SDG&E Miguel-Mission 230 kV #2 Project

(Application A.02-07-022, filed July 12, 2002)

Welcome to the California Public Utilities Commission (CPUC) website for the California Environmental Quality Act (CEQA) review of the proposed construction of San Diego Gas & Electric's (SDG&E) Miguel-Mission 230 kV #2 Project. An application for this project was submitted to the CPUC on July 12, 2002 (Application A.02-07-022) and the project was approved by the CPUC on July 8, 2004, in Decision D.04-07-026. This site provides access to public documents and information relevant to the CEQA review.

Note: Document files linked on this page are in Portable Document Format (PDF). To view them, you will need to download the free Adobe Acrobat Reader if it is not already installed on your PC.


SDG&E proposed construction of a new single-circuit 230 kV transmission circuit to address current and future overloads on existing 138 kV and 69 kV transmission lines. The proposed new and relocated transmission circuits for the project would be installed in the existing 35-mile SDG&E right of way between Miguel Substation and Mission Substation. The project consists of the following three principal components: (1) installing a new 230 kV transmission circuit between Miguel and Mission Substations, (2) relocating the existing 69 kV/138 kV circuits on new pole structures between Miguel Substation and Fanita Junction, and (3) modifying Miguel and Mission Substations. The proposed project is located entirely within San Diego County and passes through the Cities of San Diego and Santee, Marine Corps Air Station Miramar, and unincorporated areas in the eastern portion of the county.

Environmental Review

The CPUC completed its environmental review process with the certification of the Final EIR on July 8, 2004. Following are the documents that were published during the environmental review process:

Proponent's Environmental Assessment (PEA)

The PEA may be viewed here.

Environmental Impact Report Addendum

SDG&E filed a Petition for Modification of the Decision on September 30, 2004, to modify the Miguel-Mission Project and the Decision in order to expedite the installation and operation of a temporary 230 kV transmission line during the construction of the project. The temporary 230 kV line will run 15 miles between Miguel and Los Coches Substations. Pursuant to CEQA Guidelines Section 15164, an Addendum to the EIR was prepared to document proposed modifications to the approved project. The Addendum may be viewed here.

Construction Progress and Mitigation Monitoring

Construction of the project began in October 2004. The monitoring reports may be viewed here.

For Additional Information

The CPUC, through its Environmental Review Team, managed environmental review of the project. The CPUC's Project Manager in the Energy Division's CEQA unit is:

Jensen Uchida, CPUC Project Manager
California Public Utilities Commission
505 Van Ness Avenue
San Francisco CA 94102
Tel. (415) 703-5953
Fax (415) 703-2200

To request additional information, please contact us by email at

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