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(.,wpu$Can Lt■y;, <br /> (hIMIrTIN A7)nnannp Report <br /> Daemhrr 17 Mil <br /> Pagr a <br /> Monitor wells MW-1 MW-2, and MW-3 are wmcned ftoni appro\irnately 45 to 65 tcet bgs and monitor wells <br />' MW-4, MW-5 MW-6 and MW-7 are screened from ippromniately 40 to 60 feet bgs Therefore water levels <br /> were substantially above the top of the screen in each morutor well -1 he groundwater elevation ranged from <br />' 20 42 to 18 43 feet below mean sea level (bmsl) at the site See Table 2, below, for grourndwater elevation <br /> data Groundwater elevation contours are shown in Faure 3, Appendix A 'File groundwater elevation <br /> contours indicate a northern groundwater floe towards the general vicinity of MW-2 <br /> TABLE 2 <br /> Ground«atei Elevation Data (October 23, 1997) <br /> MW-1 through MW-7 <br />' Well Well Casing Well Collar Depth to Groundwater <br /> ID Screen Elle-,ation Water Elevation <br /> Internal (feet) (feet) (feet) <br /> (feet- bgs) <br /> MINI-1 45 - 65 1097 2972 -18 75 <br />' MW-2 45 - 65 10 37 30 79 -2042 <br /> MW-3 45 - 65 11 76 31 42 -1966 <br /> MVA'-4 40 - 60 10 85 2928 -18 43 <br /> MW-5 40 - 60 11 25 31 38 -20 13 <br /> MNV-6 40 - 60 11 72 31 32 -1960 <br /> MVA'-7 40 - 60 1 l 05 10 17 -19 12 <br /> I5 DISCUSSION OF RESULTS <br /> Since September, 1994 the depth to groundwater at the site has decreased from appro%innately 45 to 29 bgs <br /> The groundwater elevation contour map (Figure 3 Appendix A) indicates that groundwater flows in a northern <br /> direction toward the general vicinity of MW-2 This is generally consistent with previous monitoring results <br /> A hydrograph of monitor wells MW-1 through MW-7 (Figure 4, Appendi\ A) illustrates the fluctuation of the <br /> groundwater table Historical groundwater measurements are provided in the accompanying Hydrograph Tdbic <br /> (Appendix A) <br /> Analytical results for the October 1997 sampling are generally consistent with historical analytical results <br /> TPH-G and BTEX concentrations in the sample collected from MW-5 have increased markedly since August of <br /> 1995 MW-5 is generally down-gradient from the former location of the underground storage tanks. The <br /> historical groundwater analytical data for the srtc are presented in Table A Appendi• B <br /> w <br /> �1�► CONDOR <br />