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i • <br /> I <br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration( L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) _....,.._._._ BE�.,.,_.,........_._— Xylenes _H-g M`3 <br /> (feet) {feet} (feet) Benzene Toluene benzene X lenes_ TP_ <br /> e Gas and unidentified hydrocarbons ranging from C6-C8 identified on the gasoline sample chromatogram <br /> f Analyzed outside of hold time <br /> g Grab groundwater sample collected from well <br /> h TPH-g results beginning March 2002 include MTBE <br /> I Water sample taken from SW2 on 17 February 1994 was labeled as AS2 on chain of custody and laboratory results <br /> LPH Liquid-phase hydrocarbons <br /> TPH-g Total Petroleum Hydrocarbons as gasoline <br /> MTBE Methyl terhaTy butyl ether <br /> * Analyzed by EPA Method 8260 <br /> -- Not measured,not sampled,or not analyzed <br /> gg/L Microgiams per liter <br /> Note Groundwater elevations adjusted for LPH,when present,using an average specific gravity of 0 75 for gasoline <br /> Data from 1187 from HLA <br /> I <br /> g1projectsk739421uiasterlwp1gO30413942gw xis Page 52 of 52 <br /> I <br />