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Lift Station Emergency Storage Basin <br />Rancho Santa Margarita, CA <br />CLIENT CONTACT: Santa Margarita Water District <br />26111 Antonio Parkway Rancho Santa <br />Margarita, CA 92688 1 Jaime Aguilar, <br />Senior Project Engineer 1949.459.6582 <br />YEAR COMPLETED: Ongoing <br />KEY PERSONNEL: Joseph Boyle I Nancy Baker <br />Krista Kausen I Jennifer Marks <br />SUBCONSULTANTS:Arcon <br />Psomas provided engineering services for the <br />design of an emergency storage basin (ESB) <br />for Santa Margarita Water District's (SMWD's) <br />Coto de Caza Lift Station. SMWD has a policy <br />to install ESB's at each of its lift stations. The <br />purpose of the ESB is to contain wastewater <br />from overflowing into the surrounding area during <br />an emergency event. The ESB was designed <br />to provide storage volume for three hours of <br />average daily flows. The ESB is a reinforced <br />concrete structure approximately 45 feet by <br />45 feet with a depth of 30 feet. The ESB was <br />designed with three chambers. Submersible <br />pumps in the first chamber pump into the second <br />chamber with gravity flow from the second <br />chamber to the third chamber. Key design <br />features include design of the cast -in -place <br />concrete ESB; submersible pump selection; <br />coordination of an existing SDG&E power supply <br />line relocation; construction of a retaining wall <br />and concrete drainage Swale between the ESB <br />and access road; access improvements to allow <br />a tanker truck access to the ESB; and design <br />of overflow pipeline, drain pipeline and sluice <br />gates. Psomas' scope of services includes <br />preliminary and final design; construction <br />plans, specifications, and estimates of probable <br />construction costs; and engineering support <br />during construction. <br />On -Call District Engineering Services <br />Trabuco Canyon, CA <br />CLIENT CONTACT. Trabuco Canyon Water District <br />32003 Dove Canyon Drive <br />Trabuco Canyon, CA 92679 <br />Lorrie Lausten, Associate Engineer <br />949.858.0277 ext. 130 <br />YEAR COMPLETED: Ongoing <br />KEY PERSONNEL: Michael Swan I Kimberly Alexander <br />Since 2003, Psomas has provided on -call <br />hydraulic modeling of the District's water system. <br />The model has been used to determine capital <br />improvement requirements for numerous <br />proposed developments over the years including <br />testing fire flow. Most recently, modeling was <br />performed to determine optimum hydraulic/ <br />operational parameters for a proposed upgraded <br />booster pump station and new reservoir, <br />including testing reservoir turnover using <br />extended period simulation techniques. <br />LF REFERENCES <br />City of El Monte <br />11333 Valley Boulevard, El Monte, CA 91731 <br />Lee Torres, City Engineer 1626.580.2055 <br />ltorres@elmonteca.gov <br />A description of the City of El Monte's projects <br />is on page 71 <br />Rossmoor/Los Alamitos Area Sewer District <br />3243 Katella Avenue, Los Alamitos, CA 90720 <br />Sarah Borbon, General Manager 1562.431.2223 <br />LosAlSewerDistrict@gmaii.com <br />A description of the District's project is on <br />page 72 <br />Yorba Linda Water District <br />4622 Plumosa Drive, Yorba Linda, CA 92885 <br />Rosanne Weston, Engineering Manager <br />714.701.3100 1 rweston@ylwd.com <br />A description of the District's project is on <br />page 72 <br />