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TO; Jeanne A. Habusth, 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 soil <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 />- Alteirnate site - slope 8% - mottling at 3.5* - water <br />table at 3.6* - modified shallow trenches*- Maximum