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Jann & Renee Olsten <br />May 18, 198' <br />Page 3 <br />these soils. We suggest that all traffic, especially heavy construction traffic, be <br />kept free from the "modified dra;nfield" `-eatment area, both before and after it <br />is construct-d. There is about a 5-10% : . of the present ground surface in this <br />area. Surface water run-off should be di. ced, as much as possible away from the <br />t.-atment area. Th', may be accomplished with a properly designed drainage ditch <br />along the lower Jd,! of the driveway to carry away most of the surface water. <br />With the above setup it may be possible to rest half of the system for perio4, <br />6-9 moat' by shutting off either side of the drop box at the upper line. Th, <br />should pru.note longevity of the system. Restricting the use of a garbage dispj <br />and annua' removal of solids from the septic tanks will also promote longevity. <br />Conditions at the alternate (future) area are similar to those found in the primary <br />area. However, the effluent will have to be pumped to this higher area. <br />GENERAL REMARKS <br />The above comments ... opinions are based on conditions found at our be-ing and test <br />locations. Shou',i :ji 'fe-ent--oitions be found at other locations, or -' th- -on- <br />struction plans c<3nk, ;ignif tly, please call us for additional review. <br />We sincerely appreciate the oppirtunity to serve you. <br />Very truly yours, <br />Gordon R. Eischens <br />MPCA Cert. #00675 <br />GRE/rr <br />Encs. <br />cc: 3-Dahlme'.,�r Construction, Inc. <br />Attn: Bruce Dahl^reier <br />