Pacific Gas and Electric Company’s Embarcadero-Potrero 230 kV Transmission Project

(Application A.12-12-004, filed December 11, 2012)


Final Mitigated Negative Declaration and Supporting Initial Study

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Complete Document in One File (42.8MB)
Notice of Intent
Title Page
Table of Contents
1. Mitigated Negative Declaration
1.1 Project Information
1.2 Introduction
1.3 Project Description
1.4 PG&E PEA Alternatives Considered
1.5 CAISO San Francisco Peninsula Reliability Assessment
1.6 San Francisco Port Commission Negotiations
1.7 Environmental Determination
2. Environmental Determination
2.1 Environmental Factors Potentially Affected
2.2 Environmental Determination
3. Introduction to the Initial Study
3.1 Proposed Project Overview
3.2 Environmental Analysis

4. Project Description (6.1MB)
4.1 Project Title
4.2 Project Sponsor's Name and Address
4.3 Lead Agency Name and Address
4.4 Lead Agency Contact Person and Phone Number
4.5 Project Location
4.6 Surrounding Land Uses and Setting
4.7 General Plan Designation
4.8 Zoning
4.9 Project Overview
4.10 Project Components
4.11 Project Construction
4.12 Operation and Maintenance
4.13 Applicant Proposed Measures
4.14 Other Permits and Approvals
4.15 Electric and Magnetic Fields Summary
Figure 4-1. Project Vicinity
Figure 4-2. Project Location
Figure 4-3. Embarcadero Substation Area
Figure 4-4. Potrero Switchyard Area
Figure 4-5. Potential Staging Locations
Figure 4-6. Typical Duct Bank
Figure 4-7. Typical Manhole
Figure 4-8. Embarcadero HDD Transition Area
Figure 4-9. Potrero HDD Transition Area
Figure 4-10. Southern HDD Transition Manhole Layout
Figure 4-11. Geologic Profile of North Transition from Land to Marine
Figure 4-12. Typical Submarine Cable Layout
Figure 4-13a. Cross Section of the Proposed 230 kV XLPE Submarine Cable with Double Steel Armoring Design
Figure 4-13b. Cross Section of the Proposed 230 kV XLPE Submarine Cable with Double Copper Armoring Design
Figure 4-14a. Revised Site Plan for Proposed Potrero 230 kV Switchyard
Figure 4-14b. Revised Parcel Map for Private Land Rights Acquisition near Potrero Switchyard
Figure 4-15a. Revised Potrero 230 kV Switchyard East Elevation
Figure 4-15b. Revised Potrero 230 kV Switchyard West Elevation
Figure 4-15c. Revised Potrero 230 kV Switchyard North Elevation
Figure 4-16. Potrero Interconnection with 115 kV System
Figure 4-17. Hydroplow
Figure 4-18. HDD Outfall
Figure 4-19. San Francisco Downtown, Pedestrian Magnetic Field Levels (embedded in document)

5. Initial Study
5.1 Aesthetics
Figure 5.1-1. Photograph Viewpoint Locations
Figure 5.1-2a. Photographs of the Potrero Switchyard Site Sheet 1 of 4
Figure 5.1-2b. Photographs of the Potrero Switchyard Site Sheet 2 of 4
Figure 5.1-2c. Photographs of the Potrero Switchyard Site Sheet 3 of 4
Figure 5.1-2d. Photographs of the Potrero Switchyard Site Sheet 4 of 4
Figure 5.1-3a. Existing View from 23rd Street East of Illinois Street
Figure 5.1-3b. Visual Simulation from 23rd Street East of Illinois Street
Figure 5.1-4a. Existing View from 23rd Street at Illinois Street
Figure 5.1-4b. Visual Simulation from 23rd Street at Illinois Street
5.2 Agriculture and Forestry Resources
5.3 Air Quality
5.4 Biological Resources
Figure 5.4-1. Subtidal Habitat
Figure 5.4-2. Herring Spawning and Seal Haulout
5.5 Cultural Resources
5.6 Geology and Soils
Figure 5.6-1. Geologic Map
Figure 5.6-2. Regional Active Fault Map
Figure 5.6-3. Seismic Hazard Map
5.7 Greenhouse Gas Emissions
5.8 Hazards and Hazardous Materials
Figure 5.8-1. Contaminated Sites and Potrero Switchyard
5.9 Hydrology and Water Quality
5.10 Land Use and Planning
Figure 5.10-1. Embarcadero Area Existing Land Use
Figure 5.10-2. Potrero Area Existing Land Use
5.11 Mineral Resources
5.12 Noise
5.13 Population and Housing
5.14 Public Services
5.15 Recreation
5.16 Transportation and Traffic
5.17 Utilities and Service Systems

5.18 Corona and Induced Current Effects

5.19 Mandatory Findings of Significance
Figure 5.19-1. Cumulative Projects
6. Mitigation Monitoring Plan
6.1 Minor Project Changes or Variances
6.2 Dispute Resolution
7. References
8. Response to Comments
Comment Set A. California Department of Fish and Wildlife (3.1MB)
Comment Set B. San Francisco Bay Conservation Development Commission
Comment Set C. San Francisco Public Utilities Commission (3.7MB)
Comment Set D. NRG Potrero LLC
Comment Set E. Andrey Gusev
Comment Set F. Pacific Gas & Electric Company (22.0MB)
Appendix A. Emission Calculations
Appendix B. Special-status Plants and Wildlife
Appendix C. List of Preparers
Appendix D. Proof of Publication

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