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Roseton Plant Improvements <br />Artesia, CA <br />Golden State Water Company wants to add a 0.75 MG welded steel <br />reservoir, booster station, and backup power generator to the existing <br />plant. Included with the work is the relocation of the Fe/Mn backwash tank <br />and skid mounted recycle pump, and relocation of the MCC for Well No. 2. <br />Engineering Fee: <br />Approx. $320,000 <br />Schedule: <br />Current <br />Key Staff: <br />Tom Epperson, PE <br />Project Manager <br />Neha GaJar, PE <br />Deputy Project Manager <br />Laurence Esguerra, PE <br />Project Engineer <br />Matt Vera, PE <br />Design Engineer <br />Mazen Kassar, PE <br />Electrical/Controls <br />Manager <br />Eric Yuen, PE, SE <br />Structural Design <br />Engineer <br />Reference: <br />Golden State Water Co. <br />Santa Fe Springs, CA <br />Joe Farah, PE <br />562/907-9200 x423 <br />Joe. Farah@gswater.com <br />The existing facilities to remain include Well No. 1 and No. 2, the three bay chemical building, Fe/Mn <br />treatment system, and SCE transformer if it is determined it is adequately sized for the proposed and <br />existing facilities. <br />The booster pump station is to be comprised of four vertical turbine pumps each with a capacity of <br />1,000 GPM against system pressure (with assumed 75 hp motors). The new Welded Steel Reservoir <br />(WSR) shall have a usable capacity of 0.75 MG, with a separate inlet and outlet. The WSR inlet will <br />incorporate an altitude valve to control tank filling with system water. Desired WSR dimensions shall <br />have a maximum external height of 30 feet, an overflow level equal to 26 feet, and a diameter of <br />approximately 70 feet. The groundwater wells will discharge into the WSR following wellhead treatment. <br />Included in the design, will be improvements to fill the WSR from the distribution system via an altitude <br />valve. <br />A backup power supply shall be included which shall comprise of a Cummins diesel powered generator <br />with Tier 4 emissions, sound attenuation suitable for a residential neighborhood, a fuel capacity capable <br />of allowing the generator to operate 72 hours at full load, and an automatic transfer switch (ATS). The <br />generator shall be capable of operating: one groundwater well pump; four booster pumps; Fe/Mn <br />treatment system; SCADA and plant controls; and ancillary power needs. The sizing of the generator, <br />fuel capacity and ATS will be coordinated with Cummins. Electrical services include evaluation of the <br />proposed loads and determination if the existing SCE service will be sufficient to accommodate <br />improvements. <br />TETRA TECH <br />