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I <br /> I <br /> Table 1 (Continued) - <br /> Groundwater Monitoring Data <br /> ARCO Service Station 2168 <br /> 441 Charter Way, Stockton, California <br /> Page 4 of 4 <br /> Well Elevation Static <br /> Sample of Top of Water Eleietion of Ethyl- Total <br /> Number Date Casing Level Groundwater TPHG Benzene Toluene benzene Xylenes Observations <br /> MW-7 <br /> MW-7 I0/28/93 888 38 11 -2923 42,000 31,000 9,300 970 6,000 No FP, No S, Yes 0 <br /> MW-7 03/23/94 888 3663 -2775 44,000 3,000 8,600 870 5,600 No FP <br /> MW-7 06/29/94 888 3739 2851 24,000 850 4,500 630 4,400 No FP, S=NE, O=NE <br /> I <br /> Analytical results to parts per billion(ppb) <br /> TFHG=Total petroleum hydrocarbons as gasoline <br /> Measurements in feet <br /> Elevation datum is mean sea level <br /> S=Sheen <br /> 0=Ob%ious product odor <br /> F1'= Free product <br /> <=Belo% detection limit for analytical methods used <br /> Sample designations <br /> NS= Not sampled <br /> NE= Not evaluated <br /> M%V 4(34) Well ID and sample depth(feet) <br /> W 24 MW3R Water sample,sample depth(feet) R =nnsaie blank <br /> I <br /> jO\0805v08051110 lel-94 pas 4 <br /> mwv� l• l• 1♦ <br />