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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration ( /L) <br /> i <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) _ (feet) (feet) Benzene Toluene benzene - Xylenes TPH-g _ MTBE <br /> TPH-g Total Petroleum Hydrocarbons as gasoline <br /> MTBE Methyl t-butyl ether <br /> * Analyzed by EPA Method 8260 <br /> - Not measured,not sampled,or not analyzed <br /> µg/L Micrograms per Mer <br /> Note Groundwater elevations adjusted for LPH, when present,using an average specific gravity of 0 75 for gasoline <br /> Data from 1/87 from HLA <br /> Water sample taken from SW2 on 17 February 1994 was labeled as AS2 on chain of custody and laboratory results <br /> g 1pro3ects\739421znasterlwp\gO6o2\3942bnv x1s Page 43 of 43 <br />