25B - AGMT STORMWATER LIFT STATION

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PROPOSAL Civic Center 5tormwaterUftStationRenovatianDesign Sarvices . , CCTV Inspection and concrete core samples taken out of the manhole structure. The assessment found that the existing force mains were in sufficient condition for rehabilitation instead of complete replacement. The final design included a structural CIPP liner for each force main. Electrical and Instrumentation. Electrical and instrumentation design was provided for the entire pump station including the submersible pump station, compressed air, cooling system, fuel systems, building lighting and HVAC. The design also Included a 280 kW generator to back up loads at the pump station except for the main pumps, which have a separate propane back up system. Structural. Structural design was provided for the 130' by 55' building wf ; , with separate rooms for the engine, electrical equipment, compressed �_..: air, and storage. Reinforcement for the roof accommodated a 5 -ton `r bridge crane lifting system that reaches all areas within the engine room. Design also included a 30' deep main wet well separated by bay walls for each pump, a low flow wet well, and an inlet apron to transition to the retarding basin. Site Civil Design and Phasing. Site civil design included design of paving, grading, drainage, access roads, and yard piping. Design also Included locating equipment such as a generator, propane tanks, air receiver tank, storage building, electrical equipment, and a storage building. Constraints of the site civil design included working around an environmental wetland, keeping the existing pump station in service, an existing overhead transmission line going through the site, and fire department access requirements Architecture and HVAC. Architectural and HVAC design was provided to meet the requirements of the County of Orange, City of Long Beach, and City of Seal Beach. The building included masonry walls with stucco finish, and a tiled roof facing the nearest residents. Ventilation design includes a series of 12 exhaust fans. Construction Support and Commissioning. Extensive construction support was provided by the Michael Baker team in the form of shop drawing reviews, RFI responses, regular meetings, and construction observation. Some of the biggest issues that came up during construction were complying with fire department requirements, and environmental permitting requirements. Commissioning services were provided to assist the County with setting the requirements for starting up the pump station and making it fully operational. Additional Support. There was a myriad of other critical support services provided on this project that all contributed to the success of the project, including multi -agency permitting and coordination, CEQA compliance, regulatory permitting (Army Corps, Department of Fish and Wildlife, RWQCB), survey, landscape design, stormwater compliance, geotechnical, physical modeling, dry utility coordination, acoustical analysis, and public outreach. comm— IRTCNNRTIOX,IL 14 25B-36