06-11-1979 Planning Packet - Laserfiche WebLink

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1 r f "sa »' •>. — a M 1 .' I TO: FROM: DATE: Jeanne Mabusth, Asst. Zoning Administrator Michael P. Gaffron, Septic System Inspector May 31, 1979 SUBJECT:Enervest Builders fAudrey Heiser) #460 Subdivision - 325 West Lake Street Septic System Review Assuming that we adhere to the normal 75' setback from a wetland for the drainfield on this property, approximately 4,500 s.f. of area useful for drainfield remains at the bottom of the hill. This is large enough for one drainfield to be constructed. If the house is placed to meet the legal setback of 50* from the front property line, it is probable that a primary system can be constructed at the top of the hill. However, the well location will also have to be at the top of the hill which further limits the drainfield area. Placement of the house, well, drainfield, and driveway are critical to allowing the site as a buildable lot. A 10' setback from property line to drainfield ^rather than 20') would be necessary for the upper site to be used. If the normal 75' wetland setback is adhered to for the drainfield, I would recommend that the Planning Commission and Council require a definite site plan be approved to ensure that all necessary setbacks and requirements are attainable. The attached site plan shows one of the two logical alternatives. Whoever builds on the lot would be working with a 30% slope at the house location because of the 50' front setback. My gut feeling is that with intelligent planning the lot is buildable and that adequate ^albeit costly) primary and alternate septic systems are feasible. But I also feel that development on this lot and other small lots like it has a high potential for septic system problems because of steep slopes and limited useful area for drainfield. Continued development of these small existing lots will certainly not reduce the possibility of a need for municipal sewer in our rural areas. i