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Scope of Work <br />SMWSA Regional Aquifer Supply Assessment <br />4. Identify potential locations to conduct a regional ASR demonstration project <br />within the south Metro area. <br />Tasks <br />This study is divided into f our tasks, addressing each of the objectives. The f ollowing <br />is a list and description of tasks to be completed under this work plan. <br />Task 1 Evaluate Aquifer Characteristics <br />Recent studies have been undertaken at both region and local scales to identify <br />aquifer characteristics that can assist in understanding the impacts of pumping and <br />artificial recharge. The characteristics pertinent to aquifer hydraulics analysis include <br />aquifer properties including transmissivity and storage coefficient, aquifer <br />configuration, and percent sand/silt in each aquifer. Significant studies include those <br />conducted for the CWCB under the South Platte Decision Support System (CDM <br />2007a-d) and the SB06-196 Underground Water Storage Evaluation (CDM 2007e), the <br />South Metro Water Supply Study (Black & Veatch 2004), Castle Pines North Metro <br />District Integrated Water Resources Plan (CDM 2006) and work being conducted by <br />the Denver Museum of Nature and Science and by the Colorado Geologic Survey. <br />Collectively, these incorporate numerous past studies of the Denver Basin aquifers <br />conducted by the USGS, DWR and other entities. The SMWSA also has a variety of <br />aquifer test reports associated with well drilling that provide detailed information at a <br />local scale. <br />This task will compile inf ormation and data f rom these reports and will develop <br />updates of the aquif er conf iuration and aquifer properties. Information and maps <br />presented in the South Platte Decision Support System reports would serve as a <br />starting point for any updates to the aquifer characteristics that are deemed <br />significant. <br />Task 2 Characterize Aquifer Pumping and Its Effects <br />Groundwater pumping and aquifer water levels are measured by the water providers <br />in the south Metro area. This inf ormation will be compiled into common databases <br />that will have consistent reporting units f or each category of data. These data will be <br />used to characterize the location, duration and amount of pumping and how this has <br />changed over time. These data will also be used to characterize how groundwater <br />levels have changed over time in each aquifer. Relationships between changes in <br />aquif er water levels and pumping will be developed. <br />Task 3 Analyze Pumping Costs <br />Information relating to water production cost f rom the south Metro water providers <br />will be obtained and compiled. Costs will be compared to the well production data <br />collected in Task 1.2 to develop and understanding of the cost per unit volume of <br />delivered water by each provider. This inf ormation will be evaluated for both spatial <br />and temporal trends to identif y areas where delivered water is relatively more or less <br />expensive to produce and optimize operations. <br />3 <br />C:1Documents and SettingslrowannclDesktoplTo File BacklSouth Metro 179 Grant ApplicationlSMWSA179SOW.doc <br />