The URL can be used to link to this page

Home My WebLink AboutSTPUD_Pioneer Waterline Initial StudyINITIAL STUDY for the South Tahoe Public Utility District Pioneer Trail Waterline and PRV Upgrade Project PROJECT NAME South Tahoe Public Utility District Pioneer Trail Waterline and PRV Upgrade Project LEAD AGENCY The South Tahoe Public Utility District (District), located in South Lake Tahoe, California, will serve as the Lead Agency for the Pioneer Trail Waterline and PRV Upgrade Project for this Initial Study in accordance with the California Environmental Quality Act (CEQA). This Initial Study was prepared under contract with the District by: Sierra Ecotone Solutions LLC PO Box 1297 Zephyr Cove, NV 89448. PROJECT CONTACT INFORMATION If you have further questions or require additional information regarding this matter, please contact Julie Ryan, Engineering Department Manager at (530) 544-6474. South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 Email: irvan@stpud.dst.ca.us SIERRA ECOTONE SOLLRIONS 1 ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED If environmental factors are checked below, there would be at least one impact that is a "Potentially Significant Impact" as indicated by the checklist in Chapter 2 of this Initial Study. L_. Aesthetics ❑ Agricultural Resources ❑ Air Quality • Biological Resources ❑ Cultural Resources ❑ Geology Resources • Greenhouse Gas Emissions ❑ Hazards and Hazardous Materials E Hydrology/Water Quality Land Use Planning ❑ Mineral Resources L: Noise Population/Housing ❑ Public Services ❑ Recreation Transportation/Traffic ❑ Utilities/Service Systems ❑ Mandatory Findings of Significance SIERRA ECOTONE SOUITIONS 1.1 INTRODUCTION AND PROJECT BACKGROUND 1.1. A Purpose and Need The South Tahoe Public Utility District (District) owns and operates the water distribution system and waste water collection and treatment system within its Service Area in the City of South Lake Tahoe and unincorporated areas of El Dorado County (Figure 1). The District regularly conducts condition assessments of existing water facilities to identify opportunities to optimize the system to better provide reliable water services safely, efficiently and cost effectively. The Pioneer Trail Waterline and PRV Upgrade Project (Project) would install new water pipeline, nine new and two replacement fire hydrants, and replace/relocate two existing pressure regulating stations to improve capacity and reliability, enhance fire protection, and provide an increased level of service within the surrounding community. The Project Area is located along Pioneer Trail from Marshall Trail west to Washoan Blvd (Figure 2). Pioneer Trail is an important travel route between Meyers and Stateline, Nevada that bypasses central South Lake Tahoe. The proposed new waterline in Pioneer Trail is approximately 1.5 miles in length and would become an important backbone of the water system. The 16-inch pipeline would significantly improve fire flows to multiple neighborhoods and increase overall water system efficiency and capacity to certain neighborhoods. The new waterline also allows for the proposed installation of nine new fire hydrants along the important urban-wildland interface of Pioneer Trail. The hydrants would be installed to meet fire standards that require developed properties to be no more than 250 feet from a fire hydrant and undeveloped properties to be no more than 500 feet from a fire hydrant. Also in conjunction with the waterline installation, two new pressure regulating valve (PRV) stations would be installed. PRVs have a critical role in water delivery systems because the valve reduces incoming high pressure to a level that is suitable for downstream delivery. Proposed new PRV Station #1 would be located at the intersection of Pioneer Trail and Jicarilla and would provide a second feed from the Montgomery Estates Zone to both the Susquehana Zone and the Pine Valley Zone to mitigate existing fire flow deficiencies. Proposed PRV Station #2 would re- locate two existing PRVs (PT/Kokanee and PT/Marshall) located in below -grade vaults on a curve in the traffic lanes Pioneer Trail would into a single above -ground station on Marshall Trail, which is a much lower traffic side street. The existing PRVs were constructed in the late 1980's in a dangerous location and are currently nearing the end of their useful lives. A new PRV is needed in the same location at Marshall Trail to provide a secondary feed to over 100 customers from the Montgomery Estates Zone to the Stateline Zone in the Meadow Lakes Neighborhood. 1.1. B Project Background In 2015, the District completed an assessment of its water system service that serves over 16,000 residential and commercial customers to determine how the system could be optimized to provide reliable water services more safely, efficiently and cost effectively. The result was the 2016 Water SIERRA ECOTONE SOLLRIONS 3 System Optimization Plan (WSOP) that is used by the District to guide its operations and capital investments to meet the goal of maintaining a reliable potable water service. The WSOP included a comprehensive condition assessment of existing water facilities that identified deficiencies within the water system. The District used the results of the assessment to develop a prioritized Capital Improvement Program (CIP) to correct deficiencies in water system condition, capacity, and Level of Service (LOS). On an annual basis, the District presents an Annual Plan Update to the CIP that identifies and prioritizes capital projects based on current needs and the adopted budget. The annual plan document is intended to be a desktop resource for basic information regarding the scope, cost, and need for proposed projects. The 2021 annual update identified the proposed Pioneer Trail Waterline and Facilities Upgrade Project as a high priority project for implementation in 2024. 1.1.0 Project Location The Project is located on the south shore of Lake Tahoe in the within unincorporated areas of El Dorado County (Figure 1). The Project Area (Figure 2) is located along Pioneer Trail from Marshall Trail west to Washoan Blvd. Pioneer Trail is an important travel route between Meyers and Stateline, Nevada that bypasses central South Lake Tahoe. The route is through residential neighborhoods and open forest. Trout Creek passes under Pioneer Trail via culvert just east of Golden Bear Trail. The Project Area is contained within the South Lake Tahoe United State Geological Society (USGS) 7.5 Minute Quadrangle Topographic Map and occurs within Township 12N Range 18E in Sections 10 and 15 on the Mt Diablo Meridian. 1.1.11) General Plan Designation, Zoning and Surrounding Land Use Land use within the Project Area is primarily residential with surrounding National Forest land. There are 3 relevant TRPA Plan Area Statements in effect within the Project Area for the neighborhoods of Tahoe Paradise Washoan, Golden Bear, and Montgomery Estates. Lake Valley Fire Protection District Station 6 is located at the corner of Golden Bear and Pioneer Trail and Sierra House Elementary School is located to the east of Marshall Trail, just outside of the Project Area. SIERRA ECOTONE SOLLRIONS 4 Placer El Dorado N//// S Miles 0 3.5 7 Truckee : � _ la _ Nevada j r ----------------------- ?"o." co � , i Kings r— I-J Carson City Carson City — — �� ------ Douglas 1 �+c 89 South Lake�207 Tahoe .� I Project Area v I 89 88 89 3 i Kirkwood Markleeville e!' . f Legend - Project Area TRPA Boundary STPUD Service Area � — —i State Boundry Cityof South Lake Tahoe L_—_— I County Boundary Pioneer Waterline Replacement Project Figure 1. Project Vicinity SIERRA ECOTONE SOLUTIONS Sources: STPUD, TRPA, USGS. Map date: March 2, 2022 This Page Intentionally Left Blank ® SIERRA ECOTONE SOLUTIONS Sources: STPUD, TRPA, USGS. Map date: March 2, 2022 This Page Intentionally Left Blank ® SIERRA ECOTONE SOLUTIONS 1.2 DESCRIPTION OF PROJECT The purpose of the Pioneer Trail Waterline and Facilities Upgrade Project (Project) is to provide an increased level of service and enhanced fire protection capability. The District proposes to install new water pipeline in Pioneer Trail to increase water system reliability and improve fire flows. Pioneer Trail is an important urban-wildland interface and new fire hydrants would also be installed to meet current fire standards. In conjunction with the new waterline installation, two new pressure regulating valve (PRV) stations would be installed. The new PRV stations are needed to mitigate existing fire flow deficiencies and to provide several isolated neighborhoods with improved flows and supplemental feeds. Each of these components are described in further detail below. 1.2.A Project Components Pioneer Trail Waterline This portion of the Project proposes installation of approximately 1.5 miles of new 16-inch waterline within Pioneer Trail from Susquehana Drive (Pine Valley Zone) east to Marshall Trail (Montgomery Estates Zone). This project will loop the distribution system and improve fire flow to approximately 1,000 customers in the Pine Valley and Susquehana Zones. The proposed main waterline would be 16" ductile iron pipe (DIP) that would connect to an existing 8-inch steel water main on Susquehana Drive. The pipeline would be installed within the roadway at a minimum depth of 42-inches. In addition to the pipeline, a total of 5 residential water customers will have water services replaced. In addition, approximately 1,500 linear feet of 10-inch aging steel waterline will be replaced with a new 12-inch C900 PVC waterline on Pioneer Trail between Golden Bear Trail and Marshall Trail. A new 12-inch C900 PVC waterline of 460 feet would be installed to connect the new proposed PRV Station #2 on Marshall Trail (see below) to Kokanee Trail. This new waterline would also replace approximately 280 feet of existing 8 and 10-inch steel pipe on both streets. The contractor will comply with California Division of Drinking Water standards for installation of new water mains. Each completed section would be pressure tested for leakage and all of the new pipe will be disinfected per AWWA (American Water Works Association) Standards. New sections of waterline would be tied into the existing system only after testing and disinfection. Upon completion of the install, the trenches would be backfilled and the roadway replaced. Existing guardrail and signage would be protected throughout construction along with any existing curb and gutter. New Fire Hydrant Installation The installation of new fire hydrants within the Service Area is necessary to meet fire standards that require developed properties to be no more than 250 feet from a fire hydrant and undeveloped properties to be no more than 500 feet from a fire hydrant. A total of nine new fire hydrants would be installed along Pioneer Trail between Susquehana Drive and Marshall Trail. An existing hydrant at Marshall Trail and Cattleman's Trail would also be replaced as well as a hydrant at SIERRA ECOTONE SOUITIONS 0 Marshall Trail and Pioneer Trail. Each hydrant would be connected to the new waterline via a 6- inch fire hydrant lateral and gate valve off of the hydrant tee. Pressure regulating stations Two new pressure regulating stations equipped with pressure regulating valves (PRVs) are proposed to be installed. PRVs have a critical role in water delivery systems because the valve reduces incoming high pressure to a level that is suitable for downstream delivery. Proposed new PRV Station #1 would be located at the intersection of Pioneer Trail and Jicarilla. The proposed Pine Valley PRV would have a 2-inch domestic and 12-inch fire PRV and the new Susquehana PRV would have a 2-inch domestic and 6-inch fire PRV. The PRV station would regulate flows coming from the Montgomery Estates Zone to the Susquehana Zone and the Pine Valley Zone via the new Pioneer Trail waterline and would provide a secondary feed that mitigates existing fire flow deficiencies. The PRVs would be installed on a concrete pad and enclosed in a pre -fabricated aluminum box. Proposed PRV Station #2 is located on Marshall Trail and would house the Kokanee, Marshall, and Stateline PRVs each equipped with a 2-inch domestic PRV and an 8-inch fire PRV The existing Kokanee and Marshall PRVs are the sole source of water supply to approximately 330 customers in the Kokanee and Golden Bear Zones. However, the PRVs were constructed in the late 1980's and are currently nearing the end of their useful lives. They are located in below -grade vaults on a curve in the high traffic lanes of Pioneer Trail and these would be abandoned in place and the new PRVs installed in the proposed above -ground Station #2 on Marshall Trail, which is a much lower traffic side street. The new Stateline PRV is proposed to connect the Montgomery Estates Zone and provide a secondary feed to over 100 customers located in the Meadow Lakes Neighborhood. The proposed PRVs would be installed on a concrete pad and enclosed in a pre- fabricated aluminum box. At the proposed locations the site would be cleared and grubbed to accommodate the concrete pad for the new stations. The new stations are proposed to be pre -fabricated insulated and heated enclosures construction of marine grade aluminum in a dark green color. The enclosures are designed to provide protection from freezing and vandalism and also easy access for maintenance and testing. Instrumentation and communication panels with an antenna would also be installed on the concrete pads at each of the stations. The portion of the system being replaced would generally remain in service until the new system has been tied in and then the old system would be abandoned in place. 1.2.113 Construction Phasing, Schedule and Equipment Construction is planned for 2024 and is anticipated to occur within one TRPA grading season between May 1st to October 15th. The PRV stations would be built in conjunction with the water pipeline installations and all new components would be pressure tested and disinfected at the same time. When testing is complete, the new components would be tied in with the existing system. (6.1 ECOTONE SOLLRIONS 1U The contractor shall comply with the TRPA standard conditions of approval. Construction that is not completed during the TRPA construction season for earth moving activities between May 1 st and October 15t" would require a TRPA Grading Season Exception. On -site work would be performed from 8 am to 6 pm Monday through Friday. Work outside these hours would be approved by the District a minimum of 48-hours before the abnormal working hours are scheduled to begin. General construction equipment that would be utilized for waterline projects include excavator, mini -excavator, loader, water truck, service vehicles, small remote sheep's -foot compactor, vacuum truck, sweeper, milling machine, smooth drum compactor, and a paving machine. All but the paving equipment (the last 3 on the list) are used every day. 1.2.0 Earthwork and Excavations Earthwork and excavations that result in temporary disturbance will be necessary for Project implementation. Excavation is defined as being 18 or more inches of depth below the existing surface. Water pipeline trenches are expected to be 3 to 5 feet wide and generally require excavations of 5 feet deep. Excavations will primarily occur within the El Dorado County ROW. If excavation is required on private property for PRV Station #2, the District would request an easement. If no easement is granted, then the District will look to acquire land to build the aboveground station on or it would be placed in an underground vault within the ROW. A TRPA pre -grade inspection shall be completed prior to any excavation or saw -cutting activities. 1.2.C.2 Pipeline and Utility Trenching and Excavations The contractor shall be responsible for contacting all utility companies, local agencies and/or utility districts as to the location of all underground facilities. Location and depth of existing utilities where shown on plans are based on best available information. No guarantee is made as to the accuracy of this information or that all utilities are shown. It shall be the contractor's responsibility to locate, protect, and maintain all existing utilities. The contractor or any subcontractor for this contractor shall notify members of underground service alert 48 hours in advance of performing excavation work by calling underground service alert #811. Excavation is defined as being 18 or more inches of depth below the existing surface. The contractor shall pothole all utility and storm drain crossings along the pipeline alignment in advance of installation. The contractor shall report the results of the pothole in writing to the engineer 48 hours (not to include weekends or holidays) prior to undertaking any corrective action. Should any corrective work be done prior to notification, the District assumes no liability for the costs incurred for this work. All interties between new water mains and the existing water system, including new water service connections, and fire hydrant installations and transfers, shall only be made after all pressure testing and disinfection requirements are satisfactorily met. The contractor shall be responsible to provide all blow offs necessary for flushing and sampling of all new water mains as required by the California State Water Resources Control Board and project specifications. SIERRA ECOTONE SOLLRIONS 11 Where new water mains are being installed in paved sections the asphalt replacement shall be the clear trench width for the pipeline size being installed plus twenty-four inches (24") in County of El Dorado right of way, as provided in the contract specifications. The contractor shall replace all traffic striping that is disturbed during construction. The thickness of replacement pavement is 3 inches or to match the existing depth in the El Dorado ROW as specified in the project plans. The contractor shall protect and be responsible for any disturbance or contamination to any dry wells, storm water collection or retainage systems including storm drain pipe, curb & gutter, valley gutters and horizontal drains through -out the project area. Any damage shall be repaired at no additional cost to District. The contractor shall not stock pile any material upon any drainage facilities. All sewer pipes damaged during the execution of the project shall be repaired per plan details. 1.2.C.3 Fill Materials and Placement All excavations shall be backfilled or trench plated at the end of each day's work per the plan specifications. Within paved areas, trenches will be backfilled with a combination of sand, native material, Class II aggregate base and slurry. Excavations within existing paved areas shall be cold patched or covered with steel plates as required per specifications to match the existing pavement at the end of each day's work. All trench plates shall be non- skid type and have cold patch applied to the edge for traffic approach and departure. After the new main is placed into service, the existing water mains, where shown on the project drawings, are to be abandoned in place by cutting out a section of pipe and installing a cap or plug on the end of the pipeline. Existing fire hydrants to be abandoned will be removed and capped below grade. Only new water service connections where shown on the project plans shall be installed per the Districts standard details and project drawings. After Project completion, the locations of all existing water services shall be verified and marked in the field. 1.2.C.4 Disposal of Excess Excavated Material All excess material from the project is to be removed from the site and disposed of at a site approved by the TRPA. For this Project, excess spoil may be temporarily stored at the Contractor staging area at the District Wastewater Treatment Plant. No material shall be stored in any stream environment zone or wet area. The contractor shall not stock pile any material upon any drainage facilities. Contractor shall remove all material generated by any asphalt saw cutting operation during or immediately after saw cutting by using adequately sized vacuuming equipment to accommodate the removal process. 1.2.11) Site Clean Up and Restoration SIERRA ECOTONE SOUITIONS 1L All disturbed areas shall be restored to match pre-existing conditions. Unimproved areas and areas not landscaped shall be revegetated with native species in accordance with the TRPA handbook of best management practices. Existing vegetation removed during construction shall be chipped and mulched on site and stored for use during revegetation. Application of a mulch may enhance vegetative establishment. Any disturbance of private property shall be restored by the contractor at their expense. All traffic striping that is disturbed during construction shall be replaced by the contractor. 1.2.E Site Access, Staging Areas, and Parking The District would likely provide a Contractor staging area at the Wastewater Treatment Facility located off of Al Tahoe Blvd. Additional staging may occur within compacted shoulder areas of Pioneer Trail if allowed by El Dorado County. Contractors equipment and employee vehicles shall park on existing paved surfaces or existing compacted road shoulders. Contractor shall provide crushed rock in areas of temporary construction access to minimize migration of sediment. 1.3 PROJECT DESIGN FEATURES AND BEST MANAGEMENT PRACTICES The design features and best management practices (BMPs) that are detailed in Section 1.3 below are proposed as part of the Project to avoid, reduce and minimize potential direct and indirect effects of water meter installations. 1.3.A Construction Dewatering Plan Within the Project area, Pioneer Trail is elevated above the surrounding terrain and therefore the District does not expect to encounter groundwater during excavations. In the vicinity of the Trout Creek crossing, the waterline would be installed approximately 14 feet above the surface of the creek and so groundwater is also not expected. The most probable location for groundwater interception in the Project area is the low point of Pioneer Trail where there is a 36" culvert crossing. If groundwater is intercepted during some excavations, dewatering may need to be implemented onsite. The contractor shall be responsible for the handling and proper disposal of distribution system water encountered during system tie-ins. The water that would be encountered would come from dewatering of the pipes and not from groundwater. This water would be captured with a Vacuum truck or a sump pump to the sewer system in accordance with the plan specifications. For this Project, the contractor shall assume that up to 1,250 gallons could be encountered at each tie- in. 1.3.113 Construction Equipment Emissions Control Plan To ensure that air quality effects will be minimized, the following best management practices will be implemented to reduce emissions from construction equipment exhaust: SIERRA ECOTONE SOUITIONS 13 • Only equipment of a size and type that will do the least amount of damage, under prevailing site conditions and considering the nature of the work will be used. • Minimize idling time (e.g., 5-minute maximum). • Maintain properly tuned equipment according to equipment manufacturer's guidelines. • Limit the hours of operation of heavy equipment and noise generating activities to 8AM to 6PM. 1.3.0 Fugitive Dust Control Plan The District's contractor will take the necessary steps, procedures, or means as required to prevent its operations in connection with the execution of the Work from causing abnormal dust conditions. The District's contractor will prevent dust from construction activities from being produced in amounts that may be harmful or cause a nuisance to persons living nearby or occupying buildings in the vicinity of the Project. To ensure compliance with El Dorado County Air Quality Management District's (EDCAQMD) Rule 223 to minimize the amount of particulate matter entrained in the ambient air as a result of man-made fugitive dust sources, the following feasible Particulate Matter (PM10) control measures for construction activities will be implemented: • The contractor shall provide a water truck to water areas as necessary for dust control. The contractor shall apply either water or a dust palliative, or both, as required to alleviate or prevent dust nuisance. • During construction, environmental protection devices, such as erosion control, dust control and vegetation protection devices shall be maintained at all times. • The contractor shall provide a vacuum sweeper truck for cleaning of the site during and after construction each day as required to prevent sediment run off and to aid in dust control. 1.3.113 Best Management Practices to Protect Surface and Ground Water/Sediment and Erosion Control Plan The Contractor shall comply with the State Water Resource Control Board waste water discharge requirements for the project and the County of El Dorado encroachment permit. Portions of this Project are likely to qualify as Exempt or Qualified Exempt under TRPA regulations and therefore, would not require a pre -grade inspection. However, new construction requires a TRPA pre -grade inspection be completed prior to any saw cutting or excavation activities. To ensure that potential impacts to surface water and ground water are avoided, reduced and minimized, the following measures and BMPs will be implemented as necessary based on site conditions at individual work sites: • During construction, environmental protection devices, such as erosion control, dust control and vegetation protection devices shall be maintained at all times. SIERRA ECOTONE SOUITIONS 14 • Soil and construction material shall not be tracked off the construction site. Grading operations shall cease in the event that this condition is in danger of being violated. • Loose soil mounds or surface shall be protection from wind or water erosion by being appropriately covered at the end of each work day or when required by TRPA. • The contractor shall not stock pile any material upon any drainage facilities. Excavated material shall be stored upgrade from the excavated area whenever possible. No material shall be stored in any stream environment zone or wet area. • All excess material from the project is to be removed from the site and disposed of at a site approved by the TRPA. No excess material shall be stored on site after hours. Contractor shall remove all material generated by any asphalt saw cutting operation during or immediately after saw cutting by using adequately sized vacuuming equipment to accommodate the removal process. • No equipment or vehicles shall be placed outside the state, city, or county right of way. • No washing of vehicles or heavy equipment shall be permitted except when authorized by TRPA in writing. • Contractor shall provide crushed rock in areas of temporary construction access to minimize migration of sediment. • The contractor shall protect and be responsible for any disturbance or contamination to any dry wells, storm water collection or retainage systems including storm drain pipe, curb & gutter, valley gutters and horizontal drains throughout the project area. Any damage shall be repaired at no additional cost to the District. 1.3.E Prevent and Control Invasive Species To prevent the spread of invasive plant species, the following measures and BMPs will be implemented: • Construction vehicles, including off -road vehicles, will be cleaned when they come into the Basin or come from a known invasive plant infested area. Equipment will be considered clean when visual inspection does not reveal soil, seeds, plant material, or other such debris. • Equipment will be staged in weed -free areas to prevent vehicles from introducing or spreading invasive species. • Earth -moving equipment, gravel, fills, or other materials are required to be weed -free. Onsite sand, gravel, rock, or organic matter will be used when possible or weed -free materials from gravel pits and fill sources that have been surveyed and approved will be used. • Minimize the amount of ground and vegetation disturbance in the construction areas. Upon completion of construction, vegetation will be reestablished in the footprint to minimize weed establishment after the removal. SIERRA ECOTONE SOLLRIONS 15 1.3.F Construction Noise Reduction To reduce construction related noise, the following measures will be implemented: • Noise shall be reduced by mandatory use of mufflers on all construction vehicles and equipment. Where feasible solenoid pavement breakers will be used in lieu of air powered jack hammers. • Construction activities will be limited to the hours of 8:00 AM and 6:00 PM, pursuant to TRPA Code of Ordinances Chapter 68, Noise Limitations. 1.3.G Cultural Resources Protection Although the Project Area has been subject to systematic surface archaeological investigations, it is possible that buried or concealed cultural resources could be present and detected during Project ground disturbance activities. In accordance with the National Historic Preservation Act of 1966, (16 U.S.C. 470), the following procedures will be implemented to ensure historic preservation. In the event previously unknown potential historical, architectural, archeological, or cultural resources (herein after cultural resources) are discovered during subsurface excavations the following procedures will be instituted: • If archaeological features or materials are unearthed during any phase of project activities, all work in the immediate vicinity of the find shall halt until the District has contacted the State and the significance of the resource has been evaluated. Any mitigation measures that may be deemed necessary must have the approval of the State, and shall be implemented, pursuant to the Secretary of the Interior's Standards and Guidelines for Archaeology and Historic Preservation, 48 CFR 44716, by a qualified archaeologist representing the District prior to the resumption of construction activities. Consistent with this, the Engineer will issue a "Stop Work Order" directing the District's contractor to cease all construction operations at the location of such potential cultural resources find. • Such "Stop Work Order" will be effective until such time as a qualified archeologist can be called to assess the value of these potential cultural resources and make recommendations to the State Office of Historic Preservation. • If the archeologist determines that the potential find qualifies for inclusion in the National Register of Historic Places and the California Register of Historic Resources, at the direction of the State Office of Historic Preservation, the Engineer will extend the duration of the "Stop Work Order" in writing, and the District's contractor will suspend work at the location of the find. • In the unlikely event that human remains are encountered, all activities should be stopped immediately and the El Dorado County Coroner's Office should be contacted. This is in compliance with California State Health and Safety Code, Section 7050.5, which states that no further disturbance shall occur until the County Coroner has made the necessary findings as to origin and disposition pursuant to California Public Resources Code, Section 5097.98. 1.3.H Traffic Control Plan SIERRA ECOTONE SOUITIONS 16 Prior to construction activity the contractor shall submit to the District for acceptance a project specific Traffic Control Plan. The Traffic Control Plan will include signage advising road users of construction activities and right of way work in accordance with the current edition of the California Manual on Uniform Traffic Control Devices (CMUTCD), which is the version of the Federal Highway Administration's MUTCD that is amended for use in California. The contractor shall maintain the continuous flow of traffic at all times. Local traffic, in addition to emergency response vehicles, will be allowed to pass though at all times. After working hours, all traffic control devices will be removed and traffic returned to normal. According to the CMUTCD, when construction activities Occur outside of the roadway, Figure 3A, Work Beyond the Shoulder (TA-1), and Figure 3B, Shoulder Work with Minor Encroachment (TA-6), are the most commonly used traffic control configurations that are used to allow for the free flow of traffic and ensure a safe work zone for both construction workers and the traveling public. SIERRA ECOTONE SOLLRIONS 17 FIGURE 3A AND 3B. TRAFFIC CONTROL CONFIGURATIONS — CONSTRUCTION OUTSIDE OF ROADWAY ir+piri MI. VAA Myond M, Shv_ Ltil •,TA ' 1 _;FR iM1 qJ r L-ri Mmma Yeyr•'r r rra cR4 jrUM 4 •: fF�ir P. lrxi w+ori.ir , .11" If+ti79 6-706d4 �1 YM=%=61 m%ftM m* �9 4 T i 7�,�.yyy.� SOURCE: CA MUTCD A majority of the construction for the Project will occur in or in close proximity to the roadway. The Lane Closure on Two -Lane Road Using Flaggers (TA-10) illustrated in Figure 4 from the CA MUTCD is used for temporary lane closures. This traffic control layout allows the faggers to maintain the continuous flow of traffic with minimal delays (less than five minutes) while maximizing both worker and public safety. SIERRA ECOTONE SOLLfTIONS 18 FIGURE 4. TRAFFIC CONTROL CONFIGURATION - CONSTRUCTION IN OR IN CLOSE PROXIMITY OF ROADWAY Flgu��+i�{Cna Gi�oCAcawramrtl,+o-.Lr++alfioe+Yuclnlp�p�ppr�trA-fo1 W+' Oft ■+db k%U rn -Ion I r P b byre I Sae` Ym1es 1 ad hL T, !F-+DI ICf45 b t�ib spn e n d� ,_ __.. _ of kwm cl SQt -+W h �R-i4P3 4�* �I CAkt ] #I 44 � � wiE-]a l��W! a # L Ty!pirtal' AppleC.-sedn 10 SOURCE: CA MUTCD 1.3.1 Hazard and Safety Control Plan The District maintains a Local Hazard Mitigation Plan that satisfies federal legislation (Disaster Mitigation Act of 2000) and the California requirement for local governments to formulate and enact a pre -disaster mitigation program in order "to identify the natural hazards that impact them, to identify actions and activities to reduce any losses from those hazards, and to establish a coordinated process to take advantage of the plan, taking advantage of a wide range of resources." (44 CFR, sec. 201.1) To ensure the protection of persons and property and to safeguard the environment the following actions, measures and BMPs will be implemented: SIERRA ECOTONE SOLLRIONS 19 • Excavation on project sites from which the public is excluded will be marked or guarded in a manner appropriate to the degree of hazard. • The District's contractor will provide suitable and adequate sanitary conveniences for the use of all persons at the site of the Work. Such conveniences will include chemical toilets or water closets and will be located at appropriate locations at the site of the Work. All sanitary conveniences will conform to the regulations of the governmental entities having jurisdiction over such matters. At the completion of the Work, all such sanitary conveniences will be removed and the site left in a sanitary condition. • First -Aid facilities and information posters conforming, at a minimum, to the requirements of the Occupational Safety and Health Administration (OSHA) will be provided in a readily accessible location or locations. • Construction hoists, elevators, scaffolds, stages, shoring and similar temporary facilities will be of ample size and capacity to adequately support and move the loads to which they will be subjected. Railings, enclosures, safety devices, and controls required by law or for adequate protection of life and property will be provided. • Temporary supports will be designed with sufficient safety considerations to assure adequate load bearing capability. The District's contractor will submit design calculations by a professional registered engineer for sheeting, shoring and bracing prior to application of loads. • The District's contractor will adequately identify and guard all hazardous areas and conditions by visual warning devices and, where necessary, physical barriers. Such devices will, at a minimum, conform to the requirements of Cal/OSHA. • A sufficient number of fire extinguishers of the type and capacity required to protect the work and ancillary facilities will be provided in readily accessible locations. • The District's contractor will provide labor and equipment to protect the surrounding property from fire damage resulting from construction operations. 1.3.J Migratory Bird Nest Site Protection Program For construction activities proposed to occur during the nesting season (March 15 through August 15), and outside of paved areas, the contractor and District shall review the Project Area to identify any migratory bird nest sites that may be present. If a nest is present in the immediate vicinity, a qualified biological monitor shall be contacted to evaluate whether any migratory birds are impacted by the project. The biological monitor shall have the authority to stop construction near occupied sites if it appears to be having a negative impact on nesting migratory birds or their young. If construction must be stopped, the monitor must consult with USFWS and CDFW staff within 24 hours to determine appropriate actions to restart construction while reducing impacts to identified migratory bird nests. 