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PAUL A. WALDRON, CODES CONSULTANT <br />1222.5 - 62nd Street <br />Wacunia, Minnewta 55387 <br />(n12) 446-1786 <br />M.P.C.A. <br />Certification Number 550 <br />June 16, 1986 <br />Ms. Jean Martineau <br />589 Bryant Street <br />Maple Plain, MN 55359 <br />RE: Soil Percolation Tests Jab #86-35P <br />at- Lot 3, Block 1 <br />Chippewa Addition <br />City of Orono, Minnesota <br />I was retained by Jean Martineau to conduct percolation tests on <br />this property, in order to provide criteria for the design and <br />installation of an individual sanitary sewage treatment system to <br />handle the sewage flow generated by water -use appliances within a <br />single family dwelling. <br />A total of six (6) soil percoldtion tests were performed on June <br />10, 1986, at a representative _area on the property. <br />In addition, ten 8 -foot deep soil borings were drilled with a 2" <br />i.d. x 3 1/4" o.d. continuous boring auger to chP:k: for the <br />position of the ground water table and to identify the underlying <br />soil types. Location of tests and borings are shown on the site <br />plan. <br />The percolation tests were performed in accordance with the <br />provisions of W.P.C.-40 "Individual Sewage System Standards." <br />The percolation tests holes were drilled to a conventional depth <br />of between 12 and 25 inches with a 5" 1.d. x 6" .�.d. auger. Two <br />inches of pea gravel were placed in the bottom of each hole to <br />prevent scoring. Water was then added to the test holes and <br />replenished as necessary, maintaining a 12 -inch head of water <br />over the bottom. After a period of saturation, each hole was <br />refilled to a 6 -inch head of water over the bottom, and the <br />percolation tests commenced. <br />