2002-P04904 - new septic system - Laserfiche WebLink

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S�P TESTING� �NC. Steven B. Schirmers • MPCA Cert.No. 627 951 Katydid Lane NE • St. Michael, MN 55376 • (763) 497-3566 FAX (763)-497-5011 State License #394 February 11, 2002 �►�r�� �EtT�C �r�' 't'8 a_',...;-.�.�.,..��rM.�rr��rir James & Kathy Blazier ��, 795 Ferndale Rd. No. � ��rt�sMM! Orono, Henn. Co., MN '�'w"""""""'�e�".�'�'�M'""�"u�t�rrl' Y tW�w,rW M1+�tMar�bw�M+M swM�� ��Il�t��ii•'1�l�M�nM► This site has an existing on-site sewage treatment system which is hydraulically overloaded and backing into the home. The system is classified as failed and is an imminent health hazard which must be repaired or disconnected within 10 months. The existing tanks are block type, non water tight which must be abandoned, pumped and filled with soil. This on-site sewage treatment system is designed for a Type 1, four 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 seasonally saturated soils were located at 24" (mottled soil). 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. Due to limited space available, the absorption area of the mound will need to be 20' from the north property line and the toe of the mound 11' from the north property line. The south end of the toe of the mound is 8' from the asphalt driveway. This will need approval from the City. The soils at a depth of 12" have a percolation rate of 26.7 mpi. 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. 1