STATE OF CALIFORNIA
PUBLIC UTILITIES COMMISSION

Southern California Edison - Circle City Substation and Mira Loma-Jefferson 66 kV Subtransmission Line Project

(Application A.15-12-007, filed December 4, 2015)

Welcome to the California Public Utilities Commission (CPUC) website for the California Environmental Quality Act (CEQA) review of proposed construction of Southern California Edison's (SCE) Circle City Substation and Mira Loma-Jefferson 66 kV Subtransmission Line Project. An application (A.15-12-007), for the project was submitted to the CPUC on December 4, 2015, and includes the Proponent's Environmental Assessment (PEA) prepared pursuant to Rule 2.4 of the CPUC's Rules of Practice and Procedure. Click here to access the Formal Proceeding website. This site provides access to public documents and information relevant to the CEQA review process.

Subsequent to the release of the Final EIR that was published in December 2018 (see below), on May 10, 2019, SCE requested a temporary suspension of the proceeding to reanalyze some of its underlying data and to prepare and present relevant new updated information to the CPUC that could potentially alter the scope of the remaining Permit to Construct (PTC) proceeding. On June 5, 2019, the Administrative Law Judge assigned to the proceeding filed a ruling that vacated the previously established proceeding schedule, directed further activities and updates from SCE, including completing updated power load forecasting analyses, and requested comments from all parties of the proceeding, including with regard to Attachment 3 of ruling, the Draft Energy Division Staff Report titled “A Battery Storage Right-Sizing Case Study Using an Advanced Geospatial Grid Analytics and Big Data Platform: Supplemental Analysis for the Distribution-Level Battery Storage Alternative to the Proposed Southern California Edison Circle City Substation.”

On March 31, 2020, SCE responded to the ruling indicating that it had completed the necessary analysis and studies related to the Project and determined that the need for the Circle City Substation no longer exists within the current 10-year planning horizon. In addition, SCE has determined that while there is still a need for the Mira Loma-Jefferson Line, that need can be met by reconductoring the existing line, which would otherwise be exempt from licensing under General Order 131-D. Accordingly, SCE is no longer pursuing construction of either the Circle City Substation or the Mira Loma-Jefferson subtransmission line, and on July 22, 2020, the CPUC issued Decision 20-07-007, which dismissed SCE’s PTC Application and closed the proceeding.

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. Note: For best results in displaying the largest files (see sizes shown in parentheses below for files larger than 3.0 MB), right-click the file's link, click "Save Target As" to download the file to a folder on your hard drive, then browse to that folder and double-click the downloaded file to open it in Acrobat.

Background

Pursuant to the California Environmental Quality Act (CEQA), the State of California Public Utilities Commission (CPUC) has prepared an Environmental Impact Report (EIR) for the Project identified below. Southern California Edison (SCE), in its CPUC application (A.15-12-007), filed on December 4, 2015, seeks a permit to construct (PTC) the Circle City Substation and Mira Loma-Jefferson 66 kilovolt (kV) Subtransmission Line Project (Project). The Project consists of construction of: a new 66/12 kV substation (Circle City Substation); four new 66 kV subtransmission source lines; and a new 66 kV subtransmission line, which would be a combination of both overhead and underground construction. The Project would also include an upgrade to the Mira Loma Substation, construction of approximately six new underground 12 kV distribution getaways exiting the proposed Circle City Substation, relocation of approximately 1.9 miles of an existing overhead 33 kV distribution line to an underground position, and installation of telecommunication facilities to connect the Project to SCE's existing telecommunications system.

The purpose of this Project is to ensure the availability of safe and reliable electrical service and to provide additional capacity to serve long-term forecasted electrical demand requirements in the Electrical Needs Area (ENA), while also maintaining or improving system reliability and providing greater operational flexibility. The ENA includes the cities of Corona and Norco, and the surrounding area of unincorporated Riverside County. The Project would be located in portions of northwestern Riverside County, including the cities of Corona, Eastvale, and Norco; and in portions of San Bernardino County, including the cities of Chino and Ontario.

