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<br />EXHIBIT A <br /> <br />OVERVIEW OF THE MODEL <br /> <br />The purpose of the proposed project is to provide a sophisticated decision making tool <br />which will allow a user to observe how their water system is impacted by the implementation <br />of a wide array of water conservation measures. The tool will permit an entity to evaluate <br />a myriad of water conservation options to eliminate anticipated shortages or financial <br />constraints, and explore how best to integrate water conservation into their system. These <br />will include both structural and nonstructural alternatives. Economic information will be <br />included so that the impact of each strategy on future revenue can be seen. <br /> <br />Figure 1 shows the functional elements of the model. The model will be controlled <br />through an interactive, menu driven, executive program. This will provide access to the <br />operational modules. <br /> <br />Results of the model will consist of tabular and graphical information on end-of-month <br />reservoir storage, frequency and severity of shortages to customers, monthly demands and <br />supplies and monthly costs attributable to the projected program. <br /> <br />DETAILED DESCRIPTION OF MODEL <br /> <br />The model will operate on a monthly time-step over a historically based study period of at <br />least 20 years. It will permit an entity to simulate the monthly operation of their unique <br />water supply system over the entire study period. The program will display for the user: <br />demands, supplies, deliveries and reservoir contents either in tabular or graphical form for <br />quick and easy reference. .It will also highlight incidents of shortages and calculate average <br />annual income and cost for the system. The graphs produced by the model will be <br /> <br />9 <br />