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MEMO T0: Mayor and City Council <br />FROM: Director of. Public works/Community Development <br />DATE: March 31, 1983 <br />SUBJECT: BRONSON DRIVE AND COUNTY N <br />SURFACE WATER COUNTYYROAD 12EPHEN STREET BETWEEN <br />(TH 10) <br />letter <br />15areviewedStff has <br />homeownersalongtSt.he dStephen Street rainage ndated eFebruarysseina18, 1983f(am <br />copy is attached). <br />The area in question has no catchbasins or storm sewer in place in <br />the street. The street (see sketch of drainage area) drains to a <br />low point centered on the lot line between lots 12 and 13 (5315 and <br />5307 St. Stephen) Block 5, Pinewood Terrace No. 2. A 15 foot drainage <br />easement is centered on the lot line and extends 400 feet to the low <br />wetland lying westerly of the homes (see attached copy of a portion <br />of the plat map). A drainage swale was constructed from the street <br />to near the rear lot lines but does not appear to extend any further <br />west into the low area. The drainage swale does have a minimum slope <br />to the west (see attached sketch) to near the rear lot line. The <br />swale does show evidence of having silted in over the years. The <br />swale appears to function under normal runoff conditions. But during <br />hen the ground is frozen and snow is piled along <br />spring snow melt, w <br />the edge of the street, the drainage swale will not function and water <br />will accumulate in the street and adjacent driveways and front lawns. <br />City personnel have observed this section of street completely covered <br />with water. <br />A storm sewer constructed in1964 along the rear lot was not extended <br />to St. Stephen Street. The position of the manholes with solid lids <br />does not allow catchment of the surface waiver runoff (s__h sketch <br />locating existing 21 inch storm sewer). <br />Review indicates the following courses of action: <br />1) Do nothing. <br />2) Clean and regrade drainage swale to insure better drainage <br />to low land. If swale was regraded to sufficient width <br />then the City snow blower could clear a path during the <br />winter months. Estimated cost is $6,500.00. <br />3) Clean swale from street to near existing 21 inch storm sewer <br />and construct $1,000.00 to $2,000.00 catch basin. <br />4) Construct catch basins in St. Stephen and run a new storm <br />sewer pipe to existing 21 inch storm sewer. Estimated cost <br />is $7,500.00. <br />Staff requests the Council to give direction on request by residents to <br />resolve this concern. <br />Ru µ� <br />Mments <br />