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I Fl�c�l �fi(19 i0 Plac, lan 11 oil tiuniil lieIM(11,11111511nlib Ic,l hepolI Fcbnua _' 200 The MW-3C pump test lasted approximately 6 5 hours A total of approximately 485 gallons were ' purged from MW-3C during the 6 5 hour period equating to a pumping rate of approximately 124 gallons per minute or 75 gallons per hour Technical data on aquifer conditions could not be denved ' from this pump test due to equipment malfunction During this test, the Solmst data loggers did not operate correctly and, as a result, the transmissivity and hydraulic conductivity values related to well MW-3C could not be calculated However, given the amount of data derived from the MW-6C pump test, further aquifer testing is not necessary 1 4 3 3 Groundwater Sampling and Laboratory Analysis ' During each pump test, samples were collected from the purged groundwater Two samples were collected from each extraction well During the MW-6C pump test, one sample was collected from ' approximately midway through the test and the other sample was collected near the end of the test During the MW-3C pump test, one sample was collected at the start of pumping and one sample was ' collected near the end of the test Each groundwater sample was collected directly from the pump discharge hose and was contamerized in laboratory supplied sample containers After collection, each ' groundwater sample was placed on ice in a cooler for eventual transport to Del Mar Analytical in Phoenix, Arizona for analysis Groundwater samples were analyzed for volatile fuel hydrocarbons ' according to EPA method 8015B and for BTEX according to EPA method 8021 B ' Laboratory analytical results of the purged groundwater indicated a significant decrease in volatile fuel hydrocarbons in MW-6C from approximately 1,400 ugll midway through the test to 270 ug/1 near the end of the test BTEX concentrations did not vary significantly between the MW-6C sample intervals Laboratory analytical results of the purged groundwater from the MW-3C pump test did not vary significantly between the starting sample and the ending sample However, it should be noted that the ' overall analytical results of samples collected from well MW-3C during the pump test varied considerably in comparison to the samples collected from MW-3C during the AS testing event, which ' was conducted three days prior (on November 18, 2002) Groundwater samples collected during the AS test contained concentrations of 260 ug/1 VFH and 10 ug/l benzene (Table 5), but were non-detect during i1the pump test Laboratory analytical results of the groundwater samples collected during the pump test ' 16