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April 14, 1994 <br /> Charles Cudd Homes <br /> Mr. Max Norton <br /> 1802 Woodlle Drive <br /> Woodbury MN 55185 <br /> RE: 'Septic system design and <br /> percolation test for; 1225 Orono Oaks Drive <br /> Orono MN <br /> Hennepin County <br /> We were retained by Mr. Norton of Charles Cudd Homes to provide criteria for the design and <br /> installation of an individual sanitary sewage treatment system to handle the sewage flow <br /> generated by water-use appliances within a single family dwelling with 5 bedrooms. <br /> PROcEDVRE <br /> A total of six (6) soil percolation tests were performed on April 13, 1994 in areas to the east and <br /> west of the proposed house. <br /> In addition , six (6) soil boring's were drilled with a 2" i.d.x 3 1/4" o.d. Hand auger to check for <br /> the position,of the ground water table and to identify the underlying soil types. Location of tests <br /> and boring's are shown on the site plan. <br /> The percolation tests were performed in accordance with the provisions of"Minnesota Pollution <br /> Control Agency Rules and Standards Chapter 7080". The percolation test holes were drilled to a <br /> alternate mound depth of 12 inches with a 5" i.d. x 6" o.d. auger. Two inches of pea gravel were <br /> placed in the bottom of each hole to prevent scoring. Water was then added to the test holes and <br /> replenished as necessary, maintaining saturation for four hours. Then each hole was refilled to a <br /> 9 -inch head of water over the bottom, and the percolation tests commenced. <br />