Laserfiche WebLink
� <br /> f� � � <br /> OF'�FC <br />', w 9.� <br /> v � a <br /> �\i♦�%' II <br />' '�l L I N O�`'� �i <br /> October 6,2000 II <br /> ENGINEERING & INFRASTRUCTURE MEMOR.ANDUM II�, <br /> NO. 2000 - 21 I�, <br /> MEMORANDUM TO: Honorable Mayor and City Council <br /> FROM: Steve Garman, Jr., City Manager � II��i <br /> Stephen Swanson,P.E.,Acting Dir. of Eng. & Infrastructure����� ' <br />' Richard Berard, Civil Engineer II ,� i <br /> SUBJECT: Design of Repairs to Lake Decatur Dam , <br /> City Project 2000-41 '� <br /> The City operates and maintains Lake Decatur Dam located on the Sangamon River. The ', <br /> dam was originally constructed in 1922 to ensure an adequate source of water. The Lake creates I <br /> an impoundment of approximately 6 billion gallons. The raw water from Lake Decatur is the ', <br />' sole source of water for the City's water treatment plants. '� <br /> A visual inspection of the dam was performed in November 1999 by an engineering II <br /> consultant firm, Harza Engineering Company. The inspection, carried out in accordance with �, <br /> operating permit number 18207 and the requirements of the Illinois Department of Natural <br /> Resources, resulted in a report entitled "Lake Decatur Dam-1999 Annual Inspection". ' <br /> The report identifies a number of recommendations for the maintenance of the dam. While � <br /> the current condition of the dam does not pose an immediate threat to its structural integrity and I <br /> functionality, it is the recommendation of the Consultant that remedial measures be undertaken at � <br /> this time. <br /> The design for a number of the recommended repair work items is being carried out <br /> in-house by City staf£ However, there are a number of items that require specialized expertise ', <br />, and Harza was requested to submit an `Bngineering Services Proposal" to undertake a design for �, <br />' those items. Harza offers exceptional qualifications in undertaking this type of design. Because I, <br /> , 1 <br />, of Harza s familiarrty wrth the work required to restore the condrtion of the dam, there wou d be <br />� . i <br />