02-19-1991 Planning Packet - Laserfiche WebLink

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r 1- ii; Zoning File #1619 February 14, 1991 Page 7 Lot 1 - the drainfield sites are located on a relatively flat area at the north half of the lot These sites are about 18* vertically higher than the mi^or wetland to the west, and are located on slopes ranging from 2 to 6%. These sites force the house to be located in tie south half of the lot at the edge of the 40% slope lading down to the wetland. The house location further noith on the lot would leave minimal setbacks to the mound systas and require that a driveway be constructed along the 401 slope, leaving a major cut just downhill from the primazf site. Because of the steep slopes and location of septic ^sterns, this lot is severely limited to a single buildahle envelope being approximately 175* in length and rangia^ in width from 50* to 90', 1^ the Planning Commission and Obuncil allow a 30* setback from the east lot line of Lot 1. Lot 2 - has drainfield sites centrally Israted just north of the small pond. The primary site rangesln slope from 4% in the south end to near 9% at the verj north end. The alternate site just to the west averages 6% slope. These sites are located immediately uphill frea the proposed house site. Due to this, and coupled with a ftrainage swale from the pond being located on the west sideof the house, plus the 50* rear setback requirement, this is at best a very poor building site with drainfield sita that are marginal . due to site topography. A further issue with Lot 2 is that a extremely long driveway will have to be constructed to reach the proposed house location. If Outlot B is allowed as a private drive way, the actual driveway length from the proposed house site on Lot 2 to the point of access on Lyan Avenue is 650*. The State Fire Code will likely require ftat the driveway be provide with a turnaround, and be aot less than 20* unobstructed width, hence this will ma]<z a shared driveway on Outlot B just that much tougher to costruct. Lot 3 - contains the existing house whUi has an existing bailing septic system. Both the priary and alternate drainfield sites have been tested on His property. The primary site has a slope of approximatelp 2%, the alternate site has a slope of about 6%. With approximately 40* between the easterly tip of the primaryaound and the east lot line, it might be feasible to relacate the driveway within Lot 3 to a point where it could acess Lyman Avenue within the boundaries of the plat, elimteting the need for a driveway easement on the neighboring property. However, the sight distance for Outlot B's acceia point to Lyman Avenue is already minimal if not unacaeptable, hence an additional access at that location ivy not be a wise decision.