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s • • <br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date feet feet feet (feet)_ Benzene Toluene benzene Xylenes TPH-g MTBE <br /> IP 1 B 09/27/04 -- 2150 -- -- -- -- -- -- -- -- <br /> IP1B 09/28/04 -- -- -- -- 5,470 18,800 2,280 11,200 87,200 h <0 5* <br /> IPIB 12/03/04 -- 2050 -- -- 7,760 25,000 2,930 14,500 154,000 h 100 <br /> IP1B 12/03/04 <50* <br /> IP2A 09/27/04 -- -- -- -- -- -- -- -- -- -- <br /> IP2A 09/28/04 -- -- -- -- 570 13,300 2,490 11,600 67,800 h <0 5* <br /> IP2A 12/03/04 -- -- -- -- 850 4,470 1,720 8,220 46,300 h 25 0 <br /> IP2A 12/03/04 <25* <br /> IP2B 09/27/04 -- 2170 -- -- -- -- -- -- -- -- <br /> IP213 09/28/04 -- -- -- 460 17,600 3,270 15,200 94,100 h <0 5* <br /> IP213 12/03/04 -- 2090 -- -- 595 18,700 4,580 19,700 162,000 h 370 <br /> IP2B 12/03/04 <50* <br /> IP3A 09/27/04 -- -- -- -- -- -- -- -- -- -- <br /> IP3A 09/28/04 -- -- -- -- -- -- -- -- -- -- <br /> IP3A 12/03/04 -- -- -- -- 266 1,300 588 2,830 17,800 h 160 <br /> IP3A 12/03/04 <10* <br /> IP313 09/27/04 -- 2155 -- -- -- -- -- -- -- -- <br /> IP3B 09/28/04 -- -- -- -- 3,760 17,200 1,520 7,910 68,700 h <0 5* <br /> IP3B 12/03/04 -- 21 10 -- -- 2,930 19,500 2,720 13,500 123,000 h 900 <br /> IP3B 12/03/04 <50* <br /> a Water in well may be residual water in end cap <br /> b Unidentified hydrocarbons present <br /> c Hydrocarbons ranging from C6-C12 identified on the gasoline sample chromatogram <br /> d Analytical results maybe incorrect due to possible mislabeling of samples for UVB-MW 1 and UVB-MW2 Resampled on 2 October 1997 <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 /> g Iprglects1739421master\wplq I204U942gw xis Page 55 of 56 <br /> I <br />