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• * r <br /> TAR1 <br /> GROUNDWATER DATA <br /> THRIFTY OIL STATION#171, STOCKTON, CA <br /> DATE ANALYTICAL PARAMETERS DEPTH TO DEPTH TO PRODUCT C'.c1SING GRCOUNPWATER <br /> SAMPLED TPH g BENZENE '. OLCIENE EthylfBeircene XYLENE HTBE GROUNDWATER PRODWT TIiICRhi� ELEYA—HON ELEVAT(ON <br /> 4r�gt1) tum} ( gll) (uIl} {ng/l) fug![} (feet) {feet) (feet) (feet) (feet) <br /> i <br /> 02/11/98 <50 <03 <03 <0 3 <05 40 4790 NP 000 93 16 4526 <br /> 05/28/98 <50 <03 <03 <03 <05 50 5040 NP 000 93 16 4276 <br /> 08/12/98 <50 <03 <03 <0 3 <05 60 41 25 NP 000 93 16 5191 <br /> 11/10/98 <50 <0 3 <03 <03 <05 58 5045 NP 000 93 16 4271 <br /> 02/25/99 <50 <03 <03 <03 <05 76 3801 NP 000 1463 2338 <br /> 05/14/99 <50 <0 3 <03 <03 <05 22 4200 NP 000 1463 -2737 <br /> 08/18/99 <50 <0 3 <03 <03 <05 <20 38 18 NP 000 1463 2355 <br /> 11/16/99 250 0 31 <03 <03 <05 500 4054 NP 000 14 63 2591 <br /> 02/09/00 240 <03 <03 <0 3 <05 480 4202 NP 000 1463 -2739 <br /> 05/17/00 <50 <0 25 <0 25 <0 25 <05 492 4506 NP 000 1463 3043 <br /> 08/23/00 90 92 <02 <02 <04 563 3957 NP 000 1463 2494 <br /> 11/15/00 <50 <03 <02 <02 <04 31 4350 NP 000 1463 -2887 <br /> MONrrOR1NG WELL M-11 <br /> 02/25/99 <50 <03 <03 <0 3 <05 <20 3805 NP 000 - - <br /> 05/14/99 - DRY <br /> 08/18/99 - DRY <br /> MONITORING WEU M-12 <br /> 02/25/99 4 400 49 081 <0 3 29 12 000 3970 NP 000 <br /> 05/14/99 - DRY <br /> 08/18/99 DRY <br /> NOTE ND=Nondetectabte Benzene toluene,ethlybenzene and xylene analyzed by EPA method 8020 <br /> NP=No tree 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 8123100 BTEX and MTBE analyzed by EPA Method 8260B <br /> 171TAB 1 XLS Page 8of8 114101 <br />