R98-05 AUTHORIZING THE EXECUTION OF AN AGREEMENT

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ATTACHMENT A SCOPE OF SERVICES Owner: City of Decatur, Illinois Engineer: Black & Veatch ', Project: South Water Treatment Plant Raw Water Intake Evaluation City Project 9732 The Scope of the Services for the Project shall be as follows. Work will start with the execution of this Agreement. TASK SERIES 100 - INVESTIGATIONS AND ASSESSMENTS This group of tasks involves use of existing information to develop an ' inventory of potential spill situations that may endanger the quantity or quality of the raw water supply and their relative risks. The study will be limited to spills in the Lake watershed from the Route 36 bridge to the dam. The study area does not include the Big Creek sub- watershed. The OWNER will be responsible for providing an inventory of the stormwater conveyances discharging to the Lake in the study area. Task 101 Review Existing Information. Existing information from agencies such as the Illinois Department of Transportation, Illinois Department of Natural Resources, and the Illinois EPA; the CSX Railroad; and various departments of the OWNER will be reviewed to identify historical and potential future spills of hazardous materials that might restrict the water supply at the South Water Treatment Plant (SWTP) . The effort will include interviews with Haz-Mat staff inembers at ADM, Staley, and Bodine Environmental to determine the types of spills they are prepared to control . This information will be considered in identifying the types of spills that may occur in the future. Task 102 Develop Inventory of Potential Spill Situations. From the information assembled in the previous task, an inventory of potential sources of spills that might affect the raw water supply will be developed. As availability of data permits, the inventory will list the source (e.g. tank truck) , the type and quantity of material carried by SLW24:002 A—1 December 15, 1991