Willow Creek Community Services District Downtown Wastewater Development Project Draft Environmental Impact Report SCH #2015012014
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Willow Creek Community Services District Downtown Wastewater Development Project Draft Environmental Impact Report SCH #2015012014 June 2015 Draft Environmental Impact Report for the Downtown Wastewater Development Project SCH #2015012014 Prepared for: Willow Creek Community Services District P.O. Box 8 Willow Creek, CA 95573 Attention: Lonnie Danel General Manager (530) 629-2136 Prepared by: GHD Inc. 718 Third Street Eureka, CA 95501 Contact: Pat Kaspari Project Manager (707) 443-8326 Project Ref#: 12057-8410746 June 2015 Table of Contents Table of contents Acronymns and Abbreviations ..................................................................................................................... iv 1 Introduction ...................................................................................................................................... 1-1 2 Project Description ........................................................................................................................... 2-1 3 Environmental Setting, Impacts and Mitigation Measures............................................................... 3-1 3.1 Aesthetics ........................................................................................................................... 3.1-1 3.2 Agriculture and Forest Resources ...................................................................................... 3.2-1 3.3 Air Quality and Odor ........................................................................................................... 3.3-1 3.4 BIological Resources .......................................................................................................... 3.4-1 3.5 Cultural Resources ............................................................................................................. 3.5-1 3.6 Geology and Soils............................................................................................................... 3.6-1 3.7 Greenhoue Gas Emissions ................................................................................................. 3.7-1 3.8 Hazards and Hazardous Materials ..................................................................................... 3.8-1 3.9 Hydrology and Water Quality .............................................................................................. 3.9-1 3.10 Land Use and Planning .................................................................................................... 3.10-1 3.11 Noise ................................................................................................................................. 3.11-1 3.12 Transportation ................................................................................................................... 3.12-1 4 Alternatives Description and Analysis .............................................................................................. 4-1 5 Other CEQA Required Sections ...................................................................................................... 5-1 6 List of Preparers ............................................................................................................................... 6-1 Table index Table 1-1: Summary of Impacts and Mitigation Measures ........................................................................ 1-4 Table 3.3-1 Relevant California and National Ambient Air Quality Standards and Attainment Status ............................................................................................................................................ 3.3-2 Table 3.3-2 Highest Measured Criteria Air Pollutant Concentrations in North Coast Air Basin ............. 3.3-5 Table 3.4-1 Score Value Ranges for NatureServe Conservation Status Ranks .................................... 3.4-2 Table 3.8-1 Sites with Potential Impacted Soil and Groundwater........................................................... 3.8-2 Table 3.8-2 Federal Laws and Regulations Related to Hazardous Materials Management .................. 3.8-5 Table 3.12-1 Definitions of Acoustical Terms ....................................................................................... 3.12-2 Table 3.12-2 Construction Equipment Reference Noise Levels Measured at 50’ ................................ 3.12-7 Table 3.12-3 Vibration Source Levels for Project Construction Equipment .......................................... 3.12-8 Table 4-1 Comparison of Alternatives to the Project, as Mitigated ............................................................ 4-6 GHD | Willow Creek Community Services District - Downtown Wastewater Development Project Draft EIR | i Table of Contents Image index Image 2-1: General flow diagram of recirculating gravel filter system ....................................................... 2-5 Image 3.1-1: Looking east from Willow Glen Road (proposed 6” line) ................................................... 3.1-2 Image 3.1-2: Looking northeast from intersection of Hwy. 96 and Mayfair St. (proposed pump station) ......................................................................................................................................... 3.1-3 Image 3.1-3: Looking northeast from parking lot off Country Club Drive (directional drilling location) ....................................................................................................................................... 3.1-3 Image 3.1-4: Looking south from Roth Road (proposed 6” line) ............................................................ 3.1-4 Image 3.1-5: Looking west along Highway 299 from Roth Road (proposed 6” line) ............................. 3.1-4 Image 3.1-6: Looking east along Highway 299 (proposed 6” line) ........................................................ 3.1-5 Image 3.1-7: Looking east at the proposed infiltration disposal site (Mill Site) ...................................... 3.1-5 Image 3.1-8: Looking east at the alternative infiltration disposal site (Stockel Site) .............................. 3.1-6 Image 3.1-9: View of water treatment plant ........................................................................................... 3.1-9 Figure index (figures located after chapter) Figure 2-1: Project Planning Area ............................................................................................................ 2-11 Figure 2-2: Sewered Area Boundary ....................................................................................................... 2-13 Figure 2-3: Collection, Treatment, and Disposal System ........................................................................ 2-15 Figure 2-4: Potential Service Area Topography ....................................................................................... 2-17 Figure 3.1-1: Viewpoint Locations ......................................................................................................... 3.1-11 Figure 3.8-1: Sites of Interest and Hazard Ranks ................................................................................. 3.8-15 Figure 3.9-1: FEMA 100yr Floodplain Boundary................................................................................... 3.9-15 Figure 3.10-1: Existing Land Use Map .................................................................................................. 3.10-5 Figure 3.10-2: Existing Zoning Map ...................................................................................................... 3.10-7 Appendices Appendix A - Notice of Preparation Appendix B - Letters in Response to Notice of Preparation Appendix C - Botanical Memo Appendix D - Plant Species Table Appendix E - Animal Species Table Appendix F - Hazardous Materials Corridor Study Appendix G - Geotechnical Report Appendix H - Groundwater Anti-degradation Analysis ii | Willow Creek Community Services District - Downtown Wastewater Development Project Draft EIR | GHD Acronyms and Abbreviations Acronyms and Abbreviations AAI all appropriate inquiries AB Assembly Bill AB32 Global Warming Solutions Act of 2006 ADT average daily traffic APE area of potential effect BAAQMD Bay Area Air Quality Management District BACT Best Available Control Technology BGS below ground surface BLM Bureau of Land Management BMPs Best Management Practices BOD biochemical oxygen demand B.P. before present BTEX benzene, toluene, ethylbenzene, and xylene CAA Clean Air Act CAAQS California Ambient Air Quality Standards CalEEMod California Emissions Estimator Model Cal/EPA California Environmental Protection Agency CalFire California Department of Forestry and Fire Protection Cal/OSHA California Occupational Safety and Health Administration Caltrans California Department of Transportation CAPCOA California Air Pollution Control Officers Association CARB California Air Resources Board CBC California Building Code CCR California Code of Regulations CDFG California Department of Fish and Game CDFW California Department of Fish and Wildlife CDPH California Department of Public Health CDPR California Department of Parks and Recreation CEC California Energy Commission CERCLA Comprehensive Environmental Response, Compensation and Liability CEQA California Environmental Quality Act CESA California Endangered Species Act CFGC California Fish and Game Code CFR Code of Federal Regulations CGS California Geological Survey CHP California Highway Patrol CHSC California Health and Safety Code CH 4 methane CIWMB California Integrated Waste Management Board CMU concrete masonry unit CNDDB California Natural Diversity