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November 19, 1992 <br />Bob Voronyak <br />1435 Bay Ridge Rd <br />Wayzata MN 55391 <br />RE: Septic system design and <br />percolation tests for; <br />Minnesota Pollution <br />Control Agency <br />1407 Bay Ridge Rd <br />Wayzata MN 55391 <br />Orono zoning <br />We were retained by Mr. Voronyak to provide criteria for the <br />design and installation of an individual sanitary sewage <br />treatment system to handle the sewage flow generated by w�ter-use <br />appliances within a single family dwelling,. <br />A total of six (6) soil percolation tests were performed on <br />November 6, 1992 at a representative areas to the west of the <br />dwelling. <br />In addition, four (4) soil borings were drilled with a 2" i.d. x <br />3 1/4" m.d. Hand auger to check for the position of the ground <br />water tab1e and to identify the underlying soil types. Location <br />of tests- and borings are shown on the site plan. <br />The percolation tests were performed in accordance with the <br />provisions of "Minnesota Pollution Control Agency Rules and <br />Standards Chapter 7080." The perc.:olation tests holes were <br />drilled to a alternate mound depth of 12 irlches with a 5" i.d x <br />6" ��.d. auger. Two inches of pea gravel were placed in ^ <br />bottom of each hole to prevent scoring. Water was then added to <br />the test holes and replenished as necessary, maintaining a <br />12-inch head of wat�r over the bottom. After a period of <br />saturation, each hole was refilled to a 12-inch head of water <br />ovt�,r the bottom, and the percolation tests commenced. <br />