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t ' <br /> S-P TESTING, IN 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 /> ORONO COPY SEPTIC PERMIT/�'�AN� R IE <br /> August 11, 2010 INSPECTOR ,�A✓a✓�11u�c. <br /> IAT -10^«PERMIT NO. <br /> APPROVED AS SUBMITTED <br /> El APPROVED WITH CORRECTIONS AS NOTED <br /> Jim Henninger NOT APPROVED-CORRECT&RESUBMIT <br /> 1335 Orono Oaks Dr. These comments aro for your information. All work shall be done <br /> In full compliance with all applicable septic and zoning code. <br /> Orono, Henn. Co., MN Requirements including items not specifically noted in this review. <br /> KEEP THIS PLAN SET ON SITE AT ALL TIMES <br /> This siste has an existing trench system built in 1987 & is on record at the City of <br /> Orono as non-compliant. <br /> The existing 2-1000 gallon septic tanks were installed in 1979. The pumping chamber <br /> to the existing system was installed in 1987. The existing septic tanks will be <br /> abandoned, pumped &filled with soil. Install a new 1000 gallon septic tank and use <br /> the existing pumping chamber as a 2nd septic tank & install a new 1000 gallon <br /> pumping chamber at a lower elevation to allow back drainage of the supply line. <br /> This on-site sewage treatment system is designed for a Type 1, three bedroom home, <br /> in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. ORONO COPY <br /> The soils on this site are a clay loam. The periodically saturated soils were located at <br /> 26" & 34" (redox features). 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 34.3 mpi. Percolation test#2 has <br /> a higher percolation rate than #1. The may have been caused from when the existing <br /> system was installed. Recommend a minimum of a 12" rough up on the west 1/3 of the <br /> proposed mound absorption area. <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 /> ft' chamber in a weather proof enclosure. A warning device must be insfai•led with a light <br /> and sound device, this in case of a pump failure. <br /> ORONO COPY 1 VISMISIESteene <br />