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1 � <br /> oF'Dfc <br /> h 9� <br /> � C <br /> v � <br /> �iti%� <br /> '/[LINO\Y <br /> October 27, 2000 <br /> WATER MANAGEMENT MEMORANDUM <br /> NO. 2000 - 10 <br /> MEMORANDUM TO: Honorable Mayor and City Council <br /> FROM: Steve Garman, City Manager G <br /> Stephen P. Swanson, P. E., Acting Director of Water Management�( <br /> Keith D. Alexander, Lake Manager (� <br /> SUBJECT: Lake Decatur Mechanical Dredging <br /> During Low Lake Level Feasibility Study <br /> The Lake Capital Fund includes money in the current fiscal year for the above-referenced <br /> study, which was suggested by City staff in response to Council inquiry as to whether certain <br /> areas of Lake Decatur could be dredged when the lake water level is extremely low. The Council <br /> inquiry occurred late last year as the lake dropped 2.1 feet below its normal level. <br /> In order to examine the Council's request in greater detail, City staff asked Cochran & <br /> Wilken, Inc., the consulting engineering firm that was evaluated second best for the Basin 6 <br /> dredging engineering services contract, if they were interested in providing low lake level <br /> dredging feasibility study services. <br /> The enclosed contract and resolution are the result of these negotiations. Cochran & <br /> Wilken, Inc., will provide the following: <br /> 1. Conduct sedimentation surveys of the three potential dredge areas identified on the <br /> enclosed map. The areas are commonly referred to as the Staley hot water ditch, <br /> Bayview Cove and Sand Creek south of Grove Road. <br /> 2. Obtain and analyze two sediment core samples from each of the three areas. <br /> 3. Evaluate potential ingress and egress considerations such as equipment mobilization, <br /> easement acquisition, site preparation, sediment removal, transport and disposal. <br />