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Zoning File #1619 <br />February 14, 1991 <br />Page 2 <br />3. <br />m <br />■0m <br />4. <br />t--' <br />A primary and ilternate drainfield site has been defined for <br />each lot by tie site evaluator. In many cases, these sites <br />are marginal, just meeting or in some cases partially <br />exceeding the maximum slope requirements. Three of the <br />eight sites ifentified are less than the 75' required set­ <br />back from the0.3 acre man-made pond in the center of the <br />property. <br />To the applicBts* credit, drainfield sites were tested and <br />defined prior to drawing the lot lines. However, the <br />extremely ste^ slopes over a great portion of the property, <br />coupled with nttled soils which indicate the need for mound <br />systems for the entire property, severely limit the <br />development c^bility of the property. <br />Two major wetluids exist on the property, both being fairly <br />low in the tcyography. The westerly wetland is about 3 <br />acres, of whidi approximately 2 acres are within Lot 1. The <br />northeasterly wetland is about 1.5 acres, of which <br />approximately i»3 acre is within Lot 3. <br />There is a OJ acre man-made pond in Lot 2. This pond <br />averages abovjc 60' across and about 200' in length. While <br />the area of thspond certainly is not dry buildable land, it <br />does not havenearly the significance in the watershed as <br />the 2 other tetlands. This small pond is not a City <br />designated wetland. Staff would recommend that a <br />Conservation asl Flowage Easement be dedicated on the plat <br />only for the 2major wetlands. <br />There in an isnie of the drainage swale leading north from <br />the probable pond overflow location. This swale will <br />generally be Mjacent to the proposed house site on Lot 2. <br />City Engineer recommends that a channel be designed and <br />constructed wilhin the drainage ear^ement within Lots 1 and <br />2, in order todirect the pond drainage in a positive manner <br />to avoid its affecting the house site. This swale will have <br />to take into Kcount driveway construction for Lot 2 and <br />staff would sapgest that the driveway also be designed in <br />conjunction wi2ti this swale. <br />h atfi aMiMlktfti I