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Mayfair Park Stormwater Capture Project <br />Lakewood, CA <br />EXPERIENCE <br />Tetra Tech was contracted by the City of Lakewood to evaluate and design <br />a Caltrans funded Stormwater and Runoff Capture Project at Mayfair Park <br />in Lakewood. <br />Tetra Tech provided a Project Engineering Study Report (PESR) that <br />included all necessary site investigation, hydrology and hydraulic, water <br />quality data and analyses and geotechnical investigation for deep <br />infiltration to provide a recommendation for treatment train selection and <br />implementation. <br />The Mayfair Park project consists of an air -inflated rubber dam diversion <br />system to redirect all urban runoff and stormwater runoff from the Del Amo <br />Channel through a pre- treatment system to remove trash, debris, and <br />sediment. A pump station and drainage pipeline will convey the water into a <br />large, buried multi -chambered storage/infiltration facility. <br />The stormwater collected in the underground reservoir will be treated and <br />used to irrigate the park's landscaped areas, discharge to the sanitary <br />sewer and additional filtration for discharge back to the channel. The <br />system will monitor the weather conditions and the facility through a <br />secured cloud- based system. <br />The goal of the project is to not only help the City comply with the metals <br />Total Maximum Daily Loads (TMDLs), as presented in the Los Cerritos <br />Channel Watershed Management Program, but also provide additional <br />benefits, such as revitalized park infrastructure and augmentation of local <br />water supplies. As one of the first cities to receive stormwater funding to <br />support Caltrans with stormwater compliance units, the success of this <br />project will be a model for other agencies to follow. <br />City of Santa Ana <br />29 TETRA TECH <br />