1.4 PROJECT PERMITTING AND APPROVALS For work performed within the Right -of -Way, the District is allowed access for maintenance and construction based on an annual project specific Encroachment Permit with El Dorado County. Each property owner/customer will be notified prior to work that may interrupt water service for SIERRA ECOTONE SOUITIONS ZU their respective property. Minor periods of water shut-off will occur during the installation process, which is anticipated to last less than four hours each day on a limited number of occasions during major project activities. Tahoe Regional Planning Agency The Tahoe Regional Planning Agency (TRPA) enters into agreements with local agencies to streamline the permitting process. These agreements allow local agencies to perform environmental review on projects for conformance with TRPA standards. The agreements are in the form of Memorandum of Understanding (MOU) that are signed by each partner. The District currently has a Memorandum of Understanding with the Tahoe Regional Planning Agency dated 23 March 2012. The District's MOU with TRPA is an MOU for Public Works Providers that allows for repair and maintenance of underground facilities without TRPA's review. This allows for increased efficiency and provides for increased protection of local and natural resources as agreed to in the MOU. The Memorandum of Understanding between Tahoe Regional Planning Agency and South Tahoe Public Utility District can be located here: https://www.tri)a.gov/wp-content/uploads/documents/archive/FINAL Public Works MOU.pdf Attachment A, identifying STPUD on page 5 of 9 can be found here: https://www.tri)a.gov/wp-content/uploads/documents/archive/FINAL-Public-Works-MOU- Attachment-A.pdf The listing of Exempt and Qualified Exempt Activities can be found here: https://www.tri)a.gov/wp- content/uploads/documents/archive/FINAL Public Works MOU Attachment B. While some components of the proposed Project include repair and maintenance activities that would be covered under the MOU, the installation of new facilities are subject to TRPA review. All construction projects, except for work that is exempt or qualified exempt, require a pre -grade inspection. The inspection is an on -site meeting between the TRPA Compliance Inspector and contractor to review the installation of construction BMPs, go over permit conditions, and discuss general construction practices. Information on public service projects can be found here: https://www.trpa.gov/applications-forms/#public The standard information and application packet for public service projects can be found here: https://www.trpa.gov/wp-content/uploads/documents/archive/2/Public Service Application.0 The TRPA findings document for public services can be found here: https://www.trpa.gov/wp-content/uploads/documents/archive/PUBLIC-SERVICE-FINDINGS- DOCUMENT.pdf SIERRA ECOTONE SOLLRIONS 21 Encroachment Permits The District must apply for a Right -of -Way Encroachment, Excavation and Grading Permit from El Dorado County. The Public Works Department will issue the permit after review and will require a BMP Plan and Traffic Control Plan to be implemented at all times during construction. Water Quality Control Board The Municipal Storm Water Program regulates storm water discharges from municipal separate storm sewer systems (MS4s) throughout California. The Phase II Permit Program serves municipalities with less than 100,000 customers. The State Water Resources Control Board (State Water Board) and Regional Water Quality Control Boards (Lahontan for this region) implement and enforce the Municipal Storm Water Program. The State Water Resources Control Board issued a General Permit for the Discharge of Storm Water from Small MS4s (Order 2003- 0005-DWQ) to provide permit coverage for smaller municipalities, The Phase II Small MS4 General Permit covers Phase II permittees statewide. On February 5, 2013 the Phase II Small MS4 General Permit was re -adopted (Order 2013-0001-DWQ) and the new requirements became effective on July 1, 2013. SIERRA ECOTONE SOLLRIONS ZL The evaluation of environmental impacts is based upon the completion of the checklist portion of the Environmental Checklist Form, and consists of the analysis of each impact issue area required under CEQA. The analysis of each checklist item identifies any significance criteria or thresholds used to evaluate each impact question, and any mitigation measure(s) identified to reduce the impact to a less -than -significant level. This checklist identifies physical, biological, social and economic factors that might be affected by the Project. In some cases, background studies performed in connection with the Project indicate no impacts. A "No Impact" answer in the last column reflects this determination. Where there is a need for clarifying discussion, the discussion is included either following the applicable section of the checklist or is within the body of the environmental document itself. The words "significant" and "significance" used throughout the following checklist are related to CEQA, not NEPA, impacts. The questions in this form are intended to encourage the thoughtful assessment of impacts. 2.1 AESTHETICS & SCENIC RESOURCES/COMMUNITY DESIGN, LIGHT AND GLARE 2.1.A Environmental and Regulatory Settings TRPA maintains a rating system for scenic resources along travel routes. For each roadway unit, the travel route rating considers views of man-made features, roadway distractions, road structure, lake views, landscape views, and variety. The scenic quality ratings include an inventory of visual subcomponents and specific scenic resources within each roadway unit. This rating system provides an assessment of the natural landscape based on four qualities: intactness, unity, vividness, and variety. The primary goal of both the travel route and scenic quality rating systems is to maintain or upgrade the scenic quality of the view from the road. TRPA Scenic Quality Threshold standards require roadway travel routes to attain a minimum travel route rating of 15.5 out of a possible 30 and to maintain the original scenic quality rating assigned in 1982. The Project Area includes the central travel route of Pioneer Trail and side streets in developed residential neighborhoods. Pioneer Trail was identified as a Scenic Corridor in the 1982 TRPA Lake Tahoe Basin Scenic Resource Inventory. The Project is located in unincorporated El Dorado County along the Pioneer Trail South Unit (the Pioneer Trail North Unit is located within the urban core in the City of South Lake Tahoe). Pioneer Trail South was assigned a Threshold composite rating of 20 out of a possible 30 in 1982 and a rating of 21 has been maintained in subsequent Threshold Evaluations. 2.1.113 Checklist SIERRA ECOTONE SOLLRIONS 23 Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Have a substantial adverse effect on a scenic vista? ❑ ❑ ❑ B) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic ❑ ❑ ❑ building within a state scenic highway? C) Substantially degrade the existing visual character or ❑ ❑ ❑ quality of the site and its surroundings? D) Create a new source of substantial light or glare which ❑ ❑ ❑ would adversely affect day or nighttime views in the area? 2.1.0 Discussion A) No Impact Scenic vistas are defined by CEQA as a viewpoint that provides expansive views of a highly valued landscape for the benefit of the general public defined by local plans or policies. Adverse effects to scenic vistas present within the Project Area would constitute a significant impact. Views from within the Project Area consist of residential neighborhoods and public forest lands, but no scenic vistas. Therefore, the Project would have no impact on scenic vistas. The B) No Impact The Project will not substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway. Pioneer Trail is identified as a TRPA Scenic Corridor. The proposed Pioneer Trail waterline would be installed within the roadway below ground surface and have no impact on scenic resources. Proposed new PRV Station #1 would be located at the intersection of Pioneer Trail and Jicarilla and would be visible in the Scenic Corridor. The proposed structure for the station is a pre -fabricated aluminum box in dark green that would be attached to a 10 x 12-foot concrete pad that is only 6-inches thick. The box is designed to blend in a forested landscape with its small size, low and slim profile, and dark green color that would have little or no effect on scenic resources. Proposed PRV Station # 2 would be located on Marshall Trail, a much lower traffic side street, and the above ground structure would not be visible from Pioneer Trail. A total of 10 new fire hydrants would be visible along Pioneer Trail but would not change existing scenic conditions. Therefore, the Project would have no impact on scenic resources associated with scenic highways. SIERRA ECOTONE SOUITIONS 14 C) No Impact Substantial degradation of the existing visual character or quality of the Project Area would constitute a significant impact. Project construction would have temporary impacts along the Scenic Corridor of Pioneer Trail, but the new water lines would be installed underground. The small above -ground structures associated with the PRV stations would not significantly degrade the existing visual character or quality of the site and its surroundings. D) No Impact Interference with nighttime skies from ground -level light and glare or interference with vision due to reflective glare would constitute a significant impact. The Project involves no nighttime work or lighting and would not result in a substantial source of nighttime light or glare. 2.2 AGRICULTURAL RESOURCES & FARM LANDS 2.2.A Environmental and Regulatory Settings The State of California identifies Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), on the Important Farmlands Map prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency. Prime Farmland is defined as land with the best combination of physical and chemical features for the production of agricultural crops as based on: • United States Department of Agriculture (USDA) Natural Resources Conservation Service Land Use Capability classifications (i.e., Class I and II); • A rating of 80-100 on the Storie Index; • Support of livestock used for the production of food and fiber and that has an annual carrying capacity of at least one animal unit per acre; • Presence of fruit or nut bearing trees, vines, bushes, or crops that have a non -bearing period of less than five years and an annual commercial return not less than $200 per acre; or • A return from the production of unprocessed agricultural plant products at an annual gross value of not less than $200 per acre for three of the previous 5 years. Unique Farmland is land of lesser quality soils used for the production of the state's leading agricultural cash crops. Farmland of Statewide Importance is land with a good combination of physical and chemical features for the production of agricultural crops. The California Land Conservation Act of 1965, commonly referred to as the Williamson Act, enables local governments to enter into contracts with private landowners for the purpose of restricting specific parcels of land to agricultural or related open space use. In return, landowners receive property tax assessments, which are much lower than normal because they are based upon farming and open space uses as opposed to full market SIERRA ECOTONE SOLLRIONS 25 value. The Open Space Subvention Act of 1971 provided local governments an annual subvention of forgone property tax revenues from the state through the year 2009; however, these payments have been suspended in more recent years due to revenue shortfalls. Forest Land, as defined by Public Resources Code section 12220(g), is land that can support 10-percent native tree cover of any species, including hardwoods, under natural conditions, and that allows for management of one or more forest resources, including timber, aesthetics, fish and wildlife, biodiversity, water quality, recreation, and other public benefits. Timberland, as defined by Public Resources Code section 4526, means land, other than land owned by the federal government and land designated by the board as experimental forest land, which is available for, and capable of, growing a crop of trees of a commercial species used to produce lumber and other forest products, including Christmas trees. Government Code section 51104(g)), which can be cited as the California Timberland Productivity Act of 1982, defines Timberland as privately owned land, or land acquired for state forest purposes, which is devoted to and used for growing and harvesting timber, or for growing and harvesting timber and compatible uses, and which is capable of growing an average annual volume of wood fiber of at least 15 cubic feet per acre. Timberland zoned for Timberland Production, or Timberland production zone or "TPZ" means an area which has been zoned pursuant to Section 51112 or 51113 and is devoted to and used for growing and harvesting timber, or for growing and harvesting timber and compatible uses, as defined in subdivision (h). With respect to the general plans of cities and counties "timberland preserve zone" means "timberland production zone." The TRPA Initial Environmental Checklist does not directly address agricultural resources and farmland, but does address potential effects to wildlife habitat, trees, and vegetation, which are addressed in Section 2.6, Biological Resources. 2.2.113 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Department of Conservation as an optional model to use in assessing impacts on agriculture and farmland. Would the project: SIERRA ECOTONE SOLLRIONS 16 Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact A) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland ❑ ❑ ❑ Mapping and Monitoring Program of the California Resources Agency, to non-agricultural use? B) Conflict with existing zoning for agricultural use, or a ❑ ❑ ❑ Williamson Act contract? C) Conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code section 12220(g)), timberland (as defined by Public ❑ ❑ ❑ Resources Code section 4526), or timberland zoned Timberland Production (as defined by Government Code section 51104(g))? D) Result in the loss of forest land or conversion of forest ❑ ❑ ❑ land to non -forest use? E) Involve other changes in the existing environment which, due to their location or nature, could result in ❑ ❑ ❑ conversion of Farmland, to non-agricultural use or conversion of forest land to non -forest use? 2.2.0 Discussion A) No Impact A significant impact on agricultural resources may result from a project that involves the conversion of Prime Farmland, Unique Farmland or Farmland of Statewide importance, as defined by the State of California on the Important Farmlands Map, to a non-agricultural use. The Project Area does not contain Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency. Because no lands designated Prime Farmland, Unique Farmland or Farmland of Statewide Importance exist within the Project Area, the Project would result in no impact to these resources. B) No Impact SIERRA ECOTONE SOUITIONS 27 The Project Area is not zoned for agricultural use, and does not contain Williamson Act contracts. Because no such zoning exists within the Project Area, the Project would result in no impact to these resources. C) No Impact The Project will not conflict with existing zoning, or result in re -zoning of forest land (as defined in Public Resources Code section 12220(g)), timberland (as defined by Public Resources Code section 4526), or timberland zoned Timberland Production (as defined by Government Code section 51104(g)). The Project components would be installed within the ROW of Pioneer Trail and side streets and is consist with existing zoning. D) No Impact The Project will not result in the loss of forest land or conversion of forest land to non - forest use. The Project components would be installed within the ROW of Pioneer Trail and side streets and would have no impact to this resource. E) No Impact Because designated Farmland does not exist within the Project Area, the Project would create no impact to this resource. 2.3 AIR QUALITY 2.3.A Environmental and Regulatory Settings Air quality within the Lake Tahoe Basin is regulated by several jurisdictions including the United States Environmental Protection Agency (USEPA), California Air Resources Board (CARB), the TRPA, and the El Dorado County Air Quality Management District (EDCAQMD). These jurisdictions develop rules, regulations, policies, and/or plans to achieve the goals and directives imposed through legislation. The Project Area is located within the Lake Tahoe Air Basin (LTAB) and EDCAQMD's jurisdictional area. The LTAB includes portions of El Dorado County and Placer County in California and Washoe County, Douglas County, and Carson City Rural District in Nevada. The LTAB is affected by both the rate and location of pollutant emissions and by meteorological conditions that influence movement and dispersal of pollutants. Atmospheric conditions such as wind speed, wind direction, air temperature gradients, and existing air pollutant sources coupled with local topography affect the dispersion of air pollution and air quality. Airborne pollutants in the Tahoe Basin generally originate from three areas: • Populated areas of the Basin that generate airborne anthropogenic materials such as road dust, vehicle exhaust, and chimney smoke; SIERRA ECOTONE SOLLRIONS Z8 • Undeveloped areas in the Basin that produce airborne dust and smoke, some of which is natural and some which results from the direct and indirect effects of land management practices; and • Airborne materials generated in upwind areas, including the San Francisco Bay area and the Central Valley, that are carried into the Basin by the region's prevailing winds. As a result of the various potential emission sources, air quality regulations focus on the following air pollutants: ozone (03); carbon monoxide (CO); nitrogen dioxide (NO2); sulfur dioxide (S02); fine particulate matter (PM 10 and PM2.5); and lead. These pollutants are commonly referred to as "criteria air pollutants". Construction phase emissions were calculated using the Road Construction Emissions Model Version 8.10 (Model) released in June 2016 by the Sacramento Air Quality Management District (SAQMD). Due to the small size of the project, the Road Construction Emissions Model was best suited for the proposed Project instead of either CaIEEMod or the Offroad Simulation Model. The SAQMD Model uses Sacramento Valley Air Basin Fleet Average Emission Factors, representative of the equipment used on STPUD projects, as projects are frequently bid and constructed by Sacramento -area construction contractors. The model calculates both the daily maximum and total for criteria pollutants as well as annual greenhouse gas (GHG) emissions. Specifically, the model conducts short-term construction emissions associated with the grubbing, grading, draining/utilities/sub-grade, and paving and operational emissions for built -out land use development from a suite of sources, including but not limited to off -road construction equipment, on -road mobile equipment, fugitive dust associated with paved and unpaved roads, staging and storage areas, and emergency generators. The model was run for the STPUD District Wide Water and Sewer Facilities Upgrade Project Initial Study that was finalized in September 2021 (Sierra Ecotone Solutions 2021). This analysis included replacement of water and sewer lines that the District would be able to implement in one construction season. These model results are directly applicable to this project as equipment and construction measures are equivalent. A copy of the RCE Model results can be reviewed in Chapter 6 Appendix D. The calculation of GHG emissions was for each year of water and sewer pipe replacement by the District was found to be equivalent to 168.27 metric tons of carbon (MT CO2e) emissions annually. For comparison, July 2019, the City of South Lake Tahoe released an estimate for community -wide GHG emissions by sources and activities from 2015 that estimated total emissions as 248,225 MT CO2e. Off -road transportation, which includes construction equipment emissions, accounted for 4% of community emissions, totaling the equivalent of 10,925 metric tons of carbon (MT CO2e) emissions annually. Table 2.3-1 below outlines the pollutants generated from the RCE Model for the proposed project (See Chapter 6, Appendix D for full report). SIERRA ECOTONE SOLLRIONS 29 Table 2.3-1 Project Emissions Construction Annual (tons/year) max Daily (lbs./day) max Carbon monoxide 0.62 11.48 Nitrogen oxides 0.65 12.31 Reactive Organic Gasses 0.07 1.35 Volatile Organic Compounds See discussion in Section 2.8.0 See discussion in Section 2.8.0 Lead N/A* N/A* PM less than 2.5 microns 0.03 0.59 PM less than 10 microns 0.04 0.80 Sulfur Dioxide 0,00 0.04 Ozone See discussion in Section 2.3.0 See discussion in Section 2.3.0 SOURCE: CHAPTER 6, APPENDIX D, RCE MODEL 8.10 MODEL REPORTS 2.3.13 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Where available, the significance criteria established by the applicable air quality management or air pollution control district may be relied upon to make the following determinations. Would the project: A) Conflict with or obstruct implementation of the ❑ ❑ ❑ applicable air quality plan? B) Violate any air quality standard or contribute substantially to an existing or projected air quality ❑ ❑ ® ❑ violation? SIERRA ECOTONE SOUITIONS 3u Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact C) Result in a cumulatively considerable net increase of any criteria pollutant for which the Project region is non - attainment under an applicable federal or state ambient ❑ ❑ ® ❑ air quality standard (including releasing emissions, which exceed quantitative thresholds for ozone precursors)? D) Expose sensitive receptors to substantial pollutant ❑ ❑ ® ❑ concentrations? E) Create objectionable odors affecting a substantial ❑ ❑ ® ❑ number of people? 2.3.0 Discussion A) No Impact The Project will implement improvements across the STPUD water supply distribution system to reduce the risk of pipe and valve rupture for improved water conservation and a corresponding reduction in emissions that may result from water supply production and distribution. The Project would support existing and proposed air quality and greenhouse gas (GHG) reduction efforts and would not conflict with or obstruct implementation of the Lake Tahoe Air Quality Management Plan. B) Less than Significant Impact Within Section 5.1, "Significance Criteria for Project Operation Emissions" of the El Dorado County Air Protection Control District (APCD) — CEQA Guide, the EDCAQMD has established quantitative operation emission thresholds of 82 pounds per day for both Reactive Organic Gases (ROG) and Oxides of Nitrogen (NOx) for determining if a project has a significant impact. For the Lake Tahoe Air Basin portion of the EDCAQMD, the TRPA has designated an air quality "significance threshold" of 0.08 ppm over one hour for ozone, which is slightly more stringent than the state AAQS for ozone of 0.09 ppm for one hour. Construction phase emissions were calculated using the Road Construction Emissions (RCE) Model Version 8.10 (Model) released in June 2016 by the Sacramento Air Quality Management District (SAQMD). Chapter 6, Appendix D contains the model assumptions, output, and reporting produced for the Project and for comparison, the construction and operation of a single family home. The model calculates both the daily maximum and project totals for criteria pollutants. SIERRA ECOTONE SOLLRIONS 31 The following inputs were used when setting up the Model to calculate annual emissions: • Emissions from the construction work occurring five (5) months per year (May through October), working 22 days per month. • Sand Gravel was identified as the primary soil type being encountered. • Water and sewer projects will occur at the same time at a rate of 200 linear feet per day, totaling 400 linear feet per day. Based on an assumed trench width of three feet, the daily disturbed area is 1,200 square feet (0.009 acres) for estimating PM10 emissions. • For the project length, over the course of the assumed season (five months, 22 days per month) of 110 days, a total of 23,100 linear feet or 4.375 miles per year of pipe is anticipated to be replaced. This is based on the District's current ten-year sewer and waterline replacement plans that identity 140,000 linear feet of waterline and 91,000 linear feet of sewer line to be replaced, totaling 231,000 linear feet over ten years. • Based on an assumed trench width of three feet, the overall project disturbance area is 69,300 square feet (1.59 acres) per season. Due to stabilization requirements in the Tahoe basin, it is anticipated that only one week's worth of work would be disturbed at a time, totaling 3,000 square feet or 0.07 acres. • Water trucks will be used, per the Fugitive Dust Control Plan, consistent with the Particulate Matter (PM10) control measures required for compliance with El Dorado County Air Quality Management District's (EDCAQMD) Rule 223. A heavy duty diesel truck, T7 Single Unit Construction Truck was assumed for the water truck emissions. • For calculating soil hauling, the default haul truck capacity of 20 cubic yards was assumed, with an estimated average trench depth of five feet for waterline projects and six feet for sewer projects. In calculating the import and export required per project, it was also assumed that half of the native material would be re -used onsite, resulting in annual import-export totals of 6,922 cubic yards or 63 cubic yards per working day. • To maintain conservative assumptions, no On -Road Fleet or Off -Road Equipment emission mitigation measures were assumed; the emissions levels are based on the fleet averages as calculated by SMAQMD. • The five (five) month annual project duration was assumed to start in May. The model was not used for Grading/Excavation as these are either minimal or non-existent phases for the replacement of water and sewer lines in developed areas. Three days of Grubbing/Land Clearing was accounted for, but is rare for District pipe projects that typically occur within public streets. • The asphalt paving section was calculated assuming a total of 12 paving days per project. The trucking volume was calculated based on pave -back requirements that the District is subject due to local city and county encroachment requirements that require a full (12-foot-wide) lane of paving following trenching in the right-of-way. The equipment listed is based on observed paving operations during 2020 on the District's sewer and water projects. Paving back a lane width of 12 feet that is four (4) inches ®SIERRA ECOTONE SOLLfTIONS thick results in an overall volume of 3,422 cubic yards of asphalt, split over 12 days, results in a daily import-export volume of 285 cubic yards. • Soil hauling emissions were calculated using a Round Trip distance of 10 (ten) miles, reflecting the distance from STPUD's designated contractor staging area to the local soil disposal and aggregate supply site most frequently used by contractors. This trip was estimated to occur once per day, consistent with a balanced off -haul and backfill volume requirements. The same distance was assumed for • Worker commute emissions were estimated using a one-way trip length of five (5) miles occurring twice (2) per day for 10 employees on each project, totaling a daily vehicle miles traveled (VMT) of 200. A light duty truck was assumed for worker commute emissions. • One (1) water truck was assumed for each project, and that it would remain onsite, adjacent to the work, traveling two (2) miles per day. TABLE 2.3-2 Construction Equipment, Horsepower, Hours per Day of Operation Equipment Type Count Average HP Hours/day/Per Piece Air Compressors 2 25 1 Concrete/Industrial Saws 2 3 1 Excavators 4 204 6 Off -Highway Tractors 2 89 4 Pavers 1 188 6 Plate Compactors 2 7 4 Rollers 3 130 8 Rubber Tired Loaders 2 235 3 Skid Steer Loaders 2 80 4 Sweepers/Scrubbers 2 24 1 Tractors/Loaders/Backhoes 2 98 5 The active construction phase of the Project would result in maximum daily ROG emissions of 1.35 pounds per day (summer) and NOx emissions of 12.31 pounds per day (summer), which are well below the threshold established for determining a significant impact. Annual final construction emissions are calculated at 0.07 tons per year ROG and 0.65 tons per year NOx. SIERRA ECOTONE SOLLRIONS 33 The Project would not result in any long-term emissions from stationary sources, as no new sources will be built as part of the proposed Project. The Project would have a less than significant contribution towards construction emissions and would not contribute substantially to an existing or projected air quality violation. C) Less than Significant Impact The primary ozone precursors identified within the modeled construction emissions (ROG and NOx) are below the significance threshold and do not result in a cumulatively considerable net increase of any nonattainment pollutant. De minimus levels of Sulphur Oxides (0.04 pounds per day), and inhalable particulates (PM10 — 0.80 pounds per day in comparison to 122 tons per day produced throughout El Dorado County) will occur only during construction. Of the noted pollutants, PM10 is the only pollutant designated in nonattainment in the Lake Tahoe Air Basin. The Project construction phase would not represent a cumulatively considerable net increase for the region and ongoing project operations would not result in a cumulatively considerable net increase of any criteria pollutant for which the Lake Tahoe Air Basin is in non -attainment under applicable federal or state ambient air quality standards. D) Less than Significant Impact A sensitive receptor is generally defined as a person in the population who is particularly susceptible to health effects due to exposure to an air contaminant than is the population at large. Sensitive receptors (and the facilities that house them) in proximity to localized CO sources, toxic air contaminants or odors are of particular concern. Project construction would not emit pollutant concentrations at substantial levels, would be temporary in nature, and would not be concentrated in close proximity to sensitive receptors, such as medical facilities or schools. Project operations would be performed underground primarily and within a closed water supply system and would not create a waste stream, which minimizes the creation of air borne pollutants and protects sensitive receptors to result in less than significant impacts. E) Less than Significant Impact A project that generates odorous emissions of a type or quantity that could meet the statutory definition for nuisance (i.e., odors "which cause detriment, nuisance, or annoyance to any considerable number of persons or to the public, or which may endanger the comfort, repose, health, or safety of any such person or the public, or which may cause, or have a natural tendency to cause, injury or damage to business or property") would result in a significant impact, as based on the distance and frequency at of odor complaints from the public, specifically sensitive receptors. Construction equipment and machinery will generate diesel odors during construction. The generation of odors during the construction period would be temporary, would occur within SIERRA ECOTONE SOLLRIONS 34 specific periods of time, and would tend to be dispersed within a short distance from the active work area. Therefore, the Project would result in less than significant impacts to residents and construction workers. No objectionable odors would be generated from the Project following construction. Project operations would not create objectionable odors affecting a substantial number of people because project operations will occur in a closed, underground water supply system that contains and/or neutralizes objectionable odors. 2.4 BIOLOGICAL RESOURCES (STREAM ENVIRONMENT ZONES, WETLANDS, WILDLIFE AND VEGETATION) 2.4.A Environmental and Regulatory Settings The Tahoe Basin contains a broad diversity of montane vegetation associations. The current distribution of conifer forest associations and other vegetation associations within the Basin is determined largely by the local physical environment. Vegetation associations range from grassland and montane riparian associations to Jeffrey pine and alpine dwarf shrub. The Basin also contains a number of special -status and rare plant species, including threatened and endangered species. These species are protected through TRPA, Endangered Species Act of 1973 (ESA), California Endangered Species Act (CESA), California Department of Fish and Wildlife (CDFW), and/or the California Native Plant Society (CNPS). Land use or activity restrictions occur in areas inhabited by these species. The Tahoe Basin provides habitat for over 250 species of resident and migratory vertebrate wildlife species including mammals (64), birds (168), and reptiles and amphibians (23). The quality and size of these species' habitats generally determine the abundance of any one species or animal population. The Basin also contains a number of special -status wildlife, including threatened and endangered species. These species are protected through TRPA, ESA, CESA, and/or CDFW. The proposed waterlines and facilities are located within the El Dorado County Right -of - Way along Pioneer Trail or immediately adjacent The proposed Project locations contain existing disturbance in the form of road shoulder, road base, and pavement. The Project Area includes residential neighborhoods and National Forest land Database Searches - The California Natural Diversity Data Base (CNDDB; accessed December 10, 2021) and the California Native Plant Society (CNPS) Inventory of Rare and Endangered Plants (accessed December 10, 2021) were searched and reviewed in order to identify sensitive species and habitats that may be within the Project Area. In addition, a species list was generated for the Project Area by the US Fish and Wildlife Service Information for Planning and Consultation (USFWS IPaC https://ecos.fws._gov/ipac/ accessed December 12, 2021). Species Occurrences - A one -mile buffer surrounding the Project Area was searched for recorded occurrences in the BIOS database (CNDDB 2021). A CNDDB occurrence report SIERRA ECOTONE SOUITIONS 35 was generated for the following 7.5 Minute Quadrangles: Caples Lake, Carson Pass, Echo Lake, Emerald Bay, Freel Peak, Homewood, Meeks Bay, Pyramid Peak, Rockbound Valley, and South Lake Tahoe Quad. The species lists generated in these database searches are included in Chapter 6 (Appendices) of this document. The USFWS letter and associated list is also included in Chapter 6. The USFWS identified 4 species as having the potential to exist within the Project Area: Sierra Nevada yellow -legged frog (SNYLF; Rana sierrae), Lahontan cutthroat trout (Oncorhynchus clarkii henshawi), monarch butterfly (Danaus plexippus) and whitebark pine (Pinus albicaulis). The CNDDB list identified 5 additional special status wildlife species (western bumble bee, Bombus occidentalis; bald eagle Haliaeetus leucocephalus; bank swallow Riparia riparia; North American wolverine (Gulo gulo luscus); and willow flycatcher Empidonax traillii) and one California endangered plant (Tahoe yellowcress, Rorippa subumbellata) (CDFW 2020). Figure 5 shows the known occurrences of the sensitive species identified within the 1-mile buffer of the Project Area grouped by taxonomic categories. Figure 6 shows the known occurrences and habitat of SNYLF. Figure 7 identifies stream environment zones (SEZ) located near the Project Area. The map is a TRPA GIS layer based on mapping by Bailey (1974). Table 2.4-1 identifies the 8 wildlife species with the potential to occur in the Project Area based on the database searches described above. Table 2.4-2 identifies the 21 plant species with the potential to occur in the Project Area (HP = Habitat Present, SP = Species Present). TABLE 2.4-1 WILDLIFE SPECIES OF CONCERN Species Status Habitat HP SP Comments Fish: Oncorhynchus Federally Historically occurred in No No Project activities are clarkii Threatened all accessible cold limited to the Right-of- henshawi TRPA waters of the Lahontan Way of paved roads in Lahontan Special Basin in a wide variety the residential cutthroat trout Interest of water temps and neighborhoods. There Species conditions. Cannot is no suitable fish tolerate presence of habitat . other salmonids. Gravel riffles in streams required for breeding. Wildlife: SIERRA ECOTONE SOLLRIONS 36 TABLE 2.4-1 WILDLIFE SPECIES OF CONCERN Species Status Habitat HP SIR Comments Haliaeetus Federally Bald eagle are known to No No Project activities are leucocephalus Delisted forage and nest limited to the Right -of - bald eagle California adjacent to large bodies Way of paved roads in Endangered of water in mid to late the residential successional types of neighborhoods. There forest with standing is no suitable roosting dead trees or snags habitat. Empidonax California In the central and No No Project activities are traillii Endangered southern Sierra Nevada, limited to the Right -of - willow this species typically Way of paved roads in flycatcher breeds in willow- the residential dominated riparian neighborhoods. There vegetation among is no suitable riparian perennial streams in habitat. moist meadows or spring -fed or boggy areas. Riparia riparia California Species requires No No The Project area does bank swallow Threatened vertical banks/cliffs with not contain suitable fine-textured/sandy soils habitat for the species near streams, rivers, due to the lack of lakes, to dig nesting vertical banks and/or hole. cliffs to dig nesting hole. Gulo gulo Federally Habitats used in the No No There are no records luscus Proposed southern Sierra Nevada of detections in the North Threatened include red fir, mixed Lake Tahoe Basin and American conifer, lodgepole, this species is thought wolverine subalpine conifer, alpine to be extirpated from dwarf -shrub, barren, the vicinity. High and probably wet levels of existing meadows, montane human presence and chaparral, and Jeffrey activity are not pine. (CDFG 1980) suitable for wolverine. Danaus Federal During the breeding No No There is no potential plexippus Candidate season, monarchs lay habitat for monarch their eggs on their within the project monarch obligate milkweed area as work will be butterfly host plant (primarily performed in the Ascle ias s , and road right of-wa SIERRA ECOTONE SOLLRIONS 