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Ik <br />i <br />h <br />t <br />/ <br />To <br />Prom; <br />Da1:e: <br />Subject <br />Chairman Kelley and Plannino Comrr i s'? i on Merihers <br />Mayor Peterson and City Council ^ ^ <br />Ron Moorse, City Administrator <br />Jeanne A. Mabusth, Building ^ ::oninq Administrate^^ ^ <br />February 13, 1992 <br />#1715 City of Orono, 2700 Town Hall Road - <br />Conditional nse Permit/Variance - Public Hearing ^ <br />51 <br />Pertinent Ordinances - <br />1. Section .10.55, Subdivision 8 - Variance. Land alterations <br />are proposed within designated wetlands classified as a Type <br />2. Alterations of Type 2 wetlands do not require approval <br />or pertnits from DNR or Corps of Engineers. <br />2.Section ’C.03, Subdivision 19 - Ccndirional Use Permit. <br />Land alterations involve grading and filling activities in <br />excess of 100 cubic yards. <br />List of Bxliibits - <br />A - Plat Map <br />B - Property Owners List <br />C - Field Notes from Site Inspection (Steve MrComas, <br />Limnologist) <br />D - McComas Report 2/3/92 <br />E - Option 1 - Three Detention Ponds <br />F - Option 2 - One Detention Fond <br />G - Designated Wetland as Shown on Final Flat <br />H - Designated Wetland as Shown op Preliminary Topograjhic <br />Plan <br />Review of Application <br />The City of Orono grading and drainage plans fo’" *'he City <br />facility site arc currently being reviewed hy the Minn .hal i Creek <br />Watershed District. The Watershed District has udvi*^ that <br />detention must be provided on site to maintain eritin^ drainage <br />at property's current undeveloped condition. T' is was already <br />noted during the preliminary subdivision review. Review Exhibits <br />g and H. Drainage leaves the property at the east lot line at <br />1016.6 elevation. The 100 year storm elevation v/as determined to <br />be at the 1018. The overflow outlet to the northeast -S at t.ie <br />1017.'- elevation. Note drainage easement was not taken to the <br />northeast at the time of the platting. A drainage easement shall <br />be taken over overflow drainageway exiting at the i017.9 <br />elevation. The entire 25+ acre watershed has been designated on <br />the drainage plans (Exhibits E and F). Note there still is no <br />change proposed for drainage facility carrying drainage from <br />Orono School complex to the western border of the City property. <br />Drainage still fans out over existing teirain tc low retention <br />areas on property and will remaii as such until biking and hike <br />trails are installed axong the western boundaries of pre^perty.