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• � t��-� �. 1` . , '•J ` � '���--ICJ <br /> �. • ' <br /> , , ' � � �Y�� <br /> ��` S-P TES �"IN�, INC. ��c�°�U� � . <br /> � 951 KATYDID LANE <br /> �, ST. MICHAEL, MN 55376 <br /> 497-3566 - <br /> . _ ,� <br /> � . � Steven B. Schirmers , i 4 �� ' <br /> . <br /> September 24, 1990 � <br /> John Gardner <br /> 1486 Long Lake Blvd. <br /> Orono, Henn. Co. , MN <br /> This letter is in reyuard to the existing On-Site Sewage Treatment <br /> System on this property which at this time has effluent surfacing. <br /> � . <br /> The present system is located north of t�e house along the west property <br /> line. The system is located in a loam soil which is mottled (seasonally <br /> high water table) at approx. 18" below the surface. This site has <br /> very limited space to replace or expand the present system. <br /> Soil Borings to the south of the house & west of the driveway indicate <br /> fill soils 18" deep with mottled soil at 30" deep. North of the garage <br /> mottled soil is at 30" to 40" deep and would need a Pressurized Mound, <br /> area available is 40 ' x50 ' & the well would need to be moved. If this <br /> area was to be used, it is approx. 2/3 of the area needed. The water <br /> use in the house would need to be reduced. <br /> In a meeting with Mike Gaffren from the City of Orono, we discussed <br /> the possibility of adding trenches to the north end of the present <br /> bed system. We feel this may be a possibility due to the other <br /> options not meeting State Code also. <br /> The area to the north of theexisting systern has some fill present. <br /> Recommend if the additional trenches are added to keep the trenches <br /> at least 12" into the original soil . Soil Borings will need to be <br /> completed to determine the depth of the fill soil . <br /> <�>� �� �� � <br /> Steven B. Schirmers ps <br /> SBS/ds <br /> Soi! and Percolation Teata <br /> Septic System Deaign <br />