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15 May 2001 <br /> AGE-NC Project No 97-0333 <br /> ' Page 3 of 7 <br /> ' drums and was stored at the site in an area lacking public access Field logs for well development <br /> activities are included in Appendix B <br /> 3.0. GROUND WATER AQUIFER PUMPING TEST <br /> ' On 05 April 2001, a ground water aquifer pumping testing was performed at the site to assess the <br /> general ground water aquifer characteristics and to assess aquifer response to ground water extraction <br /> utilizing wells EW-1, MW-1, MW-2,MW-3 and MW-6 at a constant pumping rate, purged ground <br /> ' water was containerized in an on-site 6,500-gallon poly tank(Baker tank) <br /> 3 1 FIRST WATER ZONE AQUIFER PUMPING TEST, 05 APRIL 2001 <br /> I <br /> i <br /> Ground water pump testing consisted of extracting First Water Zone ground water from well EW-1 <br /> at a rate of 6 gallons per minute (GPM), First Water Zone was informally identified in Cone <br /> Penetrometer 7Testing Site Investtgattn -Fourth Quarter 2000, dated 07 February 2001 as a potential <br /> hydrogeologic unit between 15 and 47 feet bsg <br /> The pumping test consisted of extracting ground water from well EW-1 at a rate of 6 GPM utilizing <br /> a 4-inch diameter submersible Grundfos Redi-flo pump The pumping test was terminated after 7 <br /> hours because the electrical power cord to the Grundfos pump control box was accidentally <br /> disconnected at the electrical outlet, due to the apparent stability of ground water drawdown at wells <br /> ' EW-1, MW-1, MW-2, MW-3 and MW-6, AGE determined that the data collected from thet7-hour <br /> pumping test was adequate to evaluate general ground water aquifer characteristics at the site <br /> 1 The pump test utilized 7/s-inch diameter, model 3001 Solinst Levelogger pressure transducers that <br /> were deployed in wells MW-1, MW-2, MW-6 and EW-1 Each pressure transducer was <br /> preprogrammed prior to the pumping test to log water levels at one-minute intervals Copies of <br /> pressure transducerwater level data logged from MW-1,MW-2, MW-6 and EW-1 are in Appendices <br /> C, D, E and F, respectively Semi-loganthmic plots of draw-down versus time for MWA, MW-2, <br /> MW-6 and EW 1 are in Appendix G <br /> ' During the constant rate pumping test (6 0 GPM), the maxiumum ground water drawn-down in <br /> extraction well EW-1 was observed to be 2 27 feet after 193 minutes of pumping operation <br /> ' (Appendix C) maximum draw-down was observed in wells MW-6 (located 8 feet towards the <br /> north) at 0 53 feet after 280 minutes of pumping operation(Appendix D), draw-down was observed <br /> in well MW-2 (located 1S feet towards the north) at 0 40 feet after 325 minutes (Appendix E), draw- <br /> down and was observed in wells MW-1 (located 49 feet towards the south) and MW-3 (located 46 <br /> 4dvanced GeoEn�ironlnt nW Int <br /> 1 <br />