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Rpp 28 2004 7t83 <br />Bonestroo <br />iAndM’lik& <br />jAssodaccs <br />Kngktmtft 4 ArctWlvctt <br />BONESTROO ROSENE RNOERLIK 6516361311 <br />2335 04tt Htgnwa/ 34 • St. P»J. MN 55113 <br />Ornce: 651*436*4600 • fMC 65h636*l3ll <br />ww^ bootttroe co«n <br />P» 1 <br />Mr April 28, 2004 <br />Mike Gal&on <br />Planning Director <br />City of Orono <br />Post Office Box 66 <br />CrysUl Bay. MN 55323 <br />Re; Stonebay Marketplace <br />File No. 139-04-000 <br />Plat No. 04-2974 <br />Dear Mike <br />We have reviewed the preliminary grading, drainage and erosion control plans for the Stonebay <br />Marketplace site. The site is located in the northwest quadrant of the intersection of T.H. 12 and <br />Willow Drive. We have the following conunents with regards to engineering matters: <br />• A geotechnical report. R-value recommendation and pavement design should be submitted <br />for review and approval. <br />• Parking lot grades should be revised to no: exceed 4%. <br />• The utility plan identifies utibty crossings in three locations. Final plans should provide the <br />same information for the other 4 utility crossings. <br />• Plans should include insulation between the utilities where the separation is leas than 3-feeL <br />• Storm sewer calculations should be submitted for review and approval. <br />• We strongly recommend that an additional wye be installed north of the exist Ing sanitary MH <br />1 to provide a separate service counection for the proposed middle building. <br />• Final plans should include construction details. <br />The following changes pertain to erosion contiol notes (sheet C3.1) <br />• Add under note 14, “or as directed by city inspoclor.” <br />• Add under note IS, *‘comply with gU local ordinances." <br />• Add note 19. All NPDES phase D construction permit regulations will be followed, and a <br />completed SWPPP will be provided to the city and the Minnehaha Creek Watershed <br />District upon submittal to the MFCA. <br />• Add note 20, rock construction entrances will be maintained as appropriately requested <br />by city inspector. <br />■ Add vegetation protection to existing vegetation that Is to remain untouched, and Indicate <br />on plan set <br />• Add note 21, stockpile locations will be on non conveyance areas and enclosed with silt <br />fence until removed. Also, any open soil stockpiles will have temporary cover, if <br />inactive fQr^H>IE^%PJc4iy%ocneitcr. wtllmar. WM • Miivwaukee. Wl • pUcago. IL_________