Environmental Review

The CPUC has prepared an Environmental Impact Report (EIR) to evaluate SCE's proposal to complete the project, as well as to evaluate a range of alternatives to the Project. The table below lists the dates for milestones that are associated with the review of the Project.

Current Progress

Public Scoping & Notice of Preparation of an Environmental Impact Report

On January 29, 2016, the CPUC published a Notice of Preparation (NOP) of an EIR for the proposed construction of Southern California Edison's (SCE) Circle City Substation and Mira Loma-Jefferson 66 kV Subtransmission Line Project. A Notice of Completion (NOC) of the NOP was submitted to the State Clearinghouse on the same date.

Public Scoping

State law mandates a 30-day time limit after the date of the NOP for the scoping period. The scoping period for this Project began on Friday, January 29th, 2016, and closed at 5:00 p.m. on Monday, February 29th. Public comments received are part of the public record and are published in the Scoping Report available below.

A summary of the scoping process and comments received during the scoping period is included in the Scoping Report and associated appendices, which are available from the links below:

Scoping Report
Appendix A. - Notice of Preparation
Appendix B. - Newspaper Notices (7.38mb)
Appendix C. - Scoping Meeting Attendance Sheets
Appendix D. - Scoping Meeting Speaker Cards
Appendix E. - Public Workshop and Scoping Meeting Presentations (4.09mb)
Appendix F. - Agency Consultation Meeting Notes
Appendix G. - Scoping Meeting Transcripts
Appendix H. - Written Scoping Comments (65.5mb)

Environmental Impact Report

Public Comment on the DEIR

On June 4, 2018 the CPUC published a Notice of Availability (NOA) of a Draft Environmental Impact Report (DEIR) for the Circle City 66 kV Subtransmission Line Project (A.15-12-007). A Notice of Completion (NOC) of the DEIR was submitted to the State Clearinghouse on the same date.

Public comments on the DEIR were accepted by email and mail during the 45-day public comment period (June 4, 2018 through July 20, 2018).

Public Meetings

The CPUC held two public comment meetings to receive oral and written comments from interested parties. The public meetings were held on Wednesday, June 27, 2018, at the Circle City Center and on Thursday, June 28, 2018, at the Eastvale Community Center:

Click here to view a copy of the Draft EIR public meeting presentation for the Circle City Substation and Mira Loma-Jefferson 66 kV Subtransmission Line Project.

Availability of Final EIR

Public comments on the DEIR were submitted to the CPUC from agencies, organizations, the Applicant, and private members of the public. On December 5, 2018, the CPUC published the Final EIR (FEIR) for the project. The FEIR includes all the comments received on the DEIR as well as responses to each of the comments with revisions to the Draft EIR where necessary. The FEIR also contains the entire content of the DEIR as revised by the FEIR (see FEIR Appendix G).

Click these links to view the FEIR and the FEIR Appendices.

Other Documents Available for Review

The SCE Application for the Permit to Construct (PTC) and PEA for the Circle City Substation and Mira Loma-Jefferson 66 kV Subtransmission Line Project may be viewed here:

PEA Volume 1 of 6 (35.6mb)
PEA Volume 2 of 6 (31.2mb)
PEA Volume 3 of 6 (99.2mb)
PEA Volume 4 of 6 (77.2mb)
PEA Volume 5 of 6 (36.8mb)
PEA Volume 6 of 6 (35.2mb)

Data Requests

The CPUC submits data requests to SCE when it needs specific information to support CEQA document preparation. Eighteen data requests have been submitted to date. Below are links to the data requests and SCE's responses.

