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Site Background Information: Thater Property(former Tucker Construction) <br /> Page 4 of 4 <br /> • On 28 July 2006, a variable-rate aquifer pumping test was performed to assess the general <br /> ground water aquifer characteristics and to assess aquifer response to ground water <br /> extraction. During the test, a maximum ground water draw-down of approximately <br /> 11.07 feet was observed in extraction well MW-1 following 6 hours of pumping operation; <br /> in addition, ground water draw-down was observed in observation wells MW-2 through <br /> MW-4. AGE projected a theoretical ROI for MW-1 of approximately 94 feet at 2.0 GPM, <br /> 122 feet at 3.0 GPM, and 118 feet at 4.0 GPM. Laboratory analysis of extracted water <br /> detected BTEX compounds in the ground water samples collected at 0815-hr at <br /> concentrations of 4.2 µg/1 ethylbenzene and 12.6 gg/l xylenes, and at 1000-hr at a <br /> concentration of 2.5 µg/1 xylenes.No petroleum hydrocarbon constituents were detected in <br /> the samples collected at 1200 hr or 1400 hr. <br /> Advanced GeoEnvironmental,Inc. <br />