The Project includes improvements to an existing booster pump station (installing a new emergency backup diesel generator; upgrading and retrofitting the building; and replacing pumps, valves, piping, the manual transfer switch, motor control center, and supervisory control and data acquisition (SCADA) hardware and software); improvements to three existing water storage tanks (coating tank interiors and exteriors, installing overflow screens, replacing vents, overflow repair, and upgrading existing antennas, control panels, and the programmable logic controller); improvements to three existing wells (new piping, pumps, motors, valves, well level transmitters, chlorination facilities, and intrusion alarms); general improvements to existing well houses (e.g., windows, doors, siding, roofing, fencing, etc.); and upgrading the water system’s obsolete SCADA hardware component.
A new emergency backup diesel generator with a weatherproof enclosure mounted on a concrete slab will be installed at the Well Field site to power Well 6 and Well 7. Well 8 is currently powered by PG&E with a backup natural gas engine that needs to be upgraded. If upgraded, the natural gas engine would serve as a secondary source of power for Well 8. Alternatively, Well 8 may be connected to the emergency backup generator to be used for the other two wells. If this alternative is selected, the existing natural gas engine and all related equipment would be demolished. The Applicant will determine the preferred alternative during the final design phase of the Project. Water Tank #3 (an inactive 0.4 million gallon below-grade gunite tank) on the Well Field site will be demolished.