Specifications include, but are not limited to: Howe Road Pump Station The Howe Road Pump Station is located along the south side of Howe Road, between Arnold Drive and Vista Way, and is in critical need of repairs. The pump stations need an electrical power equipment upgrade, and the replacement of two pumps due to age and low efficiency. The pump station was built in 1968 and has three 1,500 gpm pumps. The total capacity of the station with the limited pump capacity is 3,700 gpm and a firm capacity of 2,200 gpm. The pump operation is controlled manually by an operator at the water treatment plant. This station is shut down at night due to lower water use in the pressure zone that is served (Zone 2). A surge tank for the station is located outside the pump station building. The pump with limited capacity is the standby pump that was installed in 1983, 15 years after the station was built. Although the pump is the same model, the impeller in the pump is slightly larger than in the other pumping units. Although this pump station has three pumps, the power available to the station is sufficient to run only two pumps at a time. A Tier 1 generator was installed in 1986 and is out of service and will need to be replaced with a Tier 3 compliant generator. The following evaluations and improvements are needed at the Howe Road Pump Station: Pump #1 ‐ Replace discharge valve and electric actuator. ‐ Evaluate condition/thickness of suction/discharge piping. ‐ Install soft starter. Pump #2 and Pump #3 ‐ Replace pump and motor. ‐ Replace discharge valve and electric actuator. ‐ Replace check valve. ‐ Replace suction valve. ‐ Replace suction and discharge flex couplings. ‐ Evaluate condition/thickness of suction/discharge piping. ‐ Install soft starter. Electrical and Program Logic Controller (PLC) ‐ Replace MMC, electrical circuit breakers and wiring. ‐ Evaluate PG&E wiring and main breaker. ‐ PLC replacement and radio network conversion. ‐ Replace push buttons at control stations for motors and air compressors. Surge Tank and Air Compressor ‐ Evaluate the condition and wall thickness of surge tank. ‐ Replace surge tank isolation valve & check valve. ‐ Replace air compressor (electrical & air lines). Flow Meters ‐ Replace flow meter with magnetic read meter. ‐ Replace flow and pressure transmitter. Standby Generator ‐ Install Tier 3 compliant standby generator. Exhaust Fans ‐ Replace fans & controls. A full review of the pump station equipment replacement, including impact on water distribution, should be included as part of the scope of services.
