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<br />Available 'Vater Rights <br /> <br />Table B-] lists the adjudicated non-tributary groundwater rights available to Castle Pines North. <br /> <br />Table B-1 - Castle Pines North Water Rights <br /> <br />I class.ification Aquifer Source Annual Appropriation <br />I (ac-ft/yr) <br />Nontributary Dawson 693 <br />~otal Denver 1,462 <br />Arapahoe 1,724 <br />Laramie-Fox Hills 696 <br /> 4,575 <br /> <br />In addition, Castle Pines North can develop return flows from non-tributary groundwater sources <br /> <br />Conservation <br /> <br />Castle Pines North is a member of the Plum Creek Wastewater Authority (PCW A) and is <br />participating in the development of a regional reuse project that will deliver treated effluent from <br />Plant # 1 on Plum Creek for use on the Ridge Golf Course and open space areas. Under future <br />conditions, it has been estimated that 828 acre-feet per year of effluent from Castle Pines North <br />will be available from Plant # 1 and that 275 acre-feet per year of outdoor demands could be met <br />by delivering the treated effluent in a new pipeline along Daniel's Park Road. <br /> <br />At this time Castle Pines North is developing a lawn irrigation return flow recapture program by <br />constructing weirs in local drainages with alluvia] wells recovering flows for subsequent reuse in <br />outdoor areas. <br /> <br />In addition to the development of a nonpotable reuse system, the District promotes conservation <br />through an increasing block rate structure, landscaping guidelines and compliance with the low <br />flow plumbing appliances specified by the Uniform Plumbing Code. <br /> <br />Water Levels <br /> <br />Castle Pines North has been monitoring water levels in production wells since at least 1984. A <br />complete history of water levels for each of the wells is included with the well inventory. The <br />average rate of decline in static water levels for the Arapahoe wells based on 16 years of data is <br />36 feet per year. Wells A-I, A-2 and A-3 averaged drops in static water levels on I feet per year. <br />Heavy use of Well A-4C during year 200 I resulted in both the static water level and the pumping <br />water level operating below the top of the aquifer during the middle of the summer. This well <br />experiences the greatest rate of decline at 51 feet per year for the period from 1996 through 2001. <br />Well A- T s static water level is at the top of the Arapahoe formation and the district will closely <br />monitor well production capacity to establish whether there are declines in deliveries, well <br />efficiencies and water level recovery with protracted operation under unconfined conditions. <br /> <br />The District's A-I Arapahoe well has seen a static water level decline from an elevation of 5330 <br />feet in 1984 to elevation 4950 feet in 2000. Pumping water level declines of250 feet are seen <br />when this well is pumped at an average 300 gallons per minute. Figure B-2 illustrates the water <br />level declines that have been measured in the A-I Arapahoe well over the last 15 years. At this <br />