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Jesse Struve <br /> From: Jesse Struve <br /> Sent: Monday, August 13, 2012 10:47 AM <br /> To: Melanie Curtis <br /> Cc: Christine Mattson <br /> Subject: 20120813 plan review for 4115 Watertown Rd <br /> Melanie, <br /> The applicant submitted hand drawn plans for a proposed retaining wall as a revision to permit number 2013-00339 and <br /> I have the following comments: <br /> • The proposed changes to the retaining walls need to be shown on an actual survey. Hand drawn copies are not <br /> sufficient. <br /> • The survey should indicate top and bottom of wall elevations and how the elevations will be tied into the <br /> existing grade. <br /> • The details provided show each tier of the wall to be at 4' in height, but only show a separation of 4'. Tiered <br /> walls need to be separated by 2x the height or an 8' minimum separation. The separation will be measured <br /> from the back of the lower wall to the face of the upper wall. <br /> • Also each wall is shown to be 4' in height. I will be performing an on-site inspection of the walls as part of the <br /> final review. If either of the walls exceed 4' in height or if the separation (as defined above) is not separated by <br /> 2x the height(min),then the applicant will be required to provide engineered plans signed by a registered <br /> professional engineer. <br /> Please contact me with any questions or concerns. <br /> Jesse Struve, PE <br /> Director of Public Works/City Engineer <br /> City of Orono <br /> (952)249-4661-Direct <br /> (952)249-4616- Fax <br /> www.ci.orono.mn.us <br /> 1 <br />