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Page 7 <br />Table 6. Evaluation of Long-Term Specific Capacity and Low-End Well Yield Analysis <br />tĞůů/ <br />24-Hr Well <br />Yield <br />(gpm) <br />24-Hr Well <br />Efficiency <br />Assumption <br />(%) <br />30-ĂLJ <br />Well <br />Yield 1 <br />(gpm) <br />30-ĂLJtĞůů <br />Efficiency <br />Assumption2 <br />(%) <br />90-ĂLJ <br />Well <br />Yield 1 <br />(gpm) <br />90-ĂLJtĞůů <br />Efficiency <br />Assumption2 <br />(%) <br />Tennis <br />Park 3,400 50 3,200 54 3,100 55 <br />Hansen <br />Park 3,400 50 3,100 55 2,950 58 <br />Del Prado <br />Park 1,300 75 1,200 80 1,150 83 <br />1Well yield estimate at the original assumed well efficiency. <br />2Required well efficiency assumption to maintain the original 24-hour baseline pumping capacity. <br />As indicated in Table 6, use of longer-term specific capacities results in either slightly lower pumping <br />capacities (generally, a reduction of 10% or less) or the need to assume slightly higher well efficiencies <br />(from 50% to as much as 58%, and from 75% to as much as 83%). Overall, the impact of accounting for <br />longer-term specific capacities (in and of itself) does not appear to require adjustments to the original <br />well capacity estimates (because the increased well efficiencies are still reasonably attainable). Additional <br />discussion of the combination of longer-term specific capacities and mutual well interference is provided <br />below. <br />Mutual Well Interference Considerations <br />Methodology <br />Calculations of mutual well interference using the Theis equation requires input values for transmissivity, <br />storativity, time of continuous pumping, and pumping rate. Calculations were made for continuous pumping <br />durations of 30 and 90 days. Assigned pumping rates were 3,400 gpm for Tennis and Hansen Park well sites, <br />and 1,300 gpm for the Del Prado Park well site. Transmissivity and storativity were initially estimated based <br />on calibrated model parameters with subsequent slight adjustments based on reviewedof observation well <br />drawdowns measured for each constant rate pumping test. The final assigned values of transmissivity and <br />storativity associated with pumping from each well are summarized below in Table 7. <br />Table 7. Summary of Assigned Transmissivity and Storativity Values <br />tĞůů/Transmissivity (gpd/ft)Storativity <br />Tennis Park 190,000 0.0008 <br />Hansen Park 200,000 0.0015 <br />Del Prado Park 200,000 0.0015 <br />Note: Distances between wells are as follows – Tennis to Hansen = 1,900 ft.; Tennis to Del Prado = 3,550 ft.; and <br />Hansen to Del Prado = 3,450 ft.