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04 December 2007 <br /> AGE-NC Project No. 99-0592 <br /> Page 7 of 7 <br /> Solinst Leveloggers Model 3001 instruments will be deployed in selected monitoring wells,to obtain <br /> draw-down measurements at I-minute intervals to measure difference in ground water levels before <br /> and during well pumping.The Leveloggers utilize ceramic pressure transducers to record water level <br /> data, which can be downloaded to a computer via an RS232 Optical infra-red data reader/port <br /> connected to a computer.The Levelogger data will be compared to water level measurements taken <br /> manually from the observation wells at timed intervals. <br /> Barometric measurements will be collected from a dedicated pressure transducer to determine the <br /> atmospheric influence on the pressure transducer values.From this data the results of the draw-down <br /> test will be adjusted to correct for any changes in atmospheric pressure. <br /> During the 48-hour pump tests,the ground water pumping rate will be at a continuous rate between <br /> 5 and 6 gallons per minute(GPM),to achieve the optimum pumping rate for the greatest draw-down <br /> influence. If the decline of the ground water level is not satisfactory within the first 48 hours of the <br /> pilot test, additional testing will be performed to achieve sufficient ground water draw-down. <br /> During the 48-hour pump tests,ground water samples will be collected from the effluent line at the <br /> initiation of the test,approximately every 2 hours after pumping is initiated,and just before the end <br /> of the pump test. The samples will be handled as described in Section 2.2.3. above and will be <br /> analyzed by a CDPH-certified laboratory for the constituents listed in Section 2.2. All extracted <br /> ground water will be stored in a temporary, aboveground storage tank. Subsequently, the purged <br /> ground water will be characterized and transported to a suitable waste disposal/recycling facility. <br /> r <br /> Advanced GeoEnvironmental,Inc. <br />