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S�P TESTING, INC. Steven B. Schirmers — MPCA C?rt. N�. 627 <br /> 951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566 <br /> December 10 , 1993 <br /> Coffin Site <br /> Lot 4 , Block 1 <br /> Orono, Henn. Co. , MN <br /> This On-Site Sewage Treatment System is Designed for a Type l , five <br /> bedroom home in accordance with the Minnesota Pollution Control <br /> Agency Chapter 7080 and local ordinances . <br /> The soils on this site are S^S soils mapped - KkB - K.ilkeilny <br /> loam. P. seasonallv high :�a�er table was located at 26" co 34" , <br /> (mottled soil ) . Due to the seasonally high water ta:�l:�, a <br /> Pressurized Mound system will need to be installed. The bottor� <br /> of the rock bed must be located at least 3 ' above the seasonally <br /> high ��ater ta;�le . <br /> The soils at a depth of 12 " have a percolation rate averaqing <br /> 8 . 7 min/inch . <br /> A pumping chamber will need to be installed to lift tne effluent <br /> to thP tr�atmen` area . <br /> The manifold and suaply line nipe must have back drainage to the pu�ping <br /> chamber . The distrib�ition n�_���s sha'_�. have th�ir ends capped . F�e sure <br /> the rock and sand :^il� :�ateLial ar�� c'ean . The sod layer below th� <br /> entire mounded Fil"�2�"� :�1]S'� ',J2 turned OV2i � ]USt bi?d� U� ttle SOC� � �Je SLlLe <br /> not to over work . <br /> The po�aer supply and switches must be located outside the manhole and <br /> pumping chamber in a weather proof enclosure . A warning device must <br /> be installed with a light and sound device , this is in case of a pump <br /> failure . Mercury floats are a good method . <br /> All neighboring wells are located greater than 100 ' away from the <br /> proposed treatment area . <br /> CONT ' D <br />