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September 9, 1974 <br />Mr. Lyle Cox <br />5134 Chowen Avenue South <br />Minneapolis, Minnesota 55410 <br />Re: Residential Percolation Test <br />Dickeys Lake - Orono <br />Dear Mr. Cox: <br />545 Indian Mound <br />Wayzata, Minnescfa 55391 <br />(612) 473-4224 <br />On September 3 and 4, 1974 percolation tests were run <br />on your property as shown on the enclosed sketch map. <br />Tests consisted of one soils boring to eight feet in <br />depth and six test holes 24 to 36 inches in depth. <br />Soils encountered (at test hole 6) were topsoil, red <br />sand, gray sandy clay, gray clay and gray clay till. <br />No standing water was observed. <br />Percolation rates nearest the proposed drain field are <br />40 minutes per inch. At this rate the drain field area <br />required is 300 square feet for each proposed bedroom. <br />The proposed drain field shown allows for four bedrooms <br />assuming a trench bottom width of two feet. Percolation <br />rates at the other test holes were half of this or 20 <br />minutes per inch. A dre:n field at the alternate site <br />shown would require a lift station but would need ap- <br />proximately one half the area of the first choice. Top- <br />ographic contours shown are approximate. <br />The stated percolation rate is an average of rates at the <br />locations shown and no guarantee is implied or expressed <br />that these conditions exist for the entire proposed drain <br />field area. <br />If we can be of further help, please advise. <br />Sincerely, <br />EUGENE A. HICKOK AND ASSOCIATES <br />John A. Holmquist U <br />JAH/cmf <br />Enclosure <br />CC: M. Scheller W. H. McCombs,/ <br />