reporting Entity in No.4 is a Subawardee, Enter Name Prime Subawardee and Address of Prime: Tier , if known: Congressional District, if known: Congressional District, if known: 6. Federal Department/Agency: 7. Federal Program Name/Description: CFDA Number, if applicable: 8. Federal Action Number,if known: 9.Award Amount,if known: 10.a. Name and Address of Lobbying Registrant b. Individuals Performing Services(including address if (if individual, last name, first name, MI): different from No. 10a ) (last name, first name, MI): 11 Information requested through this form is authorized by title 31 U.S.C.section 1352. •This disclosure of lobbying activities is a material representation of fact upon Signature: which reliance was placed by the tier above when this transaction was made or entered into. This disclosure is required pursuant to 31 U.S.C. 1352. This Print Name: information will be reported to the Congress semi-annually and will be available for public inspection.Any person who fails to file the required disclosure shall be subject Title: to a civil oem mlt.of,.et less tl t$10.000 a,d .ot me,a ll.a,.$100.000 fo ea.f such failure. Telephone No.: Date: Federal Use Only: Authorized for Local Reproduction Standard Form LLL(Rev.7-97) NON-DISCRIMINATION CLAUSE CONTRACTOR/APPLICANT: Stillwater Ecosystem, Watershed & Riverine Sciences (DBA Stillwater Sciences) 1. During the performance of this contract, contractor and its subcontractors shall not unlawfully discriminate against any employee or applicant for employment because of sex, race, religion, color, national origin, ancestry, physical disability (including HIV and AIDS), mental disability, medical condition (cancer), marital status, age (over 40) or denial of family care leave. Contractors and subcontractors shall insure that the evaluation and treatment of their employees and applicants for employment are free of such discrimination and harassment. Contractors and subcontractors shall comply with the provisions of the Fair Employment and Housing Act (Government Code Section 12900 (a-f) et seq.) and the applicable regulations promulgated thereunder (California Administrative Code, Title 2, Section 7285.0 et seq.). The applicable regulations of the Fair Employment and Housing Commission implementing Government Code, Section 12900 (a-f), set forth in Chapter 5 of Division 4 of Title 2 or the California Administrative Code are incorporated into this contract by reference and made a part hereof as if set forth in full. Contractor and its subcontractor shall give written notice of their obligations under this clause to labor organizations with which they have a collective bargaining or other agreement. 2. The contractor shall include the nondiscrimination and compliance provisions of this clause in all subcontracts to perform work under the contract. CERTIFICATION I, the official named below, hereby swear that I am duly authorized legally to bind the contractor or loan recipient to the above described certification. I hereby certify that the Contractor will abide by the above requirements. I am fully aware that this certification, executed on the date and in the county below, is made under penalty of perjury under the laws of the State of California. OFFICIAL'S NAME: Sapna Khandwala DATE EXECUTED: May 29, 2026 EXECUTED IN COUNTY OF: Alameda CONTRACTOR/APPLICANT SIGNATURE: JT,AA- TITLE: President and CEO Ce---C------,___--,_ Stillwater Sciences www.stillwatersci.com Arcata,CA Berkeley,CA Sacramento• ,CA Los Angeles,CA • • 707-822-9607 510-848-8098 916-964-9173 213-336-0001 Morro Bay,CA Ventura,CA Portland• ,OR Boulder• ,CO Fort Collins,CO • • 805-570-7499 213-336-0001 503-267-9006 720-656-2330 970-840-9297 Stillwater Sciences General Manager Paul Hughes Directors 44ex • 1950 • w$ te Nick Haven _ ou th ShaneRomsos Joel Henderson Sheehan Fublic Utility District Kelly Nick Exline 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 6h TO: Board of Directors FROM: Dan Arce, Laboratory Director MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: Quality Control Officer Full-Time Position REQUESTED BOARD ACTION: Approve the addition of a new full-time position by converting the current Laboratory Quality Control Officer from a part time/temporary position to a full-time/permanent position. DISCUSSION: In May 2020, the California State Water Control Board enacted legislation requiring all environmental laboratories that report permit discharge compliance or drinking water data to implement the TNI-2 Standard. TNI-2 mandates that every laboratory designate a "Quality Manager" with authority and independence to ensure that the laboratory's Quality Management System is properly implemented and continuously maintained. This person must operate independently of the Laboratory Director to preserve objectivity and impartiality. The District Laboratory named this role "Quality Control Officer" (QCO). In August 2023, the laboratory created a QCO position on a limited-term, part-time basis. The Local 39 Operating Engineers Union agreed to this arrangement on the condition that the position be phased