Collinsville 500/230 kilovolt Substation Project

Application No. A2407018

Last Update: November 3, 2025

		Draft Environmental Impact Report Notice of Availability Draft EIR – Volume I Table of Contents ES Executive Summary 1 Introduction 2 Project Description 3 Description of Alternatives 4 Environmental Impact Analysis 4.1 Aesthetics 4.2 Agriculture and Forestry Resources 4.3 Air Quality 4.4 Biological Resources Draft EIR – Volume II 4 Environmental Impact Analysis (Continued) 4.5 Cultural Resources 4.6 Energy 4.7 Geology, Soils, and Paleontological Resources 4.8 Greenhouse Gas Emissions 4.9 Hazards, Hazardous Materials, and Public Safety 4.10 Hydrology and Water Quality 4.11 Land Use and Planning 4.12 Mineral Resources 4.13 Noise 4.14 Population and Housing 4.15 Public Services 4.16 Recreation 4.17 Transportation 4.18 Tribal Cultural Resources 4.19 Utilities and Services Systems 4.20 Wildfire 5 Other CEQA Considerations 6 Comparison of Alternatives 7 List of Preparers Draft EIR – Appendices Appendix A Detailed Route Maps Appendix B Scoping Report Appendix C Alternative Screening Report Appendix D Aesthetics: Visual Simulations Appendix E Air Quality and Greenhouse Gases Supplemental Information Appendix E.1 Proposed Project Air Quality Emissions Calculations Appendix E.2 Health Risk Assessment Appendix E.3 Alternatives Air Quality Emissions Calculations Appendix F Biological Resources Supplemental Information Appendix F.1 Proposed Project Biological Resources Map Series Appendix F.2 Biological Resources Technical Reports Appendix F.3 Aquatic Resources Technical Report Appendix F.4 Bumblebee Habitat Assessment Appendix F.5 NOAA NMFS Biological Assessment Appendix F.6 Alternatives Biological Resources Map Series Appendix F.7 Species Potential to Occur Tables for Alternatives 1 and 2 Appendix F.8 Biological Resources Technical Report Addendum (Alternative 6a/6b) Appendix F.9 Species Potential to Occur Tables for Alternatives 4 and 6a/6b Appendix G Cultural Resources Technical Report (Public) Appendix H Delta Plan Mitigation Measures Consistency Analysis Appendix I Noise Supplemental Information Appendix I.1 Noise and Vibration Impact Assessment Report Appendix I.2 Noise Modeling Appendix J Native American Heritage Commission Letters



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Collinsville 500/230 kilovolt Substation Project

Draft Environmental Impact Report