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S-P TESTING, INC. Steven 8. Schirmers -MPCA Cert. No. 627 <br />951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566 <br />November 19, 1994 <br />Mark Harrington <br />4080 Bayside Rd. <br />Orono, Henn. Co., MN <br />This site has an existing Pressurized Mound System for a 3BR home. <br />The system will be increased for a SBR home. <br />The mound will be added to at each end of the rock bed. The <br />existing mound will need the topsoil removed to the washed sand <br />with a backhoe with no travel on the mound. The tank capacity <br />will require an additional 1000 gallon holding tank. The pumping <br />chamber is a 1000 gallon capacity which meets City code for minimum <br />capacity. Recommend to reshape and divert the run off away from <br />the pumping chamber. <br />The future expansion is on 7% to 9% slope & will need approval <br />by the City Official. <br />The soils at a depth of 12" have a percolation rate averaging <br />2.9 min/inch. <br />All neighboring wells are located greater than 100' away from the <br />proposed treatment area. <br />Keep all heavy equipment off of the proposed treatment area before <br />and after construction. The treatment area should be marked off <br />before construction. This Design is not valid & the system will <br />need to be relocated if failure to protect the areas proposed <br />for On-Site Sewage Treatment occurs. <br />With proper installation and maintenance, this system should have <br />no problem in treating septic effluent effectively. <br />Nothing other than gray water (laundry, showers, etc.) human waste <br />& toilet tissue should be disposed into the septic tanks. Garbage <br />disposals are not recommended. Excessive amounts of soaps, cleaning <br />agents & chlorine agents may kill the bacteria needed to treat <br />septic effluent. Additives are not recommended. Recommend to pump <br />& clean your tank through the manhole by a certified pumper every <br />year if you have 1 tank and every 2 years if you have two tanks. <br />C: 7/--g, ~ <br />~~B. Schirmers <br />SBS/ds <br />0