out by August 2026. Due to the nature of part-time availability, recurring gaps in data quality, especially in regard to time-sensitive projects, have been inevitable. Documents are often left incomplete until the QCO's next scheduled shift. Laboratory staff have frequently had the need to contact the QCO during off work hours to be able to finish projects satisfactorily. A significant share of the QCO's duties have been delegated to me, the Laboratory Director, and to Laboratory Technicians, requiring them to work overtime and diverting them from their primary functions in the laboratory. The QCO's required duties include completing all District mandated training, attendance of all laboratory staff meetings and completing continuing education credits necessary to maintain Laboratory Analyst certification. These non-specific QCO obligations alone consume a substantial portion of the current position's 1,000-hour Dan Arce June 18, 2026 Page 2 annual cap. Meanwhile, core QCO functions such as staying current with all the analyses performed by the laboratory, reviewing worksheets, developing Standard Operating Procedures, and drafting Sampling Plans, demand much more than the current limited time allows. The part-time structure does not provide sufficient time to fulfill all the responsibilities that the TNI-2 Standard requires. A full-time QCO would position the District's Laboratory to 1) maintain accreditation status without any major findings; 2) increase stakeholder confidence in the laboratory's data quality; and 3) reduce regulatory scrutiny and strengthen the District's credibility with permit authorities. A full-time QCO would also allow the broader Laboratory team to focus on routine laboratory and operational work rather than quality remediation. If the QCO position is allowed to expire in August 2026, the QCO designation would revert to an existing full-time analyst, effectively eliminating a Laboratory Technician position, leaving the laboratory understaffed. The District may be compelled to outsource analytical work to contract laboratories, increasing costs and turnaround time, while reducing control over data quality. Just as important, the risk of non- compliance and the potential outsourcing of work represent a far greater long-term financial exposure. The overtime generated by distributing QCO duties to other staff as well as outsourcing work are costs that would be essentially eliminated by the creation of this position. Additionally, a part-time lab aide position would be eliminated to offset the cost of the position. If approved, the QCO position would remain tied to the Laboratory Technician II salary scale. SCHEDULE: Upon Board Approval COSTS: The position already exists as part-time. Additional costs would be offset by reduced overtime and the elimination of a part-time Laboratory Aide position. ACCOUNT NO: Various payroll account numbers BUDGETED AMOUNT AVAILABLE: Cost of the position is $139,305 (Currently incorporated into the 2026/2027 approved budget) IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ❑ Yes ❑ No N/A ATTACHMENTS: N/A CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer/Water GENERAL MANAGER: YES r NO CHIEF FINANCIAL OFFICER: YES NO General Manager Paul Hughes Directors 44ex • 1950 • w$ te _ South T Nick Haven Shane Romsos Joel Henderson _ _ y Sheehan Fublic Utility District KellNick Exline _ I 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 12a TO: Board of Directors FROM: Paul Hughes, General Manager MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: Conference with Legal Counsel - Existing Litigation REQUESTED BOARD ACTION: Direct Staff DISCUSSION: Pursuant to Section 54956.9(d)(1) of the California Government code, Closed Session may be held for conference with legal counsel regarding existing litigation: Yolo County Superior Court Case CV 2021-1686, Alpine County vs. South Tahoe Public Utility District; et al. SCHEDULE: N/A COSTS: N/A ACCOUNT NO: N/A BUDGETED AMOUNT AVAILABLE: N/A IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ❑ Yes ❑ No N/A ATTACHMENTS: N/A CONCURRENCE WITH REQUESTED ACTION: CATEGORY: General GENERAL MANAGER: YES fir NO CHIEF FINANCIAL OFFICER: YES NO General Manager Paul Hughes Directors 44ex • 1950 • w$ te _ South T Nick Haven Shane Romsos Joel Henderson _ _ y Sheehan Fublic Utility District KellNick Exline _ I 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 Phone 530 544-6474•Fax 530 541-0614•www.stpud.us BOARD AGENDA ITEM 12b TO: Board of Directors FROM: Liz Kauffman, Human Resources Director MEETING DATE: June 18, 2026 ITEM- PROJECT NAME: General Manager Recruitment REQUESTED BOARD ACTION: Direct Staff DISCUSSION: Pursuant to Government Code Section 54957(b)(1) consider the appointment of a public employee. Provide staff with recruitment direction. SCHEDULE: Pursuant to Board Direction COSTS: N/A ACCOUNT NO: N/A BUDGETED AMOUNT AVAILABLE: N/A IDENTIFIED CAPITAL IMPROVEMENT PROJECT (CIP): ❑ Yes ❑ No N/A ATTACHMENTS: N/A CONCURRENCE WITH REQUESTED ACTION: CATEGORY: Sewer/Water GENERAL MANAGER: YES fir NO CHIEF FINANCIAL OFFICER: YES NO