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City Engineer Jankowski replied the depth will be approximately 12 feet. <br />Chairperson Nixt pointed out that that this 12 -foot pond will be located adjacent to <br />Dysprosium Street. <br />City Engineer Jankowski indicated there is a requirement for a 4 to 1 slope. The pond <br />would normally be dry. In reviewing the revised plans, staff will have minor comments <br />to make, such as the fact that they would not allow the inlet to occur as shown, which <br />appears to be 6 feet above the bottom of the pond. It would be required that the inlet of <br />the incoming pipe is no more than 18 inches above the bottom of the pond. The Lower <br />Rum River Watershed Management Organization (LRRWMO) will need to verify the <br />size ana capacities of the ponds. <br />Commissioner Brauer questioned why the existing pond is not being used for drainage, <br />rather than this new pond. <br />City Engineer Jankowski replied the pond that is currently there was designed large <br />enough for this facility. The problem is that it pushed the whole development out to the <br />point where it would conflict with the right -of -way of the relocated TH 47 if that is the <br />route chosen. The goal was to push the whole complex back to the property line, which <br />involved filling a point of that western pond and replacing that with ponding adjacent to <br />Dysprosium Street. <br />Chairperson Nixt asked if the elevation of the retaining wall will be affected by this <br />reconfiguration. <br />City Engineer Jankowski indicated staff has not had a chance to review the retaining wall <br />on the south. <br />Mr. Fink stated it has been the instruction to their civil engineer to minimize retaining <br />walls at all cost. They have tried to adjust the elevation of the site and building to <br />minimize that, which he thinks has been accomplished. <br />-310- <br />