37 TABLE 2.4-1 WILDLIFE SPECIES OF CONCERN Species Status Habitat HP SP Comments larvae emerge after and will not impact two to five days. any milkweed or Larvae develop flowering plants. through five larval instars (intervals between molts) over a period of 9 to 18 days, feeding on milkweed and sequestering toxic chemicals (cardenolides) as a defense against predators. The larva then pupates into a chrysalis before emerging 6 to 14 days later as an adult butterfly. Bombus California Flowering plants. Once No No There are no flowering occidentalis Candidate common & widespread, plants in the Project western Endangered species has declined area or adjacent that bumble bee precipitously from could be impacted. central CA to southern B.C., perhaps from disease. Rana sierrae Federally The SNYLF is strongly Yes No Project activities are Sierra Nevada Endangered associated with limited to the Right -of - yellow -legged California montane riparian Way of paved roads in frog (SNYLF) Threatened habitats in lodgepole the residential pine, yellow pine sugar neighborhoods. A pine, white fir whitebark portion of the Project pine and wet meadow Area buffer overlaps vegetation types (Zeiner with suitable habitat of et al. 1988). Typically, the Upper Truckee SNYLFs prefer well River and Trout illuminated, sloping Creek, however these banks of meadow riparian zones would streams, riverbanks, not be impacted. isolated pools, and lake borders with vegetation SIERRA ECOTONE SOLLRIONS 38 TABLE 2.4-1 WILDLIFE SPECIES OF CONCERN Species Status Habitat HP SP Comments that is continuous to the water's edge. SOURCE: SIERRA ECOTONE SOLUTIONS 2022 (6.1 ECOTONE SOLLRIONS 39 Table 2.4-2 Plant Species of Concern Scientific Name Common CA CESA FESA Blooming Habitat Micro Suitable Name Rare Period Habitat Habitat in Plant Project Area? Rank Boechera Tulare 1 B.3 None None (May)Jun- Subalpine coniferous Rocky slopes No rocky tularensis rockcress Jul(Aug) forest, Upper montane slopes in coniferous forest project area. Botrychium upswept 2B.3 None None (Jun)Jul- Lower montane mesic No meadows ascendens moonwort Aug coniferous forest, and seeps in Meadows and seeps project area. Botrychium scalloped 2B.2 None None Jun -Sep Bogs and fens, Lower No meadows, crenulatum moonwort montane coniferous seeps, bogs or forest, Meadows and fens in project seeps, Marshes and area. swamps (freshwater), Upper montane coniferous forest Botrychium Mingan 2B.2 None None Jul -Sep Bogs and fens, Lower Mesic No meadows, minganense moonwort montane coniferous seeps, bogs or forest, Meadows and fens in project seeps (edges), Upper area. montane coniferous forest Brasenia watershield 2B.3 None None Jun -Sep Marshes and swamps No marshes schreberi (freshwater) and swamps in project area. SIERRA ECOTONE SOLLRIONS 4U Table 2.4-2 Plant Species of Concern Scientific Name Common CA CESA FESA Blooming Habitat Micro Suitable Name Rare Period Habitat Habitat in Plant Project Area? Rank Carex davyi Davy's 1 B.3 None None May -Aug Subalpine coniferous No forest in sedge forest, Upper montane project area. coniferous forest Project area only contains disturbed paved areas. Carex limosa mud sedge 2B.2 None None Jun -Aug Bogs and fens, Lower No meadows, montane coniferous seeps, bogs or forest, Meadows and fens in project seeps, Marshes and area. swamps, Upper montane coniferous forest Epilobium Oregon 1 B.2 None None Jun -Sep Bogs and fens, Lower mesic No meadows, oreganum fireweed montane coniferous seeps, bogs or forest, Meadows and fens in project seeps, Upper montane area. coniferous forest Eriogonum Jack's wild 1 B.2 None None Jul -Sep Great Basin scrub, sandy, No forest in luteolum var. buckwheat Upper montane granitic project area. saltuarium coniferous forest Project area only contains disturbed paved areas. SIERRA ECOTONE SOLLRIONS 41 Table 2.4-2 Plant Species of Concern Scientific Name Common CA CESA FESA Blooming Habitat Micro Suitable Name Rare Period Habitat Habitat in Plant Project Area? Rank Glyceria grandis American 2B.3 None None Jun -Aug Bogs and fens, No meadows, manna Meadows and seeps, seeps, bogs or grass Marshes and swamps fens in project (streambanks and lake area. margins) Helodium Blandow's 2B.3 None None Meadows and seeps, Damp soil No meadows blandowii bog moss Subalpine coniferous and seeps forest within the project area. Meesia uliginosa broad- 2B.2 None None Jul, Oct Bogs and fens, damp soil No meadows, nerved Meadows and seeps, seeps, bogs or hump moss Subalpine coniferous fens in project forest, Upper montane area. coniferous forest Phacelia Stebbins' 1 B.2 None None May -Jul Cismontane woodland, No meadows, stebbinsii phacelia Lower montane seeps, bogs or coniferous forest, fens in project Meadows and seeps area. Pinus albicaulis Whitebark None None PT May -Jun Subalpine to timberline No subalpine pine zones. or timberline habitat is within project area. Potamogeton Robbins' 2B.3 None None Jul -Aug Marshes and swamps No marshes robbinsii pondweed (deep water, lakes) and swamps SIERRA ECOTONE SOLLRIONS 41 Table 2.4-2 Plant Species of Concern Scientific Name Common CA CESA FESA Blooming Habitat Micro Suitable Name Rare Period Habitat Habitat in Plant Project Area? Rank within the project area. Rhamnus alder 2B.2 None None May -Jul Lower montane No meadows, alnifolia buckthorn coniferous forest, seeps, Meadows and seeps, marshes or Riparian scrub, Upper swamps in montane coniferous project area. forest Rorippa Tahoe 1 B.1 CE None May -Sep Lower montane decomposed Project area subumbellata yellow cress coniferous forest, granitic does not Meadows and seeps, beaches include beaches and lake beaches of margin of Lake Tahoe Lake Tahoe. (Stanton 2015) Schoenoplectus water 2B.3 None None Jun- Bogs and fens, No bogs, fens, subterminalis bulrush Aug(Sep) Marshes and swamps marshes, or (montane lake swamps in the margins) project area. Scutellaria marsh 2B.2 None None Jun -Sep Lower montane No meadows, galericulata skullcap coniferous forest, seeps, Meadows and seeps marshes or (mesic), Marshes and swamps in swamps project area. SIERRA ECOTONE SOLLRIONS 43 Table 2.4-2 Plant Species of Concern Scientific Name Common CA CESA FESA Blooming Habitat Micro Suitable Name Rare Period Habitat Habitat in Plant Project Area? Rank Stuckenia slender- 2B.2 None None May -Jul Marshes and swamps No marshes or filiformis ssp. leaved (assorted shallow swamps in alpina pondweed freshwater) project area. Viola purpurea golden 2B.2 None None Apr -Jun Great Basin scrub, sandy No great basin ssp. aurea violet Pinyon and juniper scrub, pinyon woodland and juniper woodland in project area. CE: CA Endangered PT: Proposed Threatened SIERRA ECOTONE SOUITIONS 44 Source: CNPS 2021 2.4.B Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or ❑ ❑ ❑ regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? B) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, and regulations or by the California ❑ ❑ ❑ Department of Fish and Game or U.S. Fish and Wildlife Service? C) Have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) ❑ ❑ ❑ through direct removal, filling, hydrological interruption, or other means? D) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with ❑ ❑ ❑ established native resident or migratory wildlife corridors, or impede the use of wildlife nursery sites? E) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ❑ ❑ ❑ ordinance? F) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, ❑ ❑ ❑ or other approved local, regional, or state habitat conservation plan? 2AC Discussion A) No Impact 45 As shown in Figure 5, the known occurrences of sensitive species are located Suitable habitat is mapped within the Project Area for Sierra Nevada yellow -legged frog (SNYLF). Figure 6 identifies potentially suitable SNYLF habitat around the Project Area. Project activities near potential SNYLF habitat would occur within the ROW of Pioneer Trail and would not pose any direct impact to the habitat. The inclusion of Best Management Practices to control erosion would limit the potential for sediments to drain into suitable habitat. No impacts to stream banks, riparian vegetation or bodies of water will occur as a result of implementation of the proposed Project, and therefore no impacts to SNYLF will occur. The proposed project is not located in any essential fish habitat as defined by the Magnuson -Stevens Act. The closest essential fish habitat is located in the Pacific Ocean along the coast of California. The USFWS species list (see Chapter 6) includes bird species that are protected under the Migratory Bird Treaty Act of 1918 and have potentially suitable habitat in the area surrounding the Project Area. The Project will not result in the removal of any foraging or nesting habitat for the migratory bird species listed; however, indirect impacts to migratory bird species could result because of construction noise and activities associated with the proposed Project. To ensure no impacts to migratory bird species occurs, the Migratory Bird Nest Site Protection Program (design feature 1.3.J) is included in the project description. Through implementation of the above measure, no impacts to nesting migratory bird species will result. As shown in Table 2.4-2 21 plant species that have the potential to occur in within the Project Area based on the database searches. However, suitable habitat is not present for any of the plant species within the Project Area because all work will occur in paved areas or areas previously disturbed immediately adjacent to paved surfaces within the Right -of -Way. Therefore, the Project will not have a substantial adverse effect, either directly or through habitat modifications, on any identified plant or wildlife species. B) No Impact Project activities for the waterline and PRV installations would create temporary disturbance in the El Dorado County ROW of Pioneer Trail. As shown in Figure 8 Stream Environment Zone (SEZ) is located within the project area where the proposed pipeline crosses above Trout Creek. While the area is designated as SEZ no impact to the sensitive area will occur as the pipeline will be within the road prism above the culvert that contains Trout Creek and the SEZ The inclusion of Best Management Practices to control erosion will limit the potential for sediments to drain into SEZ. Therefore, no impact to SEZs will occur as a result of the proposed Project. C) No Impact ® SIERRA ECI 46 The National Wetlands Inventory (USFWS) was searched for the presence of federally protected wetlands within the Project Area. The resulting map is located in Chapter 6, Appendix C. Project activities will occur exclusively within the ROW and will not directly impact any wetlands present within the Project Area. Therefore, there is no impact as a result of the proposed Project. D) No Impact The Project will not interfere or impede the movement of any wildlife species or migratory fish species as Project components would be installed underground or in Right of Ways. No waterways, known migratory wildlife corridors, or wildlife nursery sites will be impeded. Therefore, there is no impact as a result of the proposed Project. E) No Impact The Project will not conflict with TRPA or El Dorado County policies and ordinances aimed at protecting biological resources because all Project activities will occur within the ROW and the Project components provide essential public utility services F) No Impact The Project does not conflict with the provisions of an adopted Habitat Conservation Plan or Natural Community Conservation Plan, because no such plans exist for the Project Area. ® SIERRA ECOTONE SOLUTIONS 47 This Page Intentionally Left Blank SIERRA ECOTONE SOLLRIONS 48 Sources: STPUD; CNDDB, USGS. Map date: March 2, 2022 This Page Intentionally Left Blank (6.1 ECOTONE SOLLRIONS SU i f- 1 o ,1 J ,� n =-� l l SUNDOWN TRL GOLDEN BEAR TRL PROSPEC ____� � _ --- '� � boo N 1 0 De ort 0 Q) 0 y Q V3Q O� 2= � r� �P N W -E �dV S Miles 0 0.25 0.5 )OwA'ST � « w � e 6Q00 /. 1I 2 N 0 7 Y Legend STPUD Service Area - Project Area in Frog Habitat Sierra Nevada Yellow -Legged Frog Suitable Habitat 1 2 N 0I 8J \l t h Pioneer Waterline Replacement Project Figure 6. Sierra Nevada Yellow -Legged Frog Habitat °�► SIERRA ECOTONE SOLUTIONS Sources: STPUD, TRPA, USGS. Map date: March 2, 2022 This Page Intentionally Left Blank SIERRALECOTONE SOLLfTIONS L l F pher w � 1 , \ SUNDOWN TRL ';A GOLDEN BEAR TRL V -- x O� PROS PEP- Z �� jj 1. o ------------- 2 I N La ' 1 o Fa oe 1 y i r ort ' Ilk 0QC o z Jha 1 _ Y � 1 Q _ NADOWA'ST y;F 1 1 2 1 2 N / o p �O /Q� ��a / e 03Q !!! 6 J a 8 r" � P W �P i I o000 CD N o `\` 7Co � S Miles 0 0.25 0.5 Legend Pioneer Waterline Replacement Project .----� Figure 7. �- - - - STPUD Service Area Stream Environment Zones - Project Area Stream Environment Zone SIERRA ECOTONE SOLUTIONS Sources: STPUD, TRPA, USGS. Map date: March 2, 2022 This Page Intentionally Left Blank SIERRA ECOTONE SOLLRIONS 54 2.5 CULTURAL RESOURCES 2.5.A Environmental and Regulatory Settings The National Historic Preservation Act (NHPA) of 1966, as amended (16 USC§ 470 et seq.), is the primary federal legislation that outlines the federal government's responsibility to cultural resources. A cultural resource is a broad term that includes prehistoric, historic, architectural, and traditional cultural properties. Section 106 of the NHPA requires the federal government to take into consideration the effects of an undertaking on cultural resources listed on or eligible for inclusion in the National Register of Historic Places. Those resources that are on or eligible for inclusion on the National Register are referred to as historic properties. The Section 106 process is outlined in the federal regulations at 36 Code of Federal Regulations (CFR) Part 800. If the District utilizes federal funding for the Project, the environmental review must comply with Section 106 of the National Historic Preservation Act. The applicable CEQA process is outlined in CEQA Guidelines Section 15060-15065. For the purposes of CEQA, significant "historical resources" and "unique archaeological resources" are defined as (Section 15064.5[a]): 1. A resource listed in, or determined to be eligible by the State Historical Resources Commission, for listing in the California Register of Historical Resources (Pub. Res. Code SS5024.1, Title 14 CCR, Section 4850 et seq.). 2. A resource included in a local register of historical resources, as defined in section 5020.1(k) of the Public Resources Code or identified as significant in an historical resource survey meeting the requirements section 5024.1(g) of the Public Resources Code, shall be presumed to be historically or culturally significant. Public agencies must treat any such resource as significant unless the preponderance of evidence demonstrates that it is not historically or culturally significant. 3. Any object, building, structure, site, area, place, record, or manuscript which a lead agency determines to be historically significant or significant in the architectural, engineering, scientific, economic, agricultural, educational, social, political, military, or cultural annals of California may be considered to be an historical resource, provided the lead agency's determination is supported by substantial evidence in light of the whole record. The cultural resource report must comply with El Dorado County cultural resources guidelines under the California Environmental Quality Act (CEQA Section 5024, Public Resource Code) and Tahoe Regional Planning Agency procedures (Chapter 67 of the TRPA Code of Ordinances). Cultural studies are customarily performed in a series of phases, each one building upon information gained from the prior study. The inventory phase (Phase 1) involves a pre - field records search and Native American contact (Phase 1A), field reconnaissance/resource discovery (Phase 1 B), and documentation of any cultural resources located within the project area (Phase 1 C). If cultural properties are present ® SIERRA ECOTONE SOLUTIONS 55 and/or it they may be subject to project impacts, their significance is evaluated according to eligibility criteria established in the National Register of Historic Places and/or California Register of Historical Resources (Phase 2). If project redesign to avoid impacts to significant resources is unfeasible, then mitigation measures are implemented (Phase 3). Mitigation (or data recovery) typically involves supplemental archival research, field excavation, photo documentation, mapping, archaeological monitoring, interpretation, etc. The scope of work for this cultural study is designed to satisfy regulations pertaining to aspects of Phase 1 A work. To complete the cultural study for the Project, the District contracted with Susan Lindstrom, Ph.D., a Consulting Archaeologist who meets the Secretary of Interior's Professional Qualifications Standards (48 FR 44738-44739). She has over four decades of professional experience in regional prehistory and history, holds a doctoral degree in anthropology/archaeology and has maintained certification by the Register of Professional Archaeologists (RPA, former Society of Professional Archaeologists) since 1982. The tasks completed include: • review historical and archaeological background research of the project area • review and apply 2020 record search results from the California Historical Resources Information System, North Central Information Center at California State University Sacramento • as per CEQA guidelines and mandates under California Assembly Bill 52, request a records search of the Sacred Lands File by the Native American Heritage Commission and initiate contacts with local tribal organizations identified by the Commission (accomplished by the STPUD) • conduct systematic reconnaissance level cultural resource field survey of the project APE • present findings in a technical report. The cultural contextual background for the current study draws heavily from comprehensive cultural studies conducted in 2015 and 2016 when the District embarked on a District- wide program to install water meters and fire hydrants throughout their service area and tiers off the 2020 Baseline Report (Lindstrom 2020). This work has now been updated in December 2021 with a new records search by the North Central Information Center. The addendum to the 2020 report also outlines a set of cultural resource management protocols to be implemented as part of the necessary agency permitting process. Native American outreach was performed as a part of the updated addendum report prepared for this project. Consultations with the Native American Heritage Commission (NAHC) to request an updated search of the Sacred Land Files were initiated by the STPUD on August 27, 2021. When no response was received, a second request was sent ® SIERRA E0 56 on September 8th, followed by an email on October 22nd and two phone calls in which the NAHC stated that although they had received the STPUD requests, short staffing was delaying a response. The STPUD then proceeded to contact individual Tribes on the Commission's contact list in a prior records search provided on November 19, 2018 to the following tribes: • Clyde Prout, Chairperson and Pamela Cubbler, Treasurer of the Colfax-Todds Valley Consolidated Tribe • Sara Dutschke Setchwaelo, Chairperson of the lone Band of Miwok Indians • Cosme A. Valdez, Chairperson of the Nashville Enterprise Miwok-Maidu-Nishinam Tribe • Regina Cuellar, Chairperson of the Shingle Springs Band of Miwok Indians • Don Ryberg, Chairperson, and Grayson Coney, Cultural Director for the Tsi Akim Maidu • Gene Whitehouse, Chairperson of the United Auburn Indian Community of the Auburn Rancheria • Darrel Cruz, Tribal Historic Preservation Officer for the Washoe Tribe of Nevada and California Certified letters containing a project description and map were mailed on October 29, 2021, with follow-up emails/fax sent on December 16th. No response was received. Neither prefield research nor archaeological field survey identified any cultural resources within the project APE (Lindstrom 2021). Although multiple residences over 50 years old were identified within viewshed of the project APE, ones that meet the National and California Register age criteria and are treated as historic properties for the purposes of this project, these historic buildings will not be physically and directly impacted by project activities, nor will visual components introduced by the project have an indirect impact on the viewshed of the APE. Replacement of an existing buried pipeline will not alter the current neighborhood landscape character and any potential impacts associated with project activities (e.g., audible, air quality, etc.) would be temporary and limited to the duration of construction activities (Lindstrom 2021) 2.53 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Cause a substantial adverse change in the significance of ❑ ❑ ® ❑ a historical resource as defined in §15064.5? SIERRA ECOTONE SOLUTIONS 57 B) Cause a substantial adverse change in the significance of ❑ ❑ ® ❑ an archaeological resource pursuant to §15064.5? C) Directly or indirectly destroy a unique paleontological ❑ ❑ ® ❑ resource or site or unique geologic feature? D) Disturb any human remains, including those interred ❑ ❑ ® ❑ outside of formal cemeteries? 2.5.0 Discussion A) Less than Significant Impact As reported in the South Tahoe Public Utility District Water Line Replacement Project 2021 (Pioneer Trail/Bijou/Herbert-Walkup Areas) Cultural Resource Inventory (Lindstrom 2021), the Project will not result in a negative impact on historical resources in the Project Area. The Project Area has been disturbed by past road installation, and associated service connections. If historic resources are discovered during installation of the project, construction activity will be immediately stopped and a qualified archeologist will be contacted. Because no historical resources as defined in PRC section 15064.5 will be disturbed, the Project would not cause substantial adverse change in the significance of a historical resource. The potential impact is less than significant. B) Less than Significant Impact Due to the fact the time when previous excavation and disturbance of the area last occurred is unknown, there is a remote potential to unearth undiscovered archeological resources. Requirements for protection of unknown resources, as described in Section 1.3.G, will be included in construction contracts to ensure that there will be no impacts to previously undiscovered resources. Should previously undiscovered resources be unearthed, ground disturbance activities will cease until consultation with a qualified archaeologist occurs and recommended procedures are implemented. The Project will not cause a substantial adverse change in the significance of a previously unknown archaeological resource because avoidance of such resources will occur during Project construction and long-term operations. The level of impact would be less than significant. C) Less than Significant Impact There are no mapped paleontological resources or known unique geologic features within the Project Area, and unique paleontological or unique geologic features are not expected to occur on Project Area parcels. The existing environments do not usually contain intact fossils. The Project requires excavation and disturbance in areas that have been previously disturbed for water tank and residential development and that are not mapped as a high or moderate resource potential geologic deposit, formation or rock unit. Additionally, in the unlikely event that paleontological resources are discovered during construction, section 1.3.G, Cultural Protection Measures, requires that ground ® SIERRA ECI 58 disturbance activities cease and until consultation with a qualified archaeologist occurs. As a result, the Project will avoid and protect encountered resources and would result in less than significant impacts to paleontological resources. D) Less than Significant Impact No known burial sites exist within the Project Area, and during prior projects performed by STPLID, no human remains were encountered. If human remains are unearthed, the El Eldorado County Coroner will be contacted in compliance with CEQA Guidelines Section 15064.5(e) and 43 CFR 10, Native American Graves Protection and Repatriation Regulations. 2.6 GEOLOGY, SOILS, SEISMIC & LAND COVERAGE 2.6.A Environmental and Regulatory Settings The Lake Tahoe basin is bounded by the Sierra Nevada Mountain Range to the west and the Carson Mountain Range to the east and is part of the Walker Lane fault complex that includes many normal and strike -slip faults (Seitz 2015). The Lake Tahoe basin was formed by the same normal faulting that created the Basin and Range physiographic province to the east of the Tahoe Basin in Nevada. The region is seismically complex containing three major faults within the area: the West Tahoe Fault; the Stateline Fault; and the Incline Village Fault. There are no active faults within the Project Area, but the West Tahoe Fault lies several miles to the west. The topography of the Lake Tahoe Basin is varied with at times complex terrain and elevations ranging from 6,220 feet at lake level to 10,000 feet at Monument and Freel Peaks outside of South Lake Tahoe, California. The Project Area consists of relatively flat slopes within the El Dorado County ROW. The Alquist-Priolo Earthquake Fault Zoning Act (1972; PRC Section 2621-2630) regulates construction in active fault corridors and prohibits the location of most types of structures intended for human occupancy across the traces of active faults. The act defines criteria for identifying active faults, giving legal support to terms such as active and inactive and establishes a process for reviewing building proposals in Earthquake Fault Zones. An active fault is one that has had surface displacement within Holocene time or the last 11,000 years, as defined by the Alquist-Priolo Earthquake Fault Zoning Act. The Seismic Hazards Mapping Act (1990 PRC Section 2690-2699.6) directs the State Geologist to delineate "Zones of Required Investigation". A Seismic Hazard Zone is a regulatory zone that encompasses areas prone to ground failure and other earthquake - related hazards including soil liquefaction, earthquake -induced landslides, surface fault rupture, and tsunami inundation. Cities and Counties located within the zones must regulate certain projects for purposes of reducing the risk to life and property from surface fault rupture during earthquakes. The California Geological Survey produces official maps that delineate the required zones. The official maps for the Emerald Bay and Echo Lake quadrangles depict the West Tahoe Fault approximately 4 miles to the east of the Project ® SIERRA ECOTONE SOLUTIONS 59 Area. The California Earthquake Hazards Zone Application ("EQ Zapp") shows this same information ( https://maps.conservation.ca.qov/cqs/EQZAPP/apD/; accessed December 6, 2021) According to the California Division of Mines and Geology and California Geological Survey mapping, the District's service area overlies Quaternary period non -marine alluvium, lake, playa and terrace deposits, both unconsolidated and semi- consolidated. Results from the NRCS Web Soils Survey of the Project Area may be found in Appendix 6. (NRCS 2007; http://websoilsurvey.sc.egov.usda.gov/App/Homepage.htm, Accessed 10 January 2022). A total of nine soil map units from the Tahoe Soil Survey are contained within the Project Area. Four soil types occur in less than 10% of the AQI; Tahoe Complex (0-2% slopes), Christopher loamy coarse sand (9-30% slopes), Oneidas coarse sandy loam (0-5% slopes) and Oneidas coarse sandy loam (5-15% slopes). Four soil types occur less than 20% of the AQI; Christopher gravelly loamy coarse sand (9-30% slopes), Christopher loamy coarse sand (0-9% slopes), Geffo gravelly loamy coarse sand (2-9% slopes), Jabu coarse sandy loam (0-9% slopes). One soil type occurs in 35% of the AQI; Ubaj sandy loam (0-9% slopes). 2.6.113 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Expose people or structures to potential substantial adverse effects, including the risk of loss, injury or death involving: i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other ❑ ❑ ❑ substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42. ii) Strong seismic ground shaking? ❑ ❑ ❑ iii) Seismic -related ground failure, including ❑ ❑ ❑ liquefaction? iv) Landslides? ❑ ❑ ❑ B) Result in substantial soil erosion or the loss of topsoil? ❑ ❑ ❑ ® SIERRA ECI bU C) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the Project and ❑ ❑ ❑ potentially result in on- or off -site landslide, lateral spreading, subsidence, liquefaction or collapse? D) Be located on expansive soil, as defined in Table 18-1- B of the Uniform Building Code (1994), creating substantial ❑ ❑ ❑ risks to life or property? E) Have soils incapable of adequately supporting the use? ❑ ❑ ❑ 2.6.0 Discussion A i-iv) No Impact The West Tahoe Fault stretches from Dollar Point south to Emerald Bay and then skirts the southwestern edges of both Cascade and Fallen Leaf Lakes. The Project Area is approximately 4 miles to the east of the West Tahoe Fault, as delineated on the 2016 map for the Emerald Bay Quadrangle issued by the State Geologist, (https://www.edcgov. us/government/planning/public%20notices/2016/documents/20160 610 ReleaseofOfficialMapsTahoeEarthguakeFaultZones.pdf; accessed December 6, 2021.) Although the Seismic Hazard Zones for soil liquefaction and earthquake induces landslides have not been officially evaluated for the Project Area, the Project components would be installed within the existing El Dorado County ROW that is highly disturbed. Therefore, the Project would not result in exposure of people or structures to potential substantial adverse effects, including the risk of loss, injury or death involving the i) rupture of the existing fault, ii) seismic ground shaking, iii) seismic -related ground failure, including liquefaction, or iv) landslides. B) No Impact The Project will not result in substantial soil erosion or the loss of topsoil because all Project components will result in temporary impacts within the existing disturbed ROW. After completion of the Project, the ROW will be re -paved. Therefore, the Project has no impact on soil erosion or topsoil. C) Less than Significant Impact The Project would have no impact on the potential for on or off -site landslide, lateral spreading, subsidence, liquefaction or collapse because the Project Area within the ROW is primarily flat and no unstable soil conditions exist that would lead to these events. D) No Impact &.1 ... A ECOTONE SOLUTIONS 61 The Project will not be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), and therefore, would not pose substantial risks to life or property from unstable soil conditions. E) No Impact The Project will not require the use of new septic tanks or alternative on -site wastewater disposal systems. Therefore, no impacts from the installation and use of septic tanks or alternative wastewater disposal systems would occur as a result of the Project. 2.7 GREENHOUSE GASES & CLIMATE CHANGE 2.7.A Environmental and Regulatory Settings The State of California has implemented emissions reduction targets through Assembly Bill (AB) 32 and Senate Bill (SB) 32 and has set a goal of carbon neutrality by 2045. The City of South Lake Tahoe (City) has built on these goals and has developed its first Climate Action Plan (CAP), which was adopted by City Council on October 20th, 2020.The CAP outlines strategies for reducing greenhouse gas (GHG) emissions in various sectors, including transportation, building energy, land use, carbon sequestration and watershed health, and water and solid waste. It also includes adaptation strategies. Becoming the 26th city in the nation to do so, the City adopted Resolution 2017-26, Establishing Renewable Energy and Carbon Emissions Reduction Goals. These goals include 50% municipal renewable energy by 2025, 100% municipal renewable energy by 2032, and 100% community renewable electricity by 2032. The resolution additionally outlines the emissions reduction targets of a 50% reduction in community -wide emissions by 2030 and an 80% reduction in community -wide emissions by 2040. The CAP provides the guidance to reach these goals. The District adopted a Climate Action Plan for the Capital Improvement Program in December 2019. This CAP utilizes the following framework to address the causes and effects of climate change that affect the District: • Explore historical and future climate hazards that may affect the District • Evaluate climate vulnerabilities for the District facilities and assets • Begin a Greenhouse Gas (GHG) Inventory of major district facilities and assets based • on available data • Conduct a qualitative risk analysis for major District facilities and assets • Identify and weigh potential actions to mitigate climate hazard vulnerability, assigning • qualitative cost of implementation. ® SIERRA ECI U Using this framework, the District will identify a series of specific actions in its authority that it intends to take to address the causes and effects of climate change. In El Dorado County, the primary source of GHG is fossil fuel combustion mainly in the transportation sector (estimated at 70% of countywide GHG emissions). A distant second are residential sources (approximately 20%), and commercial/industrial sources are third (approximately 7%). The remaining sources are waste/landfill (approximately 3%) and agricultural (<1 %). In 2008, the El Dorado County adopted the "Environmental Vision for El Dorado County" Resolution No. 29-2008, which sets forth goals and calls for implementation of positive environmental changes to reduce global impact, improve air quality and reduce dependence on landfills, promote alternative energies, increase recycling, and encourage local governments to adopt green and sustainable practices. The El Dorado County Air Quality Management District (EDCAQMD), in association with a committee of air districts in the Sacramento region, has developed GHG thresholds that are intended to evaluate a project for consistency with GHG targets established in AB 32, particularly for emissions occurring by 2020. For the evaluation of construction -related emissions, the EDCAQMD recommends using the mass emission threshold of 1,100 metric tons (MT) of carbon dioxide equivalents (CO2e) per year. For the evaluation of operational emission, the EDCAQMD recommends a two-tier approach: • Tier I. Operational emissions of a project would not have a significant impact on the environment if they are less than 1,100 metric tons of CO2e per year. • Tier II (Performance -based threshold). Projects with operational emissions that exceed 1,100 metric tons of CO2e per year, but are able to demonstrate a 21.7 percent reduction from a "No Action Taken" scenario compared to the proposed project operating in 2020 would not conflict with California Air Quality Board CARB's Scoping Plan. 2.7.113 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the ❑ ❑ ® ❑ environment? B) Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse ❑ ❑ ❑ gases? &.1 ... A ECOTONE SOLUTIONS 63 2.7.0 Discussion A) Less than Significant Impact The assessment of GHG emissions is based on guidance from the El Dorado County Air Quality Management District (EDCAQMD). The EDCAQMD has established an emission threshold of 1,100 MT of CO2e per year for construction and operational emissions in the County. During the construction phase of the Project, construction activities will generate GHG emissions. These emissions are associated with workers commuting to the construction site and the operation of construction equipment and tools. Implementation of the Construction Emissions Control Plan detailed in Section 1.313 will reduce emissions associated the construction. The Project will not result in any operational emissions because the pipelines are located underground and the PRVs do not make any emissions The Road Construction Emissions Model V 8.1.0 (RCE Model) estimates total construction phase GHG emissions of 3,475 tons/day CO2e. The model over -estimates emissions because it is not possible to eliminate operational emissions in the calculations. Estimated Project emissions of 185 tons CO2e are far below the EDCAMD threshold and would not have a significant impact on the environment. B) No Impact The Project will not conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of GHG because such plans do not place specific thresholds on construction emissions. 2.8 HAZARDS & HAZARDOUS MATERIALS 2.8.A Environmental and Regulatory Settings Projects that require the use of construction equipment always have an associated risk of accidental spill of hazardous materials. Hazardous materials can be a liquid, a solid, or a gas. Examples of hazardous materials are explosives, flammables, corrosives, radioactive materials, and poisons. Transportation of such materials is highly regulated to ensure the safety of the motoring public. The Resource Conservation and Recovery Act (RCRA) gives the United States Environmental Protection Agency (USEPA) the authority to control the generation, transportation, treatment, storage, and disposal of hazardous waste. A search of the USEPA Envirofacts Database revealed no RCRA sites located within the Project Area (accessed December 8, 2021): https://geopub.epa.gov/mvem/efmap/index.html?ve=8,38.921664,- 119.983000&pText=96150,%20South%20Lake%20Tahoe, %20California Most of California's hazardous material safety regulations are found in Title 13 of the California Code of Regulations, Division 2, Chapter 6. The Hazardous Waste Tracking ® SIERRA ECI b4 System (HWTS) is the California Department of Toxic Substances Control's (DTSC) data repository for hazardous waste manifest and ID Number information. The system generates reports from 1993 to the present on hazardous waste shipments for generators, transporters, and treatment, storage and disposal facilities (TSDFs). A search of HWTS Geotracker Database (accessed December 8, 2021) revealed no hazardous material sites located within the Project Area: https://geotracker.waterboards.ca.gov/map/?CM D=runreport&mvaddress=south+lake+ta hoe The El Dorado County Department of Environmental Management, Hazardous Materials Division is the Cal -EPA certified Unified Program Agency for El Dorado County and is responsible for implementing the hazardous materials and household hazardous waste programs to ensure that hazardous materials and hazardous waste are properly managed. The Unified Program streamlines the administrative requirements, permits, inspections, and enforcement activities for a variety of environmental and emergency management programs related to hazardous waste. El Dorado County also maintains a Hazardous Materials Emergency Area Plan. Under the California Fire Code Hazardous Materials Management Plan, local fire departments screen Hazardous Materials Inventory Statements and inspect sites. The El Dorado County Air Quality Management District evaluates projects for possible toxic emissions and also issues permits, as necessary. 