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NG "P l ES TI INC. Steven B. Schirmers • MPCA Cert.No. 627 951 Katydid Lane NE • St. Michael, MN 55376 • (763) 497-3566 CITY OF ORONO FAX (763)-497-5011 SPPTIC ER N EW State License #394 INSPECTO April 29, 2008 DAT a PERMIT NO. APPROVED AS SUBMITTED Carmen Coyle APPROVED WITH CORRECTIONS AS NOTED NOT APPROVED-CORRECT&RESUBMIT 4665 West Branch Rd. These comments are for your information. All work shall be dor. rR.ONO COPY Orono, Henn. Co., MN In full compliance with all applicable septic and zoning code. Requirements including items not specifically noted in this review, KEEP THIS PLAN SET ON SITE AT ALL TIMES This site has an existing on-site sewage treatment system which has been classified as non-compliant by the City of Orono & must be replaced by 12-31-2010. This on-site sewage treatment system is designed for a Type 1, three bedroom home, in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. The soils on this site are a clay loam. The periodically saturated soils were located at 24" & 28" (redox features). Due to the seasonally saturated soils, a Pressurized Mound System will need to be installed to treat septic effluent. The bottom of the rock must be located at least 3' above the saturated soils. The soils at a depth of 12" have a percolation rate of 12.0 mpi. ORONO COPY The existing tanks may be used if water tight. If not water tight, the tanks will need to be abandoned, pumped & filled with soil & 2 new 1000 gallon tanks & a 1000 gallon pumping chamber will need to be installed. An effluent screen with an alarm must be installed at the outlet of the 2nd tank. This will most likely require a new tank in order to service the screen. A pumping chamber will need to be installed to lift the effluent to the treatment area. The power supply and switches must be located outside the manhole and pumping chamber in a weather proof enclosure. A warning device must be installed with a light and sound device, this is in case of a pump failure. The manifold and supply line pipe must have back drainage to the pumping chamber. The distribution pipes shall have their ends capped. Be sure the rock and sand fill material are clean. The sod layer below the entire mounded area must be turned over, just break up the sod, be sure not to over work. 1 THIS SYSTEM IS DESIGNED FOR ORONO COPY __,_BEDROOMS. ANY INCREASE IN NUMBER OF BEDROOMS INYAUDATES THIS DESIGN.