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} <br />June 14, 1976 <br />City of OronoProject mooe.o <br />Page 2 <br />Site Drainage: (continued) <br />0 acc(wnK)date runoff from the remainincj areas of the parking lot and from the <br />roof of the building, and to avoid overburdening the Kelley Avenue drainage <br />area, we have designed a holding pond. This pond will be able to hold approximately <br />40,000 cubic feet of runoff or another way of stating it - it will hold all <br />runoff from the site up to an accuimulated sum of 7" of rainfall. We anticipate <br />that with this approach the runoff problems relative to Kelley Avenue, will be <br />less severe than they have been in the past. <br />Watershed District: <br />We have met with Mr. John Holmquist of Minnehaha Creek Watershed District and <br />have rewiewed the above proposed drainage plans with him. Mr. Molniquist stated <br />that he didn't anticipate any problems from the Watershed District with our <br />proposed plans, however, a formal acceptance will be required. <br />If you have any further concerns, please contact us. , * <br />Sincerely, <br />R. J. Hillstrom, P.E. <br />Project Manager <br />RJH:dg <br />Attachment: Drawings <br />cc: Frank Zelley - Ryan Construction <br />'liH