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r <br /> SITE EVALUATION REPORT <br /> FOR THE NORDSTROM PROPERTY <br /> 541 SPRING HILL ROAD <br /> ORONO, MINNESOTA <br /> 5-4-85 <br /> On April 20-27, 1985 four lots were tested for both a primary and an <br /> alternate drainfield site under the provisions of Individual Sewage Treatment <br /> Systems Standards (WPC-40). The other lot in the proposed subdivision is <br /> the existing house. <br /> Lot 1 had an average percolation rate of 12.8 minutes per inch on the <br /> primary site(holes 1-4) and a rate of 10. 7 MPI on the alternate site. With <br /> the lack of a high water table, standard trenches are possible on both sites. <br /> Lot 2 had sand soils and yielded an average percolation rate of 7.8 <br /> minutes per inch on the primary site(holes 1-4) and a rate of 10.0 MPI on <br /> the alternate site(holes 5-6). Again, with the lack of a high water table <br /> standard trenches would be possible. <br /> Lot 3 is the existing house and Lot 4 had an average percolation rate <br /> of 15.5 minutes per inch for the primary site(holes 1-4), and a rate of <br /> 30.0 minutes per inch on the alternate site(holes 5-6).Standard trenches <br /> could be used on both sites also, but the alternate site could have the <br /> trenches no deeper than 2 feet in the natural soil. <br /> Lot 5 had an average percolation rate of 9.6 minutes per inch on the <br /> primary site(holes 1-4) and 7.9 MPI on the alternate site. Because of a <br /> possible high water table these areas were tested shallower for shallow <br /> trench systems in the abundant black loam topsoil. Thus, shallow trenches <br /> would be needed for both sites and interceptor drains would be highly <br /> recommended. <br /> Once a house is proposed, a sp ific system design would be needed. <br /> If any other information is needed 'n the meantime, please contact me. <br /> Sincerely, <br /> PEERRCOR, INC. <br /> Mark S. Gronberg, P.E. `" <br />