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TABLE 5 <br /> LABORATORY RESULTS OF VAPOR SAMPLES FROM INDIVIDUAL WELLS <br /> THRIFTY OIL STATION# 172, STOCKTON, CA <br /> LL/ ANALYTICAL PARAMETERS <br /> SAMPII✓ DATE TPH 11 T E X MTBE COMMENTS <br /> I my 1213MVI (PPMy my ttty my <br /> 06/20/02 1,120 13 65 63 27 185 <br /> 07/18/02 1,060 15 22 26 12 85 <br /> 08/15/02 712 12 21 32 68 69 <br /> 09/12/02 483 66 14 1 52 128 <br /> 10/17/02 2,640 23 36 37 12 173 <br /> 11/14/02 1,090 16 23 2 39 482 <br /> 12/12/02 9,440 172 461 5 113 2,920 <br /> 01/09/03 556 12 26 1 1 16 97 <br /> 02/11/03 707 1 1 36 10 101 083 <br /> 03/13/03 2,020 24 39 76 38 56 <br /> 04/10/03 869 17 48 39 16 44 <br /> 05/27/03 2,370 18 128 18 72 31 <br /> 06/12/03 590 22 60 72 42 1 3 <br /> 07/10/03 445 1 5 28 79 52 24 _ <br /> 08/14/03 516 77 _ 52 68 37 79 <br /> 09/11/03 633 038 25 063 27 02 <br /> 10/16/03 637 50 30 36 24 30 <br /> 11/20/03 #N/A #N/A #N/A #NIA #N/A. #NIA Insufficient sample _ <br /> 11/25/03 403 1 1 20 5 7 34 <10 <br /> _12116/03 434 1 8 40 78 41 029 _ <br /> 01/20/04 230 � 034 _ 102 —032 _ 09 --- <0 25 <br /> 02/12/04 9,400 115 174 39 164 228 <br /> 03/16/04 440 56 17 30 14 11 _ <br /> 04/20/04 293 0 128 125 0 378 1 31 ,3 66 <0 001 BTEX&MTBE by Method TO-15 Xylenes reported as <br /> m p-&o_Xylenes <br /> 05/04/04 544 73 50 68 28 18 <br /> 06/08/04 1,680 " <0 25 29 <0 25 <0 75 <2 5 *Lab report indicates does not resemble gasoline pattern <br /> 07/07/04 1,990 3 5 92 3 5 40 <5 0 <br /> 08/26/04 456 3 1 96 075 33 70 <br /> 03/08/05 <5 <0 01 006 <0 01 0 14 <0 1 <br /> 06/08/05 18,400 170 420 68 261 525 <br /> 09/27/05 134 093 20 3 5 12 059 <br /> 12/13/05 109 167 15 3 1 14 0 44 <br /> NOTE Benzene,toluene,ethlybenzene,and xylene analyzed by EPA method 8021 B <br /> Total petroleum hydrocarbons(TPH)analyzed by EPA method 8015M <br /> Methyl-tert Butyl Ether(MTBE)analyzed by EPA method 8021E <br /> 0 <br /> 1727AH5 YLS wc11% Page 7 of 7 1113/2006 <br />