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recommended redevelopment of the production well; replacement of all four engines with a newer, comparably sized natural gas engine with LPG fuel for back-up; replacement of the booster pumps with newer comparably sized pump assemblies; replacement of the well pump; and minor revisions to the building enclosures. Upon approval of the Preliminary Design Report, two separate contract documents were prepared to carry out the recommendations from the report. The first is for redevelopment of Well No. 22, which included disassembly of the natural gas engine, drive shaft, and right angle gear drive; removal and reconditioning of the well pump; light swabbing of the stainless steel well casing; water quality testing; chlorination; and reinstallation of pump and appurtenances. The second contract document was for rehabilitation of the West Garden Grove Booster Pumping Facility. Additional items added into the contract documents included replacement of the liquid propane tank and vaporizers; replacement of oil and water separators in the drain system; replacement of engine cooling water piping system; replacement of fuel lines; incorporation of exhaust fans on building roof system; and provisions for structurally reinforced openings on the roof system for future removal of booster pumps. Construction Management services included coordination with permitting agencies, utility coordination, resident engineering and inspection. Psomas also served as the designer on this project. CLIENT: City of Garden Grove YEAR COMPLETED: 2015 REFERENCE: Samuel Kim i (714) 741-5534 Westhaven Booster Pump Station Garden Grove, CA The City of Garden Grove's Westhaven Booster Pump Station has, since 1970, pumped potable water from two buried 10 MG water tanks to the City's distribution system using three 150-hp natural gas engine driven booster pumps. A 250-hp natural gas engine driven well pump delivers water to the two reservoirs. The City selected Psomas to design and provide construction management services for a project to replace the existing booster pumps and gas engines with electric motors, maintaining the current pump station discharge capacity, and replace the existing well pump engine with an electric motor. The Westhaven Pump Station is a critical facility, so conversion of the station from natural gas to electric power required the addition of a new concrete masonry unit building next to the existing pump station to house a permanent emergency engine generator set and the electrical panels and switchgear. The architectural style of the new building was designed to match the existing building, including a breezeway arch between the buildings with a mansard roof. The project included a variety of vault, conduit, piping, valves, flow meters, controls, and instrumentation replacement and repair items to update the facilities and repair deficiencies. CLIENT: City of Garden Grove YEAR COMPLETED: 2016 REFERENCE: Samuel Kim 1 (714) 741-5534 arP 40 19 113 - _ i City of sanf3 ka PSOMAS