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^�-7 l ���j <br /> ` V. <br /> � . <br /> , ' _ . � AJ � !A. �� J6. �L 1 � V' ���• <br /> � 951 KATYDID LANE <br /> � ST. MICHAEL, MN 55376 <br /> 497-3566 <br /> Steven �. SChirmers <br /> ( �,'�} C r _-! S�_� �� � ��r'� � �1 September 28 , 1989 <br /> +�/ <br /> Al1an Carlson <br /> Lot 4 , Block 1 i-- ��u,� <br /> Crystal Creek �- �S� <br /> Orono, Henn. Co. , MN <br /> � V <br /> This system is Designed for a Type 1, four bedroom home and in accordance <br /> with the Minnesota Pollution Control Agency Chapter 7080 and local <br /> ordinances . <br /> The soils on this site ar'e typical of SCS soils mapped - LrB - Lester <br /> loam & L+B - LeSueur loam. A seasonally high water table was located <br /> at 18" , 20" , 32" , 34" & 66" , (mottled soil ) . Due to the seasonally <br /> high water table, a pressurized mound system will need to be installed. <br /> The bottom of the rock bed must be located at least 3 ' above the <br /> seasonally high water table . <br /> The soils at a depth of 12" & 18" have a percolation rate averaging <br /> 8 . 5 min/inch and are adequate for treating septic effluent. <br /> A pumping chamber will need to be installed to lift the effluent to the <br /> treatment area. <br /> The manifold and supply line pipe must have back drainage to the pumping <br /> chamber . The distribution pipes shall have their ends capped. Be sure <br /> the rock and sand fill material are clean. The sod layer below the <br /> entire mounded area must be turned over, just break up the sod, be sure <br /> not to over work. <br /> The power supply and switches must be located outside the manhole and <br /> pumping chamber in a weather proo£ enclosure. A warning device must be <br /> installed with a light and sound device , this is in case of a pump failure . <br /> (Mercury floats are a good method) . <br /> Al1 neighboring wells are . located more than 100 ' away from the proposed <br /> treatment area . <br /> Keep all heavy equipment off of the proposed treatment area before and <br /> after construction a� much as possible . The treatment area should be <br /> marked off before construction. . <br /> . � � �-�� <br /> � 1 � : uv <br /> CONT ' D <br /> Soil ared Percolation :''eats <br /> Septic System Design <br />