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PROPOSALw 4� <br />Civic Center5tormwaterUft5totionRenovation Design Service <br />s <br />address both capacity limitations and operation and maintenance issues. Michael Baker then <br />completed final design of the selected upgrades which consist of. <br />• Removal of three (3) existing VFDs and installing four (4) new PowerFlex 753 VFDs. <br />• Installing new wiring between new VFDs and new motors. <br />• Installing additional digital input and analog output card for PLC <br />• Removal of existing in-line grinder electrical distribution and control panel and wiring. <br />• Removal of three (3) existing pumps and motors and install four (4) new vertical shaft driven <br />dry pit screw type pumps and motors equipped with flywheels. <br />• Removal of three (3) existing in-line grinders and installing 8 -inch diameter suction pipe and <br />eccentric reducers at all four (4) pump locations. <br />• Removal of existing 4 -inch and 6 -inch discharge pipe and valves at three (3) pump locations <br />and replacement with 8 -Inch diameter discharge pipe, plug valves and eccentric reducers at <br />all four (4) pump locations. <br />• Removal of existing 6 -inch swing check valves and replace with 8 -inch non -slam rubber <br />flapper swing check valves. <br />9 Y++'5.5+ .t+;r�LRK <n` iWY.Ha! hNFAiwS?'4#..`7` ' ri.'PSnEa}AY1 3eX3iilS&.:,q.;rNKR'Z.`'PU[ &Nt?bKJFYS?4"IR IIWK0,*.k'ViW45 !r� �.n{M".W" <br />Reconstruction of the Los Alamitos Pump Station and Retarding Basin <br />Orange i Los Angeles Counties, CA <br />Client: County of Orange, 300 North Flower Street, Santa Ana, CA 92703 <br />Reference: Mr. James Volz, Principal Engineer, (714) 647-3904, iames.volz(a�ocaw.ocoov.com <br />Year: 2014 (Construction) <br />Team Members Involved: Sal Sheikh (Structural Engineer), Fabio Sanchez -Duran (Structural <br />Engineer), Karl Meier (Project Engineer); Yee Ping See (Electrical Engineer) <br />Michael Baker provided preliminary and final design, construction support, and commissioning <br />services for the design of a new 800 -cubic -feet -per -second (516 MGD) stormwater pump station <br />with engine -driven pumps to replace an existing pump station facility. The original Los Alamitos <br />Pump Station was constructed In 1958 to pump storm water from low-lying marshlands up to the <br />San Gabriel River. <br />Pump Station. The pump station includes four (4) vertical mixed <br />flow pumps with a design capacity of 129 MGD. Each pump is driven <br />by a 1500 hp dual -fuel engine (natural gas and propane). Engine <br />related components include a compressed air starting system, <br />primary and secondary jacket water cooling system, natural gas <br />primary fuel system, and propane back up fuel system. The pump <br />station also includes a low -flow pump station with submersible pumps in a separate wet well with <br />a total capacity of 5 MGD. <br />Force Main Rehabilitation and Condition Assessment. Each pump discharges into a new 54" <br />force main, which connects to a rehabilitated 54" force main that siphons under the Haynes Steam <br />Plant intake open channel, and discharges to the San Gabriel River. The existing force mains <br />were originally RCP. As part of the project, a condition assessment was performed including a <br />riminvilm <br />IN1i NNNTIONAL 13 <br />25B-35 <br />