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Telephone 473-7357 <br />CITY of ORONO <br />Post Office Box 66 •Crystal Bay, Minnesota 55323•Municipal Offices <br />On the North Shore of Lake Minnetonka <br />July 28, 1978 <br />Mr. Dean Molin <br />248 Cygnet Place <br />Long Lake, Mn. 55356 <br />Dear Mr. Molin: <br />The proposal for a bed-type addition to your drainfield has <br />been disapproved by the City Engineer. While we feel that <br />addition of a 450 square foot seepage bed would improve the <br />current situation, it may not be a long-term solution. Also, <br />a number of site limitations including slowly permeable clay <br />soils and proximity to the creek would preclude city approval <br />of the proposal without further information. It may be neces­ <br />sary in fact to remove the entire existing drainfield, or to <br />remove trees, or install a mound system. <br />Further information to be submitted should include 2 soil borings <br />and 4 percolation tests in the drainfield area to document soil <br />permeability and depth of water table. Your engineer or soil <br />tester should design a system based on the data obtained. <br />Design plans, documentation of the soils, and a more accurate <br />scale drawing of the lot, home, topographical features, and <br />elevations, should be submitted. <br />The City is committed to making septic systems work on a long <br />term basis. Please feel free to call me if you have any <br />questions. I will be happy to meet with you if you wish. <br />Sincerely, <br />Michael P. Gaffron <br />Septic System Inspector <br />MPG:cr <br />Enc.