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2335 West Highway 36 • St.f'aul, MN 55113 _ � <br /> . Bonestroo <br /> Rosene OfFice: 651-G36-4G00 • Fax: 651-G3G-1311 <br /> Anderlil<& www.bonestroo.com <br /> - Associ�tes <br /> Engineers&Architects �++��� <br /> July 12, 2005 �/�� �, ���.�j�, <br /> Mike Gaffron � .g� <br /> Planning Director �T�� ?00,� <br /> City of Orono ��p� <br /> Post Offce Box 66 0/1/� <br /> Crystal Bay, MN 55323 <br /> Re: Glendale Cove(177 Glendale Drive/190 Willow Drive North) <br /> File No. 000139-05000-0 <br /> Plat No. OS-3131 <br /> Dear Mike: <br /> We have reviewed the preliminaty plat and preliminaiy grading and drainage plaus dated 6-22-OS for the <br /> proposed 11-lot residential subdivision. It appears that the subdivision will consist of 9 new homes, one <br /> existing home and a lot created for the existing church. The site is located in the southeast quadrant of the <br /> intersection of Glendale Drive and Willow Drive North. We have the following cornments in regards to <br /> engineering matters. <br /> 1.Access/Streets: A geoteclmical report,R-value recomrnendation and paveinent design should be <br /> subinitted for review and approval. Fuial plans should include all applicable standard details for street <br /> construction. All driveway grades shall be 10%or less. <br /> 2. Grading and�rosion Control: Final plans should include a Stonn Water Pollution Prevention Plan in <br /> accordance with Minnesota Pollution Control Association rules. The grading plan should be consistent and <br /> show swales centered on coirunon lot lines between homes as shown between Lots 4 and 5. The grading <br /> plans should provide 2-feet of freeboard between the high water levels of any pond or wetland and the <br /> lowest exposed opening to any home adjacent to the pond or wetland. It appears some additional grading <br /> may be necessary on the north side of Lot 2 to convey storni water flows around the proposed home site. <br /> 3. Sanitary Sewer/Water Main: I'inal plans should include a detailed sanitaty sewer design. Plan and <br /> profile views should be provided for all proposed sanitaty sewer improvements. The ability to obtain <br /> municipal_water from Loiig Lake should be explored. If municipal water is available final plans should <br /> include a detailed water main design including plan and prolile views over all improvements. , <br /> 4.Storm Sewer/Drainage: Drainage area rnaps and drainage calculations should be suUmitted for review <br /> and approval. Plans should be submitted to Minnel�aha Creek Watershed District for review and approval. <br /> Pinal plans should include storm sewer calculations and detailed stonn sewer design including plan aud <br /> profile views of all proposed stonn sewer improvements. The fnal storm water pond design shall meet <br /> NURI' siandards. <br /> 5. Plat: The final plat should provide drainage and utilily easemenCs 10-feet wide along all exterior lot <br /> lines and 5-feet wide along all iiiterior lot lines. Drainage easements should be provided over all ponding <br /> arels, wetlands and draivage w1ys. <br /> 6. rinancial Guarantee: When the rinal plai�s are completed we will pi-epare a cost estiu�ate for the site <br /> improvements. A financial guarantee of 150% of this estimate should be provided to the city in flie form of <br /> a leCter of credit prior to any work on site. <br /> St. Paul, St. Cloud, Rochester, MN • Milwaul<ee, WI • Chicago, IL <br /> Affirmative Action/Equal Opportunity Employer and Employee Owned <br />