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~ Bonestroo <br />-=:Ill Rosene <br />~ Anderlik& <br />1 \J 1 Associates <br />Engineers & Architects <br />October 10, 2006 <br />Ms . Melanie Curtis <br />Planner <br />City of Orono <br />Post Office Box 66 <br />Crystal Bay, MN 55323 <br />Re: 560 Big Island <br />2335 West Highway 36 •St.Paul, MN 55113 <br />Office : 651-636-4600 • Fax : 651 -636-1 311 <br />www.bonestroo.com <br />File No. 000139-06000-1 <br />Plat No. 06-3229 <br />Dear Melanie : <br />We have reviewed the revised survey for the proposed home at 560 Big Island received 10-3-06 . We have the <br />following comments with regards to engineering matters: <br />• The architectural drawings show a proposed retaining wall adjacent to the east side of the house, and <br />proposed concrete patios along the east and west side of the house . However, the survey does now show <br />a retaining wall or concrete patios . The plans should be revised such that they are in agreement. <br />• Engineered design and details should be provided for all retaining walls greater than 4' in height. <br />• The proposed swale on the north side of the house should have at least a 2% slope. The proposed spot <br />elevations indicate a slope of approximately O. 7%. <br />• Final plans should include erosion and sediment control details. <br />If y ou have any questions , please call me at (651) 604-4894 . <br />Yours very truly, <br />BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC . <br />Darren Amundsen <br />Cc: Tom Kellogg <br />Bonestroo recently merged with DSU, bringing together some of the best I <br />and urban design. Our combined team now provides integrated services in <br />_ uoftecture , planning, landscape architecture, <br />•St.Paul, St. Cloud , Rochester , .,1\J • Milwaukee, WI• Chicago, IL <br />Affirmative Action/Equal Opportunity Employer and Employee Owned