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r r ^* •» * W ? t ^ Ci r . sJ 4L <br />PH6NEN0.M STATE OFj^DEPARTMENT OF NATURAL RESOURCES'^ <br />METRO waters “ 12 00 WARNER ROAD, ST. PAUL, MN 55106 <br />772-7910 F.LEN0 <br />February 17, 1994 <br />Hs. Jeanne Mabusth <br />City of Orono <br />P.O. Box 66 <br />Crystal Bay, Minnesota 55323 <br />RE; TANDEM PROPERTIES, COFFIN/DICKEY SITE, CITY OF ORONO, HENNEPIN <br />COUNTY <br />Dear Ms. Mabusth: <br />We are writing to follow up on the February 3, 1994 naating with <br />city staff, reprefientatlves of Tandem Properties and DNR staff. <br />I'd like to summarize our understanding of the agreements that were <br />made and concerns that were noted. <br />Coffin Pro> erty - Most of the discussion focussed on the Coffin <br />Property; <br />Since the existing ditch along the Luce Line and the existing <br />18” culvert through the Luce Line already are inadequate for <br />conveying runoff under existing conditions, the DNR ie <br />concerned about making a bad situation worse. Therefore, it <br />was agreed that Tandem Properties would be responsible for; <br />a. cleantng/upgrading the existing ditch that runs along the <br />Luce Line, <br />b. replacing the existing 18” culvert, which is in <br />disrepair, with a new/upgraded 24” culvert, and <br />c. placing a new culvert under the horse trail in the area <br />by the pond (at the east end of the property). <br />The city has concerns about the potential impacts of the <br />proposed development on the Ryerse property. Some type of <br />emergency overflow is required for handling flood flows in <br />case the lower culvert through the Luce Line is plugged. <br />a. DNR staff agreed to allowing a second, higher culvert <br />through the Luce Line to act as an overflow. <br />b. DNR staff also agreed to consider minimal lowering of the <br />elevation of the Luce Line at this location, provided; <br />the slope in the graded area is no greater than one <br />percent, DNR Trails & Waterways staff has an opportunity <br />to review and approve the detailed plans, and the surface <br />of the trail is restored. As noted during the meeting, <br />any proposed change in grade should be kept to a minimum <br />in order to avoid creating maintenance problems on the <br />trail. <br />AN EQUAL OPPORTUNITY EMPLOYER