Laserfiche WebLink
<br />I <br />I. <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />Ie <br />I <br />I <br />I <br />I <br />I <br />I <br />I. <br />I <br />I <br /> <br />in well discharge to one-half of the original rate and adjustment of boundary conditions to reflect <br />the expected closer well spacing. The model should then be rerun from the beginning of the <br />simulation with two pumping periods such that the well does not go dry and the model transitions <br />to the second stress period with the lower pumping rate. This procedure of dividing the pumping <br />rate in half, adding a stress period, adjusting the boundary conditions, and restarting the <br />simulation may occur again before the end of the simulation period. It is anticipated that a <br />50-year simulation from 1997 to 2046 will be perfonned. <br /> <br />If the results from the layered radial flow model are determined to be more accurate than <br />the radial correction flow model analysis, the pumping water levels from the layered radial flow <br />production analysis will be used in the economic analysis. In this case economic analyses will be <br />perfonned for Arapahoe aquifer wells in the northern metro area, the southern metro area and <br />south of the Palmer Divide. If radial-flow correction analyses are not perfonned on the Dawson <br />and Denver aquifers, an additional layered radial flow production and economic analysis may be <br />perfonned on a Denver aquifer well in the southern metro area. <br /> <br />For each aquifer analysis under this task, the following specific tasks will be perfonned: <br /> <br />1. Select a well within the radial flow correction model cell area. <br />2. Analyze the well's geophysical well log to evaluate aquifer layering. <br />3. Determine the well's maximum sustained production rate. <br />4. Evaluate the aquifer hydraulic conductivity. <br />5. From the regional groundwater flow model, determine regional annual groundwater level <br />declines. <br />6. Select an appropriate layered-radial numerical groundwater flow model code. <br />7. Develop the input files for the model run. <br />g. Run the model at the same pumping stress as the well in the radial flow correction analysis <br />and over the same pumping period. <br />9. Analyze results from the model. Create a hydrograph of pumping water level. <br /> <br />15 <br /> <br />HRS WATER CONSULTANTS, INC <br />