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MEMO TO: Mayor and City Council <br />' FROM: Public Works/Community Development Director <br />DATE: June 2, 1983 <br />SUBJECT: REPORT ON EROSION AND SEDIMENT CONTROL AND DETENTION <br />BASTN SYSTEMS TNSTTTUTE <br />The week of May 16 - 20, 1983 I attended a two part program at <br />Madison, Wisconsin. The first two days covered Erosion and <br />Sediment Control in Urban Areas. Attached is a copy of the <br />course schedule and topics. The various presenters commented <br />that the state of the art in erosion control is fairly limited <br />in urban areas due to enforcement or regulating problems. <br />Typically, enforcement is done through nuisance ordinance methods. <br />It was recommended that communities look at control by: <br />a) Limiting erosion "potential", i.e., limit time for <br />"bare" soil exposure during construction. <br />b) Limit the amount of soil that can leave site before <br />penalties are enforced. <br />c) Limit amount of soil that can be displaced by erosion. <br />Method a) is relatively easily regulated but methods b) and c) <br />are quite difficult. <br />Attached is a copy of Erosion Control Ordinance developed by <br />Madison, Wisconsin and a copy of guidelines issued to applicants <br />and/or staff. <br />The second part of the program concerned the design and use of <br />detention basin systems. Attached is a copy of course outline <br />and the section on"Philosophy for Detention Basins" which relates <br />the experiences in Atlanta, Georgia. The course focused on how <br />not to repeat problems encountered in Atlanta. At the conclusion <br />of the program I am even more convinced that the "existing" <br />Mounds View system can be made to function in an acceptable <br />fashion by utilizing as many of our natural or existing detention <br />areas, such as, streets, wetlands, parks, parking lots, roof tops, <br />and back yard depressions. <br />JCJ/pf <br />G' <br />