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City of San Leandro <br /> CIA No. D43CIASAL0001 <br />Attachment II, Page 3 of 9 <br /> <br /> <br /> <br />Figure 2: Site 14.1 Drainage Area <br />Site 14.2 Proposed Project <br />Site 14.2 is located approximately 50 feet north of an ACFCD canal at the corner of Wick’s Blvd <br />and Merced St. The proposed TCD is going to be installed on Alameda County property as well <br />as in the City of San Leandro ROW. Closure of the right turn lane on Wick’s Blvd will likely be <br />necessary for installation and maintenance of the trash device. <br />The proposed TCD will be a diversion structure with a weir that will divert the 1-year, 1-hour <br />treatment flow to an offline hydrodynamic separator (HDS). The weir will reduce system flooding <br />by allowing bypass of flows greater than the 1-year, 1-hour treatment flow. All dry-weather urban <br />runoff and the first flows of wet-weather runoff will be conveyed to TCD 14.2 from a 66” RCP <br />ACFCD owned storm drain. Caltrans runoff flows south from the I-880 interchange at Marina <br />Blvd to a 24” RCP that runs adjacent to Kaiser Way and eventually into the 66” RCP storm drain <br />that is connected to the offline TCD.