Thousand Oaks Groundwater Utilization Project

Thousand Oaks Groundwater Utilization Project

2775 North Ventura Road, Suite 100 Oxnard, California 93036 805-973-5700 FAX: 805-973-1440 Thousand Oaks Groundwater Utilization Project Public Draft CEQA Initial Study/Mitigated Negative Declaration August 2020 Prepared for City of Thousand Oaks 2100 Thousand Oaks Blvd. Thousand Oaks, CA 91362 K/J Project No. 1744405*02 Table of Contents List of Tables ................................................................................................................................ iv List of Figures................................................................................................................................ v List of Appendices ......................................................................................................................... v List of Acronyms ............................................................................................................................ v Section 1: Mitigated Negative Declaration ................................................ 1-1 1.1 Organization of this IS/MND ................................................................ 1-5 Section 2: Project Description .................................................................... 2-1 2.1 Overview of the Proposed Project ....................................................... 2-1 2.2 City of Thousand Oaks ........................................................................ 2-2 2.3 Project Goals and Objectives .............................................................. 2-2 2.4 Project Location .................................................................................. 2-2 2.5 Project Components ............................................................................ 2-5 2.5.1 Site Improvements ................................................................... 2-5 2.5.2 Water Treatment Plant ............................................................. 2-5 2.5.2.1 WTP Pump Stations............................................... 2-7 2.5.2.2 WTP Decant Tanks ................................................ 2-7 2.5.2.3 Chemical Storage .................................................. 2-7 2.5.2.4 Appurtenances and Other Facilities ....................... 2-8 2.5.3 Road Access ............................................................................ 2-8 2.5.4 Pipeline Segments ................................................................... 2-8 2.5.4.1 Raw Water Transmission Pipeline ......................... 2-8 2.5.4.2 Irrigation Water Pipeline......................................... 2-8 2.5.4.3 Potable Water Pipeline .......................................... 2-8 2.5.5 Well Improvements .................................................................. 2-9 2.6 Project Construction and Operation Activities ..................................... 2-9 2.6.1 Construction Activities .............................................................. 2-9 2.6.2 Construction Schedule ........................................................... 2-11 2.7 Operation and Maintenance of New Facilities ................................... 2-12 2.8 Purpose and Intended Uses of the IS/MND ...................................... 2-12 2.9 Project Design Features/Applicant Proposed Measures ................... 2-12 2.9.1 Permits Potentially Required to Implement the Project .......... 2-15 2.9.2 Funding .................................................................................. 2-15 Section 3: Environmental Checklist ........................................................... 3-1 3.1 Initial Study Checklist .......................................................................... 3-1 3.1.1 AESTHETICS ........................................................................... 3-1 3.1.1.1 Environmental Setting ............................................ 3-1 3.1.1.2 Regulatory Setting ................................................. 3-2 Thousand Oaks Groundwater Utilization Project, CEQA IS/MND Page i Table of Contents (cont'd) 3.1.1.3 Impact Analysis ...................................................... 3-3 3.1.1.4 Mitigation Measures ............................................... 3-5 3.1.1.5 Significance After Mitigation .................................. 3-5 3.1.2 AGRICULTURAL AND FORESTRY RESOURCES ................ 3-6 3.1.2.1 Environmental Setting ............................................ 3-6 3.1.2.2 Impact Analysis ...................................................... 3-7 3.1.2.3 Mitigation Measures ............................................... 3-7 3.1.2.4 Significance After Mitigation .................................. 3-7 3.1.3 AIR QUALITY ........................................................................... 3-8 3.1.3.1 Environmental Setting ............................................ 3-8 3.1.3.2 Regulatory Setting ................................................. 3-9 3.1.3.3 Impact Analysis .................................................... 3-10 3.1.3.4 Mitigation Measures ............................................. 3-16 3.1.3.5 Significance After Mitigation ................................ 3-16 3.1.4 BIOLOGICAL RESOURCES .................................................. 3-18 3.1.4.1 Environmental Setting .......................................... 3-19 3.1.4.2 Regulatory Setting ............................................... 3-22 3.1.4.3 Impact Analysis .................................................... 3-25 3.1.4.4 Mitigation Measures ............................................. 3-28 3.1.4.5 Significance After Mitigation ................................ 3-33 3.1.5 CULTURAL RESOURCES .................................................... 3-34 3.1.5.1 Environmental Setting .......................................... 3-34 3.1.5.2 Regulatory Setting ............................................... 3-34 3.1.5.3 Impact Analysis .................................................... 3-35 3.1.5.4 Mitigation Measures ............................................. 3-36 3.1.5.5 Significance After Mitigation ................................ 3-36 3.1.6 ENERGY ................................................................................ 3-37 3.1.6.1 Environmental Setting .......................................... 3-37 3.1.6.2 Regulatory Setting ............................................... 3-37 3.1.6.3 Impact Analysis .................................................... 3-38 3.1.6.4 Mitigation Measures ............................................. 3-38 3.1.6.5 Significance After Mitigation ................................ 3-38 3.1.7 GEOLOGY AND SOILS ......................................................... 3-39 3.1.7.1 Environmental Setting .......................................... 3-40 3.1.7.2 Regulatory Setting ............................................... 3-40 3.1.7.3 Impact Analysis .................................................... 3-43 3.1.7.4 Mitigation Measures ............................................. 3-46 3.1.7.5 Significance After Mitigation ................................ 3-47 3.1.8 GREENHOUSE GAS EMISSIONS ........................................ 3-48 3.1.8.1 Environmental Setting .......................................... 3-48 3.1.8.2 Regulatory Setting ............................................... 3-49 3.1.8.3 Impact Analysis .................................................... 3-52 3.1.9 HAZARDS AND HAZARDOUS MATERIALS ........................ 3-55 3.1.9.1 Environmental Setting .......................................... 3-55 3.1.9.2 Regulatory Setting ............................................... 3-56 Page ii Thousand Oaks Groundwater Utilization Project, CEQA IS/MND Table of Contents (cont'd) 3.1.9.3 Mitigation Measures ............................................. 3-60 3.1.9.4 Significance After Mitigation ................................ 3-60 3.1.10 HYDROLOGY AND WATER QUALITY ................................. 3-61 3.1.10.1 Environmental Setting .......................................... 3-61 3.1.10.2 Regulatory Setting ............................................... 3-62 3.1.10.3 Impact Analysis .................................................... 3-64 3.1.10.4 Mitigation Measures ............................................. 3-69 3.1.10.5 Significance After Mitigation ................................ 3-69 3.1.11 LAND USE AND PLANNING ................................................. 3-70 3.1.11.1 Environmental Setting .......................................... 3-70 3.1.11.2 Regulatory Setting ............................................... 3-70 3.1.11.3 Impact Analysis .................................................... 3-71 3.1.11.4 Mitigation Measures ............................................. 3-71 3.1.11.5 Significance After Mitigation ................................ 3-71 3.1.12 MINERAL RESOURCES ....................................................... 3-72 3.1.12.1 Environmental Setting .......................................... 3-72 3.1.12.2 Impact Analysis .................................................... 3-72 3.1.12.3 Mitigation Measures ............................................. 3-72 3.1.12.4 Significance After Mitigation ................................ 3-73 3.1.13 NOISE .................................................................................... 3-74 3.1.13.1 Environmental Setting .......................................... 3-74 3.1.13.2 Regulatory Setting ............................................... 3-77 3.1.13.3 Impact Analysis .................................................... 3-78 3.1.13.4 Mitigation Measures ............................................

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