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Resol. No. 7486 <br /> Vickery Engineering & (Exhibit C <br /> Post QFicc box 8F 36 <br /> LA24-000018 72 <br /> www.vicker9eng com <br /> June 17,2024 Project VEC 24-055 <br /> Mr. Matt Jasper <br /> 4745 North Shore Drive <br /> Orono, MN 55364 <br /> Dear Mr. Jasper: <br /> Re: Global Stability Analysis,4745 North Shore Drive, Orono,MN (Revision 3 Letter) <br /> As you requested, Vickery Engineering&Consulting,LLC (VEC)has prepared the Boulder Retaining <br /> Wall Plans for the referenced project. The Boulder Wall Plans and Boulder Wall Calculations were <br /> submitted under separate cover. As part of the design process, a global stability analysis of the proposed <br /> slope was performed. <br /> Attached to this letter is the results of the global stability analysis. The analysis was performed using <br /> GSlope global stability software. The soil properties for the global stability analysis were assumed,based <br /> on information provided by you. As you can see from the attached global stability analysis,the results of <br /> the analysis indicate an overall global stability factor of safety of 1.378,which is in excess of the industry <br /> standard factor of safety of 1.3. Please note,without the retaining walls,this factor of safety would be <br /> less than 1.3. Therefore,the retaining walls and the stair system are required to stabilize the slope. <br /> Engineering services provided by VEC engineers for this project have been conducted with that level of <br /> care and skill ordinarily exercised by members of profession currently practicing in Minnesota under <br /> similar time restraints and conditions. No warranty, expressed or implied, is made. Thank you for using <br /> the services provided by VEC. If you have any questions regarding this letter,please call Ron Vickery at <br /> 952-465-8272. <br /> I hereby certify that this plan,specification,or <br /> report was prepared under my direct supervision <br /> and that I am a duly Licensed Professional Engineer <br /> under the laws of the State of Minnesota. <br /> Ronald W. Vickery,PE <br /> President/Principal Engineer <br /> Registration Number: 24065 <br /> June 17,2024 <br /> Attachments: Global Stability Analysis <br /> Engineering5olutions for an(,Instable World <br />