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31 January 2002 AGE-NC Project No 95-0128 Page 4 of 8 The pump test consisted of extracting ground water from well EW-1 at a rate of 5 GPM utilizing a 4-inch diameter submersible Grundfos Redi-flo pump The pumping rate was determined by measuring the time required to fill a 5-gallon bucket-from.the pump discharge hose ' Thep pum test utilized 7/s-inch diameter, model 3001 Solinst Levelogger pressure transducers that were deployed in wells VW-3,VW-4 and VW-1 Each pi essure ti ansducei was preprograrnmed prior ' to the pumping test to log water levels at one-minute intervals However, no data was recorded from within vapoi well VW-1, due to an unanticipated and excessive drawdown of the water level in vapor well VW-1 Copies of pressure transducer water level data logged are in Appendices C ' The depth to ground water was also manually measured with a Solinst water meter in exti action well EW-1 and observation wells EW-2, MW-3, MW-4, MW-5, and MW-6 and vapor well VW-1 to ' VW-4 (Appendix D) Semi-logarithmic plots of draw-down versus time for observation wells are in Appendix E ' After 720 minutes of constant I ate pumping (5 GPM), the maximum ground water dr awn-down in f extraction well EW-1 was observed to be 8 4 feet Maximum draw-down in well VW-I (located equi- • gradient 5 feet toward the west) was 1 2 feet Draw-down in well EW-2 (located approximately down-gradient 15 feet toward the east) was 0 65 feet, draw-down in well VW-2 (located equi- giadient 22 feet towards the northeast) was 0 89 feet, draw-down In well VW-3 (located down- gradient 25 feet towards the east)was 0 8 feet,draw-down in well VW-4(located up-gradient 30 feet towards the west) was 0 5 feet, drawdown was observed in well MW-3 (located equi-gradient appy oximately 25 feet towards the northwest) at 0 41 feet, di aw-down in well MW-5(located down- gradient 60 feet towards the east) was 0 23 feet and was observed in well .'LViW-4 (located down- gradient approximately 70 feet towards the northeast) at 0 23 feet (Appendix D) Results of the aquifer ground water exti action test are summarized in Table 1 1 An Inflection of the trend of the drawdown vs time plots at approximately 250 minutes suggests initiation of tui bulent flow into the extraction well with loss of well efficiency Steady state conditions ' may not have been achieved at the pumping i ate The maximum ground water di aw-down in observation wells versus the distance of each well from the extraction point was graphed on semi-logarithmic paper, utilizing the Distance-Drawdown Method, genes al values for the tiansmissivity, storati-v7ty and hydraulic conductivity of the aquifer, R were determined (Appendix F) Utilizing the data collected and plotted, atransrmssivity value of 380 ft'/day or 2,840 gallon/day/feet, a storativity value of 0 043, a hydi aulic conductivity value of 94 feet/day or 0 033 cm/s was calculated A calculation of the plume capture zone is included in Appendix G 4di anced GCOE11V ironmental Inc