2.8.113 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous ❑ ❑ ® ❑ materials? B) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions ❑ ❑ ® ❑ involving the likely release of hazardous materials into the environment? C) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one -quarter ❑ ❑ ® ❑ mile of an existing or proposed school? &.1 ... A ECOTONE SOUJTIONS 65 D) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section ❑ ❑ ❑ 65962.5 and, as a result, would it create a significant hazard to the public or the environment? E) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a ❑ ❑ ® ❑ safety hazard for people residing or working in the Project Area? F) For a Project within the vicinity of a private airstrip, would the Project result in a safety hazard for people residing or working ❑ ❑ ❑ in the project site? G) Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation ❑ ❑ ❑ plan? H) Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where ❑ ❑ ❑ wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands? 2.8.0 Discussion A) Less than Significant Impact The Project would require the transportation, use, storage, and handling of minor amounts of hazardous materials needed for the waterlines and fire hydrant installations and asphalt cutting and re -paving. The proposed project will utilize products that contain volatile organic compounds (VOC): Carboguard 890 (1.81 Ibs/gal), Carbothane 134 (1.58 Ibs/gal), Bar -Rust 223H (1.41 Ibs/gal) and Enviroline 230 (0.13 Ibs/gal). The above products will be handled in accordance with existing rules and regulations. All materials used will meet El Dorado County Air Quality Management District Rule 215 -VOC Content Limits for Industrial Maintenance Coatings. The Project will not involve the transportation of explosives, inhalation hazards or radioactive materials. The amount of hazardous materials necessary for the Project would not be substantial enough to create a significant hazard to the public or environment from the routine transport, use or disposal of hazardous materials during project implementation. The District will ensure that the risk is maintained at less than significant ® SIERRA E0 bb levels by requiring the selected contractor to comply with all federal, State, and local regulations and implement the Hazard and Safety Control Plan detailed in Section 1.3.1. B) Less than Significant Impact The quantities of hazardous substances utilized for Project construction are relatively small and would not be substantial enough to create a significant hazard to the public or environment from accidental release during project implementation. The risk of accidental exposure will be reduced to less than significant levels through the implementation of the Hazard and Safety Control Plan detailed in Section 1.3.1 and BMPs for safe handling and use. The Project contractor will be required to comply with all federal, State, and local regulations regarding the use, transportation, and disposal of hazardous materials. Therefore, the risk from accidental release of hazardous materials during construction would be less than significant. C) Less than Significant Impact The Sierra House Elementary School is located within one quarter of a mile of the Project Area. The Project does not involve the use of acutely hazardous materials. Implementation of the Hazard and Safety Control Plan detailed in Section 1.3.1 will minimize the risk of hazardous emissions during construction. The Project contractor will be required to comply with all federal, State, and local regulations regarding the use and handling of hazardous materials on the construction site. Therefore, the risk from accidental emissions or release of hazardous materials during construction would be less than significant. D) No Impact The California Department of Toxic Substances has compiled a special list of hazardous materials sites pursuant to Government Code Section 65962.5 called the "Cortese" list. A search of this list on the EnviroStor database did not find any sites located in El Dorado County.https://www.envirostor.dtsc.ca.gov/public/search.asr)?cmd=search&reI)orttvl)e=C ORTESE&site type Accessed December 9, 2021. Therefore, the Project has no impact. E) Less than Significant Impact A portion of the Project will be implemented in residential neighborhoods within two miles of the airport. The risk of accidental exposure of hazardous substances to persons residing or working in the area will be reduced to less than significant levels through the implementation of the Hazard and Safety Control Plan detailed in Section 1.3.1 and BMPs for safe handling and use. The Project contractor will be required to comply with all federal, State, and local regulations regarding the use, transportation, and disposal of hazardous materials. Therefore, the risk from accidental release of hazardous materials during construction would be less than significant. F) No Impact &.1 ... A ECOTONE SOLUTIONS 67 The Project is not located in the vicinity of a private airstrip, and therefore, creates no impact to human safety hazards in designated airstrip influence areas. G) No Impact Project -related activities will not interfere with an emergency response plan or emergency evacuation plan, including but not limited to the El Dorado County Emergency Operations Plan, the City of South Lake Tahoe Emergency Operations Plan, and the South Lake Tahoe Fire Department Fire Planning Process. Where temporary lanes closures are needed during Project construction, local traffic and emergency response vehicles will be allowed to pass though at all times. Therefore, the Project will result in no impacts to emergency response or evacuation plans. H) No Impact Catastrophic wildfire poses an imminent threat to South Lake Tahoe and surrounding areas. The Project includes new waterline and fire hydrant installation to increase flows for fire -fighting. Therefore, the Project will have a beneficial impact on fire suppression capacity. The Project will not increase risk involving wildfires because the Project would not increase residential land use densities in the wildland urban interface. Therefore, the Project has no impact. 2.9 HYDROLOGY AND WATER QUALITY 2.9.A Environmental and Regulatory Settings The Lake Tahoe watershed (USGS HUC 18100200) is 505 sq. miles (1,310 km2) and includes the land area of the Lake Tahoe Basin in California and Nevada that drains to the lake. A total of 63 tributaries drain an area about the same size as the lake and produce half its water, with the balance entering as rain or snow falling directly on it. The Truckee River is the lake's only outlet, flowing northeast through Reno, Nevada, into Pyramid Lake. The river carries one third of the water that leaves the lake, with the balance evaporating from the lake's surface. The flow of the Truckee River and the height of the lake are controlled by the Lake Tahoe Dam at the outlet in Tahoe City. The natural rim of the lake is at 6,223 ft. above sea level. A spillway at the dam controls overflow and allows the lake to fill with an additional 6 feet of water storage to a maximum legal limit of 6,229.1 ft. Lake Tahoe is oligotrophic, meaning it is nutrient limited, largely because of the high proportion of nutrient poor granitic rock in the basin. This nutrient limitation is what gives the lake its famed clarity. However, the lake is becoming increasingly eutrophic (having an excessive richness of nutrients), with primary productivity increasing every year and clarity decreasing. Suspended particulate matter from urban stormwater runoff is the dominant cause of the loss of clarity. Historic clarity was around 100 feet in depth. Clarity depth in 2019 averaged only 62.7 feet. The lowest average value recorded was 60 feet in 2017. ® SIERRA E0 b8 The State of California Lahontan Regional Water Quality Control Board (Lahontan) is directed by the federal Clean Water Act, the Porter -Cologne Water Quality Control Act, and other federal and state laws to set water quality standards and to regulate activities in the Lahontan Region of California, which includes the California portion of the Lake Tahoe Basin. Water quality management plans are required for certain areas under Section 208 of the Clean Water Act. The Lake Tahoe (208) Water Quality Management Plan outlines water quality standards and non -point source management and control in the Lake Tahoe Basin in both the California and Nevada. In California, Regional Water Quality Control Boards maintain Water Quality Control Plans (Basin Plans) for each major hydrologic basin within the state. Lake Tahoe is within the North Lahontan Basin which includes parts of Modoc County in the north and south to Bridgeport in Mono County. The Lahontan Basin Plan outlines water quality conditions, designates beneficial uses for water bodies, identifies water quality problems associated with human activities, and establishes water quality objectives and measures to protect beneficial uses. The Basin Plan sets forth water quality standards, waste discharge prohibitions and control measures for surface and ground waters of the entire Lahontan Region. Chapter 5 of the plan is specific to the Lake Tahoe Basin and specifies water quality standards and control measures. The TRPA Regional Plan establishes a number of goals and policies that address water quality in the Lake Tahoe Region, as implemented through the Code of Ordinances Chapter 33, Grading and Construction, Chapter 35, Natural Hazard Standards, Chapter 36, Design Standards, and Chapter 60, Water Quality, which detail the requirements for soil and water protection, water quality controls, and BMPs. The District's MOU with TRPA for Public Works Providers allows for repair and maintenance of underground facilities without TRPA's review. 2.9.113 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Violate any water quality standards or waste discharge ❑ ❑ ® ❑ requirements? B) Substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there would ❑ ❑ ❑ be a net deficit in aquifer volume or a lowering of the local groundwater table level (e.g., the production rate of pre-existing ®SIERRA ECOTONE .-ILJTIONS • e nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted)? C) Substantially alter the existing drainage pattern of the area, including through the alteration of the course of a stream or river, ❑ ❑ ❑ in a manner which would result in substantial erosion or siltation on- or off -site? D) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream ❑ ❑ ❑ or river, or substantially increase the rate or amount of surface runoff in a manner, which would result in flooding on- or off -site? E) Create or contribute runoff water which would exceed the capability of existing or planned stormwater drainage systems or ❑ ❑ ® ❑ provide substantial additional sources of polluted runoff? F) Otherwise substantially degrade water quality? ❑ ❑ ❑ G) Place housing within a 100-year flood hazard area as mapped on a federal Flood Hazard Boundary or Flood Insurance ❑ ❑ ❑ Rate Map or other flood hazard delineation map? H) Place within a 100-year flood hazard area structures, which ❑ ❑ ❑ would impede or redirect flood flows? 1) Expose people or structures to a significant risk of loss, injury or death involving flooding, including flooding as a result of the ❑ ❑ ❑ failure of a levee or dam? J) Cause inundation by seiche, tsunami, or mudflow? ❑ ❑ ❑ 2.9.0 Discussion A) Less than Significant Impact A violation of any federal, regional or State of California water quality standards or waste discharge requirements would constitute a significant impact. Project activities are limited to the ROW within El Dorado County. Project operation would not result in direct or indirect impacts to surface water quality that would violate standards because the waterlines are located underground and the PRVs are very small structures located in the ROW. During construction, storm water runoff could occur through existing storm water drainage systems, including curb and gutter systems and drop inlets along the road ROW. Best Management Practices (BMPs) to limit storm water runoff (1.3.D BMPs to Protect Surface and Ground Water/Sediment and Erosion Control Plan) will be installed and maintained ® SIERRA ECI /u throughout the construction period. The Project design also includes measures to limit emissions (1.3.B Construction Emission Control Plan) and control dust (1.3.0 Fugitive Dust Control Plan) from construction. In addition, the Project contractor will be required to identify methods and techniques to minimize the potential for spill and implement approved containment and spill -control practices (1.3. 1 Hazard and Safety Control Plan spill control) during construction. Following excavation and trenching, paved areas will be returned to existing grade and repaved. Unpaved areas will be revegetated to minimize the potential for erosion from wind and surface water. The District will require the selected contractor to comply with all federal, State, and local water quality regulations and implement specified Project design measures. Therefore, Project construction would not result in a violation of water quality standards or waste discharge requirements and the risk to water quality is less than significant. B) No Impact Project activities that substantially deplete groundwater supplies or interfere with aquifer recharge or existing hydrologic conditions would constitute a significant impact. The proposed Project does not involve new extraction of groundwater and would not create new or additional impervious surfaces that could significantly alter groundwater recharge. Therefore, the Project has no impact on groundwater supplies. C) No Impact If a project substantially alters the existing drainage pattern of an area in a manner that results in substantial erosion or siltation on or off -site, the impacts would be considered significant. Project activities are limited to the ROW and construction will not result in new or additional disturbance outside of the ROW. Project operation would not alter existing drainage patterns or alter the course of a stream or river because the waterlines are below ground and the small concrete pads for the PRVs are in the road shoulder Therefore, the Project will not that would result in substantial erosion or siltation on -or off -site and the Project has no impact. D) No Impact If a project substantially alters the existing drainage pattern of an area or alters the course of a stream or river that would result in substantial flooding on -or off -site, the impacts would be considered significant. Project activities are limited to the ROW and construction will not result in new or additional disturbance outside of the ROW. Project operation would not alter existing drainage patterns or alter the course of a stream or river because the components are primarily ® SIERRA ECOTONE SOLUTIONS 71 below ground. Therefore, the Project would not result in substantial flooding on -or off -site and the Project has no impact. E) Less than Significant Impact If a project creates or contributes runoff water that would exceed the capability of existing or planned stormwater drainage systems or substantially increases polluted runoff, the impacts would be considered significant. Storm water runoff could occur through existing storm water drainage systems, including curb and gutter systems and drop inlets along the road ROW. The Project design includes Best Management Practices (BMPs) to limit storm water runoff (1.3.D BMPs to Protect Surface and Ground Water/Sediment and Erosion Control Plan) that will be installed and maintained throughout the construction period. The District will require the selected contractor to implement specified Project design measures to limit storm water runoff during construction. Following excavation and trenching, paved areas will be returned to existing grade and repaved. Unpaved areas will be revegetated to minimize the potential for erosion from wind and surface water. Project operation would not result in storm runoff because the components are primarily below ground or are very small (fire hydrants and PRVs). Therefore, the Project would have a less than significant impact on source of polluted runoff. F) No Impact Project activities are limited to the ROW within El Dorado County. Other than potential storm runoff, construction activities in paved areas would not be expected to result in substantial direct or indirect other impacts that degrade water quality because Project components are below ground. Therefore, the Project would have no impact on water quality. G) No Impact Significant impacts may result if the Project would place housing within a 100-year flood hazard area as mapped on a federal Flood Hazard Boundary or Flood Insurance Rate Map or other flood hazard delineation map. Figure 8 depicts the Project Area FEMA floodplains. The Project does not involve the installation of housing and therefore, no impacts to property flood risk would result. H) No Impact Significant impacts may result if the Project would place structures within a 100-year flood hazard area that would impede or redirect flood flows. The Project does not involve any structure that could impede flows because the pipelines are below ground surface. Therefore, no impacts to flood risk would result. ® SIERRA E0 12 1) No Impact A project that would expose people or structures to a new significant risk of loss, injury, or death involving flooding, including flooding as a result of the failure of a levee or dam, would result in significant impacts. The installation of water pipelines would have no impact on flood risk because the Project components are located below ground or have an insignificant footprint. No Project activities would occur in the vicinity of a levee or dam. Therefore, the Project has no impact on flood risk. J) No Impact A Project that would cause inundation by seiche, tsunami, or mudflow would constitute a significant impact. The installation of water pipelines and fire hydrants would not increase the risk of large waves occurring on Lake Tahoe or increase the potential for mudflows because the Project components are located below ground. Therefore, the Project would have no impact on the inundation risk from these natural disasters. ® SIERRA ECOTONE SOLUTIONS 73 This Page Intentionally Left Blank ®SIERRA ECOTONE SOLLfTIONS /4 1 1 1 I E PEE SSE ♦ _ iq ah ■ Miles 0 0.25 0.5 1� 9 Tahoe \C I\ \ E Lake Tahoe ` o 6 Community cn,ge — I \ I 3Ir I iul I P �? ♦ o � � PJ0 OP�eP; ♦ , JS0 PEE 0 � fey ♦ I A- V ey 1 SUNDOWN Legend - - - STPUD Service Area 100-year Floddplain - Project Area E7 Regulatory Floodway -y- Pioneer Waterline Replacement Project Figure 8. FEMA Floodplains / l( 1110 SIERRA ECOTONE SOLUTIONS Sources: STPUD, FEMA, USGS. Map date: March 2, 2022 This Page Intentionally Left Blank ®SIERRA ECOTONE SOLLfTIONS /b 2.10 LAND USE AND PLANNING 2.10.A Environmental and Regulatory Settings The Tahoe Basin contains a wide range of land use including commercial uses, residences, tourist accommodations, recreational uses, and wilderness areas. The Pioneer Trail Waterline and Facilities Upgrade Project will occur entirely within the El Dorado County ROW. Under the TRPA Regional Plan, a total of 4 Plan Area Statements (PAS) apply to the residential neighborhoods adjacent to the ROW within the Project Area as listed in Table 2.10-1 below. These Plans specify public utilities as a Permissible Use and pipelines and associated facilities are listed as Special Uses. Although the Truckee Marsh PAS is designated for Conservation, pipelines are an acceptable use with the following special policy: "the expansion, maintenance and upgrade of Transmission and Receiving Facilities shall be limited to existing infrastructure corridors. " The proposed new waterline would be located within the existing infrastructure corridor of Pioneer Trail. TABLE 2.10-1 PLAN AREAS WITHIN THE PROJECT AREA PLAN AREA NUMBER - LAND USE MAX NAME TYPE CLASSIFICATION CNEL Plan Area 50 115-Golden Bear Statement Residential (single family) 106-Montogemery Plan Area Estates Statement Residential (single family) 50 117- Tahoe Paradise Plan Area 50* Washoan Statement Residential (single family) Plan Area 50 100-Truckee Marsh Statement Conservation Notes: Max CNEL = Maximum Community Nose Equivalent Level * the CNEL in the adjacent airport corridor is 60 Source: Sierra Ecotone Solutions LLC 2021 The District currently has a Memorandum of Understanding (MOU) with TRPA (2012) that gives public works providers authority to review their own projects for conformance with TRPA standards. While some components of the proposed Project include repair and maintenance activities that would be covered under the MOU, the installation of new facilities are subject to TRPA review. Information on the TRPA planning and review process for public service projects can be found in Section 1.4. 2.10.113 Checklist SIERRA ECOTONE SOLLRIONS 77 Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Physically divide an established community? ❑ ❑ ❑ B) Conflict with any applicable land use plan, policy, or regulation of an agency with jurisdiction over the Project (including, but not limited to the general plan, specific plan, ❑ ❑ ❑ local coastal program, or zoning ordinance) adopted for the purpose of avoiding or mitigating an environmental effect? C) Conflict with any applicable habitat conservation plan or ❑ ❑ ❑ natural communities conservation plan? 2.10.0 Discussion A) No Impact Installation of the Project will not physically divide an established community because it will occur entirely within the developed ROW and result in very short term temporary impacts. B) No Impact The Pioneer Trail Waterline and Facilities Upgrade Project will occur entirely underground within the ROW. Water systems are essential infrastructure and upgrades to the system would not conflict with any goal or policy under the TRPA Regional Plan, TRPA Code of Ordinances, or El Dorado County policies adopted for the purpose of avoiding or mitigating an environmental effect. The Project also complies with the TRPA Plan Area Statements within the Project Area because pipelines and associated facilities are listed as Special Uses. Therefore, the Project complies with local and regional applicable land use plans, policies, and regulations. C) No Impact No habitat conservation plan or natural community conservation plan are applicable to the Project Area, and therefore, the Project would have no impact on such plans. 2.11 MINERAL RESOURCES 2.11.A Environmental and Regulatory Settings ® SIERRA E0 /8 For the purpose of CEQA analysis, "mineral resources" refers to aggregate resources. Aggregate consists of sand, gravel, and crushed rock. Aggregate provides bulk and strength in some construction materials such as asphalt, concrete and Portland cement concrete. The State Mining and Geology Board establishes guidelines for mineral deposits and classifies Mineral Resource Zones or MRZs. There are no mapped mineral resources within the Project Area. Additionally, a review of the TRPA Regional Plan, the 4 relevant Plan Area Statements, and El Dorado County General Plan identifies no mineral recovery sites within the Project Area. 2.11.B Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the ❑ ❑ ❑ state? B) Result in the loss of availability of a locally -important mineral resource recovery site delineated on a local general plan, ❑ ❑ ❑ specific plan or other land use plan? 2.11.0 Discussion A-B) No Impact A project would cause a potentially significant impact to mineral resource if project actions resulted in the loss of availability of a known mineral resource that would be of value to the region and the residents of California. The Project Area is not located in Mineral Resource Zones 1 through 4 classification areas and there are no economically feasible extraction operations within the Project Area. Applicable Plans do not identify any mineral recovery sites within the Project Area. Therefore, no impacts to mineral resources would occur from the Project. 2.12 NOISE 2.12.A Environmental and Regulatory Settings The TRPA Code of Ordinances Chapter 68 establishes noise standards for single noise events (i.e. for watercraft or off -road vehicles) and cumulative noise levels. Cumulative noise is addressed in the standards of individual area plans, plan area statements (PAS), and community plans and is expressed as a Community Noise Equivalency Level (CNEL) 79 The CNEL is expressed as an A -weighted decibel (dBA) and is the average sound level over a 24-hour period on a scale adjusted to human hearing. For each type of area Plan, the noise produced by any activity or combination of activities may not exceed the established CNEL standard. However, these established noise limitations do not apply to noise from TRPA-approved construction or maintenance projects, or the demolition of structures, provided that such activities are limited to the hours between 8:00 a.m. and 6:30 p.m. Monday through Friday. The Project will occur in the ROW of Pioneer Trail adjacent to residential neighborhoods and open forest land. Automobile traffic on Pioneer Trail is the primary source of existing noise in the area. Within the Region, wilderness and roadless areas and areas with critical wildlife habitats have the most restrictive noise standard (CNEL of 45 dBA). Low -density residential areas and rural outdoor recreation areas have a slightly less restrictive CNEL standard of 50 dBA. The 4 Plan Areas in effect in the Project Area (Montgomery Estates, Golden Bear, Tahoe Washoan, and Truckee Marsh) all have a CNEL of 50dBA. However, because these neighborhoods are all adjacent to the airport where the CNEL is 60dBA, the PAS state that the allowed CNEL may be exceeded at times Higher density and mixed use areas have CNEL standards up to 65 dBA. The Project construction activities would be limited to the hours between 8:00 a.m. and 6:30 p.m., Monday- Friday. General construction equipment that would be utilized for waterline and sewer line projects include excavator, mini -excavator, loader, water truck, service vehicles, small remote sheeps-foot compactor, vacuum truck, sweeper, milling machine, smooth drum compactor, and a paving machine. All but the paving equipment (the last 3 on the list) are used every day within the District's Service Area. This construction equipment may generate intermittent noise levels up to 75 dBA. The Public Health, Safety, and Noise Element of the El Dorado County General Plan addresses community noise problems, in accordance with Government Code Section 65302(f). The acceptable noise level standards do not apply to those activities associated with actual construction of a project as long as such construction occurs between the hours of 7 a.m. and 7 p.m., Monday through Friday, and 8 a.m. and 5 p.m. on weekends, and on federally, recognized holidays. 2.12.B Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the Project result in: A) Exposure of persons to or generation of noise levels in excess of standards established in the local general plan or ❑ ❑ ❑ noise ordinance, or applicable standards of other agencies? &.1 ... A ECOTONE SOUJTIONS 8u Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact B) Exposure of persons to or generation of excessive ❑ ❑ ❑ groundborne vibration or groundborne noise levels? C) A substantial permanent increase in ambient noise levels in ❑ ❑ ❑ the Project vicinity above levels existing without the project? D) A substantial temporary or periodic increase in ambient noise levels in the Project vicinity above levels existing without ❑ ❑ ❑ the project? E) For a Project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the Project expose ❑ ❑ ❑ people residing or working in the project site to excessive noise levels? F) For a Project within the vicinity of a private airstrip, would the Project expose people residing or working in the project site to ❑ ❑ ❑ excessive noise levels? 2.12.0 Discussion A) No Impact Noise generation from the Project during construction activities for the waterline installation and facilities upgrades in the ROW will be temporary and short-term in nature. Construction noise generation that is proposed is similar to trash removal, lawn mowing, and other maintenance noise. The Project construction activities are limited to the hours between 8:00 a.m. and 6:30 p.m., Monday- Friday. TRPA established noise limitations do not apply to noise from TRPA-approved construction or maintenance projects, provided construction is limited to those hours. The acceptable noise level standards in the Public Health, Safety, and Noise Element of the El Dorado County General Plan do not apply to construction activities as long as the construction occurs between the hours of 7 a.m. and 7 p.m., Monday through Friday, and 8 a.m. and 5 p.m. on weekends. Therefore, the Project complies with applicable plans, noise ordinances and standards and will have no impact. B) No Impact Ground -borne vibration is generally defined as an oscillatory motion through a solid medium. A primary source of ground borne vibrations is vehicle traffic. Construction equipment used in trenching and excavation of the water lines would not result in ground - Eli borne vibrations because the District does not use vibratory rollers in re -paving. Therefore, the Project would not expose persons to ground -borne vibration or ground -borne noise levels and would result in no impact. C) No Impact The Project involves temporary construction in the ROW and would not generate any source of noise following completion of construction. Therefore, the Project will not create any permanent increase in ambient noise levels in the Project vicinity above existing levels. D) No Impact The Project construction activities will not include the use of explosives or other materials that would cause a significant single event noise. Construction activities are limited to the hours between 8:00 a.m. and 6:30 p.m., Monday- Friday and would result in a temporary and intermittent increase in ambient noise levels during these hours. However, TRPA Code Section 68 exempts approved construction projects from established noise limitations when construction is limited to those hours. Therefore, the temporary increase in ambient noise levels in the Project vicinity are not considered substantial and would result in no impact. E) No Impact The Project Area is not located within the Airport Plan Area Statement (PAS) that includes the Lake Tahoe Airport (KTVL) and surrounding area along Highway 50. The portions of Pioneer Trail where the work would occur is located within 2 miles to the east of the airport. Project construction activities include temporary increases in noise between 8:00 a.m. and 6:30 p.m., Monday- Friday but will not include the use of explosives or other materials that would cause a significant single event noise. Therefore, the Project will not expose people residing or working in the area to excessive noise and the Project has no impact. F) No Impact The Project would not be located within the vicinity of a private airstrip, and therefore, would not expose people working in the Project site to excessive noise levels from air traffic. 2.13 POPULATION & HOUSING 2.13.A Environmental and Regulatory Settings Population growth in the Lake Tahoe Region has been slow because of basin -wide growth -control measures, ongoing conversion of resident homes to second homes, ® SIERRA E0 8 urbanization outside the area, and increased employee commuting to communities outside of the Basin in Placerville, California and western Nevada. The population in the South Lake Tahoe area was 21,403 persons in the 2010 Census (US Census Bureau). The estimated population in July, 2019 was 22,197 which represents a growth rate of 3.7% and an annual growth rate of 0.4%. Population growth in South Lake Tahoe and the surrounding region occurs at a low rate due to stringent constraints on new housing development in the TRPA Regional Plan and Code of Ordinances. Housing in the South Tahoe Region ranges from low-income rental units, single family dwellings, timeshares, to million -dollar resort homes. According to the 2010 U.S. Census, there were approximately 15,087 housing units in the South Lake Tahoe area, many of which are second homes. From 2014-2018 the owner -occupied housing rate was an estimated 44% (httl)s://www.census.qov/quickfacts/southlaketahoecitycalifornia). 2.13.113 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Induce substantial population growth in an area, either directly (e.g., by proposing new homes and businesses) or El El Elindirectly (e.g., through extension of roads or other infrastructure)? B) Displace substantial numbers of existing housing, necessitating the construction of replacement housing ❑ ❑ ❑ elsewhere? C) Displace substantial numbers of people necessitating the ❑ ❑ ❑ construction of replacement housing elsewhere? 2.13.0 Discussion A) No Impact The upgrades proposed in the Project apply to the existing municipal water system. The new waterline and associated PRVs on Pioneer Trail, and the 9 new fire hydrants would result in improved water efficiency and enhanced fire protection capability within the community the District serves. The new 1.5 miles of water pipeline and addition of fire hydrants do not represent a significant expansion of infrastructure that would indirectly increase population because no additional water supply is required. Therefore, the Project would not induce substantial population growth in the area and would have no impact. B) No Impact The Project displaces no existing housing and thus would not necessitate the construction of replacement housing. C) No Impact The Project displaces no people and thus would not necessitate the construction of replacement housing. 2.14 PUBLIC SERVICES 2.14.A Environmental and Regulatory Settings The Project Area is located within unincorporated parts of El Dorado County. Fire Protection is provided by the Lake Valley Fire Department Station 6 located near the intersection of Golden Bear Trail and Pioneer Trail with support from the US Forest Service and CalFire, as necessary. Police protection is provided by the El Dorado County Sheriff's Department. Sierra House elementary is part of the Lake Tahoe Unified School District. There are no parks in the Project Area but there is National Forest Land. The South Tahoe Public Utility District is the sole provider of water and sewer in the Project Area. 2.14.13 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the Project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times or other performance objectives for any of the public services: A) Fire Protection? ❑ ❑ ❑ B) Police Protection? ❑ ❑ ❑ C) Schools? ❑ ❑ ❑ D) Parks? ❑ ❑ ❑ E) Other public facilities? ❑ ❑ ❑ 2.14.0 Discussion ®SIERRA ECOTONE SOLUTIONS 84 A-E) No Impact The Project will not require additional public services and thus creates no impact to acceptable service ratios, response times or other performance objectives. Existing fire, police, and other governmental services are sufficient to accommodate the service needs of the Project. The Project will not necessitate the expansion of the equipment, facilities, or manpower of responsible fire, police, health, or school services in order to maintain current service ratios and response times. The Project also will not result in substantial adverse physical impacts associated with the provision of new or altered fire, police, health, or school facilities. There will be no need for new or physically altered governmental facilities. The Project would not result in negative impacts to public services. 2.15 RECREATION 2.15.A Environmental and Regulatory Settings The Project Area includes recreation opportunities available on National Forest System land but there are no developed recreation facilities or public parks. Several components of the TRPA Regional Plan address policies and regulations pertaining to recreation. These components include: Environmental Carrying Capacities (i.e., Resolution 82-11); Goals and Policies; and Code of Ordinances Chapters 11 and 12. The TRPA Threshold Evaluation Report (TRPA 2015) reports that recreation thresholds are in attainment. The TRPA transportation map identifies a bicycle lane along Pioneer Trail. Bicycle and vehicle travel within the Project Area may be temporarily disturbed during the water line installation. The Lake Tahoe Bicycle and Pedestrian Plan (TMPO 2010) guides the planning, construction and maintenance of the regional bicycle and pedestrian network and support facilities and programs. The existing and planned network can be viewed at http://gis.tri)a.org/bikemap/. 