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Ly 8, 1979 <br />545 Indian Mound <br />Wayzata, Minnesota 55391 <br />David Nitz Company (612) 473-4224 <br />1989 Fogerness Point Road <br />Wayzata, Minnesota 55391 <br />Re: Lot 2, Block 3 of 'avid Nitz subdivision, Orono, MN <br />Dear -Mr. Nitz: <br />The drainfield information was based on percolation tests <br />and soil borings performed in April 1979. <br />The soils on the site include Lester silty cam. The <br />average percolation rate for the primary f.L_ld is 22.1 <br />minutes per inch and 14.3 minutes per inch for the secon- <br />dary field. The locations of the percolation test holes, <br />soil borings, and the proposed drainfield areas are indi- <br />oated in Figure 1. The individual percolation raters are <br />,, <br />given in Table 1 and the soil boring logs are given in <br />Table 2. <br />Because of the high water table a shallow trench system <br />• <br />with pressure and gravity distribution is recmmended for <br />the site. I have enclosed plans and specifications for <br />such a system (Figures 2-4). <br />Stated percolation rates are averaged for the locations <br />shown and no guarantee is implied or expressed that these <br />conditons exist for the entire area. <br />If you have any questions, please feel free to call. <br />Sincerely, <br />E. A. HICKOK AND ASSOCIATES <br />Larry L. Johnson <br />Geologist <br />LLJ:crs <br />0 <br />