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I I I I I I I I I I I I I I I I I I I .-j'i " r-- N2.2 AQUIFER TESTING t,~'~.; c:..., 2.2.1 Hooper Pool Well Testing Two aquifer tests, a constant-drawdown flow test and a shut-in recovery test, were performed on the Hooper Pool Well. Both tests were conducted on August 25, 1986, in conjunction with the attempted geophysical logging. A flow test, also called a constant-head or constant-drawdown test, consists of allowing a previously shut-in artesian well to flow without restricting the amount of water which is produced, During the period of flow, measurements were made of time and rate of flow. A shut-in test consists of recapping a well which had previously reached a stable rate of flow, and measuring the pressure (artesian head) buildup over a period of time. Graphs of time versus head buildup also can be used to interpret aquifer transmissivity. Flow rate at the Hooper Pool Well was measured for a period of approximately six hours, during which time the flow stabilized. Upon recap- ping the well, head buildup was measured for approximately two hours, until the head no longer increased. Due to apparent inflow of water to the well at a depth interval between 200 and 280 feet, as inferred from the geophysical logging, results of the testing are not expected to be representitive of the deep confined aquifer (HSU-3). The test results were interpreted, however, to add to the existing database of information on HSU-2. Figure 2.2 is a graph of the time versus flow rate measured during the constant-drawdown portion of the testing at Hooper Pool Well. The straight line drawn through the data points represents the best fit (linear regression) line for the data collected following the first minute of the flow period. Interpretation of the data carried out using the best-fit line shows the transmissivity to be approximately 132,000 gallons per day per foot (gpd/ft) (Appendix A) . The data collected during the first minute of the flow period were not 2-2