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SITE EVALUATION REPORT <br />FOR WILLOW PROPERTIES <br />( GARY PETERSON ) <br />ORONC* MINNESOTA <br />5-30-63 <br />On May 4-30f 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 />ten Treatment Standards (WFC>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 lots but water tables were found <br />to be very high and the 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 />drainfields while the lower areas anC. swales had extremely <br />poor soils for drainf ields. Thus, we ":ended 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 drainfleld areas. <br />Then n w testing would bo required and it would be advise- <br />sble to keep us high up on the kndbs as was previously tes­ <br />ted. <br />Each site tested would be acceptable for either a stan­ <br />dard or shallox^ 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 reedy for construction. If any additional informa­ <br />tion is needed, please contact me.Sincerely, <br />PERCOR, INC. <br />'Mark S. Gronberg, ^E.