PSOMAS-A-2020-076-03 - Laserfiche WebLink

Home Browse Search

Transbay Pump Station Evaluation/Rehabilitation Coronado, CA Psomas was retained by the City of Coronado, as part of their as -needed contract, to prepare a preliminary design report and construction plans for the Transbay Sewer Pump Station. The Transbay Pump Station was constructed in 1971 and pumps the sewage received from all residential, commercial, and military facilities (e.g. North Island, and the Naval Amphibious Base) within city limits and discharges to the City of San Diego wastewater system. The pump station requires upgrades and/or repairs to various project features, including: ■ Evaluation of concrete drywell structure in visible areas to identify cracking and spelling for repair ■ Replacement of wet well liner • Replacement of wet well access manhole lid with a gas -tight access hatch ■ Evaluate condition of existing pumps versus performance requirements ■ Replacement of all suction, discharge and header valves in dry well and force main valves on site (gate valves, plug valves, check valves and air release valves) ■ Evaluation of pump system curves ■ Installation of new flow meter and vault ■ New monorail system in the pump room One of the major goals of the City is continued operation of this critical pump station during construction of the proposed upgrades. Psomas' scope of services includes evaluation of various sewage bypass alternatives to achieve this important project criteria. Psomas services included land surveying, base map preparation, civil engineering design, mechanical and electrical design, preparation of construction documents, engineer's estimate and bid phase and construction phase support services. CLIENT: City of Coronado YEAR COMPLETED: Ongoing REFERENCE: Katie Odiorne 1 (619) 522-2424 Linda Vista Reservoir and Pump Station Anaheim, CA The Linda Vista complex includes a 4 MG partially buried water storage tank and a 22,600 GPM, dual -zone booster pumping station. The project entailed replacing the aging reservoir with a new 4 MG pre -stressed partially buried concrete tank and pump station improvements The new tank is mostly above ground, raising the tank overflow elevation to 30 feet above ground. Psomas' innovative idea to construct a new pump station pad at the future pump station location, relocate the existing pumps as part of Phase 1 construction, and design the improvements to facilitate adding a pump station building in the future during Phase 2 development, provided an opportunity for the City to maximize return on investment and avoid using funds on a pump station destined for demolition in the near future. The new pump station pad, pump and piping is confi gured for a planned future expansion to a capacity of 27,400 GPM. The new tank site FSOMAS UP No 19 113 Ir.. - cny of sIn1A ana