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' ' Mr. Stephen P. Swanson <br /> City of Decatur <br /> Page 2 <br /> July 27, 1999 <br /> 3. Calibrate model with approximately 15 fire-flow tests performed by ENGINEER with <br /> assistance from O WNER. The performance of the fire flow tests will be coordinated with <br /> OWNER to avoid time periods where the water supply is restricted. <br /> 4. Develop system storage and supply needs to meet the City's required minimum required <br /> operating procedures, flow, fire protection, and operations reserve requirements. <br /> 5. Submit a preliminary draft of the analysis of historical water use,future demands,system <br /> storage and supply needs, and the computer calibration for City review. Attend a <br /> working meeting in Decatur to discuss project progress;discuss the previously submitted <br /> preliminary report draft and discuss the plan for modeling of the distribution system. <br /> 6. Perform steady state and extended period simulations to predict the performance of the <br /> distribution system under a variety of demand conditions and potential improvements, <br /> including new storage facilities and water main reinforcements. The simulations may <br /> include various combinations of the following facilities and operations: <br /> a. Average daily and peak demands. <br /> b. New distribution mains. <br /> c. Stand pipe versus elevated storage tank. <br /> d. New south water tank. <br /> e. Williams Street pumping station. <br /> f. Existing elevated storage tanks. <br /> g. SWTP operating/production levels. <br /> h. Note any negative impacts to the remainder of the system. <br /> i. Assess estimated water quality of water in the system as it relates to retention <br /> time in storage facilities and pipes. <br /> j. Provide maps with the overlay of pressure contours of the northeast area to <br /> provide a graphic representation of estimated pressures in the area. <br /> �. . <br /> STRAND <br /> ASSOCIATES. INC <br />