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TABLE 3 CONT. <br /> Historical Ground Water Analyses <br /> Date Benzene Toluene Ethyl Total TPH-Gas Dissolved Total <br /> Collected (AWL) (991L) Benzene Xylene (ug/L) Chromium Lead <br /> ' (Rg/W (NP/L) (mom) (MWL) <br /> MW-6 <br /> 8126/94 <5 <5 <5 <5 <50 NA 0 014 <br /> 3116195 <0 3 <0 3 81 17 2,300 <001 <0 05 <br /> ' 6122195 <03 <0 3 33 4 8 760 <001 <0 01 <br /> 9122195 <0 3 <0 3 14 <06 770 NA NA <br /> 12/21/95 <0 3 <0 3 2 0 <0 6 840 NA NA <br /> 03/22/96 08 0 7 2 8 1 3 2 640 NA NA <br /> MW-7 <br /> 03/22!96 <0 3 <03 <03 I <0 6 <50 NA NA <br /> MW-8 <br /> ' 03/22/96 <0 3 04 12 1 2 7 420 NA NA <br /> MW-9 <br /> 03/22/96 <0 3 <03 0 5 1 1 7 50 NA NA <br /> ' NOTES <br /> NA= Sample not analyzed for constituent <br /> ' <= Less than detectable concentration listed <br /> Data for events prior to June 22, 1995 are reported as listed in Remcor <br /> quarterly reports <br /> 5.2 Ground Water Gradient <br /> ' A ground water gradient map was produced from the data obtained from the March 22, <br /> ' 1996 sampling event (Figure 2) The elevations used in the calculation are summarized <br /> in Table 4 The newly Installed monitoring wells, MW-7, MW-8 and MW-9 were not <br /> surveyed prior to this sampling event Therefore these three wells were not used in the <br /> calculation of the ground water gradient The ground water flow direction is toward the <br /> northwest during this sampling event This gradient and flow direction is consistent with <br /> previous monitoring events <br /> t <br /> American Geological Services, Inc <br /> CA95DE-029 <br /> 10 <br /> x <br />