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<br />. Federal agency programs and activities; federal legislation; <br />. State statutes and administrative procedures for regulation of water supply and water use, including <br />water rights laws, administrative regulations and procedures, environmental permits, water and energy <br />programs, and building and plumbing codes; state legislation; <br />. Interstate compacts, court decrees, local water agreements; <br />. City ordinances or resolutions, agreements, and programs, including current efforts to reduce waste of <br />water, rate structures and policies, land use planning, and building and plumbing codes. <br /> <br />Estimated Water Savings <br /> <br />An analysis was performed by Gronning Engineering Company to estimate water savings based on the <br />implementation of the water conservation measures and recommendations were formed regarding those <br />measures applicable to Durango. The tables below show which measures were evaluated by Gronning <br />and the projected water savings based on their successful implementation. A total water demand of200 <br />gped was assumed and of the 200 gpcd total water demand, 130 gpcd is assumed to be inside use and 70 <br />gpcd is outside use. <br /> <br />Water Conservation Measures Evaluated/or Implementation <br />1. Inverted water rate structure. <br />2. A public education and administration program consisting of the following measures: <br />. Develop and publicize an ET and irrigation efficiency program to assist residents, the parks <br />department, school district, the golf course and Fort Lewis College in applying the proper amount of <br />water for irrigation. <br />Assist Fort Lewis College and the golf course in developing water conservation plans. <br />Develop a public education program to assist in implementing the conservation program. A similar <br />program should be initiated in the schools. <br />Investigate a possible ordinance regarding water-use for landscaping purposes in new developments <br />in the City with the assistance of a public input process. <br />Change the format ofthe current water bill to allow customers to observe changes in their water <br />consumption. Ideally, the new format should show water usage from the previous year or more so <br />that residents can monitor their individual water conservation efforts. <br />Develop a system to monitor the progress of the program. The amount of water conserved and <br />costs/savings to the City should be monitored and reported annually. <br />Implement an ordinance requiring low-flow fixtures in all new developments. <br />3. Low-flow fixture retrofit program. Since an estimate of the number of fixtures that would be required <br />for the retrofit program is not available, a survey to determine the number of low-flow fixtures <br />currently in operation should be conducted. For purposes of the Gronning study, it was assumed that <br />approximately one-half of the fixtures, or approximately 2,500, in the City would require retrofitting. <br /> <br />Projected Water Savings With Water Conservation Program <br />Measure Savings <br />1. Inverted Rate Structure 7% of Total Demand <br />2. Public Education and Administration 7% of Outside Demand <br />Program + 2.5% of Total Demand <br />3. Retrofit - Low-flow fixtures (Assume <br />6% of inside demand and <br />50% of fixtures retrofitted) <br /> <br />Total Water Savings <br />14 gpcd <br />10 gpcd <br /> <br />4 gpcd <br /> <br />Financial Analysis <br /> <br />A financial analysis combined with comparison of water savings was performed to determine the cost <br />effectiveness of the water conservation measures described above for a population of 30,000. The <br />estimated costs for each measure were converted to annualized costs based on a life cycle of twelve years <br />at an interest rate of 6%. By using the annualized costs and projected water savings, costs per acre-foot of <br />savings and costs per mgd of capacity reduction were computed. Results of the analysis are shown in <br />below. <br /> <br />Financial Analysis <br />Measure <br /> <br />One- <br />time <br />Cost <br /> <br />Annual Annualized <br />Cost Cost <br /> <br />Annual <br />Water <br />Savings <br /> <br />$ per <br />afof <br />savings <br /> <br />Max. Day $ per <br />Reduction mgd of <br />Capacity <br /> <br />13 <br />