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i <br /> Teichert SeD 94' MR <br /> a soil vapor extraction recovery well A drop in the water table beneath the site has resulted in six <br /> remaining wells intersecting the water table Well MW-9 is obstructed and conventional well <br /> purging is unfeasible 1-Lstoncal water level measurements from the wells indicates that <br /> groundwater flow is to the northeast, east or southeast Historically, detectable concentrations of <br /> petroleum hydrocarbons have occurred in wells MW-10 and MW-11 and MW-13 Results of <br /> current and previous measurements and sampling are summarized in Tables 1 and 2 <br /> 2.0 RESULTS <br /> 2.1 Groundwater Level Measurements <br /> Measurements on September 19, 1994 from six wells indicates that groundwater occurs <br /> approximately 71 feet below ground surface Based on the current information, the hydraulic <br /> gradient is approximately 0 0006 ft/ft (essentially flat), and trends east-southeast This information <br /> is consistent with previous measurements and gradients <br /> 2.2 Groundwater Sample Laboratory Analytical Results <br /> Five groundwater and one water grab samples collected from the wells were analyzed for TPH as <br /> gasoline and 3TFX by EPA Method 8020/8015 modified The analysis indicates concentrations <br /> of 1 H and 31,:X below minimum laboratory detection limits in samples from wells iIMW-9,10 and <br /> MW-12 Detectable concentrations of'PH gas and benzene were indicated from sample i�l_'W-11, <br /> and elevated concentrations of TPH gasoline and BTEX were indicated from water samples MW-13 <br /> and MW-14 Groundwater sample laboratory analytical results summarized in Table 2 are <br /> illustrated in Figure 3 Laboratory analytical results reports are included in Appendix B <br /> f <br />•� Page 2 <br />