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��, ' S�P TEST/NG� ��C. Steven B. Schirmers • MPCA Cert.No. 627 951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566 FAX (612)-497-5011 State License#:i94 August 11, 1999 '�u�s,�p y-�S�� S Craig 8� Lii Williams 4340 6th Avenue Orono, Henn. Co., MN This site has an existing on-site sewage treatment system which is Gassified as failed due to not meeting the required 2' separation from the bottom of the system and the saturated soil. The system is also surFace discharging which is classified as an imminent health hazard and must be repaired or disoonnected within 10 months. 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. Approval will be needed to be A 0' away from the west property line with the � system. The well on this site will need approval to be 50' away from the system &the well to the west will need approval to be 70' away from the system. City code is 75'. The soils on this site are SCS soils mapped - EnB - Erin loam. The seasonally saturated soils were located at 18" to 28" (mottled soil). Due ta the seasonal{y saturated soils, a Pressurized Mound System will need to be installed to tr�eat septic effluen#. The bottom of the treatment area must be located at least 3' above the saturated soils. The soils at a depth of 12" have a perc:olation rate of 13.2 mpi. The existing tanks are small aocording to the pumper, 550 & 750 gallons. The tanks are below the concrete patio and will need to be abandoned, pumped and filied with soil. A Class 1 Multi-Flo, Aerobic Wastewater Treatment System which is classified as standard under Minnesota Chapter 7080 rules will be added to the system. The highly treated, filtered effluent produced by the Multi-Flo is over 95% free of the normal sewage 1