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.a <br />SITE EVALUATION REPORT <br />FOR WILLOW PROPERTIES <br />( GARY PETERSON ) <br />OROSC, MINNESOTA <br />5-30-63 <br />On Kay 4-30, 1963 six percolation holes were tested on <br />each of 10 lots and 3 soil borings taken on each lot as well <br />in accordance with the provisions of Individual Sewage Sys­ <br />tem Treatment Standards (WPC-40) adopted in 1976 by the Minn­ <br />esota Pollution Control Agency. In addition, other soil bor­ <br />ings were taken in lower areas to determine the possibility <br />of obtaining more than 10 loti but water tables were found <br />to be very high and ^;£he soils were found to be very slowly <br />permeable. <br />According to the soils maps and the information we <br />found in'the field, the higher areas had very good soils for <br />dralnfields while the lower areas and swales had extremely <br />poor soils for dralnfields. Thus, we tended to stick to the <br />higher areas while still leaving room for ample building <br />sites. However, once houses are proposed to be constructed <br />it mighc be desired to shift some of the drainfield areas. <br />Then n w testing would be required and it would be advise- <br />able to keep i;s high u? o:i the knCbr as was previously tes­ <br />ted.-. <br />Each site testeu w.nuld be ucoeptable for either a stan­ <br />dard or shallow trench drainfield system and is noted on the <br />attached drawing. It also night be necessary to use inter­ <br />ceptor drains to divert runoff water but this would be men-’ <br />tioned in the system design for the Individual houses once <br />they are ready for construction. If any additional infoxTia- <br />tion is needed, please contact me. <br />Sincerely, <br />PERCOR, IKC. <br />'^Mark S. Gronberg, T.E <br />■ -j