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,~ <br />WATER SUPPLY PLAN- 42.75-ACRE SITE, PROPOSED SUBDIVISION, NE;SE~ <br />SECTION 76 AND NW~SW4 SECTION 25, T1S, R67W, ADAMS COUNTY, COLORADO <br /> <br />TheFroposed subdivision will consist of 14 lots: nine 1-acre <br />residential lots, four 2-~--acre residential lots, and one commer- <br />~ cial lot approximately one acre in size. A lake resulting from <br />the prior gravel mining operations will be used for recreation. _ <br />The lake will be approximately 20 acres in size. <br />'• <br />Water supply will be from a community water system utilizing the <br />Arapahoe formation. Individual sewage disposal systems will be <br />~ utilized. Deed and covenant restrictions will be provided limit- <br />ing irrigated area to 8000 square feet per lot. Assuming 15% <br />return flow from irrigation, consumptive use for irrigation of 14 <br />~ lots at 8000 square feet per lot irrigated area and an application <br />rate of 2 acre-feet per year would be 4.37 acre-feet per year. An <br />augmentation program will be established to supply make-up water <br />~ for this consumptive use. It is currently proposed to utilize <br />r <br />GASP for the augmentation program. An agreement has been made with <br />the owner of existing well ~2-0092 to provide 100-acre feet per <br />~ year from that well to the subject property. The Arapahoe well <br />could be utilized as an alternate point of diversion for 100 acre- <br />feet from this well, to permit applying to GASP with an existing <br />~ well. If GASP water should not be available, a program utilizing <br />the Laramie-Fox Hills aquifer, surface water rights, or some other <br />source would be utilized. <br />~ Based on a use rate of .3 acre-feet per year per house and a return <br />flow of 90;G, consumptive use for in-house use would be 14 lots x <br />I• <br />I• <br />I• <br /> <br /> <br />