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Joe Lamanna <br /> July 11, 2018 <br /> Page 4 <br /> Summary of Well Yield Projections <br /> Pumping 1 7 30 <br /> Period(day): <br /> Pumping Rate 428 422 418 <br /> (gpm): <br /> The June 2018 pumping test information indicates that the well has a specific capacity (a general <br /> measure of well performance determined by dividing the pumping rate by the drawdown) of <br /> approximately 26 gallons per minute per foot of drawdown. Based on the specific capacity <br /> analysis and the 18.64 feet of available drawdown in the well, the well should be capable of <br /> producing up to approximately 480 gpm for shorter pumping periods. This analysis generally <br /> confirms the well yield projections presented in the table above based on the Theis equation. <br /> Based on the Theis equation well yield projections,the A&W well should be capable of producing <br /> up to approximately: <br /> • 616,320 gallons or 1.89 acre-feet per day <br /> • 4,253,760 gallons or 13.05 acre-feet per week,which exceeds the weekly pumping limit of <br /> 8.5 acre-feet <br /> • 18,057,600 gallons or 55.42 acre-feet per month, which exceeds the monthly pumping <br /> allowed under the weekly pumping limit of 8.5 acre-feet <br /> The projections presented above represent potential operational scenarios achievable under current <br /> aquifer conditions and characteristics based on the data collected during the 8-hour pumping test. <br /> The South Platte River alluvial aquifer is a dynamic system at this location affected by many <br /> factors including, but not limited to, stream flow conditions in the South Platte River, Big Dry <br /> Creek and Little Dry Creek, irrigation practices and nearby ditch flow (especially flow in the <br /> Lupton Bottom Ditch), precipitation, nearby well operation and RMCC's dewatering and water <br /> storage operations in the Stage 6A and 6B gravel pits. <br /> Comparison to February 2018 Pump Testing <br /> • The static water levels measured in both the pumping and monitoring wells prior to the <br /> June 2018 pump testing were higher (shallower) than the waters levels measured in the <br /> wells prior to the February 2018 pump testing. <br /> o The static water level in the pumping well was approximately 4.33 feet higher. <br /> 0 The static water level in the monitoring well was approximately 3.88 feet higher. <br />