2.153 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would/Does the project: A) Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial El El El H physical deterioration of the facility would occur or be accelerated? F-IN Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact B) Include recreational facilities or require the construction or expansion of recreational facilities, which might have an ❑ ❑ ❑ adverse physical effect on the environment? 2.15.0 Discussion A-B) No Impact The Project Area does not include neighborhood or regional parks or other recreational facilities. Therefore, the Project would not result in impacts to these facilities or create adverse physical effects on the environment. 2.16 TRANSPORTATION & TRAFFIC 2.16.A Environmental and Regulatory Settings The Project Area encompasses unincorporated parts of El Dorado County. Regional access to the Project Area is provided by US Highway 50. Local access is via Elks Club Drive to the west and Black Bart Ave or Al Tahoe Blvd to the east. The Maintenance and Operations Division of the El Dorado County Transportation Department manages repair, maintenance and replacement of existing County roadway and drainage infrastructure. TRPA is designated as the Tahoe Metropolitan Planning Organization (TMPO) for state and federal transportation planning. In addition to fulfilling the Bi-State Compact's directives, as the TMPO, TRPA must develop a long-range Regional Transportation Plan (RTP) consistent with federal transportation laws. The RTP must also meet statutory requirements in California through the adoption of a "Sustainable Communities Strategy" (SCS). The SCS lays out a plan for reducing passenger vehicle related greenhouse gas (GHG) emissions in California. The goals and policies of the RTP are identical to those in the Regional Plan Transportation Element. In addition to goals and policies, the RTP also includes a detailed transportation improvement strategy, predicated on received or forecasted funding. The bi-state Tahoe Transportation District, implements projects and operates transit services throughout the Tahoe Region. Learn more about this partnership at www.linkingtahoe.com/about-us/. Table 2.16-1 provides an overview of the local and regional transportation and circulation standards in the Project Area. ® SIERRA E0 86 TABLE 2.16-1 LOCAL AND REGIONAL TRANSPORTATION AND CIRCULATION STANDARDS Plan/Policy Standard/Criteria 2020 Linking The Regional Transportation Plan (RTP) focuses on 4 areas: transit, technology, trails, and Tahoe: Regional communities and corridors. The vision of the Plan is that Tahoe's transportation system is Transportation interconnected, inter -regional, and sustainable, connecting people and places in ways that Plan reduce reliance on cars. The goals and policies of the 2020 RTP are identical to those in the Regional Plan Transportation Element. TRPA Regional Goal 4 Operations and Congestion Management: Provide an efficient transportation network Plan through coordinated operations, system management, technology, monitoring, and targeted Transportation investments. Element Policy 4.6 establishes level of service (LOS) criteria for various roadway categories and signalized intersections during peak periods as follows: -LOS C on rural recreational/scenic roads; - LOS D on rural developed area roads; - LOS D on urban developed area roads; - LOS D for signalized intersections; - LOS E may be acceptable during peak periods in urban areas, not to exceed four hours/ day. There is no LOS for intersections with no signals. El Dorado County The General Plan states that LOS for County -maintained roads and state highways within the General Plan unincorporated areas of the county shall not be worse than LOS E in the Community Regions or LOS D in the Rural Centers and Rural Regions. SOURCE: SIERRA ECOTONE SOLUTIONS 2021 2.16.13 Checklist CEQA Environmental Issues Potentially Significant Impact Less Than Significant With Mitigation Less Than Significant Impact No Impact Would the project: A) Conflict with an applicable plan, ordinance or policy establishing measures of effectiveness for the performance of the circulation system, taking into account all modes of transportation including mass transit and non- ❑ ❑ ❑ motorized travel and relevant components of the circulation system, including but not limited to intersections, streets, highways and freeways, pedestrian and bicycle paths, and mass transit? E,7 Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact B) Conflict with an applicable congestion management program, including, but not limited to level of service standards and travel demand measures, or other ❑ ❑ ❑ standards established by the county congestion management agency for designated roads or highways? C) Result in a change in air traffic patterns, including either an increase in traffic levels or a change in location that ❑ ❑ ❑ results in substantial safety risks? D) Substantially increase hazards due to a design feature (e.g., sharp curves or dangerous intersections) or ❑ ❑ ❑ incompatible uses (e.g., farm equipment)? E) Result in inadequate emergency access? ❑ ❑ ❑ F) Conflict with adopted policies, plans, or programs regarding public transit, bicycle, or pedestrian facilities, or ❑ ❑ ❑ otherwise decrease the performance or safety of such facilities? 2.16.0 Discussion A) No Impact Since Project activities would occur within the ROW of Pioneer Trail and primarily be contained underground, the Project would not have an impact on the effectiveness or performance of the circulation system in the Project Area. Therefore, the Project would not conflict with applicable plans, ordinances, or policies related to the operation of the transportation system or mass transit including the TRPA 2020 Regional Transportation Plan or the Transportation Element of the Regional Plan. B) No Impact The proposed Project will not conflict with a congestion management program. The Traffic Control Plan outlined in Section 1.3.H will include signage advising road users of road work. Flaggers will be stationed when lane closures are necessary. Minor delays (5 minutes wait time maximum) on Pioneer Trail or minor residential streets may occur when the Traffic Control Plan determines lane closures are necessary. Traffic control devices will be removed when active work is not occurring. Temporary delays on roadways within the Project Area will not result in permanent or long-term impacts to level of service standards or have an impact on congestion on local or regional roads or highways. The ® SIERRA ECI 88 Project will not result in any increase in travel demand. Therefore, the Project will have no impact. Q No Impact The Project will not have an effect on air traffic patterns or result in the increase in air traffic levels or have any impact on the Lake Tahoe Airport (KTVL) located west of the Project Area Therefore, the project will have no impact. D) No Impact The design of the Project would not result in permanent physical alterations of Pioneer Trail or incompatible use of the roadway that would create additional hazards within the Project Area Therefore, the Project will have no impact. E) No Impact During Project construction, local traffic and emergency response vehicles will be allowed to pass though at all times. Therefore, adequate emergency access will be maintained during construction. Long-term operations of the Project would result in no impact to emergency access and response. F) No Impact The Project Activities are limited to the ROW and underground facilities. The Project will not conflict with any of the pedestrian, bicycle or public transit policies outlined in the 2020 Regional Traffic Plan or have any negative impact on the performance of any of the existing or proposed programs of the Plan. 2.17 UTILITIES & SERVICE SYSTEMS 2.17.A Environmental and Regulatory Settings Public utilities and service systems include the water distribution system, sewer services, waste water collection and treatment system water, and solid waste disposal. Within the Project Area, the South Tahoe Public Utility District (District) owns and operates the water distribution system and the waste water collection and treatment system within its Service Area. Solid waste collection, recycling and disposal is carried out by South Tahoe Refuse and Recycling. Solid waste is transported to landfill sites in Nevada. Electrical power is supplied by Liberty Utilities and natural gas by Southwest Gas. Relevant regulation of public utilities includes the following: • As described in Section 1.4, the District has an MOU with TRPA for Public Works Providers that allows for repair and maintenance of underground facilities without TRPA's review (TRPA 2012). ® SIERRA ECOTONE SOLUTIONS 89 • The District must comply with General Waste Discharge Requirements specified by the Regional Water Quality Control Board and the Water Quality Control Plan for the Lahontan Region (Basin Plan). • The Lahontan Regional Water Quality Control Tahoe General Construction Permit (Board Order R6T-2016-0010) regulates discharges of pollutants in storm water associated with construction activity (storm water discharges). and requires an approved NPDES Storm Water Management Plan. • The South Lake Tahoe Basin Waste Management Authority is a Joint Powers Authority (JPA) consisting of three (3) jurisdictions; City of South Lake Tahoe, El Dorado County and Douglas County. The South Lake Tahoe Basin Waste Management JPA was created to encourage construction of a materials recovery facility and other solid waste handling facilities in the Tahoe Basin. The City of South Lake Tahoe General Plan contains the following policies that are applicable to water supply and services: • Policy PQP-2.2 Coordination with Urban Water Management Plan. The City should coordinate with and support the planning efforts of the South Tahoe Public Utility District (District), including all measures contained in the Urban Water Management Plan. • Policy PQP-2.4 Sustainable Water Use. The City shall encourage efficient practices that ensure water is used in a sustainable manner. • Policy PQP-2.5 Sustainable Water Distribution. The City shall support local water supply agencies in upgrading public water systems, as needed, to ensure efficient and sustainable water distribution. • Policy PQP-2.7 Water and Wastewater Management Strategy. The City shall support water and wastewater agencies in developing an innovative water and wastewater management strategy that considers water supply and treatment systems. 2.17.13 Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Would the project: A) Exceed wastewater treatment requirements of the ❑ ❑ ❑ applicable Regional Water Quality Control Board? ® SIERRA ECI 9u Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact B) Require or result in the construction of new water or wastewater treatment facilities or expansion of existing ❑ ❑ ❑ facilities, the construction of which could cause significant environmental effects? C) Require or result in the construction of new storm water drainage facilities or expansion of existing facilities, the ❑ ❑ ❑ construction of which could cause significant environmental effects? D) Have sufficient water supplies available to serve the Project from existing entitlements and resources, or are ❑ ❑ ❑ new or expanded entitlements needed? E) Result in a determination by the wastewater treatment provider, which serves or may serve the Project that it has ❑ ❑ ❑ adequate capability to serve the project's projected demand in addition to the provider's existing commitments? F) Be served by a landfill with sufficient permitted capability ❑ ❑ ❑ to accommodate the project's solid waste disposal needs? G) Comply with federal, state, and local statutes and ❑ ❑ ❑ regulations related to solid waste? 2.17.0 Discussion A) No Impact The District must comply with General Waste Discharge Requirements specified by the Regional Water Quality Control Board and the Water Quality Control Plan for the Lahontan Region (Basin Plan). A project that would cause Lahontan regional wastewater treatment requirements to be exceeded would constitute a significant impact. The Project includes the installation of new waterlines and connections, but no additional connections to the existing municipal wastewater treatment plant are proposed. Therefore, the Project will not result in the generation of wastewater or the exceedance of waste water treatment requirements. Therefore, the Project will have no impact. B) No Impact A project that would result in adverse environmental effects from the construction of new water or wastewater treatment facilities or expansion of existing facilities that would be necessary to serve and increase capacity would constitute a significant impact. 91 The Project includes the installation of new water pipelines and fire hydrants that would expand existing water facilities in order to increase capacity for fire protection. The Project components are primarily located underground and the temporary disturbances related to construction would result in no adverse environmental effect. Q No Impact A project that would necessitate construction of new storm water drainage facilities or the expansion of existing facilities would constitute a significant impact on public services and utilities. Project construction is temporary and limited in area to the Pioneer Trail ROW and would generate little to no storm water. Therefore, the Project would not necessitate the expansion or construction of new storm water drainage facilities and would have no impact to this public utility. D) No Impact A project would have a significant effect on public services and utilities if it would result in the need to expand existing entitlements or establish new water rights to meet increased water supply demands. The installation of new water pipelines and fire hydrants would expand existing water facilities in order to increase capacity for fire protection. This small expansion of the water system infrastructure is also critical for service redundancy and reliability and is well within the capacity of the existing water supply. Therefore, the Project would not result in the need for new or expanded water entitlements and would have no impact. E) No Impact A project would result in a significant impact if the District's wastewater treatment capacity would be exceeded. The District is the wastewater treatment provider for the Project Area. The Project does not propose new sewer lines or new connections to the existing municipal wastewater treatment plant. Therefore, the Project will not generate additional wastewater or exceed the District's wastewater treatment capacity and will result in no impact. F) No Impact A project that creates solid waste at volumes that would cause exceedance of the permitted capacity of a regional landfill would constitute a significant impact. Project construction is expected to generate minimal solid waste. Old water lines will be abandoned in place and excess material from the project will be removed from the site and disposed of at a site approved by the TRPA. The small volume of waste that would be generated is not expected to cause exceedance of the permitted capacity of a regional landfill. Therefore, the Project would have no impact. SIERRA ECOTONE SOUITIONS 92 G) No Impact A project that would result in non-compliance with state, federal, regional and local policies related to solid waste would constitute a significant impact. The District's contractor would be required to comply with State, federal, regional and local policies related to solid waste. Therefore, the Project would have no impact. 2.18 MANDATORY FINDINGS OF SIGNIFICANCE 2.18.A Checklist Less Than Potentially Significant Less Than Significant With Significant CEQA Environmental Issues Impact Mitigation Impact No Impact Does the project: a) Have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or ❑ ❑ ❑ animal community, reduce the number or restrict the range of a rare or endangered plant or animal, or eliminate important examples of the major periods of California history or prehistory? b) Have impacts that are individually limited, but cumulatively considerable? ("Cumulatively considerable" means that the incremental effects of a Project are considerable when viewed ❑ ❑ ❑ in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.) c) Have environmental effects, which will cause substantial ❑ ❑ ❑ adverse effects on human beings, either directly or indirectly? 2.18.113 Discussion A) No Impact The Project is very small scale and of short duration and the construction impacts are temporary and limited to the existing ROW. The Project will not substantially degrade the quality of the environment. The Project proposal does not have the potential to degrade the quality of the environment substantially; reduce the habitat of fish or wildlife species; cause a fish or wildlife population to drop below self-sustaining levels; threaten to eliminate 93 a plant or animal community; reduce the number or restrict the range of a rare or endangered plant or animal; or eliminate important examples of the major periods of California history or prehistory. B) No Impact The Project will not result in impacts that are individually limited but would be cumulatively considerable when viewed in connection with the effects of past projects, the effects of other current projects and the effects of probable future projects in the vicinity of the project site. Other projects may occur in City of South Lake Tahoe and El Dorado County; however, impacts would not be cumulatively considerable when evaluated in the context of the proposed Project's negligible environmental effects and the short duration of construction activities within the ROW. C) No Impact The Project will not result in environmental effects, that will cause substantial adverse direct or indirect effects on human beings. The Project will result in benefits to humans through the conservation of water resources, reduced energy consumption, hazard mitigation, and improved water supply for firefighting and suppression. ® SIERRA ECI 94 CEQA Determination On the basis of the evaluation presented in this document, the South Tahoe Public Utility District concludes that: The proposed project is exempt from CEQA pursuant to the general exemption, a statutory exemption, and/or a categorical exemption. If the project is categorically exempt, none of the exceptions to the exemption apply. A NOTICE OF EXEMPTION will be prepared. On the basis of the Initial Study, there is no substantial evidence that the X project will have a significant effect on the environment. A NEGATIVE DECLARATION will be prepared. On the basis of the Initial Study and implementation of all proposed mitigation measures, there is no substantial evidence that the project as mitigated may have a significant effect on the environment. A MITIGATED NEGATIVE DECLARATION will be prepared. There is substantial evidence that the project may result in a significant environmental impact. An ENVIRONMENTAL IMPACT REPORT will be prepared. ® SIERRA ECOTONE SOLUTIONS 95 Garth Alling — Principal, Sierra Ecotone Solutions LLC Alison E Stanton — Sierra Ecotone Solutions LLC Aaron Souza — 3dfx Design Adrian Combes — South Tahoe Public Utility District SIERRA ECOTONE SOLLRIONS 96 Ascent Environmental. 2020. City of South Lake Tahoe Climate Action Plan. California Department of Fish and Game. 1980. At the crossroads: a report on the status of California's endangered and rare fish and wildlife. Sacramento. 149pp. California Department of Fish and Wildlife (CDFW). 2022. California Natural Diversity Database (CNDDB), 2022. https://www.dfg.ca.gov/biogeodata/cnddb/mapsanddata.asp City of South Lake Tahoe. 2019. Community -Wide & Government Operations Greenhouse Gas Emissions Inventories for 2015. CNPS, Rare Plant Program. 2022. Inventory of Rare and Endangered Plants (online edition, v9-011.5). California Native Plant Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed 15 Mar 2022]. Holland, R. 1986. Preliminary descriptions of the terrestrial natural communities of California. Unpublished document, California Department of Fish and Game, Natural Heritage Division. Sacramento, CA. Lindstrom, Susan. 2020. South Tahoe Public Utility District Water and Sewer Replacement Project Cultural Resource Study *Confidential*. 80pp. Lindstrom, Susan. 2021. South Tahoe Public Utility District Water Line Replacement Project 2021 (Pioneer Trail/Bijou/Herbert-Walkup Areas) Cultural Resource Inventory *Confidential*. 81 pp. Sacramento Air Quality Management District. 2016. Road Construction Emissions Model,. Version 8.1.0, June 2016. Website www.airquality.org/ceqa Sierra Ecotone Solutions LLC. 2021. District Wide Right -of -Way Water and Sewer Facilities Upgrade Project. Initial Study, September 2021. 105p. South Tahoe Public Utility District. 2015. STPUD 2015 Public Water Systems Statistics Annual Report. Unpublished Document. Tahoe Regional Planning Agency. 2012. Threshold Evaluation Report. http://www.trpa.org/regional-plan/threshold-evaluation/ Tahoe Metropolitan Planning Organization. 2010. Lake Tahoe Region Bicycle and Pedestrian Plan 96pages. http://www.trpa.org/wp- content/uploads/plans/2010%20Lake%2OTahoe%20Region%20Bicycle%20and%20Ped estrian%20PIan%20FULL%20DOC.pdf Tahoe Metropolitan Planning Organization. 2012. Regional Transportation Plan, Mobility 2035. Website: http://tahoempo.org/Mobility2035/ US Environmental Protection Agency. 2016. Fuel Economy. Office of Transportation & Air Quality. Website https://www.fueIeconomy.gov/ [accessed June 21, 2016] Zeiner, D. C., W. F. Laudenslayer Jr., and K. E. Mayer (editors). 1988. California's Wildlife. Resources Agency, Dept., Sacramento, California. ® SIERRA ECOTONE SOLUTIONS 97 ® SERRA ECOTONE SOLUTIONS 98 Appendix A: Relevant Plan and Specification Sheets SIERRA ECOTONE SOUITIONS DIRECTORS CENERAL MANAGER JOHN THIEL, P.E. GRAPHIC SCALE 500 0 100 500 1000 1 inch =500 ft. ixoo US FOREST SERVICE APN 080-010-012-000 MONTGOMERY ESTATES UNIT #9 HOMES APN 080-191-001-000 I GOLDEN BEAR TRAIL CALIFORNIA TAHOE CONSERVANCY APN 080-010-015-000 CITY OF SOUTH LAKE TAHOE APN 080-010-013-000 i �l I =I I CoI I� 'I ' Z CO Lu Iz I US FOREST SERVICE ' p ' APN 080-030-002-000 14 I �z 111112813011 US FOREST SERVICE APN 080-050-002-000 KOKANEE TRAIL MONTGOMERY ESTATES UNIT #9 HOMES APN 080-192-029-000 US FOREST SERVICE APN 080-030-002-000 VICINITY HAP SHEET TITLE G1 COVER G2 GENERAL NOTES G3 STAGING AREA P1 PLAN SHEET - STA 0+00 TO 10+00 P2 PLAN SHEET - STA 10+00 TO 20+00 P3 PLAN SHEET - STA 20+00 TO 30+00 P4 PLAN SHEET - STA 30+00 TO 40+00 P5 PLAN SHEET - STA 40+00 TO 50+00 P6 PLAN SHEET - STA 50+00 TO 60+00 P7 PLAN SHEET - STA 60+00 TO 70+00 P8 PLAN SHEET - STA 70+00 TO 80+00 P9 PLAN SHEET - STA 80+00 TO 90+00 D1 DETAILS D2 DETAILS D3 DETAILS GE1 ELECTRICAL LEGEND GE2 ELECTRICAL ABBREVIATIONS GE3 SCHEMATIC SYMBOLS E1 ELECTRICAL & INSTRUMENTATION E2 ELECTRICAL & INSTRUMENTATION me 1 Q Z J W 0 Q) rn Co 42 q to M I DATE: 10-11-2021 F CALE: AS SHOWN RAWN: AZ DESIGN: AC/AZ AS BUILT: Gl 1 OF 22 SHEETS ABBREV AT ONS AB AGGREGATE BASE AC ASPHALT CONCRETE APPX APPROXIMATELY AVE AVENUE C&G CURB AND GUTTER CIF CUBIC FEET CL CENTERLINE CPLG COUPLING CPS COPPER PIPE SIZE CSLT CITY OF SOUTH LAKE TAHOE DI DRAINAGE INLET DIA DIAMETER DIP DUCTILE IRON PIPE DW DRIVE WAY E EXISTING EA EACH ELEC ELEV ELECTRIC ELEVATION ELL ELBOW EOP EDGE OF PAVEMENT FG FINISHED GRADE FH FIRE HYDRANT E FL FLOW LINE N FLG FLANGE FM FORCE MAIN G GAS E GA GAUGE T GALV GALVANIZED GB GRADE BREAK GPM GALLONS PER MINUTE S GS GAS SERVICE, GROUND SHOT H HEIGHT HORZ HO HORIZONTAL, HORIZONTAL E OFFSET E HWY HIGHWAY ID INSIDE DIAMETER IE INVERT ELEVATION T INV INVERT IPS IRON PIPE SIZE JT JOINT S L LENGTH LF LINEAR FEET LN LANE C LOC LOCATION LT LEFT MAX MAXIMUM L MECH MECHANICAL MFR MANUFACTURER MH MANHOLE MJ MECHANICAL JOINT A MIN MINIMUM N NORTH/NEW NA NOT APPLICABLE NIC L NOT IN CONTRACT NO NORMALLY OPEN NTS NOT TO SCALE OC ON CENTER OD OUTSIDE DIAMETER PCC PORTLAND CEMENT CONCRETE PE, POLY POLYETHYLENE PL PROPERTY LINE PP POWER POLE PSF POUNDS PER SQUARE FOOT PSI POUNDS PER SQUARE INCH PTW PIPE TRACER WIRE PVC POLYVINYL CHLORIDE QTY QUANTITY R RADIUS RCP REINFORCED CONCRETE PIPE REF REFERENCE REQ'D REQUIRED REVEG REVEGETATION RJ RESTRAINED JOINT RT RIGHT ROW RIGHT—OF—WAY SCH SCHEDULE SD STORM DRAIN SDMH STORM DRAIN MANHOLE SQ FT SQUARE FOOT SHT SHEET SPEC SPECIFICATIONS SQ SQUARE SS SANITARY SEWER, STAINLESS STEEL SSL SANITARY SEWER LATERAL SSMH SANITARY SEWER MANHOLE ST STREET STA STATION STD STANDARD STL STEEL STPUD SOUTH TAHOE PUBLIC UTILITY DISTRICT STR STRUCTURE TEL TELEPHONE TAN TANGENT TBC TOP BACK CURB TBD TO BE DETERMINED TEMP TEMPORARY TG TOP OF GRATE TR TOP OF RIM TRPA TAHOE REGIONAL PLANNING AGENCY TYP TYPICAL UG UNDERGROUND USFS U.S. FOREST SERVICE UTIL UTILITY V, VO VERTICAL, VERTICAL OFFSET VAR VARIES W WATER W/ WI TH WM WATER METER WS WATER SERVICE WV WATER VALVE YD YARD AGE CY/U T TY QffT2,�I RTE5MRGENCY gLn (916) 859-7900 L D❑RAD❑ COUNTY SHERIFF'S ❑FFICE ON EMERGENCY (530) 573-3000 L D❑RAD❑ COUNTY DEPARTMENT OF RANSP❑RTATI❑N (530) 642-4909 ❑UTH TAHOE PUBLIC UTILITY DISTRICT (530) 544-6474 L D❑RAD❑ COUNTY NVIR❑NMENTAL MANAGEMENT (530) 573-3450 AH❑E REGI❑NAL PLANNING AGENCY (775) 588-4547 ❑UTHWEST GAS (NATURAL GAS) (800) 772-4555 HARTER C❑MMUNICATI❑NS INC. (CABLE TV) (775) 588-1077 IBERTY ENERGY (ELECTRIC) (530) 541-1628 (775) 689-4100 COLLECT TT/SBC (TELEPHONE) 611 (PRESS "0" FOUR TIMES) (800) 310-2355 ❑PTI❑N #2 AKE VALLEY FIRE PR❑TECTI❑N DISTRICT (530) 577-3737 8� Rnow. wharsbClOW. Call before You dig. LEGEND EXISTING: EDGE OF PAVEMENT SEWER FORCE MAIN: SEWER: WATER: GAS: OVERHEAD UTILITY: TELEPHONE: CABLE TV STORM DRAIN: PROPERTY LINE: RIGHT—OF—WAY: WATER & GAS VALVE: WATER METER PIT: FIRE HYDRANT: MANHOLE: UTILITY VAULT: DROP INLET: SIGN: LIGHT: TREE: PROPOSED: WATER MAIN LINE: SVC & FH LINES: 90° ELBOW: 45° ELBOW: TEE: CROSS: REDUCER: WATER VALVE: FIRE HYDRANT: THRUST BLOCK: BLOW OFF: FLEX COUPLING: WATER SERVICE & METER PIT: DOUBLE WATER SERVICE & 2 METER PITS: EOP EOP 16" STEEL FM SS SS W W GAS GAS OHU OHU TEL TEL CATV CATV SD SD -R/W 0 O 0 R/W GENERAL NOTES 1) CONTRACTOR SHALL HAVE SIGNED PLANS, SPECIFICATION AND PERMITS IN THEIR POSSESSION PRIOR TO COMMENCEMENT OF WORK. 2) THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING ALL UTILITY COMPANIES, LOCAL AGENCIES AND/OR UTILITY DISTRICTS AS TO THE LOCATION OF ALL UNDERGROUND FACILITIES. LOCATION AND DEPTH OF EXISTING UTILITIES WHERE SHOWN ON PLANS ARE BASED ON BEST AVAILABLE INFORMATION. NO GUARANTEE IS MADE AS TO THE ACCURACY OF THIS INFORMATION OR THAT ALL UTILITIES ARE SHOWN. IT SHALL BE THE CONTRACTORS RESPONSIBILITY TO LOCATE, PROTECT, AND MAINTAIN ALL EXISTING UTILITIES. THE CONTRACTOR OR ANY SUBCONTRACTOR FOR THIS CONTRACTOR SHALL NOTIFY MEMBERS OF UNDERGROUND SERVICE ALERT 48 HOURS IN ADVANCE OF PERFORMING EXCAVATION WORK BY CALLING UNDERGROUND SERVICE ALERT 811. EXCAVATION IS DEFINED AS BEING 18 OR MORE INCHES OF DEPTH BELOW THE EXISTING SURFACE. 3) THE CONTRACTOR SHALL POTHOLE ALL UTILITY AND STORM DRAIN CROSSINGS ALONG THE PIPELINE ALIGNMENT IN ADVANCE OF INSTALLATION. THE CONTRACTOR SHALL REPORT THE RESULTS OF THE POTHOLE IN WRITING TO THE Ef WEEKENDS OR HOLIDAYS) PRIOR TO UNDERTAKING CONTRACTOR REGARDING FACILITY LOCATION OR A[ NOTIFY THE ENGINEER. SHOULD ANY CORRECTIVE NOTIFICATION, THE DISTRICT ASSUMES NO LIABILITY WORK. 4) CONTRACTOR TO BE RESPONSIBLE FOR THE PROTI AND ANY OTHER SURVEY MARKERS DURING CONS MARKERS DISTURBED OR DESTROYED DURING CON CALIFORNIA LICENSED SURVEYOR AT CONTRACTOR'`. 5) THE CONTRACTOR SHALL APPLY EITHER WATER OR REQUIRED AT THE OPTION OF THE OWNER OR HIS ALLEVIATION OR PREVENTION OF DUST NUISANCE. 6) THE CONTRACTOR SHALL COMPLY WITH THE TAHOE STANDARD CONDITIONS OF APPROVAL. A PRE—GRAI PRIOR TO ANY SAWCUTTING OR EXCAVATION ACTIVI 7) THE CONTRACTOR SHALL COMPLY WITH THE STATE WASTE DISCHARGE REQUIREMENTS FOR THIS PROJ TAHOE'S ENCROACHMENT PERMIT. 8) ALL AREAS DISTURBED BY CONSTRUCTION VITY S LL BE REVEGETATED BY THE CONTRACTOR IN ACCORDANCE WITVN TAH AL PLANNING AGENCY HANDBOOK OF BEST MANAGEMENT PRACTICES.ON A MULCH MAY ENHANCE VEGETATIVE ESTABLISHMENT. NO EQUIPMENT OR ALL BE PLACED OUTSIDE THE STATE, CITY, OR COUNTY RIGHT OF TUR ANCE OF PRIVATE PROPERTY SHALL BE RESTORED BY THE CONTR T EXPENSE. 9) ALL EXCESS MATERIAL DISPOSED OF AT A TE 74 EXCESS MATERIA ALL B CT IS TO BE REMOVED FROM THE SITE AND VED 137 THE TAHOE REGIONAL PLANNING AGENCY. NO ORED ON SITE AFTER HOURS. 10) ALL INTERTIES W NE WATER MAINS AND THE EXISTING WATER SYSTEM, INCLUDING NEW WATER4kLR CON IONS, AND FIRE HYDRANT INSTALLATIONS AND TRANSFERS, ILL MADE AFTER ALL PRESSURE TESTING AND DISINFECTION REQUI ENTS FACTORILY MET. THE CONTRACTOR SHALL BE RESPONSIBLE TO PROV FFS NECESSARY FOR FLUSHING AND SAMPLING OF ALL NEW WATER MIS EQ BY THE CALIFORNIA STATE WATER RESOURCES CONTROL BOARD AND JECT CIFICATIONS. NE V7ATER MAINS ARE BEING INSTALLED IN PAVED SECTIONS THE MAXIMUM VH F ASPHALT REPLACEMENT THE CONTRACTOR SHALL BE COMPENSATED FOR IS M UM CLEAR TRENCH WIDTH FOR THE PIPELINE SIZE BEING INSTALLED PLUS V INCHES (12") IN COUNTY OF EL DORADO RIGHT OF WAY, TWENTY FOUR INCHES ) IN CITY OF SOUTH LAKE TAHOE RIGHT OF WAY, AS PROVIDED IN THE CONTRACT ECIFICATIONS. THE CONTRACTOR SHALL REPLACE ALL TRAFFIC STRIPING THAT IS STURBED DURING CONSTRUCTION. 12) ALL EXCAVATIONS SHALL BE BACKFILLED OR TRENCH PLATED AT THE END OF EACH DAY'S WORK PER THE SPECIFICATIONS. EXCAVATIONS WITHIN EXISTING PAVED AREAS SHALL BE HOT PATCHED AS REQUIRED PER SPECIFICATIONS TO MATCH THE EXISTING PAVEMENT AT THE END OF EACH DAY'S WORK. ALL TRENCH PLATES SHALL BE NON—SKID TYPE AND HAVE COLD PATCH APPLIED TO THE EDGE FOR TRAFFIC APPROACH AND DEPARTURE. 13) THE CONTRACTOR SHALL PROVIDE, ON ALL NON—CONDUCTIVE PIPING, CONTINUOUS INSULATED TRACER WIRE RATED FOR DIRECT BURY (#10 SOLID COPPER OR #12 COPPER CLAD STEEL WIRE ALONG THE PIPELINE AND PROVIDE ACCESS TO TRACER WIRE AT ALL VALVE BOX INSTALLATIONS WITH A MINIMUM OF 1 FT EXCESS TRACER WIRE FOR FUTURE SERVICE CONNECTIONS. THIS SHALL ALSO APPLY TO ALL CONDUCTIVE PIPING UNLESS PERMANENTLY BONDED AT EACH JOINT. ALL TRACER WIRE CONNECTIONS SHALL BE MADE USING 3M DBR-6 SPLICE KIT OR APPROVED EQUAL. 14) THE CONTRACTOR SHALL PROTECT AND BE RESPONSIBLE FOR ANY DISTURBANCE OR CONTAMINATION TO ANY DRY WELLS, STORM WATER COLLECTION OR RETAINAGE SYSTEMS INCLUDING STORM DRAIN PIPE, CURB & GUTTER, VALLEY GUTTERS AND HORIZONTAL DRAINS THROUGH OUT THE PROJECT AREA. ANY DAMAGE SHALL BE REPAIRED AT NO ADDITIONAL COST TO DISTRICT. THE CONTRACTOR SHALL NOT STOCK PILE ANY MATERIAL UPON ANY ftk DRAINAGE FACILITIES. PRIOR TO CONSTRUCTION ACTIVITY THE CONTRACTOR SHALL SUBMIT TO THE DISTRICT FOR ACCEPTANCE A PROJECT SPECIFIC TRAFFIC CONTROL PLAN. CONTRACTOR SHALL MAINTAIN THE CONTINUOUS FLOW OF TRAFFIC AT ALL TIMES DURING CONSTRUCTION ACTIVITY. AFTER WORKING HOURS ALL TRAFFIC BARRIERS SHALL BE REMOVED AND TRAFFIC RETURNED TO NORMAL. CONTRACTOR SHALL REMOVE ALL MATERIAL GENERATED BY ANY ASPHALT SAW CUTTING OPERATION DURING OR IMMEDIATELY AFTER SAWCUTTING BY USING ADEQUATELY SIZED VACUUMING EQUIPMENT TO ACCOMMODATE THE REMOVAL PROCESS. WHEN HOT TAPPING A WATER MAIN: CONTRACTOR SHALL EXCAVATE, SHORE AND SHIEL EXISTING WATER MAIN. CONTRACTOR SHALL PRESSURE TEST, SADDLE AND GATE VALVE P TO HOT TAP. CONTRACTOR SHALL PROVIDE ACCESS AND TRAFFIC CONTROL FOR DISTRI� CREWS TO HOT TAP WATER MAIN. ALL HOT TAPS SHALL BE DONE TUESDAYS THRU THURSDAYS. CONTRACTOR SHALL REQUEST IN WRITING FORTY EIGHT (48) HOURS IN ADVANCED FOR DISTRICT CREWS TO PERFORM HOT TAP. 1 z7) CONTRACTORS EQUIPMENT AND EMPLOYEE VEHICLES SHALL PARK ON EXISTING PAVED SURFACES OR EXISTING COMPACTED ROAD SHOULDERS. NO EQUIPMENT OR VEHICLES S BE PLACED OUTSIDE THE STATE, CITY, OR COUNTY RIGHT OF WAY. ANY DISTURBANCE OF PRIVATE PROPERTY SHALL BE RESTORED BY THE CONTRACTOR AT THEIR EXPENSE. 20) ALL SEWER PIPES DAMAGED DURING THE EXECUTION OF THE PROJECT SHALL BE REPA PER DETAILS. 21) AFTER THE NEW MAIN IS PLACED INTO SERVICE, THE EXISTING WATER MAINS, WHERE S ON THE PROJECT DRAWINGS, ARE TO BE ABANDONED IN PLACE BY CUTTING OUT A SECTION OF PIPE AND WELDING A CAP ON THE END OF THE PIPELINE, OR OTHER APPROVED METHOD OF CAPPING. BLIND —FLANGE CAPPING SHALL BE UTILIZED WHERE POSSIBLE. ALL EXPOSED CORPORATION STOPS ON THE EXISTING WATER MAINS ARE TO BE LEFT IN PLACE IN THE CLOSED POSITION. FOR CORPORATION STOPS THAT HAVE NOT BEEN EXPOSED, THE CAPPING OF THE END OF THE SERVICE LINE USING AN APPROVED COMPRESSION FITTING SHALL d&.. ACCEPTABLE. EXISTING FIRE HYDRANTS TO BE ABANDONED AT THE ISOLATION VALVE, RE D FROM THE PROJECT AREA AND RETURNED TO THE DISTRICT, BY THE CONTRACTOR. THE ISOLATION VALVE IS TO BE BLIND FLANGED OR CAPPED BY OTHER APPROVED METHOD. 22) ALL EXISTING WATER SERVICES FOR THIS PROJECT SHALL BE ABANDONED PER NOTE # . ONLY NEW WATER SERVICE CONNECTIONS WHERE SHOWN ON THE PROJECT PLANS SHA B INSTALLED PER THE DISTRICTS STANDARD DETAILS AND PROJECT DRAWINGS. THE LOCATI OF ALL EXISTING WATER SERVICES SHALL BE VERIFIED AND MARKED IN THE FIELD. 23) THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE HANDLING AND PROPER DISPOSAL DISTRIBUTION SYSTEM WATER ENCOUNTERED DURING SYSTEM TIE—INS IN ACCORDANCE THE SPECIFICATIONS. FOR THIS PROJECT, THE CONTRACTOR SHALL ASSUME THAT UP T 1,250 GALLONS WILL BE ENCOUNTERED AT EACH TIE—IN. H O z I Q Z J W U 0 ��Q N J � m q W D M w � V W W � � z ~z�w ww z � w w � o � a DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: G2 2 OF 22 SHEETS DIRECTIONS: FROM HIGHWAY 50/LAKE TAHOE BLVD OR PIONEER TRAM, TAKE AL TAHOE BLVD TO THE NORTH GATE ACCESS ROAD 0Y CITY OF SOUTH LAKE TAHOE PLAY FIELDS SIGN �g F PLAY FIELDS PARKING LOT ACCESS: MAX SPEED LIMIT 15 MPH, EXERCISE EXTREME CAUTION DISTRICT'S NORTH GATE LOCKED VERTICAL LIFT GATE MAXIMUM HEIGHT 14 FEET MAINTAIN FULL WIDTH 24 HOUR OPERATION ACCESS LOOP FOR DISTRICT CONTRACTOR STAGING AREA FOR EQUIPMENT, WATERLINE REPLACEMENT MATERIAL AGGREGATE BASE NO DEBRIS, EXCESS SPOIL TO BE STORED HERE NOTE: 1) CONTRACTOR SHALL PROVIDE TEMPORARY SANITARY CONVENIENCES AT ALL STAGING AREAS PER STPUD SPECS BM P GENERAL NOTES: 1) ON —SITE WORK SHALL BE PERFORMED FROM 8 AM TO 6 PM, MONDAY THROUGH FRIDAY. WORK OUTSIDE THESE HOURS MUST BE APPROVED BY THE DISTRICT A MINIMUM OF 48—HOURS BEFORE THE ABNORMAL WORKING HOURS ARE SCHEDULED TO BEGIN. 0 2) NOISE SHALL BE REDUCED BY MANDATORY USE OF MUFFLERS ON ALL CONSTRUCTION VEHICLES AND u EQUIPMENT. WHERE FEASIBLE, SOLENOID PAVEMENT BREAKERS WILL BE USED IN LIEU OF AIR �. POWERED JACK HAMMERS. o co Q w�� 3) NOISE GENERATING ACTIVITIES WILL BE LIMITED TO THE HOURS OF 8:00 AM TO 6:00 PM. 4) THE CONTRACTOR SHALL PROVIDE A WATER TRUCK TO WATER AREAS AS NECESSARY TO CONTROL m DUST. 4 W 5) CONTRACTOR SHALL PROVIDE A VACUUM SWEEPER TRUCK FOR CLEANING OF THE SITE DURING AND AFTER CONSTRUCTION EACH DAY AS REQUIRED TO PREVENT SEDIMENT RUN OFF AND TO AID IN Q DUST CONTROL. D ^�M 6) CONTRACTOR SHALL PROVIDE CRUSHED ROCK IN AREAS OF TEMPORARY CONSTRUCTION ACCESS TO MINIMIZE MIGRATION OF SEDIMENT. z 7) ALL DISTURBED AREAS SHALL BE RESTORED TO MATCH PRE-EXISTING CONDITIONS. UNIMPROVED j►i, AREAS AND AREAS NOT LANDSCAPED SHALL BE REVEGETATED WITH NATIVE SPECIES PER TRPA BEST MANAGEMENT PRACTICES (BMP). EXISTING VEGETATION REMOVED DURING CONSTRUCTION SHAL BE CHIPPED AND MULCHED ON SITE AND STORED FOR USE DURING REVEGETATION. 8) ALL TREES IN JEOPARDY OF DAMAGE BY CONSTRUCTION ACTIVITIES AS DETERMINED BY THE DISTRICT SHALL BE PROTECTED PER DETAIL 6 ON PAGE D4. 9) SOIL AND CONSTRUCTION MATERIAL SHALL NOT BE TRACKED OFF THE CONSTRUCTION SITE. GRADING O� OPERATIONS SHALL CEASE IN THE EVENT THAT DANGER OF VIOLATING THIS CONDITION EXISTS. W 10 DURING CONSTRUCTION9 ENVIRONMENTAL PROTECTION DEVICES, SUCH AS EROSION CONTROL, DUST Cn U CONTROL AND VEGETATION PROTECTION DEVICES SHALL BE MAINTAINED AT ALL TIMES. W z � � 11) LOOSE SOIL MOUNDS OR SURFACES SHALL BE PROTECTED FROM WIND OR WATER EROSION BY BEIN W APPROPRIATELY COVERED AT THE END OF EACH WORK DAY OR WHEN REQUIRED BY TRPA. �' W 12) EXCAVATED MATERIAL SHALL BE STORED UPGRADE FROM THE EXCAVATED AREA WHENEVER un POSSIBLE. NO MATERIAL SHALL BE STORED IN ANY STREAM ENVIRONMENT ZONE (SEZ) OR WET AREA. W 13) ONLY EQUIPMENT OF A SIZE AND TYPE THAT WILL DO THE LEAST AMOUNT OF DAMAGE, UNDER0 C� PREVAILING SITE CONDITIONS AND CONSIDERING THE NATURE OF THE WORK TO BE PERFORMED, WIL C-' W < r BE USED. � % W Q 14) NO WASHING OF VEHICLES OR HEAVY EQUIPMENT, INCLUDING CEMENT MIXERS, SHALL BE PERMITTED W r-4 ANYWHERE ON THE SUBJECT PROPERTY UNLESS AUTHORIZED BY TRPA IN WRITING. 0 1 Q Z DATE: 10-11-2021 r� SCALE: AS SHOWN DRAWN: AZ WDESIGN: AC/AZ AS BUILT: G3 3 OF 22 SHEETS L___2062 SUSQUEHANA DR.- 18P ,�VI I \\\ m'� \ \ - - - J i //' \ I 1 / ) \ \ \ I\ ` > I I I I I I I I I I I l /l / / / / I / / / / ) I \ \ \ \ \ \ \ \\ \ ��\\\� �`� \�` \ \ \ 1 I26P \ \\� \ \ ry W \ /U.S/ l FOREST / / / /SERVlI IClE/I \ \\ \ \\q&8'STEEL -050-014-000WATER MAIN —U.S.0 FOREST SERVICE APN 080-050�014-000 APN 080 R M P ET IL\ \ 36P® m (^^�I ///\� \\ \ \ \• a2,A ( 1 I NADR\. /\_--- —/�—_---_ A - 6—-------2073 SUSQUEHAI II cn�/"�/ / / 2070 SUSQUEHANA DR. i \ v\ \\ \\ \ \ 11I \ I \\ \ \ \\\ II I \ \\\\\ \\ \ \ \ \ \ w / / / ) / \ \ LLI G M� — — Damm CO — "' 0'MM _ / - COMM - _ _ MM ' COMA COMM / ",Co. — Dam CiMM— COMM Comm ' BEGIN ALIGNMENT - WATERLINE `�8P — —_ — — / / / / / / / / / / / / / / / \ 6 \ \ \ \ NORTHING- 92002.45 _ �.0U1VT7 R01Al, TYP st I G�38 35.59 — 18P. I \\ ---------'-- l— — — — — — — — — — — — — — — — — — — — _ i i i U) GA � A �--SAS-- —ram — -- / / GAS i f / � Gi.o O ... _ °y0 _ \ 16" INLIN BUTTERFLY 5 D2 \ \uo \ I 1 p .. ..� i i ■ — — — — — — — — — — oy __ __ -- — — — — + - -----� �_�/ NDWJXikd)- _--- _ — —�— — �r _—_ — _ / ?/ / / / 3 BRA�� •, ` ` � _�v, 7,ul U.S.FOR ESTSERVICE_-- // // /-- / — IIEF CT IPE�T 9iN� —/-- --- _ —/—P_OVIDE" 1C—TJ1�E 1,2 �-- // /� / / // / / / /—/�6p// IjRK/IOV�EXI _ _ _ �E OVE EXILING- / — — / � — — — — _ — _ — — _ / REMOk/�F�41S'fIN� /APN 025-161-002-000 /' / — — — — _ — — — / — — — _ IRON�FP�i D2 / / j /E� / / / / / /'3T ;3+48. __' PREFYDR/�N� -- / // — / /' �/ � / / J ' �RE�/ /-U.S.