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Hakanson Anderson Associates Inc. <br />222 Monroe Street, Anoka, Minnesota 55303 EuMm J. Hakanan, P.E. <br />6121427-500 JanM M. Winter, R.L.S. <br />engineers rs and snrrveyon Lawrence 0. K n ilm , P.E. <br />Peter R. Reetikka, P.E. <br />March 6, 1986 <br />VarwEeckhout Building Corp. <br />Attn: Chuck VanEeckhout <br />15500 Wayzata Boulevard <br />Wayzata, MN 55391 <br />Dear Chuck: <br />At your request a site evaluation to determine soil suitability for an <br />on -site sewage treatment system was performed at Lot 6, Block 1, The <br />Nursery in the City of Orono, Minnesota. Standard methods of percola- <br />tion testing were employed. Elevations are relative to an assumed <br />elevation of 100.0 based at the center of the Devlin Lane cul-de-sac <br />(see enclosed sketch). <br />This report includes: <br />1. Soil boring logs <br />2. Percolation test results <br />3. Testhole location and septic system configuration sketch <br />4. Septic system design specifications <br />5. Discussion and recommendations. <br />The soil boring logs show that silt loam to sandy clay loam topsoils <br />overlie sandy clay subsoil horizons. A discontinuous silty medium <br />sand subsoil horizon was encountered at Borehole #1. Soil mottling <br />and gleying begin at 1.5 to 2.0 feet depth at the boreholes. Soil <br />mottles (spots of contrasting color) are accepted indicators of <br />periodic saturation in soils. Gleying (dull gray soil color) form in <br />soils which are saturated and in a chemically reduced condition for <br />long periods of time. Ground water was measured at elevation 103.3 <br />and 101.1 at Boreholes #1 and #5, respectively on March 6, 1986. <br />civil • municipal a planning • soils a laid sureryir a lalkisrape, architecture <br />