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' 09 October 2001 AGE-NC Project No 95-0144 Page 2 of 5 ' A Solinst water level meter was used to measure the depth to ground water in wells EW 1, EW-2, MW-19A, MW-19B, MW-20A, MW-20B, May-21A and MW-21 B Depth to water was measured in extraction well EW-1 at 15-minute intervals and at 1-hour intervals in the seven observation wells ' 22 PUMP TEST RESULTS During the constant rate pumping test (6 0 gpm), the maximum ground water drawn-down in ' extraction well EW-1 was observed to be 6 90 feet after 390 minutes of pumping operation (Appendix B), maximum draw-down was observed in wells MW-2 IA(located 14 feet towards the northeast) at 0 48 feet after 390 minutes of pumping operation (Appendix B), draw-down was observed in well MW-19A (located 30 feet towards the north) at 0 18 feet after 390 minutes ' (Appendix B), draw-down and was observed in well EW-2 located 45 feet 0 09 feet ager 390 minutes and MW-20A(located 60 feet towards the north) at 0 077 feet after h390 minutes of pumping operation(Appendix B) The maximum ground water draw-down in wells MW-2 IA, MW-19A, EW-2 and MW-20A versus ' • the distance of each well from the extraction point were graphed on semi-logarithmic paper (Appendix C), utilizing the Distance-Drawdown Method (Jacob straight--line method), general transmissivtty,storativity and hydraulic conductivity values were determined(Appendix D) Ground ' water levels in observation wells MW-21A, MW-19A, EW-2 and MW-20A all appeared to be influenced and had measurable draw-down during the pumping test ' Utilizing data collectedSwn�i w,, ell EW-2, MW-19A, MW-20A and W-2 IA, a transnvssivity value was calculated�636 ftz/day�`� storativity value calculated t 0 019 -)hydraulic conductivityvalue of 0 067 cm/s and a radius of influence projected at 65 feet utilizing a sena-loganthrmc plot of draw- down versus distance (Appendices C and D) Results of the aquifer ground water pumping test are summarized in Table 2, a site plan depicting the radius of influence during the 24 May 2001 Ipumping test is depicted in Figure 3 Maximum draw-down in the deeper-screened observation wells MW-19B, MW-20B and MW-21B was observed to be 0 29 feet, 0 28 feet and 0 30 feet, respectively The maximum draw-doyen was observed after 480 minutes of pumping operation in the three deeper-screenedwells Aquifer data collected from the deeper-screened observation wells was not utilized to determine aquifer ' characteristics Copies of field logs with water Ievel data from the eight wells are included in Appendix A Semi- ' Ioganthmic plots of draw-down versus time for EW 1, EW-2 and MW-19A through MW-2 I B are III Appendix B Table 2 summarizes the physical results of the constant pumping rate test ' Advanced GeoEnvironnunt4 ine d