Bay Corridor Transmission & Distribution Project Phase I & II
San Francisco Public Utilities Commission
San Francisco, CA
MCK has provided services for both phases of this multi-phase project for SFPUC. Phase I required design, engineering, permitting, procurement of labor, materials procurement, construction, delivery, installation, and testing of new underground electrical utilities, underground wastewater pipeline replacement and rehabilitation, and roadway and sidewalk re-paving, upgrade and restoration. Design scope consisted of two main elements: (1) electrical duct banks, cables, conductors; and (2) sewer force mains, gravity sewer pipe, cured-in-place sewer pipeline liner, water distribution and appurtenances, roadway and sidewalk improvements in public rights-of-way. The project is ongoing. Phase II includes providing construction and testing of new underground electrical duct bank and vaults, a new Auxiliary Water System Supply (AWSS) ductile iron pipe, and new roadway and sidewalk restoration. Additional scope includes ground improvements at Islais Creek, construction, testing, and commissioning of a high voltage electrical 230/12.47 kV electrical gas-insulated substation system, new 230 kV power conductors and two fiber optic cables through the existing underground conduit infrastructure between PG&E Potrero Substation and a new substation, plus related electrical equipment, new 15PkV power conductors and fiber optic cables through the existing underground conduit infrastructure constructed, new 12 kV-480V submersible transformer inside an existing vault at the Mariposa Pump Station site, new interrupter in existing vault, and providing new 12 kV-4160V submersible transformer inside an existing vault at Booster Pump Station site.