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Table 2 <br /> Groundwater Monitoring Data <br /> Beacon Station Na 419 <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 5/29/96 <50 <50 <50 <50 <50 <5 0 5264 2000 -3264 <br /> MW-5 5/29/96 70 <50 <50 <50 <50 <5 0 53 13 2043 -3270 <br /> I <br /> MW-6 5/29/96 88* <50 <50 <50 <50 <5 0 5253 2066 31 87 <br /> Notes All analytical results reported in parts per billion(ppb) <br /> GW = Groundwater,TOC = Top of Casing Elev = Elevation to 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 />