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TA1 M M M = M <br /> GROUNDWATER DATA <br /> THRIFTY OIL STATION 4172, STOCKTON,CA <br /> DATE ANALYTICAL PARAMETERS DEPTH TO DEPTH TO PRODUCT CASING IGROUNDWATER <br /> SAMPLED TPH BENZENE I TOLUENE lhthyltlenzene XYLENE MTBEGROUNDWATER PRODUCT THICKNESS ELEVATION ELEVATION <br /> (ug/1.,) (ug/L) (ngft.,) (1191) (ugfL) (ugfL} (feet) (feet) (feet) (feet) (feet) <br /> 08/11/04 193 000 24 200 30 400 1480 12 200 941 4006 NP 000 1318 -2699 <br /> 09/30/04 229 000 3 l 000 33 900 3 400 18 200 736 4090 NP 000 1318 2772 <br /> 11/10/04 221 000 26 500 28 800 2070 13 000 776 4009 NP 000 k 3 18 2691 <br /> 02/22/05 23 700 814 727 577 2 180 5 110 3640 NP 000 13 18 2322 <br /> NOTE ND=Nondetectable <br /> =Not analyzed/Not available 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 /> * =MTBE by 8020 or 8020/8260 Methyl Cert Butyl Ether(MTBE)analyzed by EPA method 8020 or 8260 <br /> On 8118100 and beginning 2115101 BTEX and MTBE analyzed by EPA Method 9260E <br /> I <br /> i <br /> 172TABI XLS Page 11 of 11 3/16/2005 <br />