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TO: Jeanne A. Mabusth, Zoning Administrator <br />FROM: Michael P. Gaffron, On Site Manager <br />DATE; June 15, 1983 <br />SUBJECT: Proposed Subdivision for Willow Properties, <br />Gary Peterson - Soils and Site Investigation <br />Review <br />I have reviewed the ten proposed lots and wish to make the <br />following comments: <br />Based on the Hennepin County Soil Survey, soils on <br />this property include Lester loams and clay loams, <br />Hayden loams, Hamel loams and LeSeur loams, as <br />well as a good deal of marsh. Tested sites are <br />located on the higher, better-drained soils. Some <br />areas of sandy soil were reported on the most <br />easterly lots. Based on the soils and water table <br />data submitted, shallow trench or standard trench <br />systems appear suitable for all lots. Following is <br />a summary of the soils data for each site: <br />Lot 1 Block 1 - Percolation Rate Average 22 MPI both <br />sites <br />- Primary site - slope 5% - mottling at 3.5' - water <br />table at 3.5' - modified shallow trench system* <br />Maximum Trench Depth 6" into original soil <br />- Alternate site - slope 8% - mottling at 4.0' <br />Water table at 4.9' - shallow trench system - maximum <br />trench depth 12" into original soil <br />Lot 2 Block 1 - Percolation Rate Average 18 MPI both sites <br />- Primary site - slope 7% - mottling at 4.2', 5.0' - water <br />table at 4.5', 5-5' - shallow trenches - Maximum Trench <br />Depth 14" into original soil. <br />- Alternate site - slope 8% - mottling at 3.3' - water <br />table at 3.3' - modified shallow trenches* - maximum <br />trench depth 4" into original sc.’.I <br />Lot 3 Block 1 - Percolation Rate Average 23 MPI both <br />sites <br />- Primary site - slope 10% - mottling at 4.0', 4.5' - <br />water table at 4.0', 5.5' - shallow trenches - <br />maximum trench depth 12" into original soil <br />- Alternate site - slope 8% - mottling at 3.5' - water <br />table at 3.6' - modified shallow trenches*- Maximum