Laserfiche WebLink
L TESTZNGP ZNC. Steven S. Schirmers — MPCA Cert. No. 627 <br />951 Katydid Lane NE * St. Michael, MN 55376 • (612) 497.3566 <br />December 21, 1992 <br />Dick Lyman <br />715 North Ferndale Rd. <br />Orono, Henn. Co., MN <br />This On -Site Sewage Treatment System is Designed for a Type 1, four <br />bedroom home in accordance with the Minnesota Pollution Control <br />Agency Chapter 7080 and local ordinances. <br />The soils on this site are SCS soils mapped - NeB - Nessel loam. <br />A seasonally high water table was located at 22" & 280, (mottled <br />soil). Due to the seasonally high water table, a Pressurized <br />Mound System will need to be installed. The bottom of the rock <br />bed must be located at least 3' above the seasonally high water <br />table. <br />This site has an existin- failing system due to the high water <br />table on this site. The existing system was not found. The <br />existing tanks may be used upon approval by the local Inspector. <br />The tanks must be solid. <br />The soils at a depth of 12" in TH's#1 & 2 have a percolation rate <br />averaging13.9 min/inch. Th#3 has a percolation rate of 120.0 min/inch. <br />The absorption area will need to be 50' in this area. <br />A pumping chamber will need to be installed to lift the effluent <br />to the treatment area. <br />The manifold and supply line pipe must have back drainage to the pumping <br />chamber. The distribution pipes shall have their ends capped. Be sure <br />the rock and sand fill material are clean. The sod layer below the <br />entire mounded area must be turned over, just break up the sod, be sure <br />not to over work. <br />The power supply and switches must be located outside the manhole and <br />pumping chamber in a weather proof enclosure. A warning device must <br />be installed with a light and sound device, this is in case of a pump <br />failure. Mercury floats are a good method. <br />CONT'D <br />