Ranch Community Park with a cable pole within existing SDG&E right-of-way. From this cable pole, the cable alignment would travel either southwest through City of San Diego dedicated park land and Multiple Species Conservation Plan open space areas near Emden Road and Carmel Valley Road (Alternative 2a), or northeast within the SDG&E right-of-way and under a paved service road within the City of San Diego’s Black Mountain Reservoir facility to Carmel Valley Road (Alternative 2b). This alternative would reduce significant and unavoidable impacts to recreation (i.e., the duration of temporary park closure) and traffic and transportation (i.e., the loss of parking) in Black Mountain Ranch Community Park, and would have the least impact on visual quality of all the considered alternatives. Alternative 3 (Los Peñasquitos Canyon Road Underground) would install 5.9 miles of underground transmission line between two new cable poles, along Scripps Poway Parkway, Mercy Road, Black Mountain Road, and Park Village Road, avoiding 6.4 miles of overhead transmission line construction in the northern portion of the proposed project and eliminating the need for one new TSP in Black Mountain Ranch Community Park. This alternative would eliminate a substantial amount of visual impact to residents and biological resource impacts in Black Mountain Ranch Preserve and Del Mar Mesa Preserve. It would also substantially reduce noise impacts by eliminating related helicopter use and operational corona noise in the northern portion of Segment A and all of Segment C. However, this alternative could cause temporary closure and physical deterioration of a trail junction within Los Peñasquitos Canyon Preserve. Underground construction would increase air
Ranch Community Park with a cable pole within existing SDG&E right-of-way. From this cable pole, the cable alignment would travel either southwest through City of San Diego dedicated park land and Multiple Species Conservation Plan open space areas near Emden Road and Carmel Valley Road (Alternative 2a), or northeast within the SDG&E right-of-way and under a paved service road within the City of San Diego’s Black Mountain Reservoir facility to Carmel Valley Road (Alternative 2b). This alternative would reduce significant and unavoidable impacts to recreation (i.e., the duration of temporary park closure) and traffic and transportation (i.e., the loss of parking) in Black Mountain Ranch Community Park, and would have the least impact on visual quality of all the considered alternatives. Alternative 3 (Los Peñasquitos Canyon Road Underground) would install 5.9 miles of underground transmission line between two new cable poles, along Scripps Poway Parkway, Mercy Road, Black Mountain Road, and Park Village Road, avoiding 6.4 miles of overhead transmission line construction in the northern portion of the proposed project and eliminating the need for one new TSP in Black Mountain Ranch Community Park. This alternative would eliminate a substantial amount of visual impact to residents and biological resource impacts in Black Mountain Ranch Preserve and Del Mar Mesa Preserve. It would also substantially reduce noise impacts by eliminating helicopter use and operational corona noise in the northern portion of Segment A and all of Segment C. However, this alternative could cause temporary closure and physical deterioration of a trail junction within Los Peñasquitos Canyon Preserve. Underground construction would increase air related
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