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1 — <br /> I <br /> r <br /> 23 April 2002 <br /> AGE NC Project No 98-0521 <br /> Page 4 of 7 ' <br /> was measured in extraction well M - <br /> W 2 and in the seven observation wells at 30-minute Intervals <br /> ,during the first two hours and then at one-hour intervals for the remainder of the test Additionally, <br /> the pump test utiljzed '/s-inch diameter, model 3001 Solmst Levelogger pressure transducers that <br /> were deployed In wells MW-2, MW-1 and OW-1 through OW-4 Each pressure transducer was <br /> preprogrammed prior to the pumping test to log water levels at one-minute intervals <br /> The pumping test consisted of extracting ground water from extraction well MW-2 utilizing a 4-inch <br /> diameter submersible Grundfos Red -flo pump A constant rate of 4 gpm was utilized for the test <br /> Approximately 9,000 gallons of water were removed from MW-2 during the constant rate ground <br /> water extraction test <br /> I <br /> 3 2 1 Pump Test Results I <br /> During the constant rate pumping test, maximum ground water drawn-down in extraction well <br /> MW-2 was observed to be 6 69 feet after 1,845 minutes of pumping operation (Appendix E) The <br /> maximum draw=down value recorded by the water meter in MW-2 was 6 78 feet after approximately <br /> 1,080 minutes Maximum draw-down was measured in the observation wells as follows <br /> o9,W-1 (located 8 feet toward the north) at 4 89 feet after 1,842 minutes of pumping !' <br /> peration <br /> i I • , I , .I <br /> OW-2 (located 37 feet toward the northwest) at 3 97 feet after'1,847 minutes of pumping <br /> t operation, <br /> f I <br /> • MW-1 '(located 65 feet toward the southwest) at 12 7 feet after 2,087 minutes of pum in <br /> '! I <br /> operation, p g <br /> i is �N I i <br /> OW-3 '(located 82 feet toward the west) at 1 81 feet 'after 1,836 minutes of pumping <br /> w <br /> operation,Land r g <br /> ! <br /> ' 4 • I Ir r I <br /> OW-4 (located, 145 feet toward the north) at,0 50 feet'after 2,192 minutes of ' <br /> operation I { ,pumping <br /> If� � - <br /> Graphs of draw=down versus time for,the extraction well MW-2 an' d the five observation wells are <br /> „ includcd in Appendix E Water meter data(Appendix F)collected during the constant rate extraction <br /> testlwas used for comparative purposes A semi-logarithmic plot of draw-down versus distance for <br /> OW-1, MW;4, OW-2,'MW-3, MW-1, OW-3 and`O - <br /> W 4' based on pressure I transducer data is <br /> included in Appendix G Table 3 summarizes maximum draw-dawn results of the'constant pumping <br /> rate test <br /> '{ ty �4 vanced GeoEnvironmental,inc <br /> ' <br /> I, <br /> !'l4 I' EI <br /> f <br /> 4 I I t <br /> ill , <br />