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� <br /> . <br /> . ; � <br /> . <br /> Tandem Properties � �� <br /> Lot 14 , Block 1 " <br /> Coffin Site <br /> Orono, Henn. Co. , MN <br /> ���d�� <br /> This Or�-Site Sewage Treatrr�ent System is Designed for a Type 1, five <br /> bedroom home Designed in accordance with the Minnesota Pollution - <br /> Control Agency Chapter 708C and local ordinances . <br /> The soils on this site are SCS soils mapped - LrII - Lester loam. <br /> A seasonally high water table was located at 12" to 30" , (mottled <br /> soil ) . Due to the seasonally high water table, a Pressurized <br /> Mound System will need to be installed. The bottorn of the rock <br /> bed must be located at least 3 ' above the seasonally high water <br /> table. <br /> The soils at a dep�l� of 12" have a percolation rate averaging <br /> 9 . 8 min/inch. <br /> A �umping criar��ber will need to be installed to lift the effluent <br /> to the treatment area . <br /> The manifold and supply lir�e pipe must have back drainage to the <br /> pumping chamber. The distribution pipes shall have their ends <br /> capped. Be sure the rock and sand fill material are clean. The <br /> sod layer below the entire mounded area must be turned over, just <br /> break up the sod, be sure not to over work. <br /> The power supply and switches must be located outside the manhole <br /> and pumping chamber in a weather proof enclosure. A warning device <br /> must be installed with a light and sound device, this is in case of <br /> a pump failure. (mercury floats are a good method) . <br /> All neighboring wells are located greater than 100 ' away from the <br /> proposed treatment area. <br /> CONT' D <br />