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I <br /> A Teichert&San Inc <br /> July 84 QiNR <br /> well MW-13 for sample collection as the water level has risen above the screened <br /> interval in MW-13 Water level data from well MW-13 is utilized in gradient <br /> determination Historical results of groundwater sampling from the four wells MW- <br /> 10, MW-11 , MW-12 and MW-13 indicated that detectable concentrations of <br /> petroleum hydrocarbons have occurred in wells MW-10 and MW-11 and MW-13 <br /> Historical water level measurements from the five wells indicates that groundwater <br /> flow is to the northeast, east or southeast Results of previous measurements and <br /> sampling are summarized in Tables 1 and 2 <br /> 6 2 0 (RESULTS <br /> 21 Groundwater Level Measurements <br /> Measurements on July 5, 1994 from five wells indicate that groundwater occurs <br /> approximately 67 - 68 feet below ground surface Based on the current information, <br /> the hydraulic gradient is approximately 0 0015 ft/ft, and trends north - northeast <br /> Field measurement forms are included in Appendix B <br /> 22 Groundwater Sample Laboratory Analytical (Results <br /> Four groundwater samples collected from the wells were analyzed for TPH as gasoline <br /> and BTEX by EPA Method 8020/8015 modified The analysis indicates <br /> concentrations of TPH and BTEX below minimum laboratory detection limits in <br /> samples from wells MW-10, MW-1 land MW-12 Elevated concentrations of TPH <br /> gasoline and BTEX were indictaed from the water sample collected from well MW-14 <br /> Groundwater sample laboratory analytical results summarized in Table 2 are illustrated <br /> in Figure 3 Laboratory analytical results reports are included in Appendix C <br /> r <br />•� <br /> 2 <br /> r� <br />