A/B Transmission Line (161/92-kV)/(230-kV) Upgrade Project


SCH Number
Lead Agency
Imperial Irrigation District
Document Title
A/B Transmission Line (161/92-kV)/(230-kV) Upgrade Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
The Project route is primarily zoned as A-2 (general agriculture) and A-3 (heavy agriculture)
Document Description
The A and B 161/92-kV transmission line (A/B Line) is part of the Project and is one of the four major transmission line upgrades planned for the Transmission System Upgrades Program. The Project would consist of critical Imperial Irrigation District (IID) network and facility upgrades, including upgrades to the A/B Lines, that would allow up to 1,200 megawatts of new power generation facilities to connect to the IID transmission grid. The Project would consist of the upgrade to 18.7 miles of the existing double circuit (161kV and 92kV) transmission lattice towers to double circuit 230 kV from ECSS to the East Highline canal, installation of new monopole double circuit structures to support line rerouting, limited replacement of existing support structures with monopoles, and upgrade of the integral substations.

Contact Information

Donald Vargas
Agency Name
Imperial Irrigation District
Contact Types
Lead/Public Agency


State Highways
Hwy 111, 115, 7, I-8

Notice of Completion

Review Period Start
Review Period End
Development Types
Power:Electric Transmission Lines (Megawatts 1200)
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Recreation, Transportation
Reviewing Agencies
California Department of Conservation (DOC), California Department of Parks and Recreation, California Department of Transportation, District 11 (DOT), California Energy Commission, California Highway Patrol, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Colorado River Basin Region 7 (RWQCB), Department of Fish and Wildlife, Region 6, Department of Water Resources, Resources Agency, California Native American Heritage Commission (NAHC)
Reviewing Agency Comments
California Native American Heritage Commission (NAHC)

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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