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MEMO TO: Planning Commission <br />FROM: Director of Public Works/Community Development <br />DATH,: August 17, 1983 <br />SUBJECT: DYNAMIC DESIGNERS 8-PLEX DRAINAGE PLAN <br />I have reviewed the drainage plan dated August 15, 1983 (see <br />attached letter and plan) submitted by Hedlund Engineering <br />Services, Inc. The plan proposes to discharge all impervious <br />areas to the parking lot and to store 3,950 cubic feet of runoff <br />in parking lot and 420 cubic feet in an underground storage <br />tank. The parking lot and tan: outlet will control the rate of <br />discharge and provide an nil and debris skimmer. <br />This proposal will meet the requirements of 49A. <br />The wetlands permit and development agreement should state that <br />all maintenance of drainge structures shall be the responsibility <br />of the property owner. The plan also should show route of <br />emergency overflow in the event of blockage of pipe or winter <br />freeze up. <br />The flood plain conditional use permit should note proposed base- <br />ment elevation of 903.8 which is below the required 905 regional <br />flood elevation. Therefore, foundation shall be flood proofed <br />per State Building Code requirements. <br />JCJ/bc <br />Attachment <br />