--- — 6 —�/ / / / _ _F:B OII'L / / APN080-050-014-000 - --��J /9 ----�' //'— ^sTA�3�7-�09-- D2 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. 3M 6450 6445 6430 6425 M• 6405 6400 0+00 SCALE; 1" = 40' 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 Pl.D.0FlL'rr__,-',, SCALE: 1" = 40' (H ) r-8'(v) EXISTING 8" STEEL PROPOSED 8" C900 8" BEND (FLxMJ) 16"x8" REDUCER (FLxFL) 16" BUTTERFLY VALVE (FLxMJ) —TRANSITION COUPLER 3 PER DETAIL D1 w z 8" BEND (MJxMJ) PROPOSED 8" C900 PROPOSED 16" DIP DETAIL SCALE: I" = 5' 6+00 6+50 7+00 7+50 8+00 8+50 GRAPHIC SCALE U) 40 0 20 40 80 7 9+00 9+50 1 inch = 40 ft. me , 6450 6445 6430 6425 6420 ,• l m 1 6405 6400 10+00 I Q Z J W rn Co 42 M 12 W, I w � V w O O o � a � O o � 0 w � a o � `�� DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: Pi 4 OF 22 SHEETS \ \ U.S. FOREST SERVICE \ APN 080-050-014-000 \ \GMM�s 1 1 — \ \ �QMM PF 01PERT� NNV\ P \ _. GA SQ I \ s O I -- 5 16" INLINE BUTTERFLY C D2 VALVE ON HYDRANT TEE 11+00 C� / - -- m Uzi` m' / BC�TEI�TIAL / / STAGING AREA / / , / 6 FIRE HYDRANT STA:11 +75.00 u D2 OFF:17.00'R REMOVE EXISTING TREE U.S. FOREST SERVICE / APN 080-050-014-000 NOTES: 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. 6415 6410 6405 .K 11 6395 r •1 6385 . .1 6375 FIRE HYDRANT 6 STA:11 +70.44 D2 ELEV:6403.39 42" MIN'COVER, TYP D2PROPOSED 16" DI PROVtC E SING 17WATER - SERVICE� ONNECT TO EXISTING MEI ERS (x2y I I I I � / I I 1 1 1121 MCI 0 PROFILE PT Waterline 10+00 to 20+00 I ROPO 110 D2 / POSE 16" DIP 1,2 / D2 O D3 ' \ U.S. FOREST SERVICE , cr APN 080-050-002-000 ,CL_ < „1 GAS lY - GAS \ L O 19+00 i �.(� —•�22P C _4 I �24P PROVIDE 16" DUCTILE � . `too ®2�4 s AA IRON PIPE r � ,, oHu � J► --J oHr� � I 1 � ONE I 1 �BOVE`GROUND 1 PRV STATION #1. D1 /U.S. FOREST SERVICE APN 080-050-002-000/ EXISTING DIRT ROAD. MAINTAIN ACCESS THROUGHOUT CONSTRUCTION. EXISTING 8" STEEL PROPOSED 8" C900 8" BEND (FLxMJ) 8" GATE VALVE (FLxMJ) -TRANSITION COUPLERe PER DETAIL D1 w K z 8" BEND (MJxMJ) PROPOSED 8" C900 PROPOSED 8" C900 DETAIL 1 SCALE: 1" = 5' GRAPHIC SCALE 0 20 40 1 inch = 40 ft. 6415 6410 6405 6395 6390 6385 . .1 6375 DATE: ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■SCALE:SHOWN ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ DESIGN: AC/AZ ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ 1 11 1 1 11 1 11 1 11 1 � 11 � 1 11 1 11 1 11 1 11 1 11 1 1 11 n — — — — — — — — -- = COMM °' c U.S. FOREST SERVICE �_ \ COMM / ^ \ Cn m APN 080-050-002-000 COMM r- 7— / \ '� M6) COMM —COUNTY ROW COMM / I \\ G��5 —1-6"—INLINEB Comm 0 / I-/cU ul \ \ — —� — — D2 VAL DRANT TEE O - - - / / CvmM I ) COMM Q -_ _ / /O�MM/ COMM - � GAS --- ® \ "INLINEBUTTER 5 — --- --- —� _77% / f J GAS ---------- / R4 Q m 1 �A ® ` — / / AL ANT TEE D2 ` _ cns_�;f _fQ com� �o — \ ,� i cns cns / / �� _—e % i — R4 4 q ' -L m -oH m1 ' / OHU t � / 1 1 NOTES: — _ —A _ / A FIRE HYDRANT Rs + �-/ — STA:29+86.00 P . Rs _ D2 Rz \ — — ` \ / OFF:19.00'R —OH(� FIRE HYDRANT 6 D2 Z ,PROPOSED 16" DIP D2 , OFF:15.00'R - Hu OHU // UH oHu oHu J/ / / _moo —d RECT EXISTI G oHU GUARDRAIL AND SIGN / I U.S. FOREST SERVICE/ / / / / / / / / 4J OUT ¢I APN 080-050-002 ,000 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. e Wn 6375 6370 6365 6360 6355 6350 6345 20+00 OHUPLAN , GRAPHIC SCALE SCALE: 1' 40 0 20 40 80 = 40 1 inch = 40 ft. 0 PROFILE Alignment - PT Waterline 20+00 to 30+00 20+50 21+00 21+50 22+00 22+50 23+00 23+50 24+00 24+50 25+00 25+50 26+00 26+50 27+00 27+50 28+00 28+50 29+00 29+50 SCALE: 1" = 40' (H) I" = 8' (V) W-1 =I vi M., I Of 6375 6370 6365 6360 6355 6350 6345 30+00 H O z 1 Q Z r= J W I DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: P3 6 OF 22 SHEETS MO M \ \ COMMA \,� — COMM COMM \ COA�R MM / COMM — — — — — — — `/ ^,� / / GAS �r GAS Z GAGAS S m — — W ' — O u Cn_j / y TT 7 1 m •� / N a \ No I J \ N _ o N� \ J U)'` N �r t T • STAGING AREA N' a0 / / DEFLECT PIPE AT JOINT rn p - - - ` - a� STA:32+30.94- m' \ /JOFF:0.00' / 00 _U.S.FOREST SERVICE ----` \\ \\\ ��----'6 �\ \\ ��----� 350----� --------\ /� APN080-050-002-000 / LO ___�� - PROP�R�I�LINE, TYP - U.S. FOREST SERVICE COUNTY ROW - - - \ - \ - - - _ - APN 080-030-002-000 ui uj / COMM COMM -- \ — — — \ / � COMM \ �Comm \ \ MM \ C+ ui GAS — — — — — — — _ — — — — \ \ ` i/W� GAS GAS _ — — — — GAS cas — — — GAS O � cns ' — — — — — -- P --- — — — -- — �'� •• - -��g �o DEFLEC PIPE INT * > \ O� • • N n \ N � "a �-per — — N � R'Q — — $ ' v � •� \ \ / a D2PROPOSED 16" DIP U.S. FOREST SERVICE _=- ' APN 080-050-002-000 ' EXISTING DIRT ROAD. MAINTAIN ACCESS\ -THROUGHOUT CONSTRUCTION? J - - - - - - r 1 1 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. 6370 6365 6360 6355 6350 6345 6340 6335 30+00 30+50 31+00 31+50 11 Mvj a. �N PROFILE Alignment - PT Waterline 30+00 to 40+00 32+00 32+50 33+00 33+50 34+00 34+50 35+00 35+50 36+00 36+50 [Iola) 81110,10 eS — O -- _ + 16" INLINE BUTTERFLY 5 - 0 VALVE ON HYDRANT TEE D2 ui 49 sP / O , E 6�E£ -lP_E �T SQLNT \ U CPO •/ STA:39+60.05 `FIRE/HYE) ANT / / OFF:0.00' \ / STA:38 2.00 _ / / / C D2 OFF: .00'R U.S. FOREST SERVICE \ \ APN 080-030-002-000 \' GRAPHIC SCALE 40 0 20 40 80 1 inch = 40 ft. 37+00 37+50 38+00 38+50 39+00 39+50 6370 6365 6360 6355 6350 6345 6340 6335 40+00 1 Q Z DATE: 10-11-2021 r� SCALE: AS SHOWN DRAWN: AZ WDESIGN: AC/AZ AS BUILT: P4 7 OF 22 SHEETS 1 °o c O � OMM \ I m \ 1 .� O ' \ \ J - , D\ - \ U.S. FOREST SERVICE mm \ \ \\ \ ��\�\ COMM COMM COUNTY ROW \ / / / \ APN 080-030-002-000 '� GAS —comt GAS _ ———� 'vu ..p \ GAS — — — — _ _ COMM O / / I \ \ \ \ \ \ ,O \\ \�Cl\\- \\ �� \ \ \�C� \,lam \ \ — 1 6' - u O p) COMM —^ /_-635 // / J 1\'�l\�\\\ ?S \O\ \—\V\S�\ \ _ Q O—�s ��\ �\ '� _ _--- ��_'---- �+ // / 1 \ \ \\\>'<,\ \ \\ \�_—`\\ �� \ \ TREES/' (Z \ sbc ��--------- / �— _ —_ Lu cr) r - - _ - -- _-_-- W T 00 ` \ b�\\ �— — --- / "�M \ G Mom\ \\\\�\\ \\\\��\\ M �� _ ''/1 0 42+ �\ sbc \ \ /�� _ � \ \\ \ \\ Nl- \\ \\ \\ \�'� \\ _---_' VV./�J I co M1 --._ _ _ _—__ ----- 43+pp t'/4NFE \ __—___=_—,J —\i 1 \` \\� \\\�—_____ a ETXISTI24P — — J _ — — — — + \ \/ < < As — GAS Q O m' - - - \ Na " - -• _ - - - - - - _ - / 16" INLINE BUTTERFLY 5 \ ' o SI1 THIOUGHO' T N \ aCONSTRUCTIO • _ _ N�° ��` - �'�\ �/ - - / ON HYDRANT TEE` D2 \Lu _ ` / -13 REMOVE EXISTING - - -° � I� C311 TREE �i DEFLECT PIPE ATJOINT 48+00 -1,2 �/ - ----- - STA:43+50.23 ,, PROPOSED 16" DIP __PROTECT EXISTING SIGN THROUGHOUT - -�� i Nam- - / _ = _ \ _ �_= _ �_ z: /' - - CONST TION N� 1��RE HYDf�IT -6 J / - '- -�� - _ _� 11 N-®\ • II �TA:46n65.OQ D2 / � � / � �• � � • /� /� J I • � ° � ' U.S. FOREST SERVICE- OFF:19&_R- _NO�,R •� ,, / / / J / �' - - - - - ' 0 / / APN 080-030-002-000 ' _--- -------lop i i NOTES: ' 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE 2 APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES w PRIOR TO CONSTRUCTION. 0000 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A co �� U MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. PLAN GRAPHIC SCALE W O 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT 40 0 20 40 80 CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING( r�L; 1" = 4D' � � � 1 0 W O CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS MEN SHOWN BY DETAIL 3 OF SHEET D3. 1 inch = 40 ft. E-0 ^ '�^ 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER F0 u J STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF O PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. r � rl E-0 0 � w o F--4 w o PROFILE Alignment - PT Waterline 40+00 to 50+00 > � g � 6360 6360 w C Q+ 6355 6355 0 FIRE 6+ RANT 6350 - �sTA:46+ oo , I I I I _4 _IF-4 6350 (�'+ 6345 6340 6335 6330 6325 6320 6315 40+00 40+50 41+00 41+50 42+00 42+50 43+00 43+50 44+00 44+50 45+00 45+50 P1xDx1x",,)/F1 SCALE: 1" = 40' (H) 1" = 8e (V) 46+00 46+50 47+00 47+50 48+00 48+50 49+00 49+50 6345 6340 6335 6330 6325 6320 6315 50+00 1 Q Z DATE: 10-11-2021 r� SCALE: AS SHOWN JDRAWN: AZ WDESIGN: AC/AZ AS BUILT: p 5 8 OF 22 SHEETS ■ \ \\ \ \ \ \ \ \\ \\L \ 00 3 i i i ii = �\ — �63 3 \\ \-- — - — — — — _ \ \\ — — _ S� 632 S _ —U.S. FOREST S70 ERVICE _ n 30 \ 3 —APN 080-030-002-000 J \ / — — PO — \ i / N \ \ \ \ \ \ \ \ �_ �_ 1 1 1 U Cfl ='COMM \ \� coaro \ \\ — —� — �\ �� — � �� \\ �9s \ \ Z _\�� \\__�� = DIM_ _—�_--- ��`— ■ III \\\\ COM\ \-- MM (SIM \\COMivI� OMM Cp�iv Ad \ \� \—COMM \ \\\� \\\\ �_� �— --� w —I PFF:38.00'L \_\` _ __ ------ — � � GAS GA \ \ \ \ \ =i i — — — i O — — / S AS GA / P. GAS 1 �- - / / / \ \ \ \ \ \ W J Oj 0 — TA:51 +85.98 \ \ ss _ — cas AS cas _ As ' V J CO + \ \ \ `OFF:0.00' \ O \ TERFL 5 ' O \ I 52+00 / / / , 53+00 / 54+00 / 55+00 56+n0 57y00 ON HYDRANT TEE D\ !� /' ' O m V ! LO + iE — — — — — — — — / ._ — i ihF — — COMM — — 59+(jQ _ \ \ 6 O O 1 1 — --Comm — — — — — — — — — — — — — — — — — — > _ _ MM COMM COMM- Or 0 VJ �\-� �/ -_\-_-_--T])f`.+57� D2 11� \®I �a \ \\ \ \ \ �'6P I f ,/ /f - __ ==_- -='r -_�� _ = _ = - \ w I 1- r ( \ _ _ \ 7 = d CEO 1�1 _ ,� \I — �® �`� \• —\ Nam\ \ —\� \� \ \ al I \ •I� \ \ I I \N \ \ \ \ \\a. lop �P• N� V J ~ o • • \ ®\ o N n \ \I 4R a14P < _ I N \ • \ \ N \�(\J�\/ ` / / a \ \ • 18P `O \• • \ \ \ \ \ \ \ \ ^ •hj O m' / 1 N \ \ O / %' / I N / `N \ \ \ \� \ I I \ \ \ �' ` \ \ \ \ 1 �. 1 > \\ �\ \ \ / - ✓ / O 118P \ \ ` C \ \ \ I \CO \ \ I I D / I `\ 1��,\\ \ \ �jo \\\1 I II \ 1 \ \ Il00 l 1 \ \ \\ \\W7 \\,\\ \ \ / �� \\ \ \ \ \\ \ I I I ' o j I I \ 6' \ IN, \ S \ \ \ \ I I I I I I I I 1 \ o \ \ \ \ o) U.S. FOREST SERVICE \ \ \ \ \ \ \ \ \ \ \ I I I I Q \ III \ \ \ \ \ \ \ N APN 080-030-002-000 \ \ \ \ \ \ \ \ \ \ \ \ \ I I ' �01 ; I I I� I 1 1 111� I► l < < < < `\ ` \ \ \ \ \ \ I \ \ \ I \ ssPLAN \ \ \ \ 1 I I ill NOTES: z lii►�I - �CA�T_,E. 1„- 40 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. GRAPHIC SCALE 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 40 0 20 40 80 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS 1 inch = 40 ft. w SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. W O w o + � � o � O � o PROFILE Alignment - PT Waterline 50+00 to 60+00 w o 6335 6335 L.r) 6330 6330 ji1 Q w E-o 6325 6325 O � 6320 6320 6315 6310 6305 6300 6295 • 1, 6285 SCALE. I" = 40' (H) I" = 89 (V) 6315 6310 6305 6300 6295 6290 6285 1 Q Z DATE: 10-11-2021 r� SCALE: AS SHOWN DRAWN: AZ WDESIGN: AC/AZ AS BUILT: P6 9 OF 22 SHEETS 1 \ \ �I I I \ \ — — _ — _ / / U.S. FOREST SERVICE _ 1 CC) \ I ' �CALIFORNIA TAHOE CONSERVANCY a - I / _ — — APN 080-010-015-000 \ I '� \ \ \ 1 I \ \ \ \ \ \ � / APN 080 030 002-000 � ( \ \ \ \ \ \ \ \ \ \ \ \ \ \/� /.6330 i � Cow�— PROPERTY LINE, _-- �_ _ _ _ _ �_ 6300- - C _/6_—�///// O TYFdW // o �_ , 0 BENLIJ _�_==_ _= __ -_-_ -/// �� _ O STA:60+15.2 /� �/' /' /' / / / / / — �f '� — / —GA5 — / 69+00 zzz ZEE — _ 71 -77 1+00 ` — - GAS --P,fiS --_ — afts RPM 62+00 - 16" INLINE BUTTERFLY 5 — (�, 1 3�.84i2�v\� _ _ _ _ _ YDRANT TEE D2 c 65+00_ _ 40- r77t COMM -- ---moo— —/ -- —i��=MMMM �SJSE-� \\ 6P_ T I I I\ \1 \ \ CMO \ \ \ \ \\ I /P�. \ 10P' �� — — — — 22P a• 1 4P'�• 12P 114P i �• \ / — \� . 12P 34P/ 2 I FIRERANT N /— \ — U.S. FOREST SERVICE J g'q 6 D2 / \ / 1 "APN 080-030-002-000 " — — OF :20.0 / PROPDIP_ S: ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. 6325 6320 6315 6310 6305 6300 6295 6290 6285 60+00 60+50 61+00 SCALE: 1' =40' 1 _ / • a la I IfGP N a _ N J > N / D I I 6q+00 i / 67+00---,,Comm co m � � 0 Comm \ ® ® N 28P a \ 7 / I N N N �\ \ 1 \ C \ / / , VZ I \� CALIFORNIA TAHOE CONSERVANCY APN 080-010-015-000 POTENTIAL STAGING AREA 1 1 1 PROFILE Alignment - PT Waterline 60+00 to 70+00 r© J GRAPHIC SCALE 40 0 20 40 80 1 inch = 40 ft. 61+50 62+00 62+50 63+00 63+50 64+00 64+50 65+00 65+50 66+00 66+50 67+00 67+50 68+00 68+50 69+00 69+50 P IXDX IN'".) I F I L'rr_. SCALE: 1" = 40' (H) 1" = 8e (V) 6325 6320 6315 6310 6305 6300 6295 6290 6285 70+00 1 DATE: 10-11-2021 SCALE: AS SHOWN JDRAWN: AZ WDESIGN: AC/AZ AS BUILT: P7 10 OF 22 SHEETS CALIFORNIA TAHOE CONSERVANCY APN 080-010-015-000 rMirci Wk* w, rro - 'F�W r' 5 _JZ"LINEMTTERFLY Z D2 VALVE ON HYDRANT TEE m, = 71' � pp _ w m / m T� V ' l �—loo, 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. PROVIDE VERTICAL OFFSET OF NEW WATER MAIN AS REQUIRED. 6305 6300 6295 6290 3" • . a0el 6275 6270 6265 6 \ FIRE HYDRANT D2 I STA:71 +17.00 ISTING 12" SEWER MAIN 12" MIN CLEARANCE STII A-71 +62.50 EL EV:6267.83 � ss —CALIFORNIA TAHOE CONSERVANCY APN 080-010-019-000 / EXISTING ELECTRICAL & COMM TRENCH SEE NOTE 1. STA:71 +47.98 E6287.54 18" STORM DRA !-MIN CLEARANS E NOTES 1 AND STA:72+70. �--F ELEV:6286. I I MONTGOMERY EST. UNIT #9 HOMES _ _ _ -- APN 080-191-001-000 /� �' J — — _ _ I CALIFORNIA TAHOE CONSERVANCY UNIT #9 HOMES APN 080-191 -001 -000 3047 KOKANEE TRAIL \ SCALE: 1" = 40' PROFILE Alignment - PT Waterline 70+00 to 80+00 EXISTING GRADE 10' ORRUGATED METAL CULVERT. (TROUT CREEK CROS ING)l I- I I I 42" MIN COVER, TfP P IXDX IN'".) I F I L'rr_. SCALE: 1" = 40' (]H[) 1" = 8' (V) 1,2 D2 8" RESTRAINED COUPLER _� EXISTING 8" C900 PROPOSED 8" C900 8" BEND (FLxMJ) 12"x8" REDUCER (FLxFL) "-- 8" BEND (MJxMJ) - PROPOSED 8" C900 12" GATE VALVE (FLxMJ) PROPOSED 12" DIP DETAIL I SCALE: 1" = 5' GRAPHIC SCALE 0 20 40 1 inch = 40 ft. \� I CITY OF SOUTH LAKE TAHOE APN 080 010-013-000 ,L Q \ \ \ \ \ \NN , � O \ice fox � \\ \\ 6305 6300 6295 6290 • . :1 6275 6270 6265 H O z I J W 0 U Q0 0 m q Lv Q rr � CID O W U W O + F� MO W �urn o z � o o h w o � w � Z a cn O � DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: P8 11 OF 22 SHEETS NOTES: 1. ACTUAL LOCATION AND DEPTH OF EXISTING UTILITIES SHOWN ON PLANS ARE APPROXIMATE. CONTRACTOR SHALL POTHOLE AND VERIFY EXISTING UTILITIES PRIOR TO CONSTRUCTION. 2. CONTRACTOR SHALL PROVIDE SAMPLE PORTS PER DETAIL 2 OF SHEET D3 AT A MINIMUM OF EVERY 600' FOR PIPELINE DISINFECTION AND TESTING. 3. CONTRACTOR SHALL PROTECT EXISTING CURB AND GUTTER THROUGHOUT CONSTRUCTION. ANY CURB AND GUTTER THAT IS REMOVED OR DAMAGED DURING CONSTRUCTION SHALL BE REPLACED PER EL DORADO COUNTY STANDARDS AS SHOWN BY DETAIL 3 OF SHEET D3. 4. CONTRACTOR SHALL COMPLY WITH CALIFORNIA DEPARTMENT OF DRINKING WATER STANDARDS FOR INSTALLATION OF NEW WATER MAINS. A FULL UNCUT STICK OF PIPE SHALL BE CENTERED ON ALL SEWER AND STORM DRAIN CROSSINGS. PROVIDE VERTICAL OFFSET OF NEW WATER MAIN AS REQUIRED. 12" GATE VALE (FLxMJ) 10" BEND (FLxMJ PROPOSED 12" DIP 12"x10" REDUCER (FLxFL) PROPOSED 10" C900 10" BEND (MJxMJ) PROPOSED 10" C900 TRANSITION COUPLERe PER DETAIL D1 DETAIL I SCALE: I" = 5' 4' MIN 8" BEND (MJxMJ) EXISTING DROP INLET PROPOSED 8" C900 8" BEND (MJxMJ) PROPOSED 8" C900 TRANSITION COUPLER 3 EXISTING 8" STEEL PER DETAIL D1 (48" BSG, +\-12") —ucE 6 FIRE HYDRANT CITY OF SOUTH LAKE TAHOE D1 STA:2+22.00 APN 080-010-013-000 / I \ 2432 CATTLEMANS TRAILS --- ` PRO RTY LINE, TTYP 2438 CATTLEMANS TRAIL 12442 CATTLEMANS TRAIL + UGE _��T �N CONNECT TO EXISTING i WATEF 1J4IN PER I I • ,6p 2454 CATTLEMANS TRAIL - - _ - -CD\ ABOV UND N w N rrr— 05, GNU STEEL \\_-__�T -_ 1441a/ / / / - -COUNTY ROW �S _ �ER M � _� _REFS_ � _ \ � �- GAS ----- — — —_= �.J SS — SS G%S SS — — — —6A GAS— / GAS S �. SS — __ S / - i� _ O GAS 55.— — — — — — / i SS _ 90° BEND -r�- - -I STA:82+89.82 SFE DETAIL 5 83+00 SHEETTss 82+00 OFF:2.00' UGE - 85+0 , r (1) ou AM 8P1op\ \ �� TIC 12 ��y - - P�O ELF 1�n �IP g3 _ \\ I�f / -FROPCQSE 12" D ✓tap p 12P S SP \ \ 12P TRF �4p Z D2 - 10($p( T Xa �IN I D2 P • _ 18N • • FS '8p `" OP \ _ ` WA ER MAIN '411v \\ /// �3ea- \\ \\ / �,,� W \ • �sp24p aP �'.p �P�/ m J D2 �` PROPOSED 12-DIRTR \ \ \ \ I / \ l/ll �� \TRF - - - - - \� - \ _ - _ \ \ I FS I m�-10 �_ / 2043 MARHSALL TRAIL _ \63 �� \ \ \ 3093 KOKANEE TRAIL /\ / �� - \ ` / n n XMAIN NECT O TING CfJ \ �s \ \ \ I / \ O -W PER E IL 2 / \ \ EXISTING 10" TEEL 3068 KOKANEE TRAIL\ _ y \ 3073 KOKANEE TRAIL I > EXISTING 8 ST L WATER MA I / z WAT R M IN EXISTING 10" STEEL — (48" BSG, +\-12") w z 10" BEND (MJxMJ) —/ PROPOSED 10" C900 12" FLxMJ ADAPTER PROPOSED 12" C900 0- TRANSITION COUPLER e PER DETAIL D1 PROPOSED 10" C900 w z 10" BEND (FLxMJ) 12"x10" REDUCER (FLxFL) DETAIL 2 DETAIL 3 SCALE: 1" - 5' SCALE: 1" = 5' EXISTING COMM VAULT jai PROPOSED 16" DIP 16" BUTTERFLY VALVE (FLxMJ) 16"x10" REDUCER (FLxFL) �� 10" BEND (FLxMJ) PROFILE Alignment - PT Waterline 80+00 to 87+50 6315 6310 6305 6300 6295 6285 80+00 80+50 81+00 81+50 82+00 82+50 83+00 83+50 84+00 84+50 P,ILD.0FIL'Ir�.-1. SCALE: I" = 40' (]H) I" = 8' (V) PROPOSED 10" C900 TRANSITION COUPLERe PER DETAIL D1 EXISTING 10" STEEL (48" BSG, +\-12") PROPOSED 10" C900 DETAIL 4 SCALE: 1" - 5' 85+00 85+50 86+00 86+50 87+00 6315 6310 6305 6300 6295 6290 6285 87+50 PROPOSED 12" DIP PROPOSED 16" DIP 6320 6315 6310 6305 6300 6295 6290 6285 CONNECT TO o EXISTING WATER - rf;� fN PER DETAIL 4 87+50 y 87+00 _—_ c MM /V C M - — • 72p - EE •'2p, ®38p ' O WATE MAN ''op 1661 MAIDENHAIR CT. GRAPHIC SCALE 1 T RM DRAIN 40 0 20 40 80 24" O AIN o + o - i1655 MAIDENHAIR CT. 1 inch = 40 ft. U) 0 0 DETAIL 5 � SCALE. 1" = 5' PROFILE Alignment - Marshall Trail Centerline 63J5 >41 09@09 0+00 0+50 1+00 1+50 2+00 2+50 3+ 0 P1.D.0F1L'rr "_ ' � b' = 8(V) m 0- LLJ O Q O W I� U W O + E-o ^� F10 TO V ' �uno z � o o h w o � w � Z a cn O � r.� DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: P9 12 OF 22 SHEETS - / I / 1 I I I I PROPOSED 12" C900 I 16" DUCTILE IRON PIPE 8" C900 PIPE AO° BEND 90° BEND STA:17+61.57 OFF:2.00'L � 10' � - - - _ - - - - OFF:0�00' 90° BEND STA:17+67.23 OFF:0.00' 4 I � I � 18+00 2'TDOMESTICRV 8" FIRE � \-90' BEND v KOKAI�EE PRV STA:1 +83.87 90 BEND CLEAR AND GRUB SITE AS NECESSARY 16" DUCTILE IRON PIPE � �„ 1-2 OIL 2 DOMESTIC STA:1+77.85 TO INSTALL PRV STATION AND PIPING I w U Z 8" FIRE 4 >�� _U ��w / I - _ z o � iv � � p � � iv � GOLDEN BEAR PRV 90°BEND STA:1 +71.83 � I 2" DOtV1ESTIC 8"FI E ° 90 BEND 90° BEND z 12' STA:17+66.65� � OFF:11.77'R �- STA:1+66.85 I COUN Y U W U 0�Q o m4-1 q W Q O Q R _ 1 co O o CZCZ �I I I ill W U � W 0w C H C4 cry � H � w ^w wO W �^ w C DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: Dl 13 OF 22 SHEETS ROAl 0 >= W EXISTING A.C. PAVEMENT THICKNESS MAY VARY CLASS 2 AGGREGATE BASE COMPACTED TO 95% RELATIVE COMPACTION. CITY OF SO. LAKE TAHOE R.O.W. = 8" ELDORADO CO. R.O.W. = 8" OUTSIDE R.O.W. MIN = 4" PROJECT EXCAVATED MATERIAL AS SPECIFIED (COMPACTED BACKFILL AT 95% RELATIVE COMPACTION) WITHIN CITY OF SO. LAKE TAHOE AND EL DORADO CO. R. 0. W.' S BACKFILL WITH IN CAL -TRANS R.O.W. SHALL BE 2 SACK SAND SLURRY PER CAL -TRANS SPECS FROM BOTTOM OF NEW ASPHALT TO 30 INCH DEPTH WITHIN THE TRENCH ZONE UNLESS OTHERWISE SPECIFIED. 10 GA. INSULATED SOLID COPPER TRACER WIRE — (NOT REQUIRED WITH CONDUCTIVE PIPE IF PERMANENTLY BONDED AT EACH JOINT) SEE GENERAL NOTE #13 CLASS 2 AGGREGATE BASE, JETTED TO SPRING LINE, MECHANICAL COMPACTION TO 95% RELATIVE COMPACTION ABOVE SPRING LINE NOTES: THICKNESS OF REPLACEMENT AC PAVEMENT CITY OF SO. LAKE TAHOE R.O.W. = 4" ELDORADO CO. R.O.W. - 3" CAL -TRANS R.O.W. = 4" OUTSIDE R.O.W. MIN = 2 1 /2" \ 12" MIN CITY SLT R.O.W. EL DORADO COUNTY R.O.W. 12" MIN 6" MIN 12" MAX 6" MIN 1) CONTRACTOR PAY ITEM FOR TRENCH WIDTH PLUS TWENTY FOUR INCHES (24") IN CITY OF SOUTH LAKE TAHOE AND EL DORADO COUNTY RIGHT OF WAY. TRENCH WIDTH AND TRENCH PAVEMENT REPLACEMENT EXCEEDING MAXIMUM AS DESCRIBED HERE IN AND IN THE SPECIFICATIONS SHALL BE COMPLETED AT NO ADDITIONAL EXPENSE TO THE DISTRICT. 2) CONTRACTOR SHALL REPLACE ALL TRAFFIC STRIPING DISTURBED BY CONSTRUCTION. 3) NO RECYCLED MATERIAL TO BE USED IN PIPE ZONE. 1 TRENCH DETAIL - WITHIN PAVED AREAS THRUST BOCK AREA REQUIRED SQUARE FEET TYPE OF 90` 45° 22.5° 11.25` TEE TEE CROSS CROSS FITTING ELBOW ELBOW ELBOW ELBOW BRANCH W/ PLUG W/ PLUG W/ PLUGS g �Z i .A�sev 6" 4 4 2 2 4 4 4 4 8" 10 6 3 3 10 10 10 10 w loll 12 8 4 4 15 15 15 15 w 12" 16 10 6 6 20 20 20 20 0 14" 21 12 6 6 22 21 22 21 w N Cn 16" 27 15 8 8 22 27 27 27 18" 45 25 13 13 32 45 45 45 24" 65 35 18 18 45 65 65 65 SECTION 12" MIN w w n w O n O 0 z_ u CONTRACTOR SHALL REVEGETATE AND RESTORE ALL AREAS DISTURBED BY CONSTRUCTION ACTIVITY PER SPECIFICATIONS 2" HIGH MOUND GRPpE EX\S�\NG PROJECT EXCAVATED MATERIAL AS SPECIFIED (COMPACTED BACKFILL © 90% RELATIVE COMPACTION) 10 GA. INSULATED SOLID COPPER TRACER WIRE (NOT REQUIRED WITH CONDUCTIVE PIPE IF PERMANENTLY BONDED AT EACH JOINT) SEE GENERAL NOTE #13 CLASS 2 AGGREGATE BASE, JETTED TO SPRING LINE, MECHANICAL COMPACTION TO 95% RELATIVE COMPACTION ABOVE SPRING LINE 12" MAX 6" MIN Isimmells NOTE: 1) NO RECYCLED MATERIAL TO BE USED IN PIPE ZONE. 2 TRENCH DETAIL - OUTSIDE PAVED AREAS EXISTING GRADE SAND SLURRY BACKFILL, SEE NOTE #11 PVC RISER, SEE NOTES #3 & 10 10 GA. INSULATED EARING SOLID COPPER TRACER REA I WIRE, SEE NOTE #5 g NOTES: 1) JOINTS, FLANGE BOLTS AND FACE OF PLUGS TO BE KEPT CLEAR OF CONCRETE. 2) BLOCKS MUST BE POURED AGAINST UNDISTURBED SOIL. 3) THRUST BLOCKS TO BE CONSTRUCTED OF CLASS 423-C-2500 OR BETTER P.C.C. 4) THRUST BLOCKS AREA IS BASED ON TEST PRESSURE OF 150 PSI AND A HORIZONTAL SOIL BEARING STRENGTH OF 1500 PSI. 5) NUTS AND BOLTS ON ALL MJ FITTINGS SHALL BE PAINTED WITH TWO COATS OF KOPPERS 505, TNEMEC 46-450', AMERON OR EQUAL, 15 MILS EACH COAT. 4 TYPICAL THRUST BLOCK u 12" MIN 6" MIN 6" LOOP IN TRACER WIRE ,-VALVE BOX, TYP. SEE NOTES #3 & 4 u u SELF CENTERING RING, SEE NOTE #10 _ 00 a e e ► ° s D e D ► n ° a GATE VALVE SIZE SUPPORT BLOCK DIMENSION 6 USE 1- 4"X8"X16" PRECAST STRUCTURAL SUPPORT BLOCK 8" 10" [-W-- . _ L BJ GATE VALVE SIZE CAST IN PLACE CONCRETE A (FT) B (FT) 12" 2.0 2.0 14" 2.5 2.5 16" 3.0 1 3.0 18" 3.0 1 3.0 NOTES: 1) GATE VALVES FOURTEEN INCH (14") DIAMETER AND SMALLER SHALL BE MUELLER OR APPROVED EQUAL AS PER AWWA C-509, RESILIENT RUBBER SEAT RING, WEDGE DISC, NON -RISING STEM. BRONZE STEM NUT AND O-RING SEALS ABOVE AND BELOW THE THRUST COLLAR, WITH TWO INCH (2") SQUARE OPERATING NUT. VALVES SIXTEEN INCH (16") AND LARGER SHALL BE BUTTERFLY VALVES AS SPECIFIED AND SUBMITTED FOR APPROVAL. 2) THE MAIN LINE VALVE CLUSTER SHALL CONSIST OF A FLANGED TEE AND FLANGED X MECHANICAL JOINT VALVES OR FLANGED COUPLING ADAPTERS. 3) VALVE BOX RISER PIPE TO BE EIGHT INCH (8") PVC, SDR-35 AND INSTALLED PERPENDICULARLY CENTERED AROUND AND COVERING THE UPPER VALVE BONNET AND OPERATOR. 4) VALVE BOX SHALL BE CHRISTY G5 BOX WITH METAL LID MARKED "WATER" 5) THE 10 GA. TRACER WIRE SHALL BE ROUTED FROM THE NEW MAIN, LOOPED THROUGH THE VALVE BOXES AND CLAMPED TO THE EXISTING WATER MAIN 6) USING STAINLESS STEEL CLAMPS. CONTINUITY BETWEEN ALL NEW AND EXISTING PIPELINES SHALL BE MAINTAINED. 7) EXPOSED NUTS AND BOLTS ON MJ FITTINGS TO BE PAINTED WITH TWO COATS OF KOPPERS 505, TNEMEC 46-450, AMERON OR EQUAL 15 MILS EACH COAT. 8) ALL FLANGES TO BE BURIED, COAT ENTIRE ASSEMBLY WITH PETROLATUM SATURATED FABRIC TAPE WRAP SYSTEM IN ACCORDANCE WITH DISTRICT REQUIREMENTS. 9) CONCRETE FOR SUPPORT BLOCKS SHALL BE FORMED TO MAINTAIN MINIMUM TWO INCH (2") CLEARANCE FROM FLANGE BOLTS. 10)PRE CAST STRUCTURAL SUPPORT BLOCKS SHALL BE SOLID AND CONFORM TO ASTM C90. 11) PROVIDE AND INSTALL SELF CENTERING ALIGNMENT RING WITH SLIDING ADJUSTER AS MANUFACTURED BY THE AMERICAN FLOW CONTROL CORP. AND SUPPLIED FOR A TRENCH ADAPTER VALVE BOX ASSEMBLY. 12) THE REQUIREMENTS FOR TRENCH BACK FILL AT ALL INTER TIE VALVE CLUSTERS SHALL INCLUDE THE PLACEMENT OF TWO SACK SAND SLURRY WITHIN 3' OF ALL VALVE BOXES BETWEEN THE AB PIPE ZONE MATERIAL AND BOTTOM OF AC PAVEMENT. THIS REQUIREMENT SHALL NOT APPLY TO SINGLE VALVE INSTALLATIONS. 13) FOR ALL VALVE OPERATING NUTS EXCEEDING FORTY EIGHT INCHES (48") BURY THE CONTRACTOR SHALL PROVIDE VALVE OPERATOR EXTENSIONS WITH TRASH RINGS TO A MINIMUM DEPTH OF THIRTY SIX INCHES (36"). 5 WATER VALVE ASSEMBLY FITTING AND PIPE RESTRAINT LENGTH REQUIREMENTS TYPE OF 90° 45° 22.5` 11.25° TEE TEE REDUCER** VALVE VALVE DEAD FITTING ELBOW ELBOW ELBOW ELBOW BRANCH* W/ PLUG INLINE AT END END 0 z 6" PVC 14' 6' 3' 2' 10'* 14' 41' 42' 42' 42' DIP 16' 7' 4' 2' 10'* 16' 61' 63' 63' 63' 8" 18, 8' 4' 2' 10'* 18, 41' 55' 55' 55' DIP DIP 21' 9' 5' 2' 10'* 21' 62' 82' 82' 82' loll PVC 22' 6' 5' 3' 10'* 22' 43' 66' 66' 66' w D_ DIP 25' 10' 5' 3' 10'* 25' 63' 99, 99, 99' 12" PVC 26' 11' 6' 3' 15' 26' 43' 78' 78' 78' w DIP 29' 12' 6' 3' 23' 29' 64' 117' 117' 117' O 14 PVC 29 12' 6' 3' 25' 29' 43' 90' 90' 90' w DIP 33' 14' 7' 4' 39' 33, 64' 133' 133' 133, N_ N 16" PVC 33, 14' 7' 4' 36, 33, 44' loll 101' 101' DIP 36' 15' 8' 4' 55' 36' 65' 150' 150' 150' 18" PVC 36' 15' 8' 4' 46' 36' 62' 112' 112' 112' DIP 40' 17' 8' 4' 71' 40' 92' 167' 167' 167' 24" PVC 45' 19, 9' 4' 76' 45' 62' 144' 144' 144' DIP 51 ' 21' 10' 4' 116' 51 ' 92' 214' 214' 214' * MINIMUM 10' RESTRAINED LENGTH ON EACH RUN ON BOTH SIDES OF BRANCH ** LENGTHS GIVEN ARE VALID FOR UP TO 4" INCREASE IN NOMINAL DIAMETER FROM SIZE SHOWN NOTES: 1) ALL MINIMUM RESTRAINT LENGTH CALCULATIONS BASED ON MINIMUM 10' PIPE LENGTH'S. MINIMUM PIPE LENGT FOR DUCTILE IRON PIPE FITTINGS BASED ON POLYETHYLENE ENCASEMENT. 0 2) NUTS AND BOLTS ON ALL MJ FITTINGS SHALL BE PAINTED WITH TWO COATS OF KOPPERS 505, TNEMEC 46-450', AMERON OR EQUAL, 15 MILS EACH COAT. 3) ALL FLANGES TO BE BURIED, COAT ENTIRE ASSEMBLY WITH PETROLATUM SATURATED FABRIC TAPE. WRAP SYSTEM IN ACCORDANCE WITH SPECIFICATIONS. 4) CONCRETE THRUST BLOCKING MAY BE REQUIRED IN CONJUNCTION WITH MECHANICAL THRUST RESTRAINT SYSTEMS IF DETERMINED NECESSARY BY THE ENGINEER. 5) VALVES PLACED IN A RUN OF PIPE OR AT A DEAD END TO BE RESTRAINED PER DEAD END RESTRAINT LENGTHS. 4) ALL VALVE CLUSTERS (CROSS OR TEE) USE THE RESTRAINT LENGTHS FOR THE 90° ELBOW. 3 RESTRAINT LENGTH SCHEDULE STANDARD 1 1 /2" PENTAGON OPERATING NUT OUTLET CAPS 4" OUTLET FACING STREET UNLESS OTHERWISE NOTED TO HAVE MATCHING SIZE NUT OR DIRECTED o RESTORE TO PRE-EXISTING GRADE WRAP TRACER WIRE VALVE BOX & COVER, AROUND HYDRANT SEE NOTE #3 HYDRANT INSTALLATION TO BE AT BURY LINE AND NOT TO 8" PVC RISER PIPE EXCEED - BACKFILL AND COMPACTION 3" ABOVE FINAL GRADE REQUIREMENTS INSTALL SELF CENTERING I�■■` WRAP FILTER FABRIC PER SPECIFICATIONS SEE NOTE #9 OVER DRAIN ROCK MIN. 12" - 3/4" DRAIN ROCK 10 GA. INSULATE SOLID COPPER HYDRANT WEEP HOLE TO SEE NOTE #5 �� TRACER WIRE REMAIN CLEAR D SEE NOTE #20 CONCRETE SUPPORT BLOCK 6" FLG X MJ GATE VALVE, CONFORMING TO SPECIFICATIONS SEE PLANS FOR LOCATION NOTES: 1) FIRE HYDRANT SHALL BE MUELLER A-423 "CENTURION" WITH 2-2 1/2" HOSE NOZZLES AND 1-4" PUMPER NOZZLE AND CONFORM TO AWWA ' C-502-80. HYDRANTS WITHIN THE CITY OF SOUTH LAKE TAHOE SHALL BE PAINTED WITH A MINIMUM OF THREE COATS OF SPRAY MATE "ALUMINUM METALLIC", COLOR CODE 0180 OR APPROVED EQUAL. 2) FIRE LINE TEE ON NEW MAIN SHALL BE DUCTILE IRON MJ X MJ WITH 6" FLANGED BRANCH THE SAME PRESSURE RATING AS THE PIPELINE BEING INSTALLED. >= 3) GATE VALVE SHALL BE MJ X FLANGED RESILIENT WEDGE GATE VALVE EPDXY LINED AND COATED. WITH CHRISTY G5 VALVE BOX AND METAL LID STAMPED "WATER". 4) HYDRANT THRUST BLOCK SHALL HAVE A MINIMUM BEARING SURFACE OF 6 SQ. FEET. ALL FLANGES TO BE BURIED, COAT ENTIRE ASSEMBLY WITH PETROLATUM SATURATED FABRIC TAPE WRAP SYSTEM IN ACCORDANCE WITH DISTRICT REQUIREMENTS, CONCRETE FOR THRUST BLOCKS SHALL BE FORMED TO MAINTAIN A MINIMUM CLEARANCE OF TWO INCHES (2") FROM FLANGE BOLTS. 5) THE ENTIRE HYDRANT ASSEMBLY FROM THE MAIN TO THE HYDRANT SHALL BE RESTRAINED. FIRE LINE, GATE VALVE AND HYDRANT MECHANICAL J01 TO BE INSTALLED WITH US PIPE MJ GRIPPER GLAND, EBAA-IRON MEGALUG 110OSD SERIES FOR DUCTILE IRON PIPE. RESTRAINED JOINTS FOR PVC PIPE SHALL BE EBAA-IRON MEGALUG SERIES 2000 OR 1100PV OR APPROVED EQUAL. 6) HYDRANT ASSEMBLY SHALL PASS HYDROSTATIC PRESSURE AND DISINFECTION TESTING AS SPECIFIED ALONG WITH NEW PIPELINE PRIOR TO BEING PLACED INTO SERVICE. 7) HYDRANTS SHALL BE LOCATED AS SHOWN ON THE PROJECT DRAWINGS, TWO FEET (2') INSIDE R.O.W. OR AS DIRECTED BY THE DISTRICT ENGINEER AND MUST HAVE A MINIMUM OF TEN FEET (10') CLEARANCE FROM ANY DRIVEWAY. THE EXACT LOCATIONS FOR THE FIRE HYDRANT INSTALLATIONS WILL DETERMINED IN THE FIELD. IN THE CITY OF SILT HYDRANTS SHALL BE AT LEAST 6' BEYOND EOP, 2' BEHIND BACK OF CURB, AND AT LEAST 50' FR 8) THE CENTERLINE OF INTERSECTIONS. 9) HYDRANTS SHALL BE INSTALLED WITH THE BOTTOM OF THE PUMPER NOZZLE A MINIMUM OF EIGHTEEN INCHES (18") ABOVE THE GROUND. 10) PROVIDE AND INSTALL SELF -CENTERING ALIGNMENT RING WITH SLIDING ADJUSTER AS MANUFACTURED BY THE AMERICAN FLOW CONTROL CORP. AND SUPPLIED FOR A TRENCH ADAPTER VALVE BOX ASSEMBLY. 11) FOR ALL VALVE OPERATING NUTS EXCEEDING 48" BURY THE CONTRACTOR SHALL PROVIDE VALVE OPERATOR EXTENSIONS WITH TRASH RINGS TO A MINIMUM DEPTH OF THIRTY SIX INCHES (36"). 6 FIRE HYDRANT ASSEMBLY Q) U 0 ��Q N CIO J � m q LLJ 0 M O 2 w � V W O <� a � w h w Q w w o � a DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: D2 14 OF 22 SHEETS INTERTIE TO EXISTING WATER SERVICE LINE WITH RESTRAINED COMPRESSION COUPLING AND BRASS FITTINGS AS REQUIRED TEST STATION IN ASPHALT POLYETHYLENE TUBING SIZED AS INDICATED ON THE PROJECT DRAWINGS AND NOTE #6 10 GA. INSULATED SOLID COPPER TRACER WIRE SEE NOTE#10, GENERAL NOTE #13 SEE NOTE #7 3/4" POLYETHYLENE TUBIN MUELLER #300/620283 CURB STOP OR EQUAL TO FIT 42". MIN I 1 u�OVER CURB STOP AND4" SDR 35 RISERCHED SERVICE LINE �INTERTIE TO EXISTING WATER SERVICE LINE WITH RESTRAINED COMPRESSION COUPLING AND BRASS FITTINGS AS REQUIRED CURB STOP SEE NOTE #2 BRASS 45' ELBOW, SIZE TO MATCH ORP. STOP -E NOTE #3 DUCTILE IRON EPDXY COATED SADDLE CLAMP SEE NOTE #1 CORP.STOP SEE NOTE #3 SADDLE OFF MAIN "U" BRANCH SEE NOTE #4 —1" POLYETHYLENE TUBING DOUBLE SERVICE NOTES: 1) ALL SERVICE CONNECTIONS SHALL CONFORM TO AWWA C-800-84 AND BE INSTALLED FROM THE NEW MAIN TO EACH EXISTING SERVICE LINE. SERVICE SADDLE SHALL BE DOUBLE STAINLESS STEEL STRAP, FUSION BONDED EPDXY COATED SMITH BLAIR #317 OR APPROVED EQUAL. 2) NEW CURB -STOP SHALL BE SIZED AS INDICATED ON PLANS AND BE MUELLER #300/620283 OR APPROVED EQUAL. 3) CORPORATION STOP SHALL BE SIZED AS INDICATED ON PLANS AND BE MUELLER #300/1320013 OR APPROVED EQUAL FOR 3/4" TO 1" USE MUELLER #300/2969 OR APPROVED EQUAL FOR 1 1/2" TO 2". 4) SINGLE HOUSE SERVICE SHALL BE 3/4" POLYETHYLENE WITH 3/4" FITTINGS. DOUBLE HOUSE SERVICE SHALL BE 1" POLYETHYLENE TO FORD #U68-43 SPACING "U" BRANCH OR EQUAL WITH TWO 3/4" CURB -STOPS AND SERVICE CONNECTIONS. 5) ALL WATER SERVICES SHALL HAVE A HAND -TAMPED SAND BEDDING NINE INCHES (9") ABOVE AND BENEATH THE TUBING AND SHALL HAVE SIX INCHES (6") MINIMUM CLEARANCE ON EACH SIDE. 6) ALL WATER SERVICE SHALL BE POLYETHYLENE 200 PSI CLASS IRON PIPE SIZE FOR 3/4" TO 1". COPPER TUBE SIZE FOR 1 1/2" TO 2". PIPE STIFFENER INSERTS TO BE USED AT ALL CONNECTIONS. 7) WATER VALVE BOX SHALL BE CHRISTY G5 FOR SINGLE SERVICE, AND CHRISTY B1017 FOR DOUBLE SERVICE OR APPROVED EQUAL WITH A METAL LID MARKED "WATER". WATER VALVE BOX INSTALLED IN ASPHALT SHALL BE 1/4" TO 1/2" BELOW FINISH GRADE. 8) ALL CORP-STOPS, CURB -STOPS AND POLYETHYLENE SERVICE LINES SHALL BE DISINFECTED AND HYDROSTATIC TESTED ALONG WITH THE NEW MAIN PRIOR TO BEING PLACED INTO SERVICE. 9) ALL TUBING CONNECTIONS SHALL BE THE COMPRESSION TYPE; MUELLER OR APPROVED EQUAL. 10) 10 GA. SOLID COPPER TRACER WIRE SHALL BE INSTALLED FROM THE NEW MAIN ALONG NEW SERVICE LINE TO THE EXISTING WATER SERVICE LINE WITH A SIX INCH (6") MINIMUM LOOP AT THE TOP OF THE RISER PIPE. 11) WATER SERVICE CONNECTIONS INSTALLED ON THE OPPOSITE SIDE OF THE STREET FROM WATER MAIN SHALL UTILIZE TRENCHLESS TECHNOLOGY (I.E. PNEUMATIC RAM OR MOLE) OR OTHER METHOD APPROVED BY DISTRICT ENGINEER. 1 WATER SERVICE CLASS 2 AGGREGATE BASE, JETTED TO SPRING LINE, MECHANICAL COMPACTION TO 95% RELATIVE COMPACTION ABOVE SPRING LINE WWW�FArINNN lr11100 1ORFAIEMal /.g11 4' MIN 10 GA. INSULATED SOLID COPPER TRACER WIRE SEE GENERAL NOTE #13 45° ELBOWS, RESTRAINED JOINTS NOTES: \-6" CLASS 2 AGGREGATE BASE 1) CONSTRUCT WATERLINE USING ONE OF THE FOLLOWING METHODS: A) THE WATER MAIN SHALL BE CONSTRUCTED PLACING A FULL STICK OF PIPE CENTER ON THE CROSSING, WITH NO PIPE JOINTS IN THAT SECTION, OR; B) THE WATER MAIN IS TOTALLY ENCASED IN AT LEAST FOUR INCHES (4") OF TWO (2) SACK DRY SAND CEMENT SLURRY FOR A DISTANCE OF AT LEAST TEN FEET (10') ON EACH SIDE OF THE POINT OF CROSSING, OR; C) THE WATER MAIN IS INSTALLED IN A PIPE SLEEVE THAT EXTENDS, WITHOUT JOINTS, AT LEAST TEN FEET (10') ON EACH SIDE OF THE POINT OF CROSSING. 2) ALL JOINTS SHALL BE RESTRAINED. 3) IF COMPACTION UNDER EXISTING UTILITY CAN NOT BE ACCOMPLISHED, USE TWO (2) SACK SAND SLURRY TO FILL THE VOID UNDER THE UTILITY. 4) NO RECYCLED BASE IN PIPE ZONE BACKFILL OF NEW WATER MAIN OR EXISTING UTILITY. 5) DUE TO FIELD CONDITIONS ONE OR MORE 45° ELBOWS MAY BE EXCHANGED FOR 90° ELBOWS AS REQUIRED TO MAKE OFFSET. 4 WATER MAIN VERTICAL OFFSET INSTALLATION CHRISTY B1017 TRAFFIC RATED BOX W/METAL LID MARKED "WATER" �2" CURB STOP 2" POLY PIPE 2" CORP STOP, 2" COUPLING 2" DUCTILE IRON EPDXY COATED SADDLE CLAMP NEW WATERLINE TEST STATION IN SHOULDER 2" CURB STOP 24" ABOVE FINAL GRADE 3' MINIMUM OUTSIDE EOP TEMPORARY PAVEMENT 2" POLY PIPE \-- 2" CORP STOP, 2" COUPLING AND 90° FITTING 2" DUCTILE IRON EPDXY COATED SADDLE CLAMP NEW WATERLINE ABANDONMENT NOTE: 1) CORPORATION STOP SHALL BE MUELLER #300/2969 OR APPROVED EQUAL. 2) CONTRACTOR TO DEMOLISH PIPING AFTER ALL DISINFECTION TESTING IS COMPLETE. 2 TEST STATION ED( PAVE SEE NOTE#2 SEE NOTE#3 12" h NOTE: REPLACEMENT SECTION 12' TYPICAL PER TRENCH DETAIL nrn\A AKIrn lT °n ILVJL L CORP STOP f-PERMANENT AC 2" BRASS PLUG CLOSE 2" CORP STOP ROAD IG AC ESS VARIES 1) APPLY TACK COAT ON ALL EDGES SAWCUT OR GROUND OUT 2) CONTRACTOR TO BACK FINISHED PAVING WITH 12" MINIMUM GRANULAR MATERIAL (NATIVE/GRINDINGS/TYPE II) AND WHEEL ROLL TO STABILIZE 3) TYPE II AGG BASE 8" MINIMUM THICKNESS COMPACTED TO 95% RELATIVE COMPACTION 4) CONTRACTOR TO REPLACE ALL STRIPPING DAMAGED OR REMOVED DURING CONSTRUCTION 5) CONTRACTOR TO REMOVE ANY LOOSE ASPHALT IN GRIND OUT SECTION PRIOR TO INSTALL OF NEW ASPHALT 6) ALL PAVING REPLACEMENT LIMITS TO FIELD VERIFIED WITH ENGINEER 7) IF TRENCH EDGE IS WITHIN 36" OF EDGE OF PAVING CONTINUE TEE TO EDGE, IF THE DISTANCE IS GREATER THAN 36" STOP TEE AT 12" 5 SINGLE LANE PAVEMENT REPLACEMENT PLAN EXISTING EXPANSION JOINT 12" DOWEL AND EPDXY TYP. #4 BAR 4" MINIMUM ° ° D d d D D ° D p dD D ° p D d o � d d p d d ° D p D �o d EXISTING CURB AND GUTTER REPLACEMENT CURB AND GUTTER--// (MATCH EXISTING) SECTION BAR 3" CLEAR MIN 6" THICK MINIMUM CLASS 2 AG(,,,L-,, BASE, MECHANICAL COMPACTION TO 95% RELATIVE COMPACTION. r EXISTING EXPANSION JOINT NOTES: 1) WHERE REQUIRED FOR WATERLINE AND SERVICE INSTALLATIONS, CURB AND GUTTER REPLACEMENT SHALL BE COMPLETELY REPLACED BETWEEN EXISTING EXPANSION JOINTS. CURB AND GUTTER REPLACEMENT EXCEEDING MAXIMUM AS DESCRIBED HERE IN AND IN THE SPECIFICATIONS SHALL BE COMPLETED AT NO ADDITIONAL EXPENSE TO THE DISTRICT. 2) CONCRETE FOR CURB AND GUTTER SHALL BE CLASS A (4,000 PSI) PER THE SPECIFICATIONS. 3 CURB AND GUTTER REPLACEMENT o U O H O z TRENCH WIDTH PER TRENCH DETAIL NOTES: 1) WHERE SEWER LATERAL IS DAMAGED DURING CONSTRUCTION, THE LATERAL SHALL BE CUT AND REPLACED FO,< A DISTANCE OF AT LEAST FIVE FEET (5) ON EACH SIDE OF THE POINT OF CROSSING. 2) ALL SEWER LATERAL REPLACEMENT PIPING SHALL BE PVC SDR 26 UNLESS NOTED OR APPROVED BY THE DISTRICT. 3) ALL COUPLING, ADAPTERS AND MATERIALS USED TO CONNECT PVC SDR 26 PIPING TO OTHER PIPE MATERIALS SHALL BE APPROVED BY THE DISTRICT. ��t 4) ALL SEWER LATERAL REPAIRS SHALL BE BACKFILLED WITH COMPACTED OR JETTED CLASS 2 AGGREGATE BASE MATERIAL AS REQUIRED BY THE DISTRICT PER TRENCH DETAIL. 6 NOT USED H— V / (\Lr I J_ J m m W 0 0 0 O O � � O co c� 11C^^P vJ o 42 co 5 C2 � co 2 DATE: 10-11-2021 SCALE: AS SHOWN DRAWN: AZ DESIGN: AC/AZ AS BUILT: D3 15 OF 22 SHEETS Appendix B: STPUD — TRPA Memorandum of Understanding SIERRA ECOTONE SOUITIONS 1UU yfl_...