SCE Response to Question 1 (February 9, 2016)
SCE Response to Question 2 (February 11, 2016) - Please note a portion of the response information for Data Request No. 1, Question 2 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Response to Question 3 (January 20, 2016) (5.00mb)
SCE Responses to Questions 4-11 (January 20, 2016)
SCE Attachment to Response 11 (January 20, 2016)

SCE Responses to Questions 1-10 (May 19, 2016)
SCE Responses to Questions 11-29 (May 19, 2016)
SCE Response to Question 30 (May 19, 2016)
SCE Response to Question 30 attachments part 1 (May 19, 2016) (3.78mb)
SCE Response to Question 30 attachments part 2 (May 19, 2016)
SCE Response to Questions 31-37 (May 19, 2016)

SCE Responses to Questions 1-7 (June 30, 2016) (27.1mb)

SCE Responses to Question 1 - (July 27, 2016) Please note a portion of the response information for Data Request No. 4, Question 1 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Responses to Questions 2-10 (July 27, 2016)
SCE Responses to Questions 11 (July 27, 2016) - Please note a portion of the response information for Data Request No. 4, Question 11 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Responses to Questions 12-14 (July 27, 2016)

Data Request Letter No. 5 (August 1, 2016)

SCE Response to Question 1 (October 20, 2016)
SCE Response to Question 2 (October 20, 2016)
SCE Response to Question 3 (October 20, 2016)

Data Request Letter No. 6 (October 4, 2016)

SCE Response to Question 1 (October 20, 2016)
SCE Response to Question 1 attachments part 1 (October 20, 2016)
SCE Response to Question 1 attachments part 2 (October 20, 2016)
SCE Response to Question 1 attachments part 3 (October 20, 2016)
SCE Response to Question 1 attachments part 4 (October 20, 2016)
SCE Response to Question 2 (October 20, 2016)
SCE Response to Question 3 (October 20, 2016)
SCE Response to Question 4 (October 20, 2016)
SCE Response to Question 5 (October 20, 2016)
SCE Response to Question 6 (October 20, 2016)
SCE Response to Question 7 (October 20, 2016)
SCE Response to Question 7 attachments part 1 (October 20, 2016)
SCE Response to Question 7 attachments part 2 (October 20, 2016)
SCE Response to Question 7 attachments part 3 (October 20, 2016)

Data Request Letter No. 7 (February 3, 2017)

SCE Response to Question 1 (February 22, 2017)
SCE Response to Verbal Question 1 (April 4, 2017)
SCE Response to Verbal Question 1 attachment (April 4, 2017)
SCE Response to Question 2 (February 22, 2017)
SCE Response to Question 3 (February 22, 2017)
SCE Response to Question 3 attachment (February 22, 2017)
SCE Response to Question 4 (February 22, 2017)
SCE Response to Question 4 attachment (February 22, 2017)
SCE Response to Question 5 (February 22, 2017)
SCE Response to Question 6 (March 10, 2017)
SCE Response to Question 6 attachment (March 10, 2017)

Data Request Letter No. 8 (February 16, 2017)

SCE Response to Question 1 (March 2, 2017)

Data Request Letter No. 9 (February 28, 2017)

SCE Response to Question 1 (March 18, 2017)
SCE Response to Verbal Question 1 (April 7, 2017)

Data Request Letter No. 10 (May 3, 2017)

SCE Response to Question 1 (June 12, 2017)
SCE Response to Question 2 (June 6, 2017)
SCE Response to Question 3 (June 6, 2017)
SCE Response to Question 5 (June 6, 2017)
SCE Response to Question 6 (June 6, 2017)
SCE Response to Question 8 (June 6, 2017)
SCE Response to Question 9 (June 12, 2017)
SCE Response to Question 9 attachment (June 12, 2017)

Data Request Letter No. 11 (June 6, 2017)

SCE Response to Question 1 (June 9, 2017)
SCE Response to Question 1 attachment (June 9, 2017)

Data Request Letter No. 12 (June 27, 2017)

SCE Response to Question 1 (July 13, 2017)
SCE Response to Question 2 (July 13, 2017)
SCE Response to Question 2 Attachment 1 of 1 (July 13, 2017)
SCE Response to Question 3 (July 28, 2017)
SCE Response to Question 4 (July 13, 2017)
SCE Response to Question 5 (July 28, 2017)
SCE Response to Question 6 (July 13, 2017)

Data Request Letter No. 13 (June 27, 2017)

SCE Response to Question 1 (July 13, 2017)
SCE Response to Question 2 (July 13, 2017)
SCE Response to Question 3 (July 13, 2017)
SCE Response to Question 4 (July 13, 2017)
SCE Response to Question 5 (July 13, 2017)
SCE Response to Question 6 (July 13, 2017)

