AKM prepared a preliminary design report, and construction plans, specifications, and cost estimates for a new water booster pump station replacing the existing pump station which was 60 years old, inadequate in capacity, hard to access and in poor condition.
The new station is located at the existing Simon Ranch Reservoir site. The new pump station contains two 850 gpm duty pumps, one 2500 gpm fire flow pump, a 500 kW permanent emergency generator, as well as an inter-zonal connection through a pressure regulating station, all housed in a below-grade, reinforced concrete structure. The pumps are operated by 18 pulse variable frequency drives with bypass solid state contactors. The VFDs are provided to operate the pump station in case of an outage of the single reservoir for Zone 3. The project included 4,100 LF of 8-inch, 10-inch, 12-inch and 16-inch Zone 1 and Zone 3 pipes. As a part of the scope of the work, AKM utilized the City’s hydraulic model and evaluated various pumping alternatives, station layouts, surges, control schematics and zonal demands from historic records. Also evaluated were various flow regulation systems for the pump station during outages of the storage reservoirs.