Agenda Packet Cc - regular meeting 1/11/1988

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HilbelinkjVogt - Site Evaluation for Proposed Subdivision December 22, 1987 Page 3 of 5 Lot. , 3 , P lock, 1 Both tested sites require mound systems. The soils mapped are Lerdal loam and D.Andas silt loam, both with expected seasonal water tables at 2'-3' below the surface, consistent with the boring information submitted. The tested sites are generally at the north side of the lct, leaving fairly good flexibility for house placement. Lot 4, Block 1 The tested sites both require mound systems. The house will have to be somewhat centrally located on the lot since the drainfield sites are on either side. Lot 5, Block 1 The tested sites are side by side and located at the northwest corner of the lot. Both sites will need mound systems. The mapped soil type is Dundas silt loam, which would normally be expected to require mounds. Lot 6. Block 1 Based on the soils map and topography, the soils on this site are eith^r fairly good or very poor. About 1/3 acre of Lester loam is located at the southwest corner, then drops off to a marginally suitable Glencoe silty clay loam with seasonal water table near the surface. The tested drainfield sites are close to the proposed house site and severely restri.,t the potential house site and configurations. The secondary site would appear to be less than 75' from the boundary of the designated wetland; however, this is not the type of wetland with cattails and open water but is a collection drainageway, hence the 75' setback is critical only as it relates to the ditched area. This lot leaves much to be desired; if approved as is, the house site would be very, _very limitgd. I suggest moving the road to the south to create a better building envelope. Lot 7� ,Block 1 Primary site is OK and appears it w' 11 meet 75' from ditch area. The alternate site is in a swale and is a poorly located site. Additional information required: test a new alternate site at the rear of the lot on higher ground.