Reconstruction of Castaic Power Plant Access Road

Castaic Power Plant (also called Castaic Pumped-Storage Plant) is a seven unit pumped-storage hydroelectric plant. It is operated by the Los Angeles Department of Water and Power (LADWP). Peak load power is provided from falling water on the West Branch of the California State Aqueduct. The Castaic Power Plant is located approximately 22 miles from the northern Los Angeles city limits at the upper end of the West arm of Castaic Lake.

Sully-Miller Contracting Co. was awarded the job of reconstructing the plant’s access road in April 2012. Construction began in August of the same year – only after all Sully-Miller employees on the jobsite underwent a mandatory hour long orientation focusing on power plant safety.

Castaic Power Plant is a secure facility, with authorized access required. Each Sully-Miller employee assigned to this project was pre-approved; no other employees were allowed onsite without the proper credentials issued from the plant’s security team.

Sully-Miller’s work consisted of grinding the asphalt road down to the existing base material below. Redwood header boards were installed by the city on the edges of the pavement. Other sections of the road utilized asphalt berms.

To finish reconstruction of the access road, Sully-Miller finish graded, paved with asphalt and striped the lanes using thermoplastic markings.

All LADWP workers had access to the Castaic Power Plant during construction. 

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