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10 December 2001 <br /> AGE NC Project No 95-0143 <br /> Page 3 of 10 <br /> Purged ground water generated during the 8-hour step draw-down test was containerized in an on- <br /> site 5,500-gallon poly tank,purgedwater generated during the 24-hour constant rate draw-down test <br /> was containerized m an on-site 20,000-gallon steel tank <br /> 3 1 8-HOUR STEP DRAW-DOWN PUMPING TEST <br /> Prior to initiation of the test the depth-to-ground water was measured the extraction well EW-3 <br /> m <br /> and in observation wells EW-4, MW-3, MW-7, MW-9, VW-1, VW-2 and VW-4 using a Solinst <br /> water level meter During the pumping, test depth to water was measured in extraction well EW-3 <br /> at approximately 15- to 30-nunute intervals and in the seven observation wells at approximately <br /> 1-hour intervals Copies of field logs are included in Appendix A <br /> The pumping test consisted of extracting ground water from extraction well EW-3 utilizing a 4-inch <br /> diameter submersible Grundfos Rech-flo pump Pumping began at six gallons per minute (gpm), <br /> after 135 minutes, the pumping rate was increased to eight gprn. The pumping rate was increased to <br /> ten gpm after approximately 245 minutes of pumping Approximately 4,000 gallons of water were <br /> 10 extracted from EW-3 during the eight-hour test <br />' 3 1 1 Pump Test Results <br /> During the variable rate pumping test (6 to 10 gpm), the maximum ground water drawn-down in <br /> extraction well EW-3 was observed to be 8 42 feet after 410 minutes of pumping operation <br /> (Table 2) Maximum draw-down was observed In the observation wells as follows <br /> • EW-4(located 10 feet toward the north) at 0 77 feet after 350 minutes of pumping operation, <br /> MW-3 (Iocated 12 feet toward the northeast) at 0 48 feet after 410 minutes of pumping <br /> operation, <br /> • VW-2 (located 24 feet toward the northwest) at 0 28 feet after 410 minutes of pumping <br /> I operation, <br /> MW-7 (located 48 feet toward the west)at 0 18 feet after 3 50 minutes of pumping operation, <br /> • VW-4 (located 48 feet toward the southwest) at 0 18 feet after 350 minutes of pumping <br /> operation, <br /> • VW-1 (located 54 feet toward the west) at 0 17 feet after 3 50 minutes of pumping operation, <br /> and <br /> Advanced GeoEnvtronment4 Inc <br />