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<br />This science can be accomplished VIa a well-designed, peer-reviewed rainwater <br />conservation study. <br /> <br />The study proposes to evaluate potential water savmgs from under three different <br />conservation scenarios: <br /> <br />I. Use of efficient landscaping, improved irrigation system efficiencies, and <br />implementing rainwater conservation practices in new residential developments <br />for individual and common area irrigation, <br />2. Retrofitting a cistern to an existing home which currently uses groundwater <br />(domestic exempt groundwater well users) to supplement stressed groundwater <br />resources, and <br />3. Retrofitting an existing commercial occupancy (supplied by groundwater) with <br />catchments to provide common area irrigation. <br /> <br />The study will essentially examine the water balance under each scenario and compare it <br />to the water balance of that same scenario with conservation practices. The net <br />differential will then allow an augmentation plan to be structured to cover all depletions <br />associated with rainwater conservation practices. The following figure graphically <br />illustrates that process and this study. <br /> <br />Initial Water Balance <br />1 Research/determine ET of <br />native vegetation. <br />2. Calculate & estimate <br />consumptive use and return <br />flow. <br /> <br />Water Balance Uslnll <br />Rainwater Conservation <br />1. Estimate ET of <br />landscaping. <br />2 Calculate & estimate <br />consumptive use and return <br />flow under developed <br />conditions with rainwater <br />. conservation Infrastructure. <br /> <br />Rainwater <br />Conservation <br />Algorithm <br />(water balance) <br /> <br /> <br />Sample Augmentation <br />Plan (to make up <br />difference in return flow) <br /> <br /> <br />Identify source of <br />replacement <br />water <br /> <br />Identify entity <br />responsible for <br />replacement water <br /> <br />Figure 1 - Conceptual Project Model <br /> <br />5 <br />