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Pacific Gas and Electric Company Egbert Switching Station Project

(Martin Substation Extension)

(Application No. A.17-12-021)

Last Update: November 5, 2021

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Welcome to the California Public Utilities Commission (CPUC) website for the California Environmental Quality Act (CEQA) review of Pacific Gas and Electric Company’s (PG&E’s) Egbert Switching Station Project (proposed project). PG&E submitted an application for this project to the CPUC on December 28, 2017 (Application A.17-12-021) accompanied by the Proponent’s Environmental Assessment (PEA). CPUC voted to grant PG&E a certificate of public convenience and necessity (CPCN) authorizing the construction the proposed project on June 25, 2020 (Decision D.20-06-037). This site provides access to public documents and information relevant to the CEQA review process.

The following timeline represents the overall environmental review process (green box depicts current status).



Project Description

Application and Proponents’ Environmental Assessment

Application Review, Data Requests, and Responses

Public Participation (Scoping Report)

Environmental Review

Commission Decision

NewConstruction Progress and Mitigation Monitoring

For Additional Information


The proposed project was recommended by the California Independent System Operator (CAISO) in its 2014-2015 Transmission Plan and approved by the CAISO Board of Governors at their March 26-27, 2015 meeting. PG&E’s Egbert Switching Station Project proposes to improve reliability of electric service to its customers in San Francisco.

The applicant’s objectives for the proposed project are:

  • To improve reliability of PG&E’s transmission system serving San Francisco by constructing a new 230 kV switching station in the vicinity of Martin Substation that provides a high likelihood of continued electric service to San Francisco should an extreme event render Martin Substation inoperable.
  • To construct a safe and economically and technically feasible project that minimizes environmental impacts and that will deliver 230 kV power received from the south to San Francisco.
  • To provide a 230 kV connection between a new switching station and Martin Substation to enable the transmission system serving San Francisco to operate in the event that a 230 kV transmission line serving either Martin Substation or the proposed switching station experiences an unplanned outage.

Project Description

The proposed project is located in the City and County of San Francisco, the City of Daly City, and the City of Brisbane (see the Project Vicinity Map). The project proposes the construction of a new 230 kV switching station (Egbert Switching Station) in San Francisco. PG&E would construct, operate, and maintain the new 230 kilovolt (kV) switching station. The proposed project will reroute two existing underground 230 kV transmission lines currently connected to the existing Martin Substation and connect them to the proposed Egbert Switching Station. Specifically, the existing Martin-Embarcadero line will be looped into the proposed Egbert Switching Station, creating a Martin-Egbert line and an Egbert-Embarcadero line, and the existing Jefferson-Martin line will be rerouted and extended to the proposed Egbert Switching Station, creating a Jefferson-Egbert line (see the Project Location Map).

Rerouting the existing underground 230 kV lines will require constructing approximately 3.9 miles of new underground transmission line installed mainly in paved areas, with approximately 420 feet to be installed by trenchless technology under U.S. Highway 101.

Project construction is expected to last approximately 22 months.

Application and Proponent’s Environmental Assessment (PEA)

PG&E filed an application (A.17.12.021) and PEA on December 28, 2017, for a Certificate of Public Convenience and Necessity authorizing the construction of the proposed project. The documents at the following links are available for the public to view:

Application Review, Data Requests, and Responses

The CPUC conducted a completeness review of the PEA to identify additional data needs from the applicant to complete the environmental review. Based on this review, PG&E’s application was deemed complete on September 24, 2018.

Completeness letter – September 24, 2018.

CPUC Review and Data Request PG&E’s Response Attachments
CPUC Completeness Review letter and Data Request 1.0 (Submitted January 26, 2018) PG&E Response to Data Request 1.0 (March 14, 2018) Attachment 1: Native PEA and Application Files
Attachment 2: Proposed Egbert Switching Station Exhibits
Attachment 3: Aesthetics
Attachment 4: Hazards and Hazardous Materials
Attachment 5: GIS Manufacturer Data Sheets
Data Request 2.0 (Submitted April 11, 2018) PG&E Response to Data Request 2.0 (April 26, 2018) Attachment 1: San Francisco Public Meeting April 3, 2018 Written Comment Summaries
Attachment 2: PG&E Egbert Switching Station Project – Bat Habitat Assessment
Attachment 3: Example Expanded Metal Mesh Specifications and Sample Images
Data Request 3.0 (submitted May 17, 2018) PG&E Response to Data Request 3.0 (June 7, 2018) Attachment 1: Vehicle Trip Generation Summary, PCE update
Attachment 2: Preliminary Transmission EMF Management Plan Magnetic Field Calculations
Attachments 3 and 4: GIS files and confidentiality notice (not provided due to confidential nature)
PG&E Response to Data Request 3.0, question 2.b (July 20, 2018) None
Data Request 4.0 (submitted August 21, 2018) PG&E Response to Data Request 4.0 (August 28, 2018) Attachment 1: Record of Conversation with Bay Area Air Quality Management District
Attachment 2: Donaldson Company Inc. 2015 Exhaust Project Guide for Medium-& Heavy-duty Vehicles and Equipment, referenced pages
Attachments 3: Cat® 24 Motor Grader Specifications
Data Request 5.0 (submitted February 7, 2019) PG&E Response to Data Request No. 5 (July 1, 2019) None
Data Request 6.0 (submitted July 29, 2019) PG&E Response to Data Request No. 6 (August 6, 2019) Limited Phase II Site Investigation for 1755 Egbert Avenue in San Francisco, California (Environmental Resources Management, 2016)

