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'SP. 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 27, 1999 <br /> Garnett Residence <br /> 450 &480 Orono Orchard Rd. <br /> Orono, Henn. Co., MN <br /> This site has an existing on-site sewage treatment system for the guest house <br /> consisting of 2-1000 gallon septic tanks, a 1-1000 gallon lift station and a pressurized <br /> mound system. The main house has 2-1500 gallon septic tanks and a trench system <br /> which is classified as failed due to not meeting the required separation from the bottom <br /> of the system and the saturated soil. <br /> This on-site sewage treatment system is designed for a Type 1, 3 bedroom Guest house <br /> & a 5 bedroom home = 1200 gal/day, in accordance with the Minnesota Pollution Control <br /> Agency Chapter 7080 and local ordinances. <br /> The soils on this site are SCS soils mapped - Kkc- Kilkenny loam. The existing mound <br /> and distribution pipes will be expanded to the south. The existing pipes are either 1-1/2" <br /> or 2" diameter with 1/4" perforations 36" apart. The existing septic tanks may be used if <br /> water tight and upon approval from the local Inspector. The existing 1000 gallon <br /> pumping chamber will be abandoned and a new 2000 gallon pumping chamber will be <br /> installed with the effluent from both tank locations flowing to one pumping chamber. A <br /> bathroom will be installed in the barn (proposed gym) and will flow to the tanks for the <br /> guest house. <br /> The soils at a depth of 12" have a percolation rate of 13.8 mpi. <br /> All neighboring wells are located greater than 100' away from the proposed treatment <br /> area. <br /> 1 <br />