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Page -li­ <br />the <br />at or <br />L months <br />system <br />eparation. <br />^les. <br />surface <br />ny soil <br />blue color <br />able in <br />ween 1 and <br />allation <br />ng occurs <br />ny. <br />ave a <br />ling in- <br />ed separ- <br />e cannot <br />tem is not <br />the <br />len a <br />y offers <br />1 water- <br />tallation <br />\ is <br />upled with <br />^e surface, <br />' than the <br />ly have a <br />'eolation <br />. For <br />:ively than <br />ly have a <br />It ion rates <br />snded that <br />systems <br />represent <br />it ■ ^ <br />a <br />*i.;: M <br />: <br />M <br />•I <br />At times it is suggested that the watertable in areas of proposed w^te <br />treatment systems be lowered through use of agricultural drainage tile <br />to provide the proper separation distance between seepage trenches and a <br />watertable. <br />Use of agricultural drainage tile for this purpose is relatively difficult <br />for several reasons: i) the tile installed must be properly plac^ to in­ <br />sure t^t the watertable is sufficiently lowered not to interfer with the <br />system; ii) the tile lines must be properly maintained by some party, this <br />includes the policing of the tile lines to insure that they are TOt dis­ <br />turbed in any manner by the hcmieowners or utility companies; iii)^ the <br />presence of these tile lines offer a convenient outlet for anyone in the <br />future who has problems with their waste treatment system. An additional <br />word of caution on using this type of arrangement, is that little research <br />has been conducted on the functioning of these systems and there is some <br />question as to how well they will operate. <br />The area indicated as Borrow pit presents another problem for the location <br />of an on-site waste treatment system. These systems are designed on the <br />basis of natural soil characteristics. This means that these systems <br />should not be constructed on filled areas. There are primarily two reasons <br />for this. First, it is difficult to determine the pemeability of the <br />filled area, which makes sizing the system very difficult. Second, if the fill <br />settles, the distribution lines of the system will no longer be on grade <br />which will result in unequal distribution of the effluent, localized over­ <br />loading of the system and eventual failure of the system through lack of <br />sufficient treatment and surfacing of the effluent. <br />Fbr areas that have been graded it may be possible to have a soil absorp­ <br />tion system installed if the minimum reconmended distance can be main­ <br />tained between the seepage tren<^es and the watertable; and if the perm­ <br />eability (percolation rate) is rapid enough. The chance of failure for <br />the system is greatly increased however, since the more premeable portions <br />of the soil have usually been removed by the grading; the separation dis­ <br />tance has beOT recced and the likelihood of soil compaction during grading <br />is high. <br />Based upon the above ;»nsiderations it appears that there should be some <br />rearrangem^t and recombination of the proposed lots. There are several <br />lots present as platted that consist entirely of Glencoe, Hamel or Peaty <br />muck soils which are not suitable for installation of any soil absorption <br />system. In addition, there are large areas of steep sloped Erin and <br />(4yden soils where installation of a system is not recommended. <br />V. PUBLIC WATERS CLASSIFICATION <br />There are four wetland areas indicated by the soils map. One of these <br />areas is presently being utilized as a horse pasture and training ring. <br />At the present time this area is not a viable wetland area. <br />'t •, ■ <br />The sei <br />classl <br />The ot <br />would 1 <br />Probab <br />by the <br />land i] <br />wetlan <br />For fir <br />of the <br />VI. RUNOFF <br />With t] <br />aesthe <br />will o< <br />I. ;y#>-1