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From our observations a variance is definitely required to grant the additional 69 square feet of hardcover, and permit grading and tree removal within 75 feet of the lakeshore. Our observation of the effect that this construction would have on the lake is mostly positive. It would permit him to lower the elevation of his lawn to such a point that he could eliminate the present bank that is continuously eroding. A gradually sloping lawn could then be constructed from the lake to the walkout floor level. Because the elevation is lowered the runoff to the lake would be more gradual and there would be a better opportunity for absortion of some of the runoff water into the soils. We consider this to be a minimal effect, in any event not likely to have any measurable impact one way or the other. The additional 69 square feet of hardcover is also a marginal thing essentially of unmeasurable consequence. As the area that would be covered is essentially a hard packed dirt at t1,e time and I suspect as much runoff would occur from it presently as from an addition to the house. The pitch of the roof which is now towards the lake would be changed to diverted to both sides of the lot, but again I don't think this would have any measurable effect. The elimination of the large Maple tree would eliminate a tree; however, as was pointed out earlier it is in a diseased condition, and whether the improvement is made or not it would just be a matter of time before this tree would have to be removed. The present lakeshore is eroding, so in order to save a large Elm tree and other small bushes along the lakeshore rock rip -rap should be placed at the earliest possible time. The lot has a lot of accumulated debris apparently disposed of by the previous owner. The proposal would increase the value of the house, it would improve the appearance of the lot particularly from the lake, and should result in a general visual improvement to the neighbors. On this basis we would believe that from an engineering standpoint a proposed construction would not have an adverse effect on the lake, provided that certain conditions are met during the construction. These conditions would be that the owner be required to store any excavated material in such a way that it would not be subject to erosion and washing into the lake, and that the grading be carried out in as short a time as , ssible, and a good groundcover be established quickly so that a new yard would not erode and dirt be washed into the lake. This I think is consistent with the Vinnehaha Creek Watershed regulations prohibiting the discharge of any dirt or mud from a construction site. If you have any questions regarding this I will pleased to discuss them at your convenience. Yours very truly, MCCOM.BS-KNU'rc.ON ASSOCIATES, INC. Willia If. McCombs, P.E. WNM:jI