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JL f Mr. George Rose w December 19,2001 Page 3 Parcel,Perc.Test Size Percolation Depth-of Date of Soil Type Name Rate Test Test at Test Depth Parcel 25,deep 2.I0 acres <1.67 min/in 12.0 ft 11/21/01 Brown sand with silt. / Parcel 26,shallow 2.11 acres Fail 32 ft ' 12/5/01 Brown sandy/clayey silt. Parcel 26,deep 2.11 acres <1.67 min/in 7.0 ft- 11/27/01 Brown sand with silt. "Parcel 27,shallow 2.51 acres 13.9 min/in 3"0 ft 12/5/01 Brown sandy silt_ . ��. Parcel 27,deep 2.51 acres 1.7 min/in 4.3 ft 11/27/01 Brown f--m sand_ v YO/I Parcel 28,shallow 2.32 acres Fail 3.4.ft 12/5/01 Brown sandy silt. ��{ !a Parcel 28,deep 2.32 acres 5.5 min/in 9.9 ft '11/27/01 Brown f-m sand. . Ale- Parcel 1,shallow 10.51 acres Fail 3.0 ft 1216/01 Brown silty sand. • Parcel 1,deep 10,51 acres <1.67 min/in 4.0 ft 11/28/01 Brown f=m sand. }� Parcel 2,shallow. 10.39 acres Fail.. 3:0 ft 12/6/01 Brown sandy silt. Parcel 21 deep 10.39 acres 1.54 min/in 4:3 ft 11/28/01 Brown Urn sand. G Parcel 3,shallow 10.35 acres Fail 3.2 ft 12/6/01 Brown f_m sand with silt. Parcel 3,deep 10.35 acres 3.3 min/in, 6.3 ft 12/5/01 Brown f-m"sand. Remainder,shallow 10.78 acres 4.3 minlin 3.2 ft 1216/01 Brown sandy silt. Remainder,deep 10.78 acres <1.67 min/in 6.0 ft 12/5/01 Brown f-m sand. . The percolation rate was found to be satisfacto in all of the deep percolation tests.: Five of the twelve shallow tests achieved a,satisfactory percolation rate.The permeable deep layer typically consists of sand, and bounded by less permeable layers. The surface soils were found to consist of lower permeability soils however several tests indicate a satisfactory percolation rates can be achieved in the shallow zone alone. Due to the heterogeneous soils encountered,the deep depth to ground water,clayey surface soils,we do not believe that the rapid pereolation-rate will cause a buildup of nitrates in ground water above 10-mg/L-N. This issue was discussed in more detail in the Addendum letter dated November 27,2000. Summary After a review ofprevious work conducted at the site and work completed during this effort,we have concluded that the new parcels are suitable for use with aseptic system using leach lines and seepage pits. The soil suitability/nitrate Ioading study,datedOctober 12,200.0, indicates a development density of 2.0- acres or greater is suitable for the area and will not cause a buildup of nitratesin the ground water above safe drinking water levels established by the Enviromnental Protection Agency (EPA). All the new lots are Z " " t