__ �. F�KEE� InEl M� M AMENWEHT �% MOD �"�N �Cmt 01�4v�oft pin� A�� t� AW�l W l�r mW� Q�klj as � Q� M�� M�W�M"Ms �mm n ��n �wM W Wk 3 3 M tnFFFOrFAsm " Appendix C: Biological Species Lists (CNDDB, CNPS, USFWS) SIERRA ECOTONE SOLLRIONS 101 ;1 U.S. Fish and Wildlife Service National Wetlands Inventor � I 1 II 1' 50 t I i ~ $ho Air � I R � 1:27,274 0 0.225 0.45 0.9 mi 0 0.375 r 0.75 j -11 11_� 1.5 km VG Pioneer Trail Waterline Improvements Proj( Gold n Bear 7rl 7 sa 1 0 6 a, L A K E A L L Y W January 18, 2022 Wetlands ❑ Freshwater Emergent Wetland Lake Estuarine and Marine Deepwater I i Freshwater Forested/Shrub Wetland ❑ Other Estuarine and Marine Wetland C Freshwater Pond ❑ Riverine l� Wildlife Service, National Standards and Support Team, n@fws.gov 1 This map is for general reference only. The US Fish and Wildlife Service is not responsible for the accuracy or currentness of the base data shown on this map. All wetlands related data should be used in accordance with the layer metadata found on the Wetlands Mapper web site. National Wetlands Inventory (NWI) This page was produced by the NWI mapper United States Department of the Interior FISH AND WILDLIFE SERVICE Reno Fish And Wildlife Office 1340 Financial Boulevard, Suite 234 Reno, NV 89502-7147 Phone: (775) 861-6300 Fax: (775) 861-6301 htlp://www.fws.gov/reno/ In Reply Refer To: Consultation Code: 08ENVD00-2022-SLI-0154 s ..r. r�wib wuanarr. kl'7r\'N'K January 17, 2022 Event Code: 08ENVD00-2022-E-00398 Project Name: South Tahoe Public Utility District - Pioneer Trail Waterline and Facilities Upgrade Project Subject: List of threatened and endangered species that may occur in your proposed project location or may be affected by your proposed project To Whom It May Concern: The attached species list indicates threatened, endangered, proposed, and candidate species and designated or proposed critical habitat that may occur within the boundary of your proposed project and/or maybe affected by your proposed project. The species list fulfills the requirements of the U.S. Fish and Wildlife Service (Service) under section 7(c) of the Endangered Species Act of 1973, as amended (ESA, 16 U.S.C. 1531 et seq.), for projects that are authorized, funded, or carried out by a Federal agency. Candidate species have no protection under the ESA but are included for consideration because they could be listed prior to the completion of your project. Consideration of these species during project planning may assist species conservation efforts and may prevent the need for future listing actions. For additional information regarding species that may be found in the proposed project area, visit http:// www.fws.gov/nevada/es/l*pac.html. The purpose of the ESA is to provide a means whereby threatened and endangered species and the ecosystems upon which they depend may be conserved. Under sections 7(a)(1) and 7(a)(2) of the ESA and its implementing regulations (50 CFR 402 et seq.), Federal agencies are required to utilize their authorities to carry out programs for the conservation of threatened and endangered species and to determine whether projects may affect threatened and endangered species and/or designated critical habitat. A Biological Assessment is required for construction projects that are major Federal actions significantly affecting the quality of the human environment as defined in the National Environmental Policy Act (42 U.S.C. 4332(2) (c)). For projects other than major construction activities, the Service suggests that a biological evaluation similar to a Biological Assessment be prepared to determine whether the project may affect listed or proposed species and/or 01/17/2022 Event Code: 08ENVD00-2022-E-00398 designated or proposed critical habitat. Guidelines for preparing a Biological Assessment can be found at: http://www.fws.gov/midwest/endangered/section71ba guide.html. If a Federal action agency determines, based on the Biological Assessment or biological evaluation, that listed species and/or designated critical habitat may be affected by the proposed project, the agency is required to consult with the Service pursuant to 50 CFR 402. In addition, the Service recommends that candidate species, proposed species, and proposed critical habitat be addressed within the consultation. More information on the regulations and procedures for section 7 consultation, including the role of permit or license applicants, can be found in the "Endangered Species Consultation Handbook" at: http://www.fws.gov/endangered/esa-library/pdf/TOC-GLOS.PDF. New information based on updated surveys, changes in the abundance and distribution of species, changed habitat conditions, or other factors could change this species list. Please feel free to contact us if you need more current information or assistance regarding the potential impacts to federally listed, proposed, and candidate species and federally designated and proposed critical habitat. Please note that under 50 CFR 402.12(e) of the regulations implementing section 7 of the ESA, the accuracy of this species list should be verified after 90 days. This verification can be completed formally or informally, as desired. The Service recommends that verification be completed by visiting the ECOS-IPaC website at regular intervals during project planning and implementation, for updates to species lists and information. An updated list may be requested through the ECOS-IPaC system by completing the same process used to receive the attached list. The Nevada Fish and Wildlife Office (NFWO) no longer provides species of concern lists. Most of these species for which we have concern are also on the Animal and Plant At -Risk Tracking List for Nevada (At -Risk list) maintained by the State of Nevada's Natural Heritage Program (Heritage). Instead of maintaining our own list, we adopted Heritage's At -Risk list and are partnering with them to provide distribution data and information on the conservation needs for at -risk species to agencies or project proponents. The mission of Heritage is to continually evaluate the conservation priorities of native plants, animals, and their habitats, particularly those most vulnerable to extinction or in serious decline. In addition, in order to avoid future conflicts, we ask that you consider these at -risk species early in your project planning and explore management alternatives that provide for their long-term conservation. For a list of at -risk species by county, visit Heritage's website (http://heritage.nv.gov). For a specific list of at -risk species that may occur in the project area, you can obtain a data request form from the website (http://heritage.nv.gov/get data) or by contacting the Administrator of Heritage at 901 South Stewart Street, Suite 5002, Carson City, Nevada 89701-5245, (775) 684-2900. Please indicate on the form that your request is being obtained as part of your coordination with the Service under the ESA. During your project analysis, if you obtain new information or data for any Nevada sensitive species, we request that you provide the information to Heritage at the above address. Furthermore, certain species of fish and wildlife are classified as protected by the State of Nevada (http://www.leg.state.nv.us/NAC/NAC-503.html). You must first obtain the appropriate license, permit, or written authorization from the Nevada Department of Wildlife (NDOW) to 01/17/2022 Event Code: 08ENVD00-2022-E-00398 3 take, or possess any parts of protected fish and wildlife species. Please visit http:// www.ndow.org or contact NDOW in northern Nevada (775) 688-1500, in southern Nevada (702) 486-5127, or in eastern Nevada (775) 777-2300. Please be aware that bald and golden eagles are protected under the Bald and Golden Eagle Protection Act (16 U.S.C. 668 et seq.), and projects affecting these species may require development of an eagle conservation plan (http://www.fws.gov/windenergy/eagle guidance.html). Additionally, wind energy projects should follow the Service's wind energy guidelines (http://www.fws.gov/windenerge) for minimizing impacts to migratory birds and bats. The Service's Pacific Southwest Region developed the Interim Guidelines for the Development of a Project Specific Avian and Bat Protection Plan for Wind Energy Facilities (Interim Guidelines). This document provides energy facility developers with a tool for assessing the risk of potential impacts to wildlife resources and delineates how best to design and operate a bird - and bat -friendly wind facility. These Interim Guidelines are available upon request from the NFWO. The intent of a Bird and Bat Conservation Strategy is to conserve wildlife resources while supporting project developers through: (1) establishing project development in an adaptive management framework; (2) identifying proper siting and project design strategies; (3) designing and implementing pre -construction surveys; (4) implementing appropriate conservation measures for each development phase; (5) designing and implementing appropriate post -construction monitoring strategies; (6) using post -construction studies to better understand the dynamics of mortality reduction (e.g., changes in blade cut -in speed, assessments of blade "feathering" success, and studies on the effects of visual and acoustic deterrents) including efforts tied into Before-After/Control-Impact analysis; and (7) conducting a thorough risk assessment and validation leading to adjustments in management and mitigation actions. The template and recommendations set forth in the Interim Guidelines were based upon the Avian Powerline Interaction Committee's Avian Protection Plan template (http://www.aplic.or/) developed for electric utilities and modified accordingly to address the unique concerns of wind energy facilities. These recommendations are also consistent with the Service's wind energy guidelines. We recommend contacting us as early as possible in the planning process to discuss the need and process for developing a site -specific Bird and Bat Conservation Strategy. The Service has also developed guidance regarding wind power development in relation to prairie grouse leks (sage -grouse are included in this). This document can be found at: http:// www.fws.gov/southwest/es/Oklahoma/documents/te species/wind%20power/ prairie%20grouse%201ek%205%20mile%20public.pdf. Migratory Birds are a Service Trust Resource. Based on the Service's conservation responsibilities and management authority for migratory birds under the Migratory Bird Treaty Act of 1918, as amended (MBTA; 16 U.S.C. 703 et seq.), we recommend that any land clearing or other surface disturbance associated with proposed actions within the project area be timed to avoid potential destruction of bird nests or young, or birds that breed in the area. Such destruction may be in violation of the MBTA. Under the MBTA, nests with eggs or young of migratory birds may not be harmed, nor may migratory birds be killed. Therefore, we recommend land clearing be conducted outside the avian breeding season. If this is not feasible, 01/17/2022 Event Code: 08ENVD00-2022-E-00398 4 we recommend a qualified biologist survey the area prior to land clearing. If nests are located, or if other evidence of nesting (i.e., mated pairs, territorial defense, carrying nesting material, transporting food) is observed, a protective buffer (the size depending on the habitat requirements of the species) should be delineated and the entire area avoided to prevent destruction or disturbance to nests until they are no longer active. Guidance for minimizing impacts to migratory birds for projects involving communications towers (e.g., cellular, digital television, radio, and emergency broadcast) can be found at: http:// www.fws.gov/migrator birds/CurrentBirdlssues/Hazards/towers/towers.htm; http:// www.towerkill.com; and http:// www.fws.gov/migrator birds/CurrentBirdlssues/Hazards/towers/comtow.html. If wetlands, springs, or streams are are known to occur in the project area or are present in the vicinity of the project area, we ask that you be aware of potential impacts project activities may have on these habitats. Discharge of fill material into wetlands or waters of the United States is regulated by the U.S. Army Corps of Engineers (ACOE) pursuant to section 404 of the Clean Water Act of 1972, as amended. We recommend you contact the ACOE's Regulatory Section regarding the possible need for a permit. For projects located in northern Nevada (Carson City, Churchill, Douglas, Elko, Esmeralda, Eureka, Humboldt, Lander, Lyon, Mineral, Pershing, Storey, and Washoe Counties) contact the Reno Regulatory Office at 300 Booth Street, Room 3060, Reno, Nevada 89509, (775) 784-5304; in southern Nevada (Clark, Lincoln, Nye, and White Pine Counties) contact the St. George Regulatory Office at 321 North Mall Drive, Suite L-101, St. George, Utah 84790-7314, (435) 986-3979; or in California along the eastern Sierra contact the Sacramento Regulatory Office at 650 Capitol Mall, Suite 5-200, Sacramento, California 95814, (916) 557-5250. We appreciate your concern for threatened and endangered species. Please include the Consultation Tracking Number in the header of this letter with any request for consultation or correspondence about your project that you submit to our office. The table below outlines lead FWS field offices by county and land ownership/project type. Please refer to this table when you are ready to coordinate (including requests for section 7 consultation) with the field office corresponding to your project, and send any documentation regarding your project to that corresponding office. Therefore, the lead FWS field office may not be the office listed above in the letterhead. Lead FWS offices by County and Ownership/Program County Ownership/Program Species Office Lead* Alameda Tidal wetlands/marsh adjacent to Salt marsh BDFWO Bays species, delta smelt Alameda All ownerships but tidal/estuarine All SFWO Alpine Humboldt Toiyabe National All RFWO Forest 01/17/2022 Event Code: 08ENVD00-2022-E-00398 5 Alpine Lake Tahoe Basin Management All RFWO Unit Alpine Stanislaus National Forest All SFWO Alpine El Dorado National Forest All SFWO Colusa Mendocino National Forest All AFWO Colusa Other All By jurisdiction (see map) Contra Costa Legal Delta (Excluding All BDFWO ECCHCP) Contra Costa Antioch Dunes NWR All BDFWO Contra Costa Tidal wetlands/marsh adjacent to Salt marsh BDFWO Bays species, delta smelt Contra Costa All ownerships but tidal/estuarine All SFWO Del Norte All All AFWO El Dorado El Dorado National Forest All SFWO El Dorado LakeTahoe Basin Management RFWO Unit Glenn Mendocino National Forest All AFWO Glenn Other All By jurisdiction (see map) All except Shasta Trinity National All AFWO Forest Humboldt Humboldt Shasta Trinity National Forest All YFWO Lake Mendocino National Forest All AFWO Lake Other All By jurisdiction (see map) Lassen Modoc National Forest All KFWO Lassen Lassen National Forest All SFWO Lassen Toiyabe National Forest All RFWO Lassen BLM Surprise and Eagle Lake All RFWO Resource Areas 01/17/2022 Event Code: 08ENVD00-2022-E-00398 6 Lassen BLM Alturas Resource Area All KFWO Lassen Lassen Volcanic National Park All (includes SFWO Eagle Lake trout on all ownerships) Lassen All other ownerships All By jurisdiction (see map) Marin Tidal wetlands/marsh adjacent to Salt marsh BDFWO Bays species, delta smelt Marin All ownerships but tidal/estuarine All SFWO Mendocino Russian River watershed All SFWO Mendocino All except Russian River All AFWO watershed Modoc Modoc National Forest All KFWO Modoc BLM Alturas Resource Area All KFWO Modoc Klamath Basin National Wildlife All KFWO Refuge Complex Modoc BLM Surprise and Eagle Lake All RFWO Resource Areas Modoc All other ownerships All By jurisdiction (See map) Mono Inyo National Forest All RFWO Mono Humboldt Toiyabe National All RFWO Forest All ownerships but tidal/estuarine All SFWO Napa Napa Tidal wetlands/marsh adjacent to Salt marsh BDFWO San Pablo Bay species, delta smelt Nevada Humboldt Toiyabe National All RFWO Forest Nevada All other ownerships All By jurisdiction (See map) 01/17/2022 Event Code: 08ENVD00-2022-E-00398 Lake Tahoe Basin Management All RFWO Unit Placer Placer All other ownerships All SFWO Sacramento Legal Delta Delta Smelt BDFWO Sacramento Other All By jurisdiction (see map) San Francisco Tidal wetlands/marsh adjacent to Salt marsh BDFWO San Francisco Bay species, delta smelt San Francisco All ownerships but tidal/estuarine All SFWO San Mateo Tidal wetlands/marsh adjacent to Salt marsh BDFWO San Francisco Bay species, delta smelt San Mateo All ownerships but tidal/estuarine All SFWO San Joaquin Legal Delta excluding San All BDFWO Joaquin HCP San Joaquin Other All SFWO Santa Clara Tidal wetlands/marsh adjacent to Salt marsh BDFWO San Francisco Bay species, delta smelt Santa Clara All ownerships but tidal/estuarine All SFWO Shasta Shasta Trinity National Forest All YFWO except Hat Creek Ranger District (administered by Lassen National Forest) Shasta Hat Creek Ranger District All SFWO Shasta Bureau of Reclamation (Central All BDFWO Valley Project) Shasta Whiskeytown National Recreation All YFWO Area 01/17/2022 Event Code: 08ENVD00-2022-E-00398 Shasta BLM Alturas Resource Area All KFWO Shasta Caltrans By jurisdiction SFWO/AFWO Shasta Ahjumawi Lava Springs State Shasta SFWO Park crayfish Shasta All other ownerships All By jurisdiction (see map) Shasta Natural Resource Damage All SFWO/BDFWO Assessment, all lands Sierra Humboldt Toiyabe National All RFWO Forest Sierra All other ownerships All SFWO Siskiyou Klamath National Forest (except All YFWO Ukonom District) Siskiyou Six Rivers National Forest and All AFWO Ukonom District Siskiyou Shasta Trinity National Forest All YFWO Siskiyou Lassen National Forest All SFWO Siskiyou Modoc National Forest All KFWO Siskiyou Lava Beds National Volcanic All KFWO Monument Siskiyou BLM Alturas Resource Area All KFWO Siskiyou Klamath Basin National Wildlife All KFWO Refuge Complex Siskiyou All other ownerships All By jurisdiction (see map) Solano Suisun Marsh All BDFWO Solano Tidal wetlands/marsh adjacent to Salt marsh BDFWO San Pablo Bay species, delta smelt Solano All ownerships but tidal/estuarine All SFWO Solano Other All By jurisdiction (see map) 01/17/2022 Event Code: 08ENVD00-2022-E-00398 Sonoma Tidal wetlands/marsh adjacent to Salt marsh BDFWO San Pablo Bay species, delta smelt Sonoma All ownerships but tidal/estuarine All SFWO Tehama Mendocino National Forest All AFWO Tehama Shasta Trinity National Forest All YFWO except Hat Creek Ranger District (administered by Lassen National Forest) Tehama All other ownerships All By jurisdiction (see map) Trinity BLM All AFWO Trinity Six Rivers National Forest All AFWO Trinity Shasta Trinity National Forest All YFWO Trinity Mendocino National Forest All AFWO Trinity BIA (Tribal Trust Lands) All AFWO Trinity County Government All AFWO Trinity All other ownerships All By jurisdiction (See map) Yolo Yolo Bypass All BDFWO Yolo Other All By jurisdiction (see map) All FERC-ESA All By jurisdiction (see map) All FERC-ESA Shasta SFWO crayfish All FERC-Relicensing (non -ESA) All BDFWO *Office Leads: AFWO=Arcata Fish and Wildlife Office 01/17/2022 Event Code: 08ENVD00-2022-E-00398 10 BDFWO=Bay Delta Fish and Wildlife Office KFWO=Klamath Falls Fish and Wildlife Office RFWO=Reno Fish and Wildlife Office YFWO=Yreka Fish and Wildlife Office Attachment(s): • Official Species List • USFWS National Wildlife Refuges and Fish Hatcheries • Migratory Birds ■ Wetlands 01/17/2022 Event Code: 08ENVD00-2022-E-00398 Official Species List This list is provided pursuant to Section 7 of the Endangered Species Act, and fulfills the requirement for Federal agencies to "request of the Secretary of the Interior information whether any species which is listed or proposed to be listed may be present in the area of a proposed action". This species list is provided by: Reno Fish And Wildlife Office 1340 Financial Boulevard, Suite 234 Reno, NV 89502-7147 (775) 861-6300 01/17/2022 Event Code: 08ENVD00-2022-E-00398 2 Project Summary Consultation Code: 08ENVD00-2022-SLI-0154 Event Code: Some(08ENVD00-2022-E-00398) Project Name: South Tahoe Public Utility District - Pioneer Trail Waterline and Facilities Upgrade Project Project Type: WATER SUPPLY / DELIVERY Project Description: STPUD is to replace and upgrade existing waterlines in the right-of-way of Pioneer Trail and install pressure reducing valves for residential water distribution lines in South Lake Tahoe, CA. A total of 1.5 miles of new water line will be installed to allow for redundancy in water distribution and to increase fire -flows to the adjacent residential areas. Project implementation will occur over the course of one year likely in 2023. Project Location: Approximate location of the project can be viewed in Google Maps: https: www.google.com/maps/038.8950402,-119.9721520603801,14z rL m- _ � f — i ■ ■ r r ■ r F elm� ,r P Counties: El Dorado County, California 01/17/2022 Event Code: 08ENVD00-2022-E-00398 3 Endangered Species Act Species There is a total of 4 threatened, endangered, or candidate species on this species list. Species on this list should be considered in an effects analysis for your project and could include species that exist in another geographic area. For example, certain fish may appear on the species list because a project could affect downstream species. IPaC does not display listed species or critical habitats under the sole jurisdiction of NOAA Fisheries1, as USFWS does not have the authority to speak on behalf of NOAA and the Department of Commerce. See the "Critical habitats" section below for those critical habitats that lie wholly or partially within your project area under this office's jurisdiction. Please contact the designated FWS office if you have questions. NOAA Fisheries, also known as the National Marine Fisheries Service (NMFS), is an office of the National Oceanic and Atmospheric Administration within the Department of Commerce. Amphibians NAME Sierra Nevada Yellow -legged Frog Rana sierrae Endangered There is final critical habitat for this species. The location of the critical habitat is not available. Species profile: https:Hecos.fws.gov/ecp/species/9529 Fishes NAME Lahontan Cutthroat Trout Oncorhynchus clarkii henshawi No critical habitat has been designated for this species. Species profile: https:Hecos.fws.gov/ecp/species/3964 Insects NAME Monarch Butterfly Danaus plexippus No critical habitat has been designated for this species. Species profile: https:Hecos.fws.gov/ecp/species/9743 Conifers and Cycads NAME Whitebark Pine Pinus albicaulis No critical habitat has been designated for this species. Species profile: https://ecos.fws.gov/ecp/species/1748 STATUS Threatened STATUS Candidate STATUS Proposed Threatened 01/17/2022 Event Code: 08ENVD00-2022-E-00398 Critical habitats THERE ARE NO CRITICAL HABITATS WITHIN YOUR PROJECT AREA UNDER THIS OFFICE'S JURISDICTION. 01/17/2022 Event Code: 08ENVD00-2022-E-00398 USFWS National Wildlife Refuge Lands And Fish Hatcheries Any activity proposed on lands managed by the National Wildlife Refuge system must undergo a 'Compatibility Determination' conducted by the Refuge. Please contact the individual Refuges to discuss any questions or concerns. THERE ARE NO REFUGE LANDS OR FISH HATCHERIES WITHIN YOUR PROJECT AREA. 01/17/2022 Event Code: 08ENVD00-2022-E-00398 Migratory Birds Certain birds are protected under the Migratory Bird Treaty Act! and the Bald and Golden Eagle Protection Act2. Any person or organization who plans or conducts activities that may result in impacts to migratory birds, eagles, and their habitats should follow appropriate regulations and consider implementing appropriate conservation measures, as described below. 1. The Migratory Birds Treaty Act of 1918. 2. The Bald and Golden Eagle Protection Act of 1940. 3. 50 C.F.R. Sec. 10.12 and 16 U.S.C. Sec. 668(a) The birds listed below are birds of particular concern either because they occur on the USFWS Birds of Conservation Concern (BCC) list or warrant special attention in your project location. To learn more about the levels of concern for birds on your list and how this list is generated, see the FAQ below. This is not a list of every bird you may find in this location, nor a guarantee that every bird on this list will be found in your project area. To see exact locations of where birders and the general public have sighted birds in and around your project area, visit the E-bird data mapping tool (Tip: enter your location, desired date range and a species on your list). For projects that occur off the Atlantic Coast, additional maps and models detailing the relative occurrence and abundance of bird species on your list are available. Links to additional information about Atlantic Coast birds, and other important information about your migratory bird list, including how to properly interpret and use your migratory bird report, can be found below. For guidance on when to schedule activities or implement avoidance and minimization measures to reduce impacts to migratory birds on your list, click on the PROBABILITY OF PRESENCE SUMMARY at the top of your list to see when these birds are most likely to be present and breeding in your project area. BREEDING NAME SEASON Bald Eagle Haliaeetus leucocephalus Breeds Jan 1 to This is not a Bird of Conservation Concern (BCC) in this area, but warrants attention Aug 31 because of the Eagle Act or for potential susceptibilities in offshore areas from certain types of development or activities. htWs:Hecos.fws.gov/ecp/species/1626 Black -throated Gray Warbler Dendroica nigrescens Breeds May 1 This is a Bird of Conservation Concern (BCC) only in particular Bird Conservation Regions to Jul 20 (BCRs) in the continental USA 01/17/2022 Event Code: 08ENVD00-2022-E-00398 2 BREEDING NAME SEASON Cassin's Finch Carpodacus cassinn Breeds May 15 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA to Jul 15 and Alaska. https://ecos.fws.gov/ecp/species/9462 Clark's Grebe Aechmophorus clarkii Breeds Jun 1 to This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA Aug 31 and Alaska. Evening Grosbeak Coccothraustes vespertinus Breeds May 15 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA to Aug 10 and Alaska. Golden Eagle Aquila chrysaetos Breeds Dec 1 This is not a Bird of Conservation Concern (BCC) in this area, but warrants attention to Aug 31 because of the Eagle Act or for potential susceptibilities in offshore areas from certain types of development or activities. https://ecos.fws.gov/ecp/species/1680 Long-eared Owl asio otus Breeds Mar 1 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA to Jul 15 and Alaska. https://ecos.fws.gov/ecp/species/3631 Olive -sided Flycatcher Contopus cooperi Breeds May 20 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA to Aug 31 and Alaska. hqps:Hecos.fws.gov/ecp/species/3914 Willet Tringa semipalmata Breeds Apr 20 This is a Bird of Conservation Concern (BCC) throughout its range in the continental USA to Aug 5 and Alaska. Probability Of Presence Summary The graphs below provide our best understanding of when birds of concern are most likely to be present in your project area. This information can be used to tailor and schedule your project activities to avoid or minimize impacts to birds. Please make sure you read and understand the FAQ "Proper Interpretation and Use of Your Migratory Bird Report" before using or attempting to interpret this report. Probability of Presence (■) Each green bar represents the bird's relative probability of presence in the 10km grid cell(s) your project overlaps during a particular week of the year. (A year is represented as 12 4-week months.) A taller bar indicates a higher probability of species presence. The survey effort (see below) can be used to establish a level of confidence in the presence score. One can have higher confidence in the presence score if the corresponding survey effort is also high. 01/17/2022 Event Code: 08ENVD00-2022-E-00398 3 How is the probability of presence score calculated? The calculation is done in three steps: The probability of presence for each week is calculated as the number of survey events in the week where the species was detected divided by the total number of survey events for that week. For example, if in week 12 there were 20 survey events and the Spotted Towhee was found in 5 of them, the probability of presence of the Spotted Towhee in week 12 is 0.25. 2. To properly present the pattern of presence across the year, the relative probability of presence is calculated. This is the probability of presence divided by the maximum probability of presence across all weeks. For example, imagine the probability of presence in week 20 for the Spotted Towhee is 0.05, and that the probability of presence at week 12 (0.25) is the maximum of any week of the year. The relative probability of presence on week 12 is 0.25/0.25 = 1; at week 20 it is 0.05/0.25 = 0.2. 3. The relative probability of presence calculated in the previous step undergoes a statistical conversion so that all possible values fall between 0 and 10, inclusive. This is the probability of presence score. Breeding Season( ) Yellow bars denote a very liberal estimate of the time -frame inside which the bird breeds across its entire range. If there are no yellow bars shown for a bird, it does not breed in your project area. Survey Effort (1) Vertical black lines superimposed on probability of presence bars indicate the number of surveys performed for that species in the 10km grid cell(s) your project area overlaps. The number of surveys is expressed as a range, for example, 33 to 64 surveys. No Data (—) A week is marked as having no data if there were no survey events for that week. Survey Timeframe Surveys from only the last 10 years are used in order to ensure delivery of currently relevant information. The exception to this is areas off the Atlantic coast, where bird returns are based on all years of available data, since data in these areas is currently much more sparse. ■ probability of presence breeding season I survey effort — no data SPECIES JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Bald Ea Non-BCCe 11h fill Jill Jill Jill lid Jill Jill ++1+ 1-1-111111-1 Vulnerable Black -throated Jill 1111 "'+ ++, Gray Warbler ++�� +--- —+++ +—�+ + +'++ +++� ��+ +--+ BCC - BCR ONE 01/17/2022 Event Code: 08ENVD00-2022-E-00398 4 Cassin's Finch ' ' '' ' ' �' Jill" 1� 1 ' BCC Rangewide (CON) ` +� +--- — + — + —� +++ +++ ++++ +++� +-- Clark's Grebe ++�� +--- —+++ ——� ++++ ++' BCC Rangewide (CON) Evening Grosbeak '' 1 111111 �" " ' BCC Rangewide ++— — +--- —'+" + — „ „+ ++ ++'+ +++� --- +A (CON) 4— --- Non-BCC on BC gle Jill Jill III,,- ±__� Jill Jill Jill Jill ++++ +++� ��+ Jill Vul Owl BCC Rangewide +--- + ++++ ++++'++— �� + +--+ (CON) Olive -sided Flycatcher ++-- +--- —+++ 4-4- ++++ +++— ---+ +--+ BCC Rangewide (CON) walletIIJillBCC Rangewide ++— — +--- —+++ +— F11T +1 +1 1 ++1 ++++ +++— + +--+ (CON) Additional information can be found using the following links: ■ Birds of Conservation Concern http://www.fws.gov/birds/management/managed-species/ birds-of-conservation-concern.php • Measures for avoiding and minimizing impacts to birds http://www.fws.gov/birds/ management/project-assessment-tools-and-guidance/ conservation-measures.php ■ Nationwide conservation measures for birds http://www.fws.gov/migratorybirds/pdf/ management/nationwidestandardconservationmeasures.pdf Migratory Birds FAQ Tell me more about conservation measures I can implement to avoid or minimize impacts to migratory birds. Nationwide Conservation Measures describes measures that can help avoid and minimize impacts to all birds at any location year round. Implementation of these measures is particularly important when birds are most likely to occur in the project area. When birds may be breeding in the area, identifying the locations of any active nests and avoiding their destruction is a very helpful impact minimization measure. To see when birds are most likely to occur and be breeding in your project area, view the Probability of Presence Summary. Additional measures or permits may be advisable depending on the type of activity you are conducting and the type of infrastructure or bird species present on your project site. What does IPaC use to generate the migratory birds potentially occurring in my specified location? 01/17/2022 Event Code: 08ENVD00-2022-E-00398 5 The Migratory Bird Resource List is comprised of USFWS Birds of Conservation Concern (BCQ and other species that may warrant special attention in your project location. The migratory bird list generated for your project is derived from data provided by the Avian Knowledge Network (AKN). The AKN data is based on a growing collection of survey, banding, and citizen science datasets and is queried and filtered to return a list of those birds reported as occurring in the 10km grid cell(s) which your project intersects, and that have been identified as warranting special attention because they are a BCC species in that area, an eagle (Eagle Act requirements may apply), or a species that has a particular vulnerability to offshore activities or development. Again, the Migratory Bird Resource list includes only a subset of birds that may occur in your project area. It is not representative of all birds that may occur in your project area. To get a list of all birds potentially present in your project area, please visit the AKN Phenology Tool. What does IPaC use to generate the probability of presence graphs for the migratory birds potentially occurring in my specified location? The probability of presence graphs associated with your migratory bird list are based on data provided by the Avian Knowledge Network (AKN). This data is derived from a growing collection of survey, banding, and citizen science datasets . Probability of presence data is continuously being updated as new and better information becomes available. To learn more about how the probability of presence graphs are produced and how to interpret them, go the Probability of Presence Summary and then click on the "Tell me about these graphs" link. How do I know if a bird is breeding, wintering, migrating or present year-round in my project area? To see what part of a particular bird's range your project area falls within (i.e. breeding, wintering, migrating or year-round), you may refer to the following resources: The Cornell Lab of Ornithology All About Birds Bird Guide, or (if you are unsuccessful in locating the bird of interest there), the Cornell Lab of Ornithology Neotropical Birds guide. If a bird on your migratory bird species list has a breeding season associated with it, if that bird does occur in your project area, there may be nests present at some point within the timeframe specified. If "Breeds elsewhere" is indicated, then the bird likely does not breed in your project area. What are the levels of concern for migratory birds? Migratory birds delivered through IPaC fall into the following distinct categories of concern: 1. "BCC Rangewide" birds are Birds of Conservation Concern (BCC) that are of concern throughout their range anywhere within the USA (including Hawaii, the Pacific Islands, Puerto Rico, and the Virgin Islands); 2. "BCC - BCR" birds are BCCs that are of concern only in particular Bird Conservation Regions (BCRs) in the continental USA; and 3. "Non -BCC - Vulnerable" birds are not BCC species in your project area, but appear on your list either because of the Eagle Act requirements (for eagles) or (for non -eagles) 01/17/2022 Event Code: 08ENVD00-2022-E-00398 potential susceptibilities in offshore areas from certain types of development or activities (e.g. offshore energy development or longline fishing). Although it is important to try to avoid and minimize impacts to all birds, efforts should be made, in particular, to avoid and minimize impacts to the birds on this list, especially eagles and BCC species of rangewide concern. For more information on conservation measures you can implement to help avoid and minimize migratory bird impacts and requirements for eagles, please see the FAQs for these topics. Details about birds that are potentially affected by offshore projects For additional details about the relative occurrence and abundance of both individual bird species and groups of bird species within your project area off the Atlantic Coast, please visit the Northeast Ocean Data Portal. The Portal also offers data and information about other taxa besides birds that may be helpful to you in your project review. Alternately, you may download the bird model results files underlying the portal maps through the NOAA NCCOS Integrative Statistical Modeling and Predictive Mapping of Marine Bird Distributions and Abundance on the Atlantic Outer Continental Shelf project webpage. Bird tracking data can also provide additional details about occurrence and habitat use throughout the year, including migration. Models relying on survey data may not include this information. For additional information on marine bird tracking data, see the Diving Bird Study and the nanotag studies or contact Caleb Spiegel or Pam Lorin. What if I have eagles on my list? If your project has the potential to disturb or kill eagles, you may need to obtain a permit to avoid violating the Eagle Act should such impacts occur. Proper Interpretation and Use of Your Migratory Bird Report The migratory bird list generated is not a list of all birds in your project area, only a subset of birds of priority concern. To learn more about how your list is generated, and see options for identifying what other birds may be in your project area, please see the FAQ "What does IPaC use to generate the migratory birds potentially occurring in my specified location". Please be aware this report provides the "probability of presence" of birds within the 10 km grid cell(s) that overlap your project; not your exact project footprint. On the graphs provided, please also look carefully at the survey effort (indicated by the black vertical bar) and for the existence of the "no data" indicator (a red horizontal bar). A high survey effort is the key component. If the survey effort is high, then the probability of presence score can be viewed as more dependable. In contrast, a low survey effort bar or no data bar means a lack of data and, therefore, a lack of certainty about presence of the species. This list is not perfect; it is simply a starting point for identifying what birds of concern have the potential to be in your project area, when they might be there, and if they might be breeding (which means nests might be present). The list helps you know what to look for to confirm presence, and helps guide you in knowing when to implement conservation measures to avoid or minimize potential impacts from your project activities, should presence be confirmed. To learn more about conservation measures, visit the FAQ "Tell me about conservation measures I can implement to avoid or minimize impacts to migratory birds" at the bottom of your migratory bird trust resources page. 01/17/2022 Event Code: 08ENVD00-2022-E-00398 Wetlands Impacts to NWI wetlands and other aquatic habitats may be subject to regulation under Section 404 of the Clean Water Act, or other State/Federal statutes. For more information please contact the Regulatory Program of the local U.S. Army Corps of Engineers District. Please note that the NWI data being shown may be out of date. We are currently working to update our NWI data set. We recommend you verify these results with a site visit to determine the actual extent of wetlands on site. WETLAND INFORMATION WAS NOT AVAILABLE WHEN THIS SPECIES LIST WAS GENERATED. PLEASE VISIT HTTPS://WWW.FWS.GOV/WETLANDS/DATA/MAPPER.HTML OR CONTACT THE FIELD OFFICE FOR FURTHER INFORMATION. Multiple Occurrences per Page California Department of Fish and Wildlife California Natural Diversity Database Ill1'i'ItS�� Query Criteria: Quad IS (South Lake Tahoe (3811988)) AND (Federal Listing Status IS dspan>(Endangered OR Threatened OR Proposed Endangered OR Proposed Threatened OR dspan>Candidate OR Delisted) OR dspan>State Listing Status IS (Endangered OR Threatened OR dspan>Rare OR Delisted OR dspan>Candidate Endangered OR Candidate Threatened)) Rana sierrae Element Code: AAABH01340 Sierra Nevada yellow -legged frog Listing Status: Federal: Endangered CNDDB Element Ranks: Global: G1 State: Threatened State: S1 Other: CDFW_WL-Watch List, IUCN_EN-Endangered, USFS_S-Sensitive Habitat: General: ALWAYS ENCOUNTERED WITHIN A FEW FEET OF WATER. TADPOLES MAY REQUIRE 2 - 4 YRS TO COMPLETE THEIR AQUATIC DEVELOPMENT. Micro: u Occurrence No. 243 Map Index: 70205 EO Index: 71086 Element Last Seen: 1935-08-18 Occ. Rank: Unknown Presence: Presumed Extant Site Last Seen: 1935-08-18 Occ. Type: Natural/Native occurrence Trend: Unknown Record Last Updated: 2014-12-18 Quad Summary: Woodfords (3811977), Freel Peak (3811978), Minden (3811987), South Lake Tahoe (3811988) County Summary: Alpine, El Dorado Lat/Long: 38.87994 /-119.88147 Accuracy: 4/5 mile UTM: Zone-11 N4307401 E250044 Elevation (ft): 9000 PLSS: T12N, R19E, Sec. 29 (M) Acres: 0.0 Location: 0.5 MILE NE OF STAR LAKE, SE OF LAKE TAHOE. Detailed Location: COLLECTION LOCALITY DESCRIBED AS "0.5 MI NE STAR LAKE" IN EL DORADO COUNTY. THE DRAINAGE NEAREST TO 0.5 MILE NE OF STAR LAKE IS THE HEAD OF STUTLER CANYON, JUST OVER THE COUNTY LINE INTO ALPINE COUNTY. UNCERTAIN IF NW WAS MEANT. Ecological: General: COLLECTION MADE BY R. SMITH ON 18 AUG 1935. Owner/Manager: USFS-TOIYABE NF Commercial Version -- Dated January, 1 2022 -- Biogeographic Data Branch Page 1 of 4 Report Printed on Tuesday, January 18, 2022 Information Expires 7/1/2022 Multiple Occurrences per Page California Department of Fish and Wildlife California Natural Diversity Database nzn Empidonax traillii willow flycatcher Listing Status: Federal: Habitat State: Other: General Micro: Element Code: ABPAE33040 None CNDDB Element Ranks: Global: G5 Endangered State: S1S2 IUCN_LC-Least Concern, USFS_S-Sensitive, USFWS_BCC-Birds of Conservation Concern INHABITS EXTENSIVE THICKETS OF LOW, DENSE WILLOWS ON EDGE OF WET MEADOWS, PONDS, OR BACKWATERS; 2000-8000 FT ELEVATION. REQUIRES DENSE WILLOW THICKETS FOR NESTING/ROOSTING. LOW, EXPOSED BRANCHES ARE USED FOR SINGING POSTS/HUNTING PERCHES. Occurrence No. 124 Map Index: 59165 EO Index: 59201 Element Last Seen: 1935-06-29 Occ. Rank: Unknown Presence: Presumed Extant Site Last Seen: 1935-06-29 Occ. Type: Natural/Native occurrence Trend: Unknown Record Last Updated: 2005-01-07 Quad Summary: South Lake Tahoe (3811988) County Summary: El Dorado Lat/Long: 38.91453 /-119.97244 Accuracy: non-specific area UTM: Zone-11 N4311493 E242276 Elevation (ft): 6250 PLSS: T12N, R18E, Sec. 03 (M) Acres: 135.3 Location: VICINITY OF TROUT CREEK IN LAKE VALLEY NEAR SIERRA HOUSE. Detailed Location: 11 EGG SET COLLECTIONS FROM "LAKE VALLEY, NEAR SIERRA HOUSE" AND 1 EGG SET COLLECTION FROM 'TROUT CREEK, NEAR SIERRA HOUSE". Ecological: General: MVZ #9088 - #9099. ALL COLLECTIONS BY MILTON RAY. 3 COLLECTIONS FROM 30 JUN 1910, 3 FROM 1 JUL 1910. 