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<br />Metropolitan Water Supply Investigations - Phase II Plan of Study <br />8/16/94 5:04 PM . <br /> <br />Page 10 <br /> <br />d) Sub-Task Leader: Mark Palumbo <br /> <br />2. Sub-Task 4b: Artificial Recharge Technical Issues - <br />Denver Basin Aquifers <br /> <br />a) Purpose <br />Based on information reviewed, analyses performed and knowledge of <br />Denver Basin aquifers, examine and explain the technical issues related to <br />Denver Basin aquifer artificial recharge. <br /> <br />b) Approach <br /> <br />Review technical information on artificial recharge of deep aquifers which will <br />include: Willows Water District/Denver Water/USBR Denver Basin <br />Demonstration Project, Centennial Water and Sanitation District Aquifer <br />Storage and Recovery Project, Denver Water information, other conjunctive <br />use proposals or projects, USGS s'tudies, previous modeling studies, <br />interviews with key people and case study information on deep bedrock <br />aquifer recharge outside of the Denver Basin. <br /> <br />Evaluate: achievable injection/infiltration rates and volumes, effects on the <br />recharging wells, effects on the aquifer, water quality issues, <br />recommendations on: well cleaning requirements, timing and volume limits on <br />storage and retrieval, potential long range issues. <br /> <br />Evaluate economic issues related to recharging Denver Basin aquifers: drilling <br />costs, equipping costs, 0 & M costs, equipment replacement costs, and power <br />costs. Costs for recharge will be presented on a traditional cost per acre foot <br />basis. <br /> <br />c) Output <br />A memorandum report presenting compiled findings with accompanying <br />graphs, maps and tables as needed. <br /> <br />d) Sub-Task Leader: Mark Palumbo <br /> <br />3. Sub-Task 4c: Resource Assessment of South Platte Alluvial Aquifers <br /> <br />a) Purpose: <br />The major part of the South Platte alluvial system between Chatfield and <br />Greeley is found in a narrow band adjacent to the streams. Ground water <br />storage is limited due to the relatively short time before recharge water returns <br />to the surface system. Therefore the conjunctive use committee decided to <br />