PDF: 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.

LARGE FILES: Files 3 MB or larger have sizes shown in parentheses. For best results when displaying large files, right-click the link and click "Save Target As". This will download the file to your computer. Browse to the save location and double-click the file to open it in Acrobat.

WEBSITE INFO: This page is best viewed with Mozilla Firefox or Internet Explorer. Please report any problems to the Energy Division web coordinator.

Introduction

Welcome to the California Public Utilities Commission (CPUC) website for the California Environmental Quality Act (CEQA) review of proposed construction of the Mesa 500-kV Substation Project (Mesa Substation Project). On March 13, 2015, SCE filed an application [Application No. A.15-03-003] for a Permit to Construct (PTC) with the CPUC to rebuild and upgrade a portion of its transmission infrastructure primarily within the Western Los Angeles Basin Electrical Needs Area. The majority of would take place in the City of Monterey Park with some work occurring in nearby cities and portions of unincorporated Los Angeles County. If the proposed project is approved, the existing 220/66/16-kV Mesa Substation would be upgraded to a 500/220/66/16-kV substation.

In accordance with CEQA, the CPUC, as the Lead Agency, is required to conduct a review of the environmental impacts of the proposed project and is preparing an Environmental Impact Report (EIR). This site provides access to public documents and information relevant to the CEQA review process. Additional project information and documentation will be posted as it becomes available.

Si usted necesita más información en español, por favor, llame al (844) 538-6992.

如果你想了解项目的信息(国语)，请打电话 (844)538-6992.

Quick Links

Project Description

Major components of the Mesa Substation Project include the following:

Phase 1 would consist of grading and initial site development on the western portion of the project site. Phase 2 would consist of construction of the first half of the new Mesa Substation. During Phase 1 and 2, the existing substation on the eastern portion of the site would remain operational in order to maintain electrical service to customers during construction. Phase 3 would consist of demolition of the existing substation and construction of the second half of the new substation on the eastern portion of the site. Construction of the Mesa Substation Project is anticipated to begin in June 2016 and would take approximately 4.5 years.

Project Location

The Proposed Project is located in Los Angeles County, California, primarily in the City of Monterey Park where the existing 220/66/16-kV Mesa Substation would be demolished and the new 500/220/66/16-kV Mesa Substation would be constructed. Other major components will be located within portions of Monterey Park, Montebello, Rosemead, South El Monte, Commerce, Bell Gardens, Pasadena, Industry, Santa Clarita, and in portions of unincorporated Los Angeles County.

Application and Proponent’s Environmental Assessment

SCE filed an application (A.15-03-003) for a PTC and Proponent's Environmental Assessment (PEA) for the proposed project on March 13, 2015. The PEA provides information to begin the independent environmental review process conducted by the CPUC. On April 2, 2015, the CPUC sent a deficiency letter to SCE, which requested additional information needed in order to deem the application complete. SCE provided a response to Deficiency Letter #1 on April 30, 2015. Following review of SCE’s response, the CPUC deemed the application complete on May 15, 2015.

Public Scoping and Notice of Preparation of an EIR

On June 5, 2015, the CPUC published a Notice of Preparation (NOP) indicating that an EIR would be prepared. The NOP, which includes a figure depicting an overview of project components, is located here.

Publication of the NOP initiated a public comment period beginning June 5, 2015, and ending at 5:00 pm on July 5, 2015. All interested parties, including the public, responsible agencies, and trustee agencies, were invited to learn more about the project, ask questions, and present comments about the Mesa Substation Project at the public scoping meeting. The scoping meeting was held on June 23, 2015 at the Langley Center, located at 400 W. Emerson Avenue in the City of Monterey Park, California from 6:00 p.m. until 7:30 p.m. A copy of the PowerPoint presented at the scoping meeting is located here.

In addition, all interested parties were invited to provide written scoping comments via mail, fax, or e-mail to the CPUC during the NOP comment period specified above.

Comments received during the scoping period will be considered during preparation of the Mesa Substation Project EIR. The following comments were received during the scoping period:

Written Comments Received during the Scoping Period
Name Affiliation Date Received
Local and Regional Agencies
Barbara Radlein South Coast Air Quality Management District 6/23/15
Dianna Watson California Department of Transport (Caltrans) 7/1/2015
Deborah Drezner Metropolitan Water District of Southern California (Metropolitan) 7/1/2015
Joyce Kinnear Silicon Valley Power (SVP) 7/6/2015
Tribal Representatives
Andy Salas Chairman Of Gabrieleño Band Of Mission Indians/Kizh (Kit'c) Nation 6/12/15
Individuals and Organizations
Doug Ito None 4/2/2015
Samuel B. Villalobos None 4/13/2015
7/4/2015
7/5/2015
Victor Pelayo None 4/13/20151
J.P. Wolk None 6/9/2015
Saul Roe None 6/12/2015
Oral Comments Received During Scoping Meeting
Samuel Villalobos None 6/23/2015
Note
1Three separate emails were submitted by this commenter on the same date.

All scoping comments can be found here and are organized by the date that they were received.

Data Requests and Responses

The CPUC is currently reviewing the application and PEA to identify additional data needed from the Applicant to complete the environmental review process. The CPUC submitted data requests to the applicant for specific information to support the environmental review process. Those requests and the applicant's responses are included below.

CPUC Request SCE’s Response Attachments
Data Request #1 (5/22/15) DR #1 Response (Part 1) (6/5/15)
DR #1 Response (Part 2) (6/9/15)
DR #1 Response (Part 3) (6/16/15)
DR #1 Response (Part 4) (8/3/15)
 Response Attachments
Data Request #1 Follow Up (6/25/15) DR #1 Follow Up Response (Part 1) (7/22/15)
DR #1 Follow Up Response (Part 2) (8/5/15)
DR #1 Follow Up Response (Part 3) (8/3/15).1
 Response Attachments
Data Request #2 (7/22/15) DR #2 Response (Part 1) (8/1/15)
DR #2 Response (Part 2) (8/17/15)
DR #2 Response (Part 3) (8/18/15)
  
1. Revised visual simulations provided in response to Data Request #1 Follow UP Q.19 show a 10 ft. wall. Consistent with the current proposed project, these simulations will be revised to reflect a 12 ft. wall.

Administrative Law Judge’s Proceeding

For information about the proceeding or to find out how you can participate in the proceeding, please click the following link and enter the proceeding number (1503003):

Link to the Proceeding

For Additional Information

To request additional information or to be added to the mailing list, please contact us by email, fax, or phone, as follows:

Project email: Mesa.CPUC@ene.com
Project fax: 415-398-5326
Project voicemail: (844) 538-6992 (toll free)

The CPUC’s Project Manager is:

Lisa Orsaba, CPUC Project Manager
California Public Utilities Commission
505 Van Ness Avenue
San Francisco, CA 94102
Email: Lisa.Orsaba@cpuc.ca.gov
Tel.: (415) 703-1966