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Table 2 <br /> Groundwater Monitoring Data <br /> Beacon Station No. 474 <br /> Stockton, California <br /> page 1 of 1 <br /> Monitoring Date TPHg Benzene Toluene Ethyl- Total MTBE Depth to Reference Groundwater <br /> Well No. Benzene Xylenes GW TOC Elev. Elevation <br /> ppb ppb ppb ppb ppb ppb feet feet feet <br /> MW-4 5/30/96 <50 1.6 3.1 <0.50 2.4 5.7 67.12 25.15 -41.97 <br /> MW-5 5/30/96 <50 <0.50 0.56 <0.50 <0.50 <5.0 67.12 25.11 -42.01 <br /> Notes: All analytical results reported in parts per billion(ppb) <br /> GW = Groundwater;TOC =Top of Casing;Elev. = Elevation in feet above sea level. <br /> Depths and Elevations recorded in feet. <br /> Wellhead Elevation Surveyed by Ron Archer Civil Engineering Inc. <br /> TPHg = total petroleum hydrocarbons as gasoline <br /> MTBE =Methyl-t-butyl ether <br /> * = Product is not typical gasoline <br /> I <br /> i <br /> I <br /> i <br /> I <br /> I <br /> I <br /> h ' <br />