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SITE EVALUATION REPORT <br />FOR WILLOW PROPERTIES <br />( GARY PETERSON ) <br />OROKC, MINNESOTA <br />5-30-63 <br />On May U-30, I983 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 (WPC-^O) 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 />cf 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 ar.d the information we <br />found in the field, the higher areas had very good soils for <br />drainfields while the lower areas and swales had extremely <br />poor soils for drainfields. Thus, we tended to stick to the <br />higher areas while still leaving room for ample building <br />sites. Hov.'ever, once houses are proposed to be constructed <br />it might be desired to shift some of the drainfield areas. <br />Then r x-: testing would be required and it would be advise- <br />sble to keep ts high up on the knobs ns was previously tes­ <br />ted. <br />E-ch site, testeci v.-ould be ..ccep table for either a stan­ <br />dard or sli.Hllow trench drai.nfield system and is noted on the <br />attached drawing. It also night be necessary to use inter­ <br />ceptor drains to divert runoff xcater 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 informa­ <br />tion is needed, please contact me. <br />Sincerely, <br />PERCOR, INC. <br />^Mark S. Gronberg, *^E. <br />*