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Transbay Pump Station <br />Evaluation/Rehabilitation <br />Coronado, CA <br />Psomas was retained by the City of Coronado, <br />as part of their as -needed contract, to prepare <br />a preliminary design report and construction <br />plans for the Transbay Sewer Pump Station. <br />The Transbay Pump Station was constructed <br />in 1971 and pumps the sewage received from <br />all residential, commercial, and military facilities <br />(e.g. North Island, and the Naval Amphibious <br />Base) within city limits and discharges to the City <br />of San Diego wastewater system. <br />The pump station requires upgrades and/or <br />repairs to various project features, including: <br />■ Evaluation of concrete drywell structure in <br />visible areas to identify cracking and spalling <br />for repair <br />■ Replacement of wet well liner <br />■ Replacement of wet well access manhole lid <br />with a gas -tight access hatch <br />• Evaluate condition of existing pumps versus <br />performance requirements <br />■ Replacement of all suction, discharge and <br />header valves in dry well and force main valves <br />on site (gate valves, plug valves, check valves <br />and air release valves) <br />• Evaluation of pump system curves <br />• Installation of new flow meter and vault <br />• New monorail system in the pump room <br />One of the major goals of the City is continued <br />operation of this critical pump station during <br />construction of the proposed upgrades. Psomas' <br />scope of services includes evaluation of various <br />sewage bypass alternatives to achieve this <br />important project criteria. <br />Psomas services included land surveying, base <br />map preparation, civil engineering design, <br />mechanical and electrical design, preparation of <br />construction documents, engineer's estimate and <br />bid phase and construction phase support services. <br />CLIENT: City of Coronado <br />YEAR COMPLETED: Ongoing <br />REFERENCE: Katie Odiorne 1 (619) 522-2424 <br />Linda Vista Reservoir and <br />Pump Station <br />Anaheim, CA <br />The Linda Vista complex includes a 4 MG <br />partially buried water storage tank and a <br />22,600 GPM, dual -zone booster pumping station. <br />The project entailed replacing the aging reservoir <br />with a new 4 MG pre -stressed partially buried <br />concrete tank and pump station improvements <br />The new tank is mostly above ground, raising the <br />tank overflow elevation to 30 feet above ground. <br />Psomas' innovative idea to construct a new pump <br />station pad at the future pump station location, <br />relocate the existing pumps as part of Phase 1 <br />construction, and design the improvements to <br />facilitate adding a pump station building in the <br />future during Phase 2 development, provided <br />an opportunity for the City to maximize return <br />on investment and avoid using funds on a pump <br />station destined for demolition in the near future. <br />The new pump station pad, pump and piping is <br />confi gured for a planned future expansion to <br />a capacity of 27,400 GPM. The new tank site <br />PSOMAS RFP No. 19-118 I On -Call Wal�l�scorQtion Management and Inspection Services I City of Santa Ana <br />