IV. The Proposed Project

The Miguel Mission Project would begin at the Miguel Substation in Bonita and terminate at the existing Mission Substation outside the community of Tierrasanta in San Diego County. The project would run along an existing right of way located in portions of the City of San Diego, the City of Santee, unincorporated areas of San Diego County and the Marine Corps Air Station Miramar property. The project would traverse hills, valleys, mesas and ravines. It would run through commercial and industrial neighborhoods, residential developments, county and regional parks, a wildlife refuge and golf courses.

The proposed project includes the following major elements:


· Installation of a 35 mile, single circuit 230 kV transmission circuit between Miguel Substation and Mission Substation. The existing 138 kV/69 kV steel lattice tower structures would be replaced or modified to accommodate the larger 230 kV circuit for approximately 24 miles between the Miguel Substation and Fanita Junction;


· Relocation of existing 138 kV and 69 kV circuits onto a newly constructed alignment of wood and steel pole structures within the existing SDG&E right-of-way between Miguel Substation and Fanita Junction; and


· Modifications to the Miguel and Mission Substations to accommodate the new 230 kV transmission line, including the installation of new circuit breakers, switches and controls, new concrete foundations for equipment, and new steel support structures.

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