Franklin Canyon RV Resort Project RV and Tent Camping and a Redeveloped Golf Course Facility

Initial Study/Mitigated Negative Declaration for the Franklin Canyon RV Resort Project RV and Tent Camping and a Redeveloped Golf Course Facility 3100 Franklin Canyon Road City of Hercules March 2021 Prepared by MIG, Inc. Berkeley, CA Table of Contents 1. Project Information ...................................................................................................................... 5 1.1 Project Title ......................................................................................................................... 5 1.2 Lead Agency Name and Address .......................................................................................... 5 1.3 Contact Person and Phone Number ...................................................................................... 5 1.4 Project Sponsors Names and Addresses ................................................................................ 5 1.5 General Plan Designation ..................................................................................................... 5 1.6 Zoning ................................................................................................................................. 5 1.7 Introduction ......................................................................................................................... 5 1.8 Project Location and Context ............................................................................................... 5 1.9 Project Description ............................................................................................................... 6 1.10 Native American Consultation ............................................................................................. 8 2. Summary of Findings: Impacts and Mitigations ......................................................................... 21 3. Environmental Factors Potentially Affected ............................................................................... 31 4. Determination ............................................................................................................................ 31 5. Evaluation of Environmental Impacts ........................................................................................ 32 6. Issues ......................................................................................................................................... 34 6.1 Aesthetics .......................................................................................................................... 34 6.2 Agriculture and Forest Resources ....................................................................................... 43 6.3 Air Quality ......................................................................................................................... 45 6.4 Biological Resources .......................................................................................................... 54 6.5 Cultural Resources ............................................................................................................. 77 6.6 Energy Resources ............................................................................................................... 84 6.7 Geology and Soils .............................................................................................................. 85 6.8 Greenhouse Gas Emissions ................................................................................................ 90 6.9 Hazards and Hazardous Materials ...................................................................................... 95 6.10 Hydrology and Water Quality .......................................................................................... 100 6.11 Land Use and Planning .................................................................................................... 106 6.12 Mineral Resources............................................................................................................ 108 6.13 Noise ............................................................................................................................... 109 6.14 Population and Housing ................................................................................................... 127 6.15 Public Services ................................................................................................................. 128 6.16 Recreation ........................................................................................................................ 131 6.17 Transportation .................................................................................................................. 133 6.18 Tribal Cultural Resources ................................................................................................. 139 6.19 Utilities and Service Systems ........................................................................................... 142 6.20 Wildfire ........................................................................................................................... 149 6.21 Mandatory Findings of Significance ................................................................................. 151 7. Lead Agency and Consultants .................................................................................................. 153 List of Figures Figure 1: Project Location Map ........................................................................................................... 9 Figure 2: Project Vicinity Map .......................................................................................................... 10 Figure 3: Overall Site Plan ................................................................................................................. 11 Figure 4: Schematic Wastewater Treatment & Disposal Layout ......................................................... 12 Figure 5: Conceptual Landscape Plan ................................................................................................ 12 Figure 6: Conceptual Landscape Plan ................................................................................................ 14 Figure 7: Conceptual Landscape Plan ................................................................................................ 15 Figure 8: Conceptual Landscape Plan ................................................................................................ 16 Figure 9: Conceptual Grading Plan - Overall ..................................................................................... 17 Figure 10: Conceptual Grading Plan - Clubhouse .............................................................................. 18 Figure 11: Utilities Plan ..................................................................................................................... 19 Figure 12: Conceptual Drainage and Stormwater Management Plan .................................................. 20 Figure 13. Photo Simulation Viewpoints............................................................................................ 35 Figure 14. Viewpoint A Simulation ................................................................................................... 36 Figure 15. Viewpoint B Simulation ................................................................................................... 37 Figure 16. Viewpoint C Simulation ................................................................................................... 38 Figure 17. Viewpoint D Simulation ................................................................................................... 39 Figure 18. Ambient Sound Monitoring Locations ............................................................................ 114 List of Tables Table 1. San Francisco Bay Area Air Basin Attainment Status........................................................... 47 Table 2. Construction Activity, Duration, and Typical Equipment ..................................................... 48 Table 3. Estimated Project Construction Criteria Air Pollutant Emissions .......................................... 48 Table 4. Estimated Project Operational Criteria Air Pollutant Emissions............................................ 51 Table 5. Historic Resources Within 0.5 Miles of the Project Site ....................................................... 77 Table 6. Archaeological Resources within the Project Site ................................................................. 78 Table 7. Archaeological Reports within the Project Site ..................................................................... 79 Table 8. Project Greenhouse Gas Emissions ...................................................................................... 92 Table 9. Bioretention Basins /Detention Pond Requirements ........................................................... 104 Table 10. Summary of Measured Ambient Noise Levels (dBA) ....................................................... 115 Table 11. City of Hercules General Plan Noise / Land Use Compatibility Standards (continued) ..... 117 Table 12. City of Hercules Maximum Allowable Noise Exposure to Stationary Sources .................. 118 Table 14. Caltrans’ Vibration Criteria for Building Damage ............................................................ 124 Table 15. Caltrans’ Vibration Criteria for Human Response ........................................................... 124 Table 16. Potential Groundborne Vibration Levels ........................................................................

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