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08/28/97 08:52 FAX 6124975411 S P TESTING: INC 41 <br /> ` -P TESTING, INC. Steven B. Schirmers - MPCA Cert.No. 627 <br /> 951 Katydid Lane NE - St. Michael, MN 55376 • (612) 497-3566 <br /> FAX(612)-497-5011 <br /> State License#394 <br /> July 28, 1997 Post-its Fax Note 7671Date ,� r <br /> To ��• P89es <br /> From r .-. <br /> CoMeot. Co. <br /> Joe Thies Phone a Phone#l <br /> rG .��i. <br /> 1180 Willow Rd., North Fax# 4 1?�oS Fax" 4e. 3 <br /> — o t <br /> Orono, Henn. Co., MN <br /> This site has an existing on-site sewage treatment system consisting of a Cesspool and <br /> a drainfiield which is surface discharging in to a road ditch. This system is classified as <br /> failed and is also an imminent health hazard which must be repaired or disconnected <br /> within 10 months. To adequately treat septic effluent, a new system will need to be <br /> installed. <br /> This on-site sewage treatment System is designed for a Type 1, three bedroom home, in <br /> accordance with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. Approval will be needed to be 10' from the north property line with the <br /> system, <br /> A lift pump will need to be installed in the lower level (basement) for all of the water use. <br /> At present, the flow line for the basement is deeper than the flow line for the house and <br /> deeper than the existing tanks. This pipe may just discharge to the ditch. <br /> The existing tank will need to be abandoned, pumped and filled with soil. <br /> The soils on this site are SCS soils mapped - L+B - LoSueur loam, The seasonally <br /> saturated soils were located at 18"to 26" (mottled soil). Due to the seasonally saturated <br /> soils, a Pressurized Mound System will need to be installed to treat septic effluent. The <br /> bottom of the treatment area must be located at least 3' above the saturated soils. <br /> The soils at a depth of 12" (th's#4,5 & 6) have a percolation rate averaging 8.5 mpi. <br /> i <br />