Southern California
Edison's Proposed
Downs Substation
Expansion Project

(Application A.10-12-016, filed December 29, 2010)



Proponent's Environmental Assessment

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Table of Contents and Executive Summary
1. Purpose and Need
2. Project Alternatives
3. Project Description
4. Environmental Impact Assessment
4.1 Aesthetics
4.2 Agriculture and Forestry Resources
4.3 Air Quality
4.4 Biological Resources
4.5 Cultural and Paleontological Resources
4.6 Geology and Soils
4.7 Greenhouse Gases
4.8 Hazards and Hazardous Materials
4.9 Hydrology and Water Quality
4.10 Land Use and Planning
4.11 Mineral Resources
4.12 Noise
4.13 Population and Housing
4.14 Public Services
4.15 Recreation
4.16 Transportation and Traffic
4.17 Utilities and Service Systems
5. Comparison of Alternatives
6. Other CEQA Considerations
Appendix A. CEQA Checklist
Appendix B. List of Preparers
Appendix C. Air Emission Calculations
Appendix D. Biological Resources Background Information
Appendix E .Cultural Resources
Appendix F . Phase I and Limited Phase II Environmental Site Assessment
Appendix G. Transportation Background Information
Appendix H . Public Involvement
Appendix I . Agency Consultation

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