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Robert Posthumus, Lots 58 6 59, Morse Islam'. Park January 19, 1988 Page 2 of 3 b) For the mound systems, the setbacks are 75' from the lake, 75' from the pond, 20' from any structure, 75' from any well. c) For the well, the required setbacks are 75' from the lake, 5' from the property line, 3' from any portion of the house or overhang, 75' from any portion of the drainfieid system, and 50' from the septic tanks (note that the State of Minnesota Standards allow the we 1 1. to be 50' from the shoreline and 50' from any portion of the septic system or tanks). 4. riving drawn a 1 1 of those constraints onto a copy of your proposed site plan, with your proposed house location and size, in my opinion the required primary and alternative sites cannot be fitted within the property bcundaries. 5. However, it is also my opinion that with a number of variances and careful site planning, perhaps in addition to a reduction in the size of the proposed house, this lot may in fact be suitable as a building site. The revisions that I see being potentially feasible are as follows: a) Place the well at a location 5 -rom the southern side lot line and 50' from the lakeshore (thi requires a conditional use permit and variance approval from the City Council). b) Move the house nearjr to the southeasterly lot line to a point as near as 10' from that lot line (this also requires a variance approval from the City Council). c) Reduce tae footprint area of the structure so that setbacks of 20' from the mound systems can be maintained. The designated primary and alternate drainfield sites then would be on the flat portion of the top of the hill, and near the base of the hill near the lot corner as shown on the attached conceptual diagram. Based on my .1iscussion with Dr. Machmeier, the point from which mound 6ystem setbacks are measured would be defined by the required banal dimensions of the mound systems (i.e. for the primary site on top of the hill for a 21 minute per inch perc rate and slopes of less than 3%, the defined edge of the treatment area is 5' outside of the rock bed, and we would still expect to see a 10' side lot line setback and 20' house setback from that boundary). Also, for the alternate site downhi , which because of a steeper slope and faster perc rate has a defined treatment area underneath and downhi 1 1 from the rock bed, we would again expect that the 10' property line setback be maintained along with the 20' house setback. These are also shown on the attached diagram. This configuration would appear to meet the required setbacks from property lines and from the lakeshore and the pond. In this configuration we would allow addition of fill materials outside the designated treatment area up to the lot lines (but not outside them).