4 COLLECTIONS FROM 26-28 JUN 1912. 1 COLLECTION FROM 5 JUL 1922 & 1 COLLECTION FROM 29 JUN 1935. Owner/Manager: UNKNOWN Rorippa subumbellata Element Code: PDBRA270MO Tahoe yellow cress Listing Status: Federal: None CNDDB Element Ranks: Global: G1 State: Endangered State: S1 Other: Rare Plant Rank - 1 B.1, SB_BerrySB-Berry Seed Bank, SB_CaIBG/RSABG-California/Rancho Santa Ana Botanic Garden, USFS_S-Sensitive Habitat: General: LOWER MONTANE CONIFEROUS FOREST, MEADOWS AND SEEPS. Micro: SANDY BEACHES, ON LAKESIDE MARGINS AND IN RIPARIAN COMMUNITIES; ON DECOMPOSED GRANITE SAND. 1895-2410 M. Commercial Version -- Dated January, 1 2022 -- Biogeographic Data Branch Page 2 of 4 Report Printed on Tuesday, January 18, 2022 Information Expires 7/1/2022 Multiple Occurrences per Page California Department of Fish and Wildlife Ill1'i'ItS�� California Natural Diversity Database Occurrence No. 1 Map Index: 14462 EO Index: 8257 Element Last Seen: 2017-09-28 Occ. Rank: Unknown Presence: Presumed Extant Site Last Seen: 2017-09-28 Occ. Type: Natural/Native occurrence Trend: Unknown Record Last Updated: 2021-04-08 Quad Summary: South Lake Tahoe (3811988) County Summary: El Dorado Lat/Long: 38.95461 /-119.95451 Accuracy: specific area UTM: Zone-11 N4315892 E243976 Elevation (ft): 6232 PLSS: T13N, R18E, Sec. 28, SE (M) Acres: 19.0 Location: FROM STATELINE SW TO BIJOU PARK, LAKE TAHOE. Detailed Location: OCCURRENCE EXTENDS UP INTO NV. INCLUDES EDGEWOOD SITE (PORTIONS OF THIS SITE IN NEVADA NOT MAPPED), TAHOE MEADOES SITE, AND BIJOU PARK SITE. MAPPED AS 3 POLYGONS ACCORDING TO A 1979 KNAPP MAP, 1981 FERREIRA MAP, AND 2017 TYC DIGITAL DATA. Ecological: IN BEACH SAND WITH PHACELIA FRIGIDA AND PHLOX SP. ALONG BEACH AND IN BANKS OF DITCH ENTERING LAKE. LAKE INUNDATED IN 1979 AND 1982. General: DETAILED POP INFO AVAILABLE AT CNDDB. PORTIONS OF SITE WERE SEEN IN 1979-1981, NO PLANTS IN 1982, SEEN IN 1990 & 1993, NO PLANTS IN 1994-1997, SEEN IN 1998-2009 AND 2017. INCLUDES FORMER EO #2 & #3. Owner/Manager: PVT Occurrence No. 4 Map Index: 14433 EO Index: 8255 Element Last Seen: 2015-06-09 Occ. Rank: Good Presence: Presumed Extant Site Last Seen: 2015-06-09 Occ. Type: Natural/Native occurrence Trend: Unknown Record Last Updated: 2017-09-21 Quad Summary: South Lake Tahoe (3811988) County Summary: El Dorado Lat/Long: 38.94771 /-119.96571 Accuracy: specific area UTM: Zone-11 N4315157 E242981 Elevation (ft): 6230 PLSS: T13N, R18E, Sec. 33, NW (M) Acres: 6.0 Location: TAHOE LAKESHORE LODGE, BETWEEN TIMBER COVE MARINA AND THE TAHOE MARINA INN, SOUTH LAKE TAHOE. Detailed Location: TIMBER COVE SITE. ON THE PROPERTY OF TAHOE LAKESHORE LODGE AND SPA, 930 BALBIJOU RD. 2013 OBSERVATION AT ELEVATION 6242' IS HIGHER THAN PREVIOUS POPULATIONS FOUND BETWEEN 6223' & 6230'; PLANTS TRANSPLANTED TO TYC MITIGATION SITE. Ecological: ON DECOMPOSED GRANITE BEACH WITH SCATTERING OF GRASSES AND FORBS. COARSE SAND. ASSOCIATED WITH ACHILLEA MILLEFOLIUM, CAREX DOUGLASII, CHAMOMILLA SUAVEOLENS, ERIOGONUM NUDUM, GAYOPHYTUM DIFFUSUM, LEYMUS TRITICOIDES, LUPINUS LEPIDUS, ETC. General: PLANTS SEEN IN 1981-1988 AND 1990, NO PLANTS FOUND IN 1993-2001, PLANTS SEEN IN 2002-2005, NO PLANTS IN 2006, PLANTS SEEN IN 2007-2009, 2013 (214 PLANTS) & 2015 (304 PLANTS). ADDITIONAL POPULATION INFORMATION IS AVAILABLE AT CNDDB. Owner/Manager: PVT Commercial Version -- Dated January, 1 2022 -- Biogeographic Data Branch Page 3 of 4 Report Printed on Tuesday, January 18, 2022 Information Expires 7/1/2022 Multiple Occurrences per Page California Department of Fish and Wildlife Ill1'i'ItS�� California Natural Diversity Database Occurrence No. 5 Map Index: 14397 EO Index: 8251 Element Last Seen: 2019-06-12 Occ. Rank: Good Presence: Presumed Extant Site Last Seen: 2019-06-12 Occ. Type: Natural/Native occurrence Trend: Unknown Record Last Updated: 2021-04-08 Quad Summary: South Lake Tahoe (3811988), Emerald Bay (3812081) County Summary: El Dorado Lat/Long: 38.94022 /-120.00389 Accuracy: specific area UTM: Zone-10 N4314412 E759682 Elevation (ft): 6233 PLSS: T12N, R18E, Sec. 5, N (M) Acres: 42.0 Location: FROM REGAN BEACH WEST TO THE EAST END OF POPE BEACH, SOUTH LAKE TAHOE. Detailed Location: INCLUDES THE FOLLOWING SITE NAMES: TAHOE KEYS, UPPER TRUCKEE WEST, UPPER TRUCKEE EAST, REGAN/AL TAHOE, POPE BEACH, LIGHTHOUSE. PORTIONS OF OCCURRENCE MAY BE EXTIRPATED. MAPPED AS SEVERAL POLYGONS BY CNDDB. Ecological: ON DECOMPOSED GRANITE BEACH, DENSE GROWTH OF RUSHES/GRASSES ABOVE BEACH, AND IN MOIST BACKSHORE AREAS. WITH PHACELIA FRIGIDA, LEPIDIUM, SALIX, LUPINUS, AND GRASSES. General: DETAILED POP INFO AVAILABLE AT CNDDB. PORTIONS OF SITE WERE SEEN IN 1979-1983, 1985, 1986, 1988, 1990-2010, 2017, 2019. INCLUDES FORMER EO #7, 8, 9, & 23. Owner/Manager: PVT, CTC, USFS Occurrence No. 6 Map Index: 14422 EO Index: 8254 Element Last Seen: 1979-XX-XX Occ. Rank: None Presence: Extirpated Site Last Seen: 2009-09-10 Occ. Type: Natural/Native occurrence Trend: Unknown Record Last Updated: 2021-04-08 Quad Summary: South Lake Tahoe (3811988) County Summary: El Dorado Lat/Long: 38.94545 /-119.97324 Accuracy: 80 meters UTM: Zone-11 N4314928 E242319 Elevation (ft): 6229 PLSS: T13N, R18E, Sec. 32, SE (M) Acres: 0.0 Location: EL DORADO BEACH, BETWEEN BIJOU AND AL TAHOE, LAKE TAHOE. Detailed Location: FOUND IN A HEAVILY USED PORTION OF THE BEACH, NEAR THE SECTION LINE BETWEEN SECTIONS 32 AND 33, APPROXIMATELY 50 FT EAST OF A DRAINAGE CULVERT DISCHARGE ON THE BEACH. PLANT WAS WEDGED BETWEEN TWO ROCKS IN AN AREA OF HEAVY FOOT TRAFFIC. Ecological: ON BEACH WEDGED BETWEEN ROCKS. General: 1 PLANT SEEN IN 1979. NO PLANTS FOUND DURING SURVEYS IN 1980-1983, 1985, 1986, 1988, 1990, 1993-2009. SITE WAS EXTENSIVELY DISTURBED IN THE EARLY 1980'S BY A BANK STABILIZATION PROJECT. Owner/Manager: PVT, CITY OF SOUTH LAKE TAHOE Commercial Version -- Dated January, 1 2022 -- Biogeographic Data Branch Page 4 of 4 Report Printed on Tuesday, January 18, 2022 Information Expires 7/1/2022 CNPS Rare Plant Inventory CALIFORNIA NATIVE PLANT SOCIETY Search Results 0 matches found. Click on scientific name for details Search Criteria: CRPR is one of [1B:2B] Fed List is one of [None] and State List is one of [None] , Quad is one of [3811988], Elevation above 6223 feet, Elevation below 7000 feet Scientific Name Common Name Family Lifeform Blooming Period Fed List State List Global Rank [State Rank] CA RJare Plant Rank General Habitats Micro Habitats Lowest Elevation (m) � Lowest Elevation (ft) Hignesi Elevation (ft) CA Endemic I I Date Addea l Photo Filter Results: ♦ SCIENTIFIC NAME COMMON NAME FAMILY LIFEFORM No data available in table Showing 0 to 0 of 0 entries BLOOMING PERIOD Highest Elevation (m) FED LIST STATE LIST GLOBAL RANK STATE RANK CA RARE PLANT RANK Suggested Citation: California Native Plant Society, Rare Plant Program. 2022. Rare Plant Inventory (online edition, v9-01 1.5). Website https://www.rareplants.cnps.org [accessed 15 March 2022]. CONTACT US Send questions and comments to rareplants@cnps.org. rrDeveloped by Rincon Consultants, Inc. ABOUT THIS WEBSITE About the Inventory Release Notes Advanced Search Glossary ABOUT CNPS About the Rare Plant Program CNPS Home Page About CNPS Join CNPS CONTRIBUTORS The Calflora Database The California Lichen Society California Natural Diversity Database The Jepson Flora Project The Consortium of California Herbaria CalPhotos Copyright © 2010-2022 California Native Plant Society. All rights reserved. Log in PHOTO Appendix D: Construction Phase Air Quality and Greenhouse Gas Emissions Summary SIERRA ECOTONE SOUITIONS 1UL Road Construction Emissions Model, Version 8.1.0 Daily Emission Estimates for -> STPUD Water and Sewer Main Replacement Total Exhaust Fugitive Dust Total Exhaust Fugitive Dust Project Phases (Pounds) ROG (Ibs/day) CO (lbs/day) NO, (Ibuday) PM10 (Ibs/day) PM10 (lbsiday) PM10 (Ibs/day) PM2.5 (Ibs/day) PM2.5 (Ibs/tlay) PM2.5 (Ibs/day) SOz (Ibs/day) CO2 (Ibs/day) CH4 (lbs/day) N20 (lbuday) CO2e (Its/day) Grubbing/Land Clearing 0.65 4.14 5.76 1.01 0.21 0.80 0.35 0.18 0.17 0.02 1,647.60 0.49 0.02 1,664.85 Grading/Excavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Drainage/Utilities/Sub-Grade 1.35 11.48 12.31 1.27 0.48 0.79 0.59 0.43 0.16 0.04 3,439.27 1.02 0.03 3,475.02 Paving 0.79 11.10 8.46 0.37 0.37 0.00 0.32 0.32 0.00 0.03 2,618.51 0.65 0.04 2,645.60 Maximum (pounds/day) 1.35 11.48 12.31 1.27 0.48 0.80 0.59 0.43 0.17 0.04 3,439.27 1.02 0.04 3,475.02 Total(tons/construction project) 0.07 0.62 0.65 0.07 0.03 0.04 0.03 0.02 0.01 0.00 183.58 0.05 0.00 185.49 Notes: Project Start Year-> 2022 Project Length (months) -> 5 Total Project Area (acres) -> 2 Maximum Area Disturbed/Day (acres) -> 0 Water Truck Used? -> Yes Total Material Imported/Exported Volume (yd3/day) Daily VMT (miles/day) Phase Soil Asphalt Soil Hauling Asphalt Hauling Worker Commute Water Truck Grubbing/Land Clearing 20 0 10 0 100 4 Grading/Excavation 0 0 0 0 0 0 Drainage/Utilifies/Sub-Grade 126 0 30 0 200 4 Paving 0 570 0 150 100 2 PM10 and PM2.5 estimates assume 50% control of fugitive dust from watering and associated dust control measures if a minimum number of water trucks are specified. Total PM10 emissions shown in column F are the sum of exhaust and fugitive dust emissions shown in columns G and H. Total PM2.5 emissions shown in Column I are the sum of exhaust and fugitive dust emissions shown in columns J and K. CO2e emissions are estimated by multiplying mass emissions for each GHG by its global warming potential (GWP), 1 , 25 and 298 for CO2, CH4 and N20, respectively. Total CO2e is then estimated by summing CO2e estimates over all GHG.. Total Emission Estimates by Phase for -> STPUD Waterand Sewer Main Replacement Total Exhaust Fugitive Dust Total Exhaust Fugitive Dust Project rPhases ROG tons/ hale) CO (tons/phase) (Tons for all except CO2e. Metric tonnes for CO2e) ( p NO, tons/ hase) ( p PM10 tons/ hase) ( p PM10 lonsl hose ( p I PM10 tons/ hose) ( p PM2.5 tons/phase) PM2.5 tons) hase) ( ( p PM2.5 tons/phase ( ) SO, tonsl has. ( p ) CO2 tons/ has. ( p ) CH4 tons/phase ( ) N20 tons/ hase) ( p CO29 (MT/ hase) p Grubbing/Land Clearing 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.81 0.00 0.00 1.66 Grading/Excavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Drainage/Utilities/Sub-Grade 0.07 0.57 0.61 0.06 0.02 0.04 0.03 0.02 0.01 0.00 170.24 0.05 0.00 156.05 Paving 0.00 0.05 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 11.52 0.00 0.00 10.56 Maximum (tons/phase) 0.07 0.57 0.61 0.06 0.02 0.04 0.03 0.02 0.01 0.00 170.24 0.05 0.00 156.05 Total (tons/construction project) 0.07 0.62 0.65 0.07 0.03 0.04 0.03 0.02 0.01 0.00 183.58 0.05 0.00 168.27 PM10 and PM2.5 estimates assume 50 % control of fugitive dust from watering and associated dust control measures if a minimum number of water trucks are specified. Total PM10 emissions shown in column F are the sum of exhaust and fugitive dust emissions shown in columns G and H. Total PM2.5 emissions shown in Column I are the sum of exhaust and fugitive dust emissions shown in columns J and K. CO2e emissions are estimated by multiplying mass emissions for each GHG by its global warming potential (GWP), 1 , 25 and 298 for CO2, CH4 and N20, respectively. Total CO2e is then estimated by summing CO2e estimates over all GHGs. The CO2e emissions are reported as metric tons per phase. Road Construction Emissions Model, Version 8.1.0 3/3012021 Road Construction Emissions Model Version 8.1.0 Data Entry Worksheet Note: Required data input sections have a yellow background. begin a new project, click this button to SACRA ME NTO METROPOLITAN Optional data input sections have a blue background. Only areas with a clear clear data previously sneered. This button yellow or blue background can be modified. Program defaults have a white background. will only you opted not to disable whenloading The user is required to enter information in cells D10 through D24, E28 through G35, and D38 through D41 for all project types. macros when tootling this spreadsheet A I R QUALITY Please use "Clear Data Input & User Overrides" button first before changing the Project Type or begin a new project. MANAGEMENT oISTRI CT Input Type Project Name STPUD Water and Sewer Main Replacement Construction Start Year 2022 Enter a year between 2014 and 2025(inclusive) Project Type 1) New Road Construction : Project to build a roadway from bare ground, which generally requires more site preparation than widening an existing roadway For 4: Other Linear Project Type, please provide project specific off- 4 2) Road Widening : Project to add a new lane to an existing roadway road equipment population and vehicle trip data 3) Bridge/Overpass Construction : Project to build an elevated roadway, which generally requires some different equipment than a new roadway, such as a crane 4) Other Linear Project Type: Non -roadway project such as a pipeline, transmission line, or levee construction Project Construction Time 5.00 months Working Days per Month 22.00 days (assume 22 if unknown) Please note that the soil type instructions provided in ceti Predominant Soil/Site Type: Enter 1, 2, or 3 1) Sand Gravel : Use for quaternary deposits (Delte/West County) E18 to E20 are specific to Sacramento County. Maps for project within "Sacramento County", follow soil t ( proje ty', type se election 1 2) Weathered Rack -Earth : Use for Laguna formation (Jackson Highway area) or the lone formation (Scott Road, Rancho Murieta) available from the California Geologic Survey (see weblin instructions in cells E18 to E20 otherwise see instructions provided in below) can be used to determine soil type outside :ells J18 to J22) 3) Blasted Rock : Use for Sale Springs Slate or Copper Hill Volcanice (Folsom South of Highway 50, Rancho Murieta) Sacramento County. Project Length 4.38 miles Total Project Area 1.59 acres Maximum Area Disturbed/Day 0.08 acres hitD:/Mv .conservation.m.aov/cas/information/Deoloaic 1. Yes inD/Paaes/Dooglema aspxkreaionalsedes WaterTrucks Used? 1 2. No Material Hauling Quantity Input Matertal Type Phase Haul Truck Capacity (yd) (assume 20 if unknown Import Volume (yd/tlay) Export Volume (yd/day) Soil Grubbing/Land Clearing 20.00 20.00 Grading/Excavation Drainage/Utilities/Sub-Grade 20.00 63.00 63.00 Paving Asphalt Grubbing/Land Clearing Gmtlin /Excavation Drainage/Utilities/Sub-Grade Paving 1 20.00 1 285.00 1 285.00 Mitigation Options Dn-road Fleet Emissions Mitigation Select "2010 and Newer On -road Vehicles Fleet" option when the on -road heavy-duty truck real for the project will be limited to vehicles of model year 2010 or newer Dff-road Equipment Emissions Mitigation Select "20 % NOx and 45% Exhaust PM reduction" option if the project will be required to use a lower emiffing off -mad construction Fleet. The SMAQMD Construction Mitigation Calculator can be used to confirm compliance with this mitigation measure (http://www.airquality.org/cegalmitigatio,.shM1). Select "Tier 4 Equipment" option if some or all off -road equipment used for the project meets CARS Tier 4 Standard Data Entry Worksheet Road Construction Emissions Model, Version 8.1.0 Note: The program's estimates of construction period phase length can be overridden in cells D50 through D53, and F50 through F53 Construction Periods User Override of Construction Months Program Calculated Months User Override of Phase Starling Date Program Default Phase Starting Date GrubbinglLand Clearing 0.10 0.50 5/1/2022 1/1/2022 Grading/Ezwvation 0.00 2.00 5/7/2022 1/5/2022 DrainagelUtilities/Sub-Grade 4.50 1.75 5/82022 1 1/5/2022 Paving 1 0.40 0.75 10/1/2022 1 5/222022 Totals (Months) 1 5 Note: Soil Hauling emission default values can be overridden in cells D61 through D64, and F61 through F64. Soil Hauling Emissions User override of Program Estimate of User Override of Truck Default Values Calculated User Input MilealRound Trip Miles/Round Trip Round Trips/Day Round Trips/Day Daily VMT Milealround trip: Gmbbing/Land Clearing 10.00 1 1 10.00 Milealround trip: Grading/Excavation 0 0.00 Miles/round trip: Drainage/Utilities/Sub-Grade 10.00 3 7 30.00 Milealround trip: Paving 0.00 0 0.00 Emission Rates ROG CO NO. PM10 PM2.5 SOx CO2 CH4 N20 CO2e Grubbing/Land Clearing (gm,,/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Grading/Ezwvation (grams/mile) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Draining/Utilibes/Suh-Gmde(grams/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Paving (grame/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Hauling Emissions ROG CO NO. PM10 PM2.5 SOx CO2 CH4 N20 CO2e Pounds per day- Gmbbing/Land Clearing 0.00 0.01 0.03 0.00 0.00 0.00 34.14 0.00 0.00 34.48 Tons per const. Period - Grabbing/Land Clearing 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.04 Pounds per day - Grading/Ezwvation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Tons per const. Period - Grading/Excavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Pounds per day - Drainage/Utilities/Sub-Grade 0.00 0.02 0.09 0.01 0.00 0.00 102.43 0.00 0.00 103.44 Tons per const. Period - Drainage/Utilities/Sub-Grade 0.00 0.00 0.00 0.00 0.00 0.00 5.07 0.00 0.00 5.12 Pounds per day - Paving 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Tons per const. Period - Paving 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Total tons per construction project 0.00 0.00 0.00 0.00 0.00 0.00 5.11 0.00 0.00 5.16 Note: Asphalt Hauling emission default values can be overridden in calls D87 through D90, and F87 through F90. Asphalt Hauling Emissions User override of Program Estimate of User Override of Truck Default Values Calculated User Input MilealRound Trip Miles/Round Trip Round Tripa/Day Round Trips/Day Daily VMT Miles/round trip: Gmbbing/Land Clearing 0 0.00 Mileslround trip: Grading/Excavation 0 0.00 Mileslround trip: Drainage/Utilities/Sub-Grade 0 0.00 Mileslround trip: Paving 10.00 15 29 150.00 Emission Rates ROG CO NOx PM10 PM2.5 Sox CO2 CH4 N20 CO2e Grubbing/Land Clearing (grams/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Grading/Ezwvation (grams/mile) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Draining/Utilities/Sub-Grade(grams/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Paving (grams/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Emissions ROG CO NOx PM10 PM2.5 Sox CO2 CH4 N20 002e Pounds per day- Grubbing/Land Clearing 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Tons per const.Period - Grabbing/Land Clearing 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Pounds per day - Grading/Ezwvation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Tons per const.Period - GradinglExcavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Pounds per day - Drainage/Utilities/Sub-Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Tons per const. Period - Drainage/UOlities/Sub-Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Pounds per day - Paving 0.02 0.12 0.46 0.03 0.01 0.00 512.15 0.00 0.02 517.20 Tons per const. Period - Paving 0.00 0.00 0.00 0.00 0.00 0.00 2.25 0.00 0.00 2.28 Total tons per construction project 0.00 0.00 0.00 0.00 0.00 0.00 2.25 0.00 0.00 2.28 3/3012021 Data Entry Worksheet 2 Road Construction Emissions Model, Version 8.1.0 3/30/2021 Note: Worker commute default values can be ovsmdden in cells Of 13 through D118. Worker Commute Emissions User Override of Worker User Input Commute Default Values Default Values Miles) one-way trip One-waythpslday No. of employees: Grubbing/Land Clearing No. of employees: Grading/Excavation No. of employees: Drainage/Utilities/Sub-Grade No. of employees: Paving Emission Rates ROG CO NO. PM10 PM2.5 Sox CO2 CH4 N20 CO2e GrubbinglLand Clearing (grams/mile) 0.02 0.92 0.09 0.05 0.02 0.00 348.29 0.01 0.00 349.59 Grading/Excavation (gmmslmile) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Draining/Utilitisa/Sub-Gmde (gmms/mile) 0.02 0.92 0.09 0.05 0.02 0.00 348.29 0.01 0.00 349.59 Paving (gmmslmile) 0.02 0.92 0.09 0.05 0.02 0.00 348.29 0.01 0.00 349.59 GrubbinglLand Clearing (grams/trip) 0.87 2.06 0.16 0.00 0.00 0.00 79.59 0.01 0.01 81.77 Grading/Excavation (gmmsnrip) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Draining/Utilities/Sub-Grade (grams/trip) 0.87 2.06 0.16 0.00 0.00 0.00 79.59 0.01 0.01 81.77 Paving (gmmallrip) 0.87 2.06 0.16 0.00 0.00 0.00 79.59 0.01 0.01 81.77 Emissions ROG CO NOx PM10 PM2.5 Sox CO2 CH4 N20 CO2e Pounds per day- Grubbing/Land Clearing 0.04 0.29 0.03 0.01 0.00 0.00 80.29 0.00 0.00 80.68 Tons per const.Period - Grabbing/Land Clearing 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.09 Pounds per day - Grading/Excavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Tons per const.Period - Gmding/Excavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Pounds per day - Drainage/Utilities/Sub-Grade 0.08 0.59 0.05 0.02 0.01 0.00 160.59 0.00 0.00 161.36 Tons per const.Period -Dminage/Utilities/Sub-Grade 0.00 0.03 0.00 0.00 0.00 0.00 7.95 0.00 0.00 7.99 Pounds per day - Paving 0.04 0.29 0.03 0.01 0.00 0.00 80.29 0.00 0.00 80.68 Tons per const. Period - Paving 0.00 0.00 0.00 0.00 0.00 0.00 0.35 0.00 0.00 0.35 Total tons per construction project 0.00 0.03 0.00 0.00 0.00 0.00 8.39 0.00 0.00 8.43 Note: Water Track default values can be overridden in cells D145 through D148, and F145 through F148. WaterTmck Emissions User Override of Program Estimate of User Override of Truck Default Values Calculated Userinput Default # Water Trucks Number of Water Trucks Miles TraveledNehicle/Day Miles TraveledNehicle/Day Daily VMT GrubbinglLand Clearing - Exhaust Grading/Excavation - Exhaust DrainagelUtilities/Subgrade Paving Emission Rates ROG CO NOx PM10 Pi Sox CO2 CH4 N20 CO2e GrubbinglLand Clearing (grams/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Grading/Excavation (grams/mile) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Draining/Utilities/Sub-Gmde(gmms/mile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Paving (gmmslmile) 0.07 0.37 1.39 0.10 0.04 0.01 1,548.71 0.00 0.05 1,563.97 Emissions ROG CO NOx PMI0 PM2.5 Sox CO2 CH4 N20 CO2e Pounds per day- Grubbing/Land Clearing 0.00 0.00 0.01 0.00 0.00 0.00 13.66 0.00 0.00 13.79 Tons per const.Period - Grabbing/Land Clearing 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.02 Pounds per day - Grading/Excavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Tons per const. Period - Grading/Excavation 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Pounds per day - Dminage/Utilitiss/Sub-Grade 0.00 0.00 0.01 0.00 0.00 0.00 13.66 0.00 0.00 13.79 Tons per const. Period - Dminage/UtilitieslSub-Grade 0.00 0.00 0.00 0.00 0.00 0.00 0.68 0.00 0.00 0.68 Pounds per day - Paving 0.00 0.00 0.01 0.00 0.00 0.00 6.83 0.00 0.00 6.90 Tons per const. Period - Paving 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.03 Total tons per construction project 0.00 0.00 0.00 0.00 0.00 0.00 0.72 0.00 0.00 0.73 a 0 Note: Fugitive dust default values can be overridden in cells D171 through D173. Fugitive Dust User Override of Max Default Acreage Disturbed/Day Maximum Acreage/Day PM10 pounds/day PM10 tona/per period PM2.5 pounds/day PM2.5 tons/per peri Fugitive Dust-Grabbing/Land Clearing Fugitive Dust- Grading/Excavation Fugitive Dust - Drainage/Utilities/Subgrade 0.08 0.80 0.00 0.79 0.00 0.00 0.04 0.17 0.00 0.16 0.00 0.00 0.01 0.08 Data Entry Worksheet 3 Road Construction Emissions Model, Version 8.1.0 3/3012021 Values in cells D183 through D216, D234 through D267, D285 through D318, and D336 through D369 are required when 'Other Project Type' is selected. Off -Road Equipment Emissions Grubbing/Land Clearing Override of Default Number of Vehicles Default Number of Vehicles Program -estimate Mitigation Option Override of Default Equipment Tier (applicable only when "Tier 4 Mitigation" Option Selected) Default Equipment Tier Type ROG pounds/day CO NO. pounds/day poundsiday PM10 PM2.5 pounds/day poundalday poundsiday sox CO2 pounds/day poundsiday CH4 pounds/day N2O CO2e pounds/day Model Default Tier Aerial Lifts Air Compressors Bore/Drill Rigs Cement and Mortar Mixers Concrete/Industrial Saws Cranes Crawler Tractors Crushing/Proc. Equipment Excavators Forklifts Generator Sets Graders Off -Highway Tractors Off -Highway Trucks Other Construction Equipment Other General Industrial Equipment Other Matenal Handling Equipment Pavers Paving Equipment Plate Compactors Pressure Washers Pumps Rollers Rough Terrain Forklifts Rubber Tired Dozers Rubber Tired Loaders Scrapers Signal Boards Skid Steer Loaders Sur acing Equipment Sweepers/Scrubbers Tractors/Loatlers/Backhoes Trenchers Welders 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.30 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.25 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.33 0.00 0.00 0.00 0.00 0.27 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.63 0.00 0.00 0.00 0.00 0.22 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.08 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 968.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 525.85 0.00 0.00 0.00 0.00 25.57 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.31 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.17 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 978.52 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 531.53 0.00 0.00 0.00 0.00 25.85 0.00 0.00 0.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier 2.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier 2.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Motlel Default Tier 2.00 Motlel Default Tier Motlel Default Tier Model Default Tier Model Default Tier User -Defined Off -road Equipment Number of Vehicles If non -default vehicles are used, please provide information in'Non-default Off -road Equipmerur tab Equipment Tier Type ROG pounds/day CO NOx pounds/day pounds/day PM10 PM2.5 pounds/day pounds/day, pounds/day Sox CO2 poundsiday pounds/day CH4 poundaiday N2O CO2e pounds/day 0.00 N/A 0 0 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A Grubbing/Land Clearing Grubbing/Land Clearing pounds per day tons per phase 0.61 0.00 3.83 0.00 5.69 0.01 0.19 0.00 0.18 0.00 0.02 0.00 1,519.50 1.67 0.49 0.00 0.01 0.00 1,535.90 1.69 Data Entry Worksheet Road Construction Emissions Model, Version 8.1.0 3/3012021 Grading1Excavation Override of Default Number of Vehicles Default Number of Vehicles Program -estimate Mitigation Option Overtide of Default Equipment Tier (applicable only when "Tier 4 Mitigation" Option Selected) Default Equipment Tier Type ROG pounds/day CO NO. pounds/day pounds/day PM10 PM2.5 pounds/day pounds/day pounds/day sox pounds/day CO2 pounds/day CH4 pounds/day N2O CO2e pounds/day Model Default Tier Aerial Lifts Air Compressors Bore/Drill Rigs Cement and Mortar Mixers Concrete/Industrial Saws Cranes Crawler Tractors Crushing/Pmc. Equipment Excavators Forklifts Generator Sets Graders Off -Highway Tractors Off -Highway Trucks Other Construction Equipment Other General Industrial Equipment Other Material Handling Equipment Pavers Paving Equipment Plate Compactors Pressure Washers Pumps Rollers Rough Terrain Forklifts Rubber Tired Dozers Rubber Tired Loaders Scrapers Signal Boards Skid Steer Loaders SudacIng Equipment Sweepers/Scrubbers Trectors/Loaders/Beckhoes Trenchers Welders 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier User -Defined Off -road Equipment Number of Vehicles If non -default vehicles are used, please provide information in'Non-default Off -road Equipment tab Equipment Tier Type ROG pounds/day CO NOx pounds/day pounds/day PM10 PM2.5 Sox pounds/day pounds/day pounds/day pounds/day CO2 pounds/day CH4 pounds/day N2O CO2e pounds/day 0.00 N/A 0 0 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A Grading/Excavation Grading/Excavation pounds per day tans perphase 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Data Entry Worksheet Road Construction Emissions Model, Version 8.1.0 3/3012021 Draina9e11JUlities/Subgmale Override of Default Number of Vehicles Default Number of Vehicles Progtam-estimate Mitigation Option Overtide of Default Equipment Tier (applicable only when "Tier 4 Mitigation" Option Selected) Default Equipment Tier ROG pounds/day CO NO. pounds/day pounds/day PM10 PM2.5 pounds/day pounds/day pounds/day sox CO2 pounds/day pounds/day CH4 pounda/day N2O CO2e pounds/day Model Default Tier Aerial Lifts Air Compressors Bore/Drill Rigs Cement and Mortar Mixers Concrete/Industrial Saws Cranes Crawler Tractors Crushing/Proc. Equipment Excavators Forklifts Generator Sets Graders Off -Highway Tractors Off -Highway Trucks Other Construction Equipment Other General Industrial Equipment Other Material Handling Equipment Pavers Paving Equipment Plate Compactors Pressure Washers Pumps Rollers Rough Terrain Forklifts Rubber Tired Dozers Rubber Tired Loaders Scrapers Signal Boards Skid Steer Loaders Surfacing Equipment Sweepers/Scrubbers Tractors/Loaders/Backhoes Trenchers Welders 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.61 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.00 0.00 0.00 0.25 0.00 0.00 0.09 0.00 0.05 0.21 0.00 0.00 0.00 0.06 0.00 0.00 0.01 0.00 0.00 0.00 4.48 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0.00 0.00 0.00 0.00 0.00 1.33 0.00 0.00 1.71 0.00 0.27 2.83 0.00 0.00 0.00 0.12 0.00 0.00 0.02 0.00 0.00 0.00 5.69 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.22 0.00 0.00 0.00 0.00 0.00 2.63 0.00 0.00 1.14 0.00 0.22 2.12 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.04 0.00 0.02 0.11 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.08 0.00 0.00 0.04 0.00 0.01 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 15.03 0.00 0.00 2.74 0.00 0.00 0.00 1,936.15 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 30.17 0.00 0.00 0.00 0.00 0.00 525.85 0.00 0.00 246.64 0.00 25.57 380.43 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.63 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.17 0.00 0.00 0.08 0.00 0.01 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 15.12 0.00 0.00 2.76 0.00 0.00 0.00 1,957.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 30.32 0.00 0.00 0.00 0.00 0.00 531.53 0.00 0.00 249.29 0.00 25.85 384.52 0.00 0.00 1.00 Model Default Tier Model Default Tier Model Default Tier 1.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier 4.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier 2.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier 2.00 Model Default Tier Model Default Tier Model Default Tier 2.00 Model Default Tier Model Default Tier 2.00 Model Default Tier 2.00 Model Default Tier Model Default Tier Model Default Tier User -Defined Off -road Equipment Number of Vehicles If non -default vehicles are used, please provide information in'Non-default Off -road Equipment tab Equipment Tier Type ROG pounds/day CO NOx pounds/day pounds/day PM10 PM2.5 Sox CO2 pounds/day pounds/day pounds/day pounds/day pounds/day CH4 pounds/day N2O CO2e pounds/da 0.00 N/A 0 0 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A Drainage/Utilities/Sub-Grade Dminage/Utilities/Sub-Grade pounds per day tans per phase 1.26 0.06 10.87 0.54 12.15 0.60 0.45 0.02 0.42 0.02 0.03 0.00 3,162.59 156.55 1.01 0.05 0.03 0.00 3,196.43 158.22 Data Entry Worksheet Road Construction Emissions Model, Version 8.1.0 3/3012021 Paving Override of Default Number of Vehicles Default Mitigation Option Number of Vehicles Override of Default Equipment Tier (applicable only when "Tier 4 Mitigation" Option Program -estimate Selected) Default Equipment Tier Type ROG pounds/day CO NO. pounds/day poundefday PM10 PM2.5 pounds/day poundsiday poundsiday sox CO2 pounds/day poundsiday CH4 pounds/day N2O CO2e pounds/day Model Default Tier Aerial Lifts Air Compressors Bore/Drill Rigs Cement and Mortar Mixers Concrete/hadustnal Saws Cranes Crawler Tractors Crushing/Pmc. Equipment Excavators Forklifts Generator Sets Grace. Off -Highway Tractors Off -Highway Trucks Other Construction Equipment Other General Industrial Equipment Other Material Handling Equipment Pavers Paving Equipment Plate Compactors Pressure Washers Pumps Rollers Rough Terrain Forklifts Rubber Tired Dozers Rubber Tired Loaders Scrapers Signal Boards Skid Steer Loaders Sur/aa g Equipment /Scrubbers Treotors/SweepersLoeders/Beckhoes Trenchers Welders 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.00 0.02 0.00 0.00 0.43 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.02 0.00 0.00 0.00 0.00 0.06 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.06 0.00 0.09 0.00 0.00 7.61 0.00 0.00 0.00 0.00 0.00 1.71 0.00 0.13 0.00 0.00 0.00 0.00 0.12 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.98 0.00 0.11 0.00 0.00 4.48 0.00 0.00 0.00 0.00 0.00 1.14 0.00 0.11 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.00 0.00 0.00 0.00 0.21 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.01 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.19 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 15.03 0.00 0.00 2.74 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 493.37 0.00 15.08 0.00 0.00 1,233.58 0.00 0.00 0.00 0.00 0.00 246.64 0.00 12.79 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.16 0.00 0.00 0.00 0.00 0.40 0.00 0.00 0.00 0.00 0.00 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 15.12 0.00 0.00 2.76 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 498.69 0.00 15.16 0.00 0.00 1,246.88 0.00 0.00 0.00 0.00 0.00 249.29 0.00 12.92 0.00 0.00 0.00 1.00 Model Default Tier Model Default Tier Model Default Tier 1.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier 1.00 Model Default Tier Model Default Tier 1.00 Model Default Tier Model Default Tier Model Default Tier 3.00 Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier Model Default Tier 2.00 Model Default Tier Motlel Default Tier 1.00 Motlel Default Tier Model Default Tier Model Default Tier Model Default Tier User -Defined Off -road Equipment Number of Vehicles If non -default vehicles are used, please provide information in'Non-default Off -road Equipment tab Equipment Tier Type ROG pounde/day CO NOx pounds/day poundr1day PM10 PM2.5 Sox CO2 pounds/day pounds/day pounds/day poundsiday pounds/day CH4 pounds/day N2O CO2e pountls/da 0.00 N/A 0 0 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A 0.00 N/A Paving Paving pounds per day tans per phase 0.73 0.00 10.68 0.05 7.97 0.04 0.32 0.00 0.30 0.00 0.02 0.00 2,019.24 8.88 0.65 0.00 0.02 0.00 2,040.83 8.98 Total Emissions all Phases (tons per construction period) _> 0.07 0.59 0.64 0.02 0.02 0.00 167.10 0.05 0.00 168.89 Data Entry Worksheet Road Construction Emissions Model, Version 8.1.0 3/3012021 Equipment default values for horsepower and hours/day can be overridden in cells D391 through D424 and F391 through F424. Equipment User Override of Horsepower Default Values Horsepower User Override of Hours/day Default Values Hours/day Aerial Lifts Air Compressors Bore/Drill Rigs Cement and Mortar Mixers Concrete/Industrial Saws Cranes Crawler Tractors Crushing/Proc. Equipment Excavators Forklifts Generator Sets Graders Off -Highway Tractors Off -Highway Trucks Other Construction Equipment Other General Industrial Equipment Other Material Handling Equipment Pavers Paving Equipment Plate Compactors Pressure Washers Pumps Rollers Rough Terrain Forklifts Rubber Tired Dozers Rubber Tired Loaders Scrapers Signal Boards Skid Steer Loaders Surfacing Equipment Sweepers/Scrubbers Tractors/Loaders/Backhoes Trenchers Welders 63 8 26.00 78 1.00 8 206 8 9 8 3.00 81 1.00 8 226 8 208 8 85 8 204.00 163 6.00 8 89 8 84 8 175 8 89.00 123 4.00 8 400 8 172 8 88 8 167 8 188.00 126 6.00 8 131 8 7.00 8 4.00 8 13 8 84 8 130.00 81 8.00 8 100 8 255 8 235.00 200 3.00 8 362 8 6 8 80.00 65 4.00 8 254 8 24.00 64 1.00 8 98.00 98 5.00 8 81 8 46 8 END OF DATA ENTRY SHEET Data Entry Worksheet