Data Request Letter No. 14 (June 27, 2017)

SCE Response to Question 1 (July 13, 2017)
SCE Response to Question 2 (July 13, 2017)
SCE Response to Question 2 Attachment 1 of 1 (July 13, 2017) - Please note information Attachment 1 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Response to Question 3 (July 13, 2017)
SCE Response to Question 4 (July 13, 2017)
SCE Response to Question 5 (July 13, 2017)

Data Request Letter No. 15 (August 25, 2017)

SCE Response to Question 1 (September 12, 2017)
SCE Response to Question 2 (September 28, 2017)
SCE Response to Question 3 (November 30, 2017)
SCE Response to Question 3 Attachment 1 of 2 (November 30, 2017)
SCE Response to Question 3 Attachment 2 of 2 (November 30, 2017) - Please note information Attachment 1
was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information."
confidential information is not provided on this website.
SCE Response to Question 4 (November 30, 2017)
SCE Response to Question 5 (November 30, 2017)
SCE Response to Question 5 Attachment 1 of 2 (November 30, 2017)
SCE Response to Question 5 Attachment 2 of 2 (November 30, 2017)
SCE Response to Question 6 (September 12, 2017)
SCE Response to Question 7 (October 2, 2017)
SCE Response to Question 7 Attachment 1 of 1 (October 2, 2017)
SCE Response to Question 8 (October 11, 2017)
SCE Response to Question 8 Attachment 1 of 1 (October 11, 2017)
SCE Response to Question 9 (October 2, 2017)
SCE Response to Question 9 Attachment 1 of 1 (October 2, 2017)
SCE Response to Question 10 (October 11, 2017)
SCE Response to Question 11 (September 12, 2017)
SCE Response to Question 12 (September 28, 2017)
SCE Response to Question 13 (September 28, 2017)
SCE Response to Question 14 (September 12, 2017)
SCE Response to Question 15 (September 28, 2017)
SCE Response to Question 16 (September 12, 2017)
SCE Response to Question 16 Attachment 1 of 1 (September 12, 2017)

Data Request Letter No. 16 (December 26, 2017)

SCE Response to Question 1 (January 11, 2018)
SCE Response to Question 2 (January 11, 2018)
SCE Response to Question 3 (January 31, 2018)
SCE Response to Question 3 Attachment 1 of 2 (January 31, 2018)
SCE Response to Question 3 Attachment 2 of 2 (January 31, 2018)
SCE Response to Question 3 Supplemental Response 1 (February 9, 2018)
SCE Response to Question 3 Supplemental Response 2 (April 3, 2018)
SCE Response to Question 4 (January 11, 2018)
SCE Response to Question 5 (January 11, 2018)
SCE Response to Question 5 Attachment 1 of 2 (January 11, 2018)
SCE Response to Question 5 Attachment 2 of 2 (January 11, 2018)
SCE Response to Question 6 (January 24, 2018)
SCE Response to Question 6 Attachment 1 of 2 (January 24, 2018)
SCE Response to Question 6 Attachment 2 of 2 (January 24, 2018)
SCE Response to Question 6 Supplemental Response 1 (February 16, 2018)
SCE Response to Question 6 Supplemental Response 2 (February 26, 2018)
SCE Response to Question 6 Supplemental Response 3 Attachment (March 14, 2018)
SCE Response to Question 7 (January 11, 2018)
SCE Response to Question 8 (January 31, 2018)
SCE Response to Question 8 Attachment 1 of 2 (January 31, 2018)
SCE Response to Question 8 Attachment 2 of 2 (January 31, 2018)
SCE Response to Question 8 Supplemental Response 1 (February 16, 2018)
SCE Response to Question 8 Supplemental Response 2 (April 3, 2018)
SCE Response to Question 9 (January 24, 2018)
SCE Response to Question 10 (January 24, 2018)
SCE Response to Question 10 Attachment 1 of 1 (January 24, 2018)
SCE Response to Question 11 (February 23, 2018)
SCE Response to Question 12 (February 23, 2018)
SCE Response to Question 12 Attachment 1 of 2 (February 23, 2018) - Please note information Attachment 1 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Response to Question 12 Attachment 2 of 2 (February 23, 2018) - Please note information Attachment 1 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Response to Question 12 Supplemental Response (April 3, 2018)
SCE Response to Question 12 Supplemental Response Attachment 1 of 1 (April 3, 2018) - Please note information Attachment 1 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Response to Question 13 (January 24, 2018)
SCE Response to Question 14 (January 25, 2018)
SCE Response to Question 15 (January 12, 2018)
SCE Response to Question 16 (January 23, 2018)
SCE Response to Question 17 (January 12, 2018)
SCE Response to Question 17 (Attachment 1 of 1 (January 12, 2018)
SCE Response to Question 18 (January 12, 2018)
SCE Response to Question 19 (January 11, 2018)
SCE Response to Question 20 (January 31, 2018)
SCE Response to Question 20 Attachment 1 of 3 (January 31, 2018). This attachment includes KMZ files that cannot be posted.
SCE Response to Question 20 Attachment 2 of 3 (January 31, 2018). The attachment includes shape files that cannot be posted.
SCE Response to Question 20 Attachment 3 of 3 (January 31, 2018).
SCE Response to Question 21 (April 3, 2018) - Please note information in SCE’s response to Question 21 was identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.
SCE Response to Question 21 Attachments (April 3, 2018) - Please note information in the attachments were identified by SCE as "CONFIDENTIAL - Contains Critical Electrical Infrastructure Information." This confidential information is not provided on this website.

