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11/08/2004 11:43 FAX 7634419176 -Miller Environmental Inc. November 8, 2004 Palm Properties Mike Palm 2311 Wayzata Boulevard Minneapolis, Minnesota 55405 WATER LABS & ECO SYSTEMS Subject: Site Investigation for Onsite Wastewater System (OWS) 560 Big Island; City of Orono 141002 PMONE; 763-370-5961 FAx:763-441-9176 333 East Main Street• Elk River, MN 55330 MEI completed 4 soil borings on November 5, 2004 at the approximate locations indicated on the attached figures. The soil profile descriptions are attached to this correspondence. The purpose of the soil investigation was to generally detennine the type of Onsite Wastewater System (OWS) that can be anticipated to serve the new residential home. The results of the soil borings indicate the site is underlain by loailly glacial deposits. Clay loam textures were encountered in the soil borings to approximately 3 feet, underlain by olive brown sandy loam soil rich in calcium carbonate and shale deposits. The soil borings completed within the drain field area we:r.e on slopes from 4% ~ 18% with a dense cover of oak, aspen and maple trees. Slope measurements were taken in three locations; I) along the entire drain fie]d area, 2) along the area of the primary site and 3) along the area of the secondary site. The three measurements had an average slope of just less than 18%. Evidence of a seasonal water table was not observed in soil borings 2-4, the area of the proposed OWS drain fields. The attached figures give the drain field calculations and area requirements as well as identifying the proposed area for the drain fields. It is anticipated that a three bedroom type 2 home will be constructed on the site for an estimated average daily flow of 300 gallons per day. With a subsurface drain field using a.11 equivalence of 12 inches of sewer rock will require two drain field sites of 528 square feet each. Three foot wide drain field trenches are shown along the contour of the landscape on the attached figures to meet the area requirements. At the time of designing the OWS for the residence, percolation tests are required by the City of Orono as well as a complete OWS design with data sheets and material specifications for permitting. If you have questions, please e free to call. P~.s.s. Designer I MPCA Ce1tification #2262 Cc: Matt Bolterman; City of Orono