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SITS EVALUATION REPORT <br />FOR FRED A. P013SON <br />SEPT. 25, 1978 <br />Mr. Fred A. Poisson <br />Z IC. IS • � <br />4010 Bayside Road�t4� <br />Maple Plain, K1, 55359 <br />Dear Mr. Toisson: VI) AS <br />7rr " ICES EAI E <br />As you requested, one soil boring and two pereolatien tests <br />were eondueted in the area of your designated drainfield on 0,,,) � <br />September 21-22 1978. An extra Fob N <br />p , poroolatt�n hole was dug <br />since the soil around percolation bole 2 appeared more <br />clayey, and it was necessary to determine if this was an <br />isolated pocket or indicative of all the soil in that area. <br />Percolation holes 2 and 3 were taken toward the east <br />side of your property where the wools and trees were re- <br />moved. flowerer, when they were later located fusel the <br />section line, they plotted up ,fust outside your property. <br />While this isn't oritical sonoerning the percolation results, <br />care should be taken when constructing the system to be <br />sure it remains the required distance from the lot line. <br />It also might be nsoessuy to extend the lines into the <br />wooded area near your haus• in order to obtain the required <br />i <br />drainfield area. <br />The average percolation rate for the area was 28.8 <br />minutes per inch and the slope of the ground is around <br />12% with the depth to the water table being 7.6 feet at <br />the lower end of the proposed drainfield area. Thus, all <br />the requirements for a standard system are not. Installation <br />of such a system should adhere to the provisions of the <br />Orono on-site sewage treatment manual, trenches should <br />be placed as far as possible up the field and should not <br />extend vary much down the hill from percolation holes <br />since the water table would become closer to the ground <br />surface. <br />Sipo rel , <br />;►� <br />Mark S. Oronberg P. E. <br />