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Colma Creek Flood Control Channel Wall Repair Project Initial Study/Mitigated Negative Declaration

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Colma Creek Flood Control Channel Wall Repair Project Initial Study/Mitigated Negative Declaration San Mateo County Flood Control District SAN MATEO COUNTY FLOOD CONTROL DISTRICT COLMA CREEK FLOOD CONTROL ZONE Colma Creek Flood Control Channel Wall Repair Project Initial Study/Mitigated Negative Declaration CDM August 26, 2010 PUBLIC DRAFT ______________________________________________________________________________________ Colma Creek Flood Control Initial Study/Mitigated Negative Declaration Page i Channel Wall Repair Project August 26, 2010 PUBLIC DRAFT S an Mateo County Flood Control District ______________________________________________________________________________________ Colma Creek Flood Control Initial Study/Mitigated Negative Declaration Page i Channel Wall Repair Project August 26, 2010 PUBLIC DRAFT San Mateo County Flood Control District Table of Contents List of Tables....................................................................................................................... ii List of Figures ..................................................................................................................... ii List of Appendices ............................................................................................................. iii List of Acronyms and Abbreviations ................................................................................ iii Introduction ......................................................................................................................1 Environmental Checklist Form .....................................................................................2 Project Title: Colma Creek Flood Control Channel Wall Repair Project................. 2 Lead Agency Name and Address.................................................................................. 2 Contact Person and Phone Number.............................................................................. 2 Project Location................................................................................................................ 2 Project Sponsor’s Name and Address........................................................................... 2 General Plan Designation ............................................................................................... 2 Zoning................................................................................................................................ 2 Description of Project ...................................................................................................... 3 Surrounding Land Uses and Setting. .......................................................................... 15 Other Agencies Whose Approval is Required........................................................... 15 Environmental Factors Potentially Affected .............................................................. 16 Determination (To be completed by the Lead Agency) ........................................... 16 Evaluation of Environmental Impacts .......................................................................18 Aesthetics.. ...................................................................................................................... 20 Agriculture and Forest Resources............................................................................... 21 Air Quality...................................................................................................................... 23 Biological Resources...................................................................................................... 29 Cultural Resources......................................................................................................... 41 Geology and Soils .......................................................................................................... 44 Greenhouse Gas Emissions........................................................................................... 47 Hazards and Hazardous Materials.............................................................................. 51 Hydrology and Water Quality..................................................................................... 56 Land Use and Planning................................................................................................. 60 Mineral Resources.......................................................................................................... 62 Noise……….. .................................................................................................................. 63 Population and Housing............................................................................................... 71 Public Services................................................................................................................ 72 Recreation........................................................................................................................ 74 Transportation/Traffic.................................................................................................. 75 Utilities and Service Systems........................................................................................ 81 Mandatory Finding of Significance ............................................................................. 84 ______________________________________________________________________________________ Colma Creek Flood Control Initial Study/Mitigated Negative Declaration Page i Channel Wall Repair Project August 26, 2010 PUBLIC DRAFT San Mateo County Flood Control District List of Preparers.......................................................................................................................... 84 References…................................................................................................................................ 85 LIST OF TABLES Table 1: National and California Air Quality Standards Table 2: Maximum Daily Project Construction Emissions Table 3: Annual Project Construction Emissions Table 4: Special Status Species and Their Potential for Occurrence Table 5: Summary of Annual GHG Emissions Table 6: Decibel Changes, Loudness, and Energy Loss Table 7: Summary of Vibration Levels and Effects on Humans and Buildings Table 8: Construction Operations, Equipment Types and Their Noise Levels Table 9: Level of Service Criteria Table 10: Theoretical Planning Level Daily Traffic Volumes for City Roads in an Urbanized Area Table 11: Peak Construction Period Trip Generation Analysis LIST OF FIGURES Figure 1: Location Map Figure 2: Proposed Project Layout Figure 3: Site Peak Ground Acceleration Figure 4: Common Indoor and Outdoor Noises ______________________________________________________________________________________ Colma Creek Flood Control Initial Study/Mitigated Negative Declaration Page ii Channel Wall Repair Project August 26, 2010 PUBLIC DRAFT San Mateo County Flood Control District LIST OF APPENDICES Appendix A: Air Quality Emissions Calculations Appendix B: Biological Resources USFWS and CDFG Sensitive Species Lists Appendix C: Cultural Resources Assessment Appendix D: Mitigation Monitoring and Reporting Program (RESERVED) LIST OF ACRONYMS AND ABBREVIATIONS AB Assembly Bill BAAQMD Bay Area Air Quality Management District BMPs Best Management Practices CAAQS California Ambient Air Quality Standards CCS cryptocrystalline silicate stone CalEPA California Environmental Protection Agency Cal-OSHA California Occupational Safety Health Agency Caltrans California Department of Transportation CARB California Air Resources Board CCR California Code of Regulations CDFG California Department of Fish and Game CEQA California Environmental Quality Act CERCLA Comprehensive Environmental Response, Compensation, and Liability Act of 1980 CESA California Endangered Species Act CFR Code of Federal Regulations CMA Congestion Management Authority ______________________________________________________________________________________ Colma Creek Flood Control Initial Study/Mitigated Negative Declaration Page iii Channel Wall Repair Project August 26, 2010 PUBLIC DRAFT San Mateo County Flood Control District CNEL Community Equivalent Noise Level CNPS California Native Plant Society CO carbon monoxide CO2 carbon dioxide CO4 methane CWA Federal Clean Water Act dB decibel dBA A-weighted decibel DOC California Department of Conservation DTSC Department of Toxic Substances Control EDR Environmental Data Resources EIR Environmental Impact Report EMFAC Emissions Factor Model ERP Emergency Response Plan FEMA Federal Emergency Management Agency FESA Federal Endangered Species Act FHWA Federal Highway Administration FMMP Farmland Mapping and Monitoring Program g Measurement of the acceleration of gravity GHG greenhouse gas HMCP Hazardous Materials Contingency Plan ips inches per second ______________________________________________________________________________________ Colma Creek Flood Control Initial Study/Mitigated Negative Declaration Page iv Channel Wall Repair Project August 26, 2010 PUBLIC DRAFT San Mateo County Flood Control District LCFS Low Carbon Fuel Standard Ldn day-night noise level Leq equivalent sound level Lmax maximum noise level measured during a monitoring period LOS level of service MG million gallon µg/m3 micrograms per cubic meter MTCO2e metric tons of carbon dioxide equivalent NAHC Native American Heritage Commission NO2 nitrogen dioxide NOx oxides of nitrogen NPDES National Pollutant Discharge Elimination System O3 ozone OFFROAD Off-road vehicle emissions inventory model OSHA Federal Occupational Health and Safety Administration
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