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Robert Posthumus, Lots 58 & 59, Morse Island 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 wel.l. c) For the well, the required setbacks are 75' from the lake, 5' f rom the property line, 3' f rom any portion of the house or overhang, 75' from any portion of the drainfield system, and 50' from the septic tanks (note that the State of Minnesota Standards a x 1 ow the we 1. I to be 5 0' f rom the shore 1 ine and 5 0' f rom any portion of the septic system or tanks). 4. Having drawn a7. 1 of those constraints onto a copy of your proposed site plan, with your proposed house I.ocation and size, in my opinion the required primary and alternative sites cannot be fitted within the property boundaries. 5. However, it is also my opinion that with a number of variances and careful site pZanning, perhaps in addition to a reduction in the size of the proposed house, this I.ot may in fact be suitable as a building site. The revisions that I see being potentia� ].y feasibYe are as foxlows : a) P7,ace the we7.1 at a location 5' from the southern side lot line and 50' from the lakeshore (this requires a conditional. use permit and variance approval from the City Council). b) Move the house nearer to the southeasterly �,ot line to a point as near as 10' from that l.ot Iine (this axso requires a variance approva�, from the City Council) . c) Reduce the footprint area of the structure so that setbacks of 20 ' from the mound systems can be maintained. The designated primary and alternate drainfieZd sites then would be on the flat portion of the top of the hil7, , and near the base of the hiXl near the lot corner as shown on the attached conceptual diagram. Based on my discussion with Dr. Machmeier, the point from which mound system setbacks are measured would be defined by the required basa7, dimensions of the mound systems (i.e. for the primary site on top of the hil.l for a 21 minute per inch perc rate and sl.opes of less than 3�, the defined edge of the treatment area is 5' outside of the rock bed, and we would sti], 1 expect to see a 10' side 2ot line setback and 20' house setback from that boundary) . Also, for the alternate site downhilx, which because of a steeper slope and faster perc rate has a def ined treatment area underneath and downhi]. 1 f rom the rock bed, we woul,d again expect that the 10' property line setback be maintained a].ong with the 20' house setback. These are axso shown on the attached diagram. This configuration would appear to meet the required setbacks from property lines and from the �.akeshore and the pond. In this configuration we would al.low addition of fill materials outside the designated treatment area up to the Iot xines (but not outside them).