Data Request Letter No. 17 (July 18, 2018)

SCE Response to Question 1 (August 15, 2018)
SCE Response to Question 1 Attachment 1 of 2 (August 15, 2018
SCE Response to Question 1 Attachment 2 of 2 (August 15, 2018)
SCE Response to Question 2 (August 15, 2018)
SCE Response to Question 2 Attachment 1 of 1 (August 15, 2018)

Data Request Letter No. 18 (August 10, 2018)
Data Request Letter No. 18 - Revised Question 3 (October 15, 2018)

         SCE Response to Question 1 (September 7, 2018)
         SCE Response to Question 1 Attachment 1 of 1 (September 7, 2018)
         SCE Response to Question 2 (September 7, 2018)
         SCE Response to Question 3 (September 26, 2018)
         SCE Response to Question 3 Attachment 1 of 2 (September 26, 2018) - Please note Attachment 1 provided by SCE includes GIS 
         data not suitable for posting. This information is not provided on this website.
         SCE Response to Question 3 Attachment 2 of 2 (September 26, 2018) - Please note information Attachment 2 was identified by
         SCE as Allowed Confidential Treatment Investor Owned Utility Data. This confidential information is not provided on this website.
         SCE Response to Question 3 Revised (November 16, 2018)
         SCE Response to Question 3 Revised Attachment 1 of 1 (November 16, 2018) - Please note information in Attachment 1 was
         identified by SCE as Allowed Confidential Treatment Investor Owned Utility Data. This confidential information is not provided on
         this website.          
         SCE Response to Question 3 Supplemental 1 (November 16, 2018)
         SCE Response to Question 3 Supplemental 2 (November 16, 2018)
         SCE Response to Question 4 (October 5, 2018)
         SCE Response to Question 5 (September 26, 2018)
         SCE Response to Question 6 (August 24, 2018)
         SCE Response to Question 7 (August 24, 2018)
         SCE Response to Question 8 (August 27, 2018)
         SCE Response to Question 9 (August 29, 2018)

For Additional Information

The CPUC, through its Environmental Review Team, is managing the environmental review of the project. To request additional information, please contact us by email or phone, as follows:

Email: CircleCityEIR@esassoc.com
Voicemail: (213) 694-3260

The CPUC's project manager for the Proposed Project is:
Rob Peterson
Energy Division
Infrastructure Permitting and CEQA

Please report any problems to the .

Project Home Page - CPUC Environmental Information - CPUC Home - Top