Public Participation


On November 16, 2018, the CPUC published a Notice of Preparation (NOP) of an Environmental Impact Report (EIR) for the Egbert Switching Station (Martin Substation Extension) Project (A.17-12-021). The NOP had a public review period (30-days) from November 16, 2018 to December 17, 2018. All scoping comments were due by December 17, 2018.

Click on the links below for the project scoping report, which provides a summary of the scoping comments received, and the NOP.

Scoping Report - January 30, 2019

Notice of Preparation (NOP) - November 16, 2018

Public Scoping Meeting

In order to provide the public and regulatory agencies with an opportunity to learn more about the project and to comment on the scope and content of the environmental information to be included in the Draft EIR, the CPUC held a public meeting at the DoubleTree by Hilton in Brisbane on December 3, 2018 from 5:30 p.m. to 7:30 p.m. Below please find the presentation that was presented at the meeting.

Scoping Meeting Presentation - December 3, 2018

Environmental Review

Final Environmental Impact Report

The Final EIR was released on December 23, 2019. The links below provide access to the Notice of Availability and the Final EIR with appendices.

Draft Environmental Impact Report

The Draft EIR was released for public review on September 30, 2019, for a 45-day public review period, ending November 14, 2019. Click on the links below for the Notice of Availability, Draft EIR, and the Draft EIR appendices.

  • Notice of Availability
  • Draft EIR
  • Draft EIR Appendices (see book marks in PDF)
    • D.3-1 Construction Emissions Summary
    • D.3-2 Health Risk Assessment
    • D.3-3 Memo of Health Effect from Criteria Air Pollutants
    • D.4-1 Biological Resources Technical Report
    • D.4-2 Bat Habitat Assessment
    • D.5-1 Cultural Resources Report [Confidential]
    • D.7-1 Geologic Hazard and Feasibility Evaluation
    • D.7-2 Paleontological Inventory Report
    • D.9-1 EDR DataMap Corridor Study
    • D.9-2 Limited Phase II Site Investigation
    • D.16-1 Design Guidelines for Electrical Facilities
    • D.16-2 Preliminary Transmission EMF Management Plan

As outlined in the Notice of Availability, all comments on the Draft were due no later than November 14, 2019, 5:00 PM. Hard copies of the Draft and Final EIR are available at the following libraries.

Location Address Telephone
Brisbane Library 250 Visitacion Avenue, Brisbane, 94005 415.467.2060
Bayshore Branch Library 460 Martin Street, Daly City, 94014 650.991.8074
Visitacion Valley Library 201 Leland Avenue, San Francisco, 94134 415.355.2848
Portola Branch Library 380 Bacon Street, San Francisco, 94134 415.355.5660
San Francisco Public Library 5075 3rd Street, San Francisco, 94124 415.355.5757

Commission Decision

The CPUC voted on June 25, 2020 to grant PG&E a certificate of public convenience and necessity (CPCN) authorizing the construction of the Egbert Switching Station Project with the environmentally superior project alternative and all mitigation measures identified in the final Environmental Impact Report for this project. A Notice of Determination was filed with the State Clearinghouse on July 13, 2020.

NewConstruction Progress and Mitigation Monitoring

For Additional Information

The CPUC, through its Environmental Review Team, is conducting an environmental review of the project. To request additional information or to be added to the mailing list, please contact us by email, fax, or phone, as follows:

Project email: egbert@dudek.com
Project voicemail: (800) 997-7430
Project fax: (800) 997-7450

The CPUC's project manager is:

Eric Chiang, CPUC Project Manager
California Public Utilities Commission
505 Van Ness Avenue
San Francisco, CA 94102
Email: eric.chiang@cpuc.ca.gov

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