CPUC SDG&E San Marcos to Escondido Tie Line 6975 69kV Project


SCH Number
Lead Agency
Public Utilities Commission (California Public Utilities Commission)
Document Title
CPUC SDG&E San Marcos to Escondido Tie Line 6975 69kV Project
Document Type
MND - Mitigated Negative Declaration

Document Description
Note: Review Extended Per Lead The Project is located in the cities of San Marcos, Vista, Carlsbad, Escondido, and unincorporated areas in northern San Diego County, California. It would originate at the San Marcos Substation on the west and terminate at the Escondido Substation on the east and would be located within SDG&E right-of-way (ROW). To fully accommodate the Project, 1.2 acres of additional ROW would be acquired in San Marcos. The proposed Project would include a combination of approximately 12 miles of new overhead single-circuit electric power line structures, rebuild of existing structures from single circuit to double circuit, and the reconductoring and re-energizing of existing conductors.

Contact Information
Joyce Steingass
California Public Utilities Commission (CPUC)
505 Van Ness Avenue
San Francisco, CA 92069



33°07'52.86"N 117°12'04.72"W
Vista San Marcos Escondido Carlsbad
San Diego
Cross Streets
Discovery Street and W. San Marcos Blvd
Total Acres
~12 mi
State Highways
15 & 78
McClellan-Palomar Arpt
San Marcos HS

Notice of Completion

Review Period Start
Review Period End
Development Type
Power:Other Power Type (transmission line)
Project Issues
Cumulative Effects Landuse Growth Inducing Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Solid Waste Soil Erosion/Compaction/Grading Sewer Capacity Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Drainage/Absorption Biological Resources Archaeologic-Historic Air Quality Aesthetic/Visual
Reviewing Agencies
Department of Fish and Wildlife, Region 5 Caltrans, District 1 Air Resources Board, Major Industrial Projects Cal Fire California Department of Parks and Recreation California Energy Commission California Highway Patrol California Public Utilities Commission Caltrans, Division of Aeronautics Department of Conservation Department of Toxic Substances Control Native American Heritage Commission Regional Water Quality Control Board, Region 9 Resources Agency State Water Resources Control Board, Division of Water Quality


Environmental Document
extension memo   PDF 1163 K SDGE TL6975 69kV Draft IS-MND   PDF 92113 K Summary Form   PDF 89 K
NOC   PDF 2715 K
State Comments
2019049009 CDFW SCR   PDF 1461 K 2019049009 caltrans   PDF 749 K
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