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<br />CONI <br /> <br />Castle Pines North Metropolitan District <br />Application for Water Efficiency Grant <br /> <br />Water use levels in 2003 and anticipated growth patterns were used to estimate future <br />water demands. 2003 baseline levels were chosen because metered data for most <br />customer types are available for this year4 and because the 2003 water demands <br />include active conservation measures and a high level of awareness regarding the <br />drought. As a result, future water demand projections assume that existing <br />conservation measures will contin.ue to be implemented and reinforced in the future <br />to ensure that water demands do not increase to pre-2003 levels. Additional <br />information on the methodology used to estimate water demands are provided in <br />Section 3.2 of the District1s 2006 Water Conservation Plan. <br /> <br />1.3 Future Water Supplies <br /> <br />As previously mentioned, the District currently relies on Denver Basin groundwater <br />wells for water supply. The Denver Basin, which supplies water to much of the south <br />metro area and northern El Paso COtultyJ is a non-renewable aquifer. <br /> <br />Although the District can currently meet its water supply needs, it is projected that <br />continued use of Denver Basin groundwater as the primary source of south metro <br />area water providers would result in a continued decline of groundwater levels. This <br />is attributed to the growing population and to the regional dependence on <br />groundwater. In that event, it is anticipated that the costs to maintain groundwater <br />production rates (e.g./' redrilling wells; increased pumping energy requirements) to <br />meet demands will escalate to the point that this source is no lon,ger economically <br />viable. <br /> <br />The District has participated in regional plaIU1.ing studies, including the recent South <br />Metro Water Supply Authority Regional Water MasterPlan. The District is a <br />proposed participant in Rueter-Hess Reservoir and in the Chatfield Reservoir <br />reallocation project. In addition, the District developed an Integrated Water Resources <br />Plan (IWRP) in 2006, which evaluated the District's demands, conservation measures, <br />and the short~term and long-term sustainability of the Districtls existing groundwater <br />supply. The IWRP proposed renewable water supply alternatives that would decrease <br />the Disbict's dependence on groundwater. These alternatives include a combination <br />of surface water supplies} reuse of reclaimed water, and conservation. Conservation is <br />a significant component of the District's future water management strategy. <br /> <br />4 These data was provided by Jehn Water Consultants, Inc. The 2003 metered customer types <br />do not correspond with the new customer billing categories (Table 1) used with the new <br />billing system installed in 2004. <br /> <br />6 <br /> <br />C:\DOCUMENTS AND SEITINGS\BLACKCA\DESKiOP\Cf'NGRANT\W A TE.R EFFICIENCY GRANT PROGRAM APPLICATION.DOC <br />