Mira Sorrento Substation Project

2 Documents in Project


SCH Number
Lead Agency
California Public Utilities Commission (CPUC)
Document Title
Mira Sorrento Substation Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Undeveloped Land / Residential and Industrial/Industrial Employment

Document Description
The proposed project is located in the Sorrento Mesa area within the community of Mira Mesa in the City of San Diego, CA. The proposed 1.4-acre Mira Sorrento Substation would be situated on a 3.7-acre parcel and located approximately 600 feet northeast of I-805 and approximately 800 feet from the nearest residences. The new 120-megavolt ampere (MVA), 69-/12-kilovolt (kV) distribution substation would be constructed and operated by San Diego Gas & Electric (SDG&E) to meet existing and anticipated customer-driven electrical load growth and to improve distribution equipment reliability in the Sorrento Mesa area. Power to the substation facility will be supplied by an existing SDG&E 69 kV transmission line (TL665) that will require installation of underground transmission facilities off the substation site. Initially, six 12 kV underground distribution circuits will be installed and routed to Mira Sorrento Place to tie into the existing underground system serving the area. At full buildout, the substation is planned to have 120 MVA capacity with four 30 MVA transformer banks; four 69 kV lines; sixteen 12 kV circuits; four 12 kV capacitors and four bays of standard steel rack, approximately 30 feet tall, of 69 kV bus and 69 kV transformer; and one 40 foot-long x 20-foot-wide masonry block control shelter. In addition, on the northeast side of the substation site, two tiered retaining walls would be constructed that would be approximately 32 and 20 feet in height. Access to the substation facility will be via two 30-foot-wide driveways from Mira Sorrento Place to the west of the substation.

Contact Information
Michael Rosauer
California Public Utilities Commission, Energy Division
Lead/Public Agency
505 Van Ness Avenue
San Francisco, CA 94102-3298

Phone : (415) 703-2579


San Diego
San Diego
Cross Streets
Vista Sorrento Parkway, Mira Mesa Boulevard
Total Acres
Parcel #
340-090-65, 340-090-67, 304-090-64
State Highways
I-805, 5
Burlington Northern Santa Fe
Marine Corps Air Station
Audeo Charter School
Los Penasquitos Creek

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Electrical Substation)
Local Action
Electrical Substation
Project Issues
Aesthetics Agriculture and Forestry Resources Air Quality Cultural Resources Drainage/Absorption Flood Plain/Flooding Geology/Soils Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Mineral Resources Noise Population/Housing Public Services Recreation Schools/Universities Solid Waste Transportation Vegetation Wetland/Riparian Wildfire Wildlife
Reviewing Agencies
Air Resources Board, Airport/Energy Projects California Department of Fish and Wildlife, South Coast Region 5 (CDFW) California Department of Parks and Recreation California Energy Commission California Highway Patrol California Native American Heritage Commission (NAHC) California Regional Water Quality Control Board, San Diego Region 9 (RWQCB) Caltrans, Division of Aeronautics Department of Water Resources Office of Historic Preservation Resources Agency California Department of Transportation, District 11 (DOT)

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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