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1 f; <br /> S—P TESTING, INC. Steven B. Schirmers • MPCA Cert.No. 627 <br /> 951 Katydid Lane NE • St. Michael, MN 55376 • (763) 497-3566 <br /> FAX (763)-497-5011 <br /> State License #394 <br /> CITY OF ORONO <br /> February 18, 2002 SEPTICMF Rav" <br /> INSPECTORS <br /> A"RM s,u warnp <br /> xu��4 <br /> Boyer Building Corporation <br /> IMt M6 rt <br /> 10 Willow Dr. So. <br /> Orono, Henn. Co., MN + ' � <br /> This site has an existing on-site sewage treatment system which is classified as non- <br /> compliance according to City records. An addition is proposed for the home which <br /> includes a bedroom. The existing system will need to be replaced. The existing tanks <br /> will need to be abandoned, pumped and filled with soil. <br /> This on-site sewage treatment system is designed for a Type 1, five bedroom home, in <br /> accordance with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. <br /> The soils on this site are a clay loam. The seasonally saturated soils were located at <br /> 20" & 22" (mottled soil). Due to the seasonally saturated soils, a Pressurized Mound <br /> System will need to be installed to treat septic effluent. The bottom of the rock must be <br /> located at least 3' above the saturated soils. <br /> The soils at a depth of 12" have a percolation rate of 8.6 mpi. <br /> A pumping chamber will need to be installed to lift the effluent to the treatment area. <br /> The power supply and switches must be located outside the manhole and pumping <br /> chamber in a weather proof enclosure. A warning device must be installed with a light <br /> and sound device, this is in case of a pump failure. <br /> 1 <br />