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2335 West Highway 36 • St. I'aul, MN 55113 � <br /> Bonestroo �� <br /> - � Rosene Office: 651-G3G-4G00 � Fax: G51-G3G-1311 <br /> 1�� Anderlil< & www.bonestroo.com <br /> Associates <br /> Engineers&Architects <br /> September 13,2005 <br /> Mike Gaffron <br /> Planning Director <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay,MN 55323 <br /> Re: Glendale Cove(177 Glendale Drive/190 Willow Diive North) <br /> File No. 000139-05000-0 <br /> Plat No. OS-3131 <br /> Dear Mike: <br /> We have reviewed the revised preluninary plat and revised preliminary grading and drainage plans dated 9-8- <br /> OS for the proposed 10-lot residential subdivision.It appears that the subdivision will now consist of an outlot, <br /> 8 new homes, one existing home and a lot created for die existing church.The site is located in the southeast <br /> quadrant of the intersection of Glendale Drive and V4Tillow Drive North. We have the following comments in <br /> regards to engineering matters. <br /> 1. Access/Streets: A geotechnical report, R-value reconimendation and pavement design should be <br /> submitted for review and approval. Final plans sllould include all applicable standard details for street <br /> construction. All driveway grades shall be 10%or less. <br /> 2. Grading and Erosion Control: Final plans should include a Stom1 Water Pollution Prevention Plan in <br /> accordance with Minnesota Pollution Control Association rules. The grading plan should be consistent and <br /> show s��ales centered on common lot lines between homes as shown betu�een 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. This will require raising flle <br /> proposed walkout elevations to at least 996.1 for Lots 8, 9, and 10. The street elevations proposed along <br /> the church side across from Lots 8 and 9 will dam water on the church properiy. The plans should be <br /> revised to include storm sewer or the street grades should be revised. Tl�e plans should also include <br /> wetland mitigation infonnation for the proposed wetland unpacts. <br /> 3. Sanitar3� Sewer/VVater Main: Final plans should include a detailed sanitary sewer design. Pian and � <br /> profile views should be provided for all proposed sanitary sewer improvements. The ability to obtaui <br /> municipal water from Long Lake should be explored. If municipal water is availaUle fmal plans sllould <br /> include a detailed water main design iucluding plan and profile vie«�s over all unproveinents. <br /> 4. Storm Sewer/Drainage: Draiiiage area maps aud draulage calculations should be subnzitted for review <br /> and approval. Plans should be submitted to Muznehaha Creek Watershed District for review and approval. <br /> Final plans should include siornl sewer calculations and detailed storm sewer design including plan and <br /> profile views of all proposed stomi sewer improveir►ents. The fmal stonn water pond design shall meet <br /> NURP standards. <br /> 5. Plat: The 1`mai plat should provide drainage and utilily easements 10-feet wide along all exterior lot <br /> lules and 5-feet wide along all interior lot lines.Drainage easements should be provided over all pond'uig <br /> areas,wetlands and drainage ways. <br /> 6.Financial Guarantee: When the final plans are completed we will prepare a cost estunate for the site <br /> St. Paut, St. Cloud, Rochester, MN � Milwaukee, WI • Chicago, IL <br /> Afflrmative Ac[ion/Equal Opporcunity Employer and Employee Owned <br />