The City currently operates two potable water pump stations, Larsson Street and 2nd Street, which provide elevated service pressure from the City’s Main Distribution Zone to the Hill Distribution Zone. Larsson Street, originally constructed pre-1954, currently provides a majority of the water demands. The 2nd Street station, constructed in the late 1970s, operates on average less than 15 hours per year, as a back-up facility to Larsson. The combined total design capacity of both stations, without redundancy, is currently 3,940 gpm (1,740 gpm at Larsson and 2,200 at 2nd Street). However, normal wear and equipment age have reduced the actual performance of the combined pumping systems to approximately 3,000 gpm. Due to recent and continued commercial development within the Hill Zone service area, which has increased the required fire flow capacity to 4,000 gpm, the City seeks to increase the firm capacity of the Larsson Street Pump Station (LSPS) from 1,740 gpm to 4,400 gpm and also rehabilitate the 2nd Street Booster Pump Station (2BPS) to maintain / affirm its 2,200 gpm capacity for redundancy.
Project Location:
2nd St Pump Station is located 80’ West of the Intersection of Sepulveda Blvd and 2nd St.
Larsson Pump Station is located 100’ North of the Intersection of 2nd St and Larsson St.
Main objectives of the project are the following:
1. To achieve increased fire pumping capacity of 4,400 gpm, through replacement of the
Larsson Street pumping equipment.
2. Rehabilitation and upgrade of the 2nd Street pumping equipment, to provide required capacity redundancy for the system and mitigate / eliminate vibration issues.
3. Provide efficient operation of both pumping system during normal / daily flow demands.
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