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M E M O R A N D U M <br />Ap; File <br />BROM: Jane Zimme�man <br />DATE: January 13, 1994 <br />&OBJECT: West Mall Apartments, Detention and <br />Stormwater Quality Enhancement <br />With reqards to review of this project: <br />- The biofiltration swale treating runoff from the <br />driveway areas does not meet city standards. However, <br />treatment of runoff from the paved areas is not required per <br />city standards because the uncovered paved area is less than <br />10,000 square feet. Thereiore, the applican= has not been <br />required to design a swale that meets city standards. <br />- The infiltration system designed to detain runoff from <br />the drivei+ay areas does not meet city standards. Hcwever, <br />the coinbined stormwater release of t:ze detention veult <br />release plus the undetained runoff from the drivaway areas <br />is less thar, the city's allowable detention release for the <br />25 year stor.n as calculated using city methods. Therefore, <br />detention of the driveway areas is not required per city <br />standards, and the infiltration system provided does not <br />need to meet city standards. <br />