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� . _ � � Appendix I <br />' SCOPE OF SERVICES <br /> TASK A. Data Collection and Review <br /> In evaluating both the direct discharge and the pipeline conveyance alternatives, Harza <br /> will collect and review available data pertaining to hydrology, soil classification, land use, <br /> water quality, permitting requirements and other topics central to this investigation. <br /> Team members will contact representatives of the U.S. Geological Survey (USGS), the <br /> Agricultural Extension Service, the Soil Conservation Service (SCS), the Illinois Environ- <br /> mental Protection Agency (IEPA), the Illinois Department of Transportation (IDOT), <br /> county highway authorities, and other appropriate sources in preparing to address the <br /> technical and economic issues that will determine the favored alternative. Previous work <br /> conducted by Guillou and Associates, Inc. for the Client will be reviewed and used as <br /> appropriate. A total of 128 manhours have been budgeted for this task. <br /> TASK B. Direct Discharge Alternative <br /> Harza's investigation of the direct discharge conveyance alternative will focus on three <br /> key issues: <br /> 1. Under drought conditions when natural stream flows are extremely low, how <br /> much of the ground water pumped into Friends Creek will flow directly to <br /> Lake Decatur and how much will be held in bank storage, contribute to deep <br /> seepage, or otherwise be unavailable to supply the Client? <br /> 2. What are the environmental consequences of discharging 25 MGD of <br /> groundwater into Friends Creek during periods of low natural flow. In light <br /> of these impacts, what course of action is IEPA likely to allow? <br /> 3. What impacts will conveyance of groundwater via Friends Creek have on <br /> riparian lands? In particular, augmenting flow in Friends Creek may <br /> submerge outlets to farm drainage systems. If this occurs, what consequences <br /> may result and what measures may be taken? <br /> The following subtasks will be undertaken to evaluate these issues. <br /> s9ioiz <br /> A893092N-APP.I 1-1 <br />