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<br />e <br /> <br />e <br /> <br />Phase 1 of the study concluded that the problem should be analyzed as an <br />aquifer drawdown problem where the relationships among aquifer drawdown, the <br />pumping water level in a well, and production from a Denver Basin aquifer well is <br />understood. The problem can be stated as follows: How does well production from the <br />Denver Basin aquifers change in response to reduced saturated thickness and lower <br />pumping water levels? Well production is important because it is the measure of an <br />aquifer's production. Additionally, the costs of well installation, operation and <br />maintenance over time to maintain aquifer production will be the basis of the economic <br />analysis. <br /> <br />This Phase 2 study is intended to provide insight into the costs of ground-water <br />production from the Dawson, Denver, and Arapahoe aquifers which supply water in the <br />Denver Basin of Colorado. This initial effort is meant to develop the methods to <br />analyze Denver Basin aquifer wells and to calculate the cost of ground-water production <br />at some well locations. The results of the well analyses cannot be applied basin wide. <br />The study results show significantly different results for wells located in different areas <br />of the Denver and Arapahoe aquifers. However, the results have some applicability to <br />other wells located within the same aquifer area. Additional work should be performed <br />on more wells in each aquifer to determine the production costs in additional aquifer <br />areas. <br /> <br />Development of the ground water stored in the Denver Basin aquifers has resulted <br />in regional declines in water level and increased pumping costs within some areas of <br />the aquifers. In some aquifer areas water levels have risen. At some time, costs to <br />produce the ground water may exceed the costs of other possible water supplies, <br />making the other supplies more attractive. Our goal is to estimate the relationship <br />between ground water production and cost over the next 50 years at several well sites <br />in the Denver Basin. <br /> <br />Previous wolk has provided estimates of regional water levels in the Denver Basin <br />e under several possible development scenarios. These modeling studies provide a <br /> <br />2 <br />