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A S <br />ASSCt+~ 1ATE <br />October 24, 2011 <br />Mr. Troy Adams <br />Elk River Municipal Utilities <br />13069 Orono Parkway <br />Elk River MN 55330-0430 <br />Re: Orono Lake Dam Inspection <br />Dear Mr. Adams: <br />Thank you for the opportunity to submit this proposal for professional services for conducting an <br />inspection at the Orono Lake Dam. This letter presents our proposed scope of services, time <br />schedule, fee, and contract terms and conditions. <br />Project Description <br />The Orono Lake Dam has not been inspected by a Professional Engineer with experience in <br />dam inspection for. many years. The Municipal Utility Department is requesting an inspection of <br />the dam. <br />Scope of Services <br />1. Provide a Professional Engineer registered in the State of Minnesota to complete an <br />inspection of the Orono Lake Dam. This inspection will consist of visually inspecting the <br />dam gates, spillways, abutments, embankments and operating mechanisms. The <br />inspection will be limited to what can be seen from the surface of the structure. The <br />inspection does not include entry into any confined spaces or aerial climbing inspection <br />(these services can be provided if needed). <br />2. The US Army Corp of Engineers completed an inspection of this dam in 1978. We will <br />review this report and compare findings of that inspection to the dam's current condition. <br />Typically these reports include a summary of the dam's hydrology and hydraulics. We <br />will use this information and other stream flow information which may be available to <br />assess the dam's spillway capacity. <br />3. If any structural computations have been completed and are available, we will review <br />these. Otherwise we will evaluate the structural configuration of the dam and provide <br />recommendations for additional analysis if warranted. <br />4. Complete an itemized opinion of probable cost to replace the dam. This estimate will <br />assume that the entire dam needs to be replaced, but will include itemization as <br />requested by the City's insurance carrier. <br />File: k:\water resource eng\administrative files\marketing\elk river mn\111128.docx Project: 00-0008.26 <br />3433 Oakwood Hills Parkway « Eau Claire, WI 54701-7698 » 800.666.3103 • www.AyresAssociates.com <br />