SITE INFORMATION AND CORRESPONDENCE

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Page 2 • Concern #2 The test was run for five and a half hours. This may not have been long enough to see any changes in other wells. Answer #2 It is my understanding that the primary purpose of the pump test was to determine whether or not the water bearing zones within the screened intervals of monitoring wells MW-6 (deep) and MW-4 (shallow) are hydraulically connected. Monitoring well MW-4 is less than 10 feet away from monitoring well MW-6. The pump test resulted in a very rapid draw-down of 1421 feet in monitoring well MW-6 with no affect on the depth of groundwater in monitoring well MW-4. Five and one half hours under these draw-down conditions appeared to be more than adequate to conclude that there was no immediate (close) hydraulic connection between the water bearing zones within the screened intervals of monitoring well MW-4 and MW-6. Concern #3 Continuous recorders were not used to monitor the wells. Only five water level measurements were collected from well MW-1, MW-2, MW-3, and MW-5, including the static water level measurement prior to pumping. The next measurements in these wells were collected three hours after the pumping test began and then at intervals of up to one hour. There is not enough data to draw any conclusions from these wells. Answer #3 Again, it is my understanding that the primary purpose of the pump test was to determine whether or not the water bearing zones within the intervals of monitoring well MW-6 and MW-4 are hydraulically connected. I agree with your statement that "there is not enough data to draw any conclusions from these wells " (referring to wells #MW-1, MW-2, MW-3, and MW-5). Concern #4 Water levels in monitoring wells MW-1, MW-2, and MW-3 fluctuated from 0.1 to 0.16 feet during the test. However, water levels MW-4 and MW-5 did not fluctuate during the test. The following day water levels were measured at two times during the day (four hours apart) to see if ground water fluctuated in the three wells, without pumping MW-6. The water levels in the wells fluctuated 0.04 to 0.05 feet. Are there any outside influences on the wells that could cause these fluctuations? Static water level measurements should have been taken the day before the test, at regular intervals to check for any fluctuations in the wells. Answer #4 Pumping from local irrigation wells and tidal effects could contribute to fluctuations in the groundwater levels in monitoring wells MW-1, MW-2 and MW-3.