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Chairperson Nixt asked if the increase in the retaining wall elevation is a result of the <br />amended grading plan. <br />Mr. Fink replied he does not know the exact square footage or exact dimensions included <br />in either of the plans, but both plans included a significant retaining wall. They <br />considered another plan that included an additional retaining wall along the western <br />boundary, and they tried to avoid that. <br />Chairperson Nixt asked what staff envisions to control the aesthetics of what could be a <br />12 -foot hole adjacent to the street, and whether there are other dry ponds of this depth in <br />the City. <br />City Engineer Jankowski replied there are some other dry ponds of this depth. The one in <br />Business Park 95 is much deeper, but is in an industrial /commercial area. There is one in <br />the Village of Sunfish Lakes that is likely this deep along the south side of Sunwood <br />Drive. <br />Mr. Fink stated the pond that currently exists here is probably deeper than the pond that is <br />being proposed, and it is dry. The numerous plantings between the pathway and <br />Dysprosium Street visually and physically screen the pond area from traffic and <br />pedestrians. <br />Commissioner Trites Rolle inquired if the amended grading plan takes into consideration <br />that if TH 47 comes through, or Dysprosium Street is widened, it will accommodate <br />moving the water off the parking lot and the building area so that there are not problems <br />with the east pond being removed. <br />Mr. Fink replied there is existing stormwater piping in Dysprosium Street that the <br />emergency overflow from the new pond would accommodate. He is not aware of how <br />they would design the stormwater management for the new highway. <br />Commissioner Levine noted this would be taken into consideration with TH 47. <br />Mr. Fink stated this plan allows for a simpler process for accommodating the right -of- <br />way acquisition than any previous plan. There is a lot of vegetation along the eastern <br />curve of Dysprosium Street to shield the pond visually and for a safety aspect. In <br />addition, the safety factor of the existing pond to the west will be somewhat mitigated <br />with the capacity lessened. That existing pond is not the safest, and he has seen <br />children's toys in there. <br />Commissioner Brauer questioned if there are 12 -foot deep ponds in the City without <br />fencing. <br />City Engineer Jankowski indicated a 4 to 1 slope is required and the ponds are normally <br />dry. <br />—311— <br />