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LRRWMO Meeting Minutes October 17, 1990 Page 5 NEW BUSINESS Coon Rapids Shopping Center Detention Ponds Tom Hovey, Metropolitan Area Hydrologist, Department of Natural Resources (DNR), was present to discuss already approved permit application #90 -6112, a request by the City of Coon Rapids to construct two sediment ponds in wetland 2 711W and one sediment pond in wetland 2 -629W, all relative to the construction of a shopping mall located in an area adjacent to the Highway 10 and Round Lake Boulevard intersection. Mr. Hovey explained the mix -up whereby the LRRWMO was not provided the opportunity to review this project application. He indicated when the application came in to the DNR, it was sent out to the various agencies and cities. Their DNR map of watershed districts indicated Coon Rapids lies within two watersheds. The LRRWMO was not indicated. The DNR personnel first sent the permit review to Coon Creek, who sent it back indicating the project was not in their jurisdiction. It was next sent to the Six Cities Watershed District who made no indication another error had been made. Skallman indicated he would send the DNR a map of the LRRWMO boundary. Mr. Hovey explained upon review of the shopping center parking lot and street, it was determined the project eleva- tions were above DNR jurisdiction on the wetland, so they did not even have to have a permit from them. However, it was noted there was other runoff from County Road 9 into the wetland just to the west. The DNR met with those involved with the mall and determined a permit would be preferable, if not jurisdictionally required, because of runoff concerns. Through their discussion, it was determined there should be some kind of ponding. The DNR then indicated their approval of having sane of these ponds in wetlands and some out of the wetlands. Mr. Hovey noted it would have been permissible to put these ponds in the wetlands because there are no structures in the wetlands, just along the edge. Schrantz noted this runoff will drain into the City of Anoka and could have significant impact on area homes if a ponding area was created. He felt it could also have a significant effect for Andover. Schultz noted an Anoka project indicated a highwater eleva- tion of 863.5 feet, as set by the DNR. The City of Anoka elevation on nearby property is at 868 feet, and the DNR required an outlet elevation of 863.5 feet.