Final Initial Study/Mitigated Negative Declaration
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Final PATTERSON PASS WATER TREATMENT PLANT UPGRADES AND OZONATION PROJECT Initial Study / Mitigated Negative Declaration Prepared for September 2018 Zone 7 Water Agency Final PATTERSON PASS WATER TREATMENT PLANT UPGRADES AND OZONATION PROJECT Initial Study / Mitigated Negative Declaration Prepared for September 2018 Zone 7 Water Agency 1425 N. McDowell Boulevard Suite 200 Petaluma, CA 94954 707.795.0900 www.esassoc.com Bend Oakland San Francisco Camarillo Orlando Santa Monica Delray Beach Pasadena Sarasota Destin Petaluma Seattle Irvine Portland Sunrise Los Angeles Sacramento Tampa Miami San Diego 160146.00 OUR COMMITMENT TO SUSTAINABILITY | ESA helps a variety of public and private sector clients plan and prepare for climate change and emerging regulations that limit GHG emissions. ESA is a registered assessor with the California Climate Action Registry, a Climate Leader, and founding reporter for the Climate Registry. ESA is also a corporate member of the U.S. Green Building Council and the Business Council on Climate Change (BC3). Internally, ESA has adopted a Sustainability Vision and Policy Statement and a plan to reduce waste and energy within our operations. This document was produced using recycled paper. TABLE OF CONTENTS Patterson Pass Water Treatment Plant Upgrades and Ozonation Project Page Chapter 1, Introduction ...................................................................................................... 1-1 1.1 Organization of the Document ........................................................................... 1-1 1.2 Purpose of the Mitigated Negative Declaration .................................................. 1-1 1.3 Decision to Prepare a Mitigated Negative Declaration for this Project ............... 1-2 1.4 Public Review Process ...................................................................................... 1-3 1.5 Agencies’ Use of this Document ........................................................................ 1-4 Chapter 2, Project Description .......................................................................................... 2-1 2.1 Introduction ........................................................................................................ 2-1 2.2 Project Goals and Objectives ............................................................................ 2-3 2.3 Project Location and Setting .............................................................................. 2-4 2.4 Proposed Project ............................................................................................... 2-4 2.5 Project Construction .......................................................................................... 2-9 2.5.1 Project Phasing/Schedule .................................................................... 2-9 2.5.2 Staging/Materials Laydown ................................................................. 2-10 2.5.3 Site Work, Grading, and Trenching ..................................................... 2-10 2.5.4 Construction Equipment and Workers ................................................. 2-11 2.5.5 Vehicle Trips and Haul Routes ............................................................ 2-11 2.5.6 System Testing ................................................................................... 2-12 2.6 Project Operations and Maintenance ............................................................... 2-12 Chapter 3, Environmental Checklist – Initial Study ......................................................... 3-1 3.1 Environmental Factors Potentially Affected ....................................................... 3-3 3.2 Environmental Checklist .................................................................................... 3-4 3.2.1 Aesthetics .............................................................................................. 3-4 3.2.2 Agricultural and Forest Resources ........................................................ 3-7 3.2.3 Air Quality .............................................................................................. 3-9 3.2.4 Biological Resources ........................................................................... 3-16 3.2.5 Cultural Resources .............................................................................. 3-24 3.2.6 Geology, Soils, and Seismicity ............................................................ 3-29 3.2.7 Greenhouse Gas Emissions ................................................................ 3-33 3.2.8 Hazardous and Hazardous Materials .................................................. 3-36 3.2.9 Hydrology and Water Quality ............................................................... 3-41 3.2.10 Land Use and Land Use Planning ....................................................... 3-46 3.2.11 Mineral Resources............................................................................... 3-48 3.2.12 Noise ................................................................................................... 3-49 3.2.13 Population and Housing ...................................................................... 3-54 3.2.14 Public Services .................................................................................... 3-55 3.2.15 Recreation ........................................................................................... 3-56 Patterson Pass Water Treatment Plant Upgrades and Ozonation Project i ESA / 160146 Final Initial Study / Mitigated Negative Declaration September 2018 Table of Contents Page Chapter 3, Environmental Checklist – Initial Study (continued) 3.2.16 Transportation and Traffic ................................................................... 3-57 3.2.17 Tribal Cultural Resources .................................................................... 3-60 3.2.18 Utilities and Service Systems .............................................................. 3-63 3.2.19 Mandatory Findings of Significance ..................................................... 3-66 Chapter 4, Report Preparers ............................................................................................. 4-1 4.1 Lead Agency ...................................................................................................... 4-1 4.2 Consultants ........................................................................................................ 4-1 Appendices 1 Air Quality and Greenhouse Gas Emissions Estimates 2 Special Status Species Lists 3 Mitigation Monitoring and Report Plan 4 Comment Letters List of Figures 1 Regional and Location Map ........................................................................................ 2-2 2 Project Overview ......................................................................................................... 2-5 3 Patterson Pass Water Treatment Plant Process ......................................................... 2-6 List of Tables 1.1 Required Permits and Approvals ................................................................................ 1-4 3.1 Average Daily Construction-Related Pollutant Emissions ......................................... 3-12 3.2 Maximum Daily Emergency Generator Testing Pollutant Emissions ........................ 3-13 3.3 Summary of Operational Noise Exposure at Sensitive Receptors Locations Stationary Sources ................................................................................................ 3-50 3.4 Reference Construction Equipment Noise Levels ..................................................... 3-52 Patterson Pass Water Treatment Plant Upgrades and Ozonation Project ii ESA / 160146 Final Initial Study / Mitigated Negative Declaration September 2018 CHAPTER 1 Introduction 1.1 Organization of the Document This document is organized to assist the reader in understanding the potential impacts that the proposed project may have on the environment and to fulfill the requirements of the California Environmental Quality Act (CEQA). Chapter 1, Introduction, describes this document’s purpose under CEQA, describes the public participation process, and summarizes the applicable regulatory requirements. Chapter 2, Project Description, provides an introduction to the Project, including Project background, needs and objectives, and discusses the proposed facilities. Chapter 3, Environmental Checklist, presents the CEQA Initial Study Environmental Checklist, analyzes environmental impacts resulting from the Project and describes mitigation measures that would avoid or reduce potential significant impacts to less-than- significant levels. Chapter 4, List of Preparers, presents the individuals who have contributed to this Initial Study/Mitigated Negative Declaration. Appendix 1, Air Quality and Greenhouse Gas Emissions Estimates, includes the data inputs and results of the CalEEMod modeling conducted for the Project. Appendix 2, Special Status Species Lists, includes lists provided by resource agencies identifying threatened and endangered species that may occur in the Project area. Appendix 3, Mitigation Monitoring and Reporting Plan, is organized in a tabular format, keyed to each mitigation measure incorporated into the Project. Appendix 4, Comment Letters, presents the letters received by the Lead Agency during the 30-day public review period. 1.2 Purpose of the Mitigated Negative Declaration The Alameda County Flood Control and Water Conservation District, Zone 7 (hereafter “Zone 7 Water Agency” or “Zone 7”), acting as the Lead Agency under CEQA, is proposing to design and construct