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TAB 1 <br /> GROUNDWATER DATA <br /> THRIFFY OIL STATION#171, STOCKTON, CA <br /> DATE ANALYTICAL PARAMETERS DEPM TO DEPTIf TO fjkQI)V(,T CASING GROUNDWATFAt <br /> SAMPLED TPR.g $EIlZE E TOLUENEk t hylBenzene yI,RNE MTBR �(,It}T t t) r1TER-- P101)U w RC� ELE3rA RYA!II N <br /> (u�) (u�) OWL) ( ) tugs) (1.191) tit) (het) ((eet)- (fit) {feet) <br /> MONITORING VWLL M-11 <br /> 02/25/99 <50 <03 <03 <03 <05 <20 3805 NP 000 <br /> 05/14/99 - - - DRY <br /> 08/18/99 I - - - - - DRY <br /> M()11 MIUNG WELL#T&.12 <br /> 02/25/99 4,400 49 0 81 <03 29 12,000 3970 NP 000 <br /> 05/14/99 - - DRY <br /> 08/18/99 - - - - - DRY <br /> NOTE ND=Nondetectable Benzene,toluene,ethlybenzene and xylene analyzed by EPA method 8020 <br /> NP=No free hydrocarbon product Total petroleum hydrocarbons(TPH)analyzed by EPA method 8015 modified for gasoline <br /> =Not analyzed/Not available Methyl-tert Butyl Ether(MTBE)analyzed by EPA method 8020 or 8260 <br /> MTBE by 8020 Beginning 8/23/00 BTEX and MTBE analyzed by EPA Method 8260B <br /> I <br /> 171 TAB 1 XL S Page 9 of 9 9/5/01 <br /> I <br />