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� � • � BOI_TON � M � N K , I NC� . Consulting Engineers & Surveyors " 2638 Shadow Lane, Suite 200•Chaska, MN 55318-1172 Phone(952)448-8838•Fax(952)448-8805 www.bolton-menk.com July 29, 2014 City of Orono Attn: Christine Mattson 2750 Kelley Parkway Orono, MN 55356 RE: Building Permit Application 2014-00685 125 Kintyre Lane Engineering Review#1 Dear Christine, As requested, we have completed an engineering review of the documents submitted for the above referenced project. Our current review is based on the following submittal items: • Certificate of Survey prepared by Sathre-Bergquist, dated 6/25/14 • Building Plans prepared by Gonyea Homes, dated 6/30/14 • Grading Plans prepared by Gronberg &Associates, dated 6/23/10 We offer the following observations, comments, and recommendations for your consideration: l. Additional grading detail should be provided on the northwest corner of the house to ensure runoff is not directed into the building. Contours should be revised to provide swales that are a minimum 0.5' below the grade at the house. Additional spot elevations may be necessary to provide sufficient detail. 2. Retaining walls 4' or greater in height are proposed. Any walls 4' or greater in height must be designed by a licensed Professional Engineer, and plans submitted to the City for review and approval. Multiple walls less than double the height of the bottom wall apart shall be considered one wall. 3. Silt fence should be indicated on the plan down gradient from all proposed work. 4. The septic sites should be indicated on the plan, and protection fencing should be installed around the sites to ensure they are adequately protected during construction. 5. The silt fence and septic site protection fencing should be installed and inspected by the City prior to any land disturbing activities. The Contractor must provide a minimum 24 hour notice prior to inspection. 6. A financial security of$2,500 from the Applicant is recommended for erosion control and engineering oversight. The financial security is intended to provide protection in the event that it becomes necessary for the City to install or maintain erosion and sediment control within the project area and covers the cost of vegetation re-establishment if the applicant is unable to follow through with the conditions of approval. 7. The applicant will be required to obtain Minnehaha Creek Watershed District(MCWD) approval and permitting for their Erosion Control Rule. A copy of any approvals or permits required should be submitted prior to any work. DESIGNING FOR A BETTER TOMORROW Bolton&Menk is an equal opportunity employer