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� � ..7-P TESTING INC. Steven B. Schirmers • MPCA Cert.No. 627 <br /> � <br /> 951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566 <br /> FAX (612)-497-5011 <br /> State License #394 <br /> January 15, 2000 <br /> Kacy Rasmussen <br /> 420 So. Brown Rd. <br /> Orono, Henn. Co., MN <br /> This site has an existing on-site sewage treatment system consisting of 1 tank <br /> (cesspool) and a small seepage bed which does not meet the required 3' separation <br /> from the seasonally saturated soil. The system is classified as failed under Minnesota <br /> Chapter 7080 rules. <br /> This on-site sewage treatment system is designed for a Type 1, six bedroom home, in <br /> accordance with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances. The only site available for a new system will need approval to be 20' from a <br /> Type 111 wetland, city code is 75' for the system. <br /> The soils on this site are SCS soils mapped - LrB - Lester loam bordered by - Co- <br /> cordova silty clay loam. The seasonally saturated soils were located at 18" to 34" <br /> (mottled soil). Due to the seasonally saturated soils, a Pressurized Mound System will <br /> need to be installed to treat septic effluent. The bottom of the treatment area must be <br /> located at least 3' above the saturated soils. <br /> In the area of test hole#1, 10" of fill soil was found. A percolation test was completed in <br /> the original soil which indicated the soils are not compacted. The fill soil will need to be <br /> removed in this area (see site plan) with a backhoe to prevent compaction. <br /> The soils at a depth of 12" have a percolation rate of 10.9 mpi. There was <br /> approximately 2" to 8" of frost at the time the testing was completed. <br /> 1 <br />