Quail Cove Subdivision Project Initial Study/Mitigated Negative Declaration PDP-15-02 Lead Agency: City of Antioch Community Development Department 200 H Street Antioch, California 94531-5007 Technical Assistance: Stantec Consulting Services Inc. 1340 Treat Boulevard, Suite 300 Walnut Creek, California 94597 August 17, 2018 Quail Cove Subdivision Project IS/MND Table of Contents List of Figures ....................................................................................................................................................... iii Initial Study/Mitigated Negative Declaration ............................................................................................. ix 1.1 Introduction .................................................................................................................................... 1-11 1.2 Project Title ........................................................................................................................ 1-11 1.3 Lead Agency .................................................................................................................... 1-11 1.4 Lead Agency Contact.................................................................................................... 1-11 1.5 Project Sponsor(s) Name and Address ........................................................................ 1-11 1.6 Purpose and Need .......................................................................................................... 1-11 1.7 Project Location ............................................................................................................... 1-12 1.8 Land Use Designtations ................................................................................................... 1-12 1.9 Summary of Project ......................................................................................................... 1-12 1.10 Surrounding Land Uses and Setting .............................................................................. 1-13 1.11 CEQA and Public and Agency Review ....................................................................... 1-13 1.12 Required Permits and Approvals .................................................................................. 1-14 1.13 Scope of this Initial Study ................................................................................................ 1-14 1.14 Document organization ................................................................................................. 1-15 2.1 Project Description .......................................................................................................................... 2-1 2.2 Proposed Project ................................................................................................................ 2-1 2.3 Project Location ................................................................................................................. 2-1 2.4 Description of Project ...................................................................................................... 2-10 3.1 Environmental Checklist and Environmental Evaluation ......................................................... 3-1 3.2 Aesthetics ............................................................................................................................ 3-3 3.3 Agriculture And Forestry Resources .............................................................................. 3-23 3.4 Air Quality .......................................................................................................................... 3-29 3.5 Biological Resources ........................................................................................................ 3-49 3.6 Cultural Resources ........................................................................................................... 3-65 3.7 Geology and Soils ............................................................................................................ 3-81 3.8 Greeenhouse Gases. ...................................................................................................... 3-89 3.9 Hazards and Hazardous Materials ................................................................................ 3-95 3.10 Hydrology and Water Quality ...................................................................................... 3-103 3.11 Land Use and Planning ................................................................................................. 3-115 3.12 Mineral Resources .......................................................................................................... 3-119 3.12 Noise ................................................................................................................................. 3-123 3.13 Population and Housing ............................................................................................... 3-139 3.14 Public Services ................................................................................................................ 3-143 3.15 Recreation ....................................................................................................................... 3-149 3.16 Transportation and Traffic ............................................................................................ 3-153 3.17 Utilities and Service Systems ......................................................................................... 3-163 3.18 Mandatory Findings of Significance ........................................................................... 3-171 4.0 References ........................................................................................................................................ 4-1 5.0 List of Preparers ................................................................................................................................. 5-1 i Quail Cove Subdivision Project Table of Contents IS/MND This page left intentionally blank. Quail Cove Subdivision Project IS/MND List of Attachments LIST OF TABLES Table 2.2-1: R-6 Zoning Setback Table 3.3-1: California and National Ambient Air Quality Standards Table 3.3-2: Contra Costa County Area Designations for State and National Ambient Air Quality Table3.3-3: 2010 BAAQMD Proposed Project-Level Air Quality CEQA Thresholds of Significance Table 3.3-4: Project Construction Emissions Estimates Table 3.3-5: Project Operational Emissions Estimates Table 3.5-1: Cultural Resources Studies Conducted in the Last Five Years in 0.50 Mile of the Project Site Table 3.5-2: Cultural Resources Studies Conducted Prior to Five Years ago in 0.50 Mile of the Project Site Table 3.5-3: Known Cultural Resources Located within 0.50 Mile of the Project Site Table 3.7-1: Construction Greenhouse Gas Emissions Table 3.7-2: Operational Greenhouse Gas Emissions Table 3.12-1: Noise and Land Use Compatibility Matrix Table 3.12-2: Guideline Vibration Annoyance Potential Criteria Table 3.12-3: Guideline Vibration Damage Potential Criteria Table 3.12-4: Community Noise survey Results Table 3.12-5: Summary of Federal Highway Administration Roadway Construction Noise Model Table 3.12-6: Vibration Source Levels for Construction Equipment Table 3.16-1: Existing Volume and Levels of Service Table 3.16-2: Trip Generation Summary LIST OF FIGURES Figure 2.0-1: Regional Project Location Figure 2.0-2: Project Site Vicinity Figure 2.0-3: Vesting Tentative Map Figure 3.1-1: KOP Locations Figure 3.1-2: KOP Location 1 Figure 3.1-3: KOP Location 2 Figure 3.1-4: KOP Location 3 Figure 3.1-5: KOP Location 4 Figure 3.4-1: Known Occurrences of Special Status Species 3 Quail Cove Subdivision Project List of Attachments IS/MND Figure 3.5-1: Cultural Resources Records Search Area Figure 3.12-1: Community Noise Survey Location Points LIST OF APPENDICIES Appendix A: City’s Preliminary Development Staff Report Appendix B: Air Quality Modeling Outputs Appendix C: Biological Resources Memo Appendix D: Cultural Resources Memo Appendix E: Stormwater Control Plan Appendix F: Geotechnical Investigation Report Appendix G: Phase I Appendix H: Noise Modeling Outputs Appendix I: Traffic Impact Study Quail Cove Subdivision Project IS/MND Abbreviations Acronyms and Abbreviations AASHTO American Association of State Highway and Transportation Officials AB Assembly Bill AC asphalt concrete ACM asbestos-containing material ADL aerially deposited lead ADT Average Daily Traffic AF Acre feet AFY Acre Feet per Year ALUC Airport Land Use Commission APD Antioch Police Department APN Assessor’s Parcel Number AQAP Air Quality Attainment Plans AUSD Antioch Unified School District AWWTP Antioch Wastewater Treatment Plant BAAQMD Bay Area Quality Management District BART Bay Area Rapid Transit BAU Business-As-Usual BMP best management practice BP Before Present BSA Biological Study Area CAAQS California Ambient Air Quality Standards CAL FIRE California Department of Forestry and Fire Protection CalEEMod California Emissions Estimator Model CalEPA California Environmental Protection Agency Caltrans California Department of Transportation CAP Climate Action Plan CAPCOA California Air Pollution Control Officers Association CARB California Air Resources Board CC&Rs Covenants, Codes, and Restrictions CCTS Central California Taxonomic System CCCFPD Contra Costa County Fire Prevention Department CCCTA Contra Costa County Transit Authority CDC California Department of Conservation CDFG California Department of Fish and Game CDMG California Department of Mines and Geology CDFW