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TABLE 5 <br />' LABORATORY RESULTS OF VAPOR SAMPLES FROM INDIVIDUAL WELLS <br /> THRIFTY OIL STATION#172, STOCKTON, CA <br /> WELL]]�j <br /> ANALYTICAL PARAMETERS <br /> SAMPL 'IPH B T E X MTBE COMMENTS <br /> I my my my my my mv' <br /> 12/19/01 < 5 <001 004 <0 01 01 <0 I <br /> 01/24/02 - 139 0 05 1 0 41 4 <0 1 _ <br />' 02r07J02_ _ s <001 <001 —— 002 —- —a z ——- <D 1o3/14/02 23 <0 01 04 02 1 7 0 1 1 <br /> 03/29/02 508 2 15 27 _20 _ 2 <br /> 04/18/02 < 5 <001 003 <001r <br /> c0 1 <br />' OS13D102 < 5 - <0 01 _ 005 - 006 <Ol -06/20/02 1120 13 65 63 18507119!_02 1,060 1 S 22 26 85 08115/02 712 12--- 21 3 2 69 09/12/02 483 6 6 14 - 1 - _ 128 _ —�_— ��-- <br /> 10/171p2� 2 640 23 36 37 12 ` 173 _ <br /> l 1!1_4102 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 l 16 97 <br /> 02/11/03 707 1 1� 36 10 101 0 83 <br /> 03/13/03 2020 24 39 76 38 56 <br /> 04/10/03 669 17 48 39 16 - <br /> 05/27/03 2,370 18 128 18 72 31 <br /> _06/12/03 590 22 60 72 42 1 3 <br /> _07/10103 445 -- -1 5 28 79 52--.- 24 — <br />' 08/14/03 516 77 52 —68 37 _ 79 <br /> 09/11/03 633 0 39 — 25 - 0 63 _ 2 7 _ 02 <br /> 1_0/16/03 637 5 0 30 36 24 30 <br /> 1412_0/43 #NIA #N!A #N1A #NIA #NIA #NJA Insufficient sample <br /> 11/25103 403 l 1 _ 20 57 34 <br /> 12/16/03 434 1 8 40 78 41 029 <br /> 01/20/04 230 0 34 102 0 32 0 9 <D--- <br /> --02/12/04 9 400 1 15- 174 -- 39 -- 164 228- - _ -- <br /> 03/16/04 440 56 17 30--- 14 11 <br /> <0 001 BTEX&MTBE by Method TO 15 Xylenes reported as <br /> 04120104 293 0128 125 0378 1 31 366 mp &o xylenes <br /> 05/0_4104 _544 73 T 50 68 28 18-- <br /> 06109/04 <br /> 806/08/04 1 681,E <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 /> !VOTE Benzene toluene ethlybenzene,and xylene analyzed by EPA method 8021B <br />' Total petroleum hydrocarbons(TPH)analyzed by EPA method 8015M <br /> Methyl-tert Butyl Ether(MTBE)analyzed by EPA method 8021 B <br /> ' 4/7/p4 <br /> 1727AB5 VES we!!s Page 5 of 5 <br />