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CAMBRIA
<br /> Table 1 Mass Removal Data,Shell-branded Service Station,3725 Tracy Boulevard,Tracy,California
<br /> Cumulative Cumulative Cumulative Cumulative
<br /> Volume Volume TPHg TPHg TPHg Benzene Benzene Benzene MTBE MTBE MTBE
<br /> Date Well Pumped Pumped Sample Concentration Removed Removed Concentration Removed Removed Concentration Removed Removed
<br /> Purged ID ( al) (gal) Date (ppb) (pounds) (pounds) b (pounds) (pounds) (ppb) (pounds) (pounds)
<br /> 07 Feb-00 MW-IA 1000 1,000 12/07/99 <500 <0 002 <0 002 <5 00 <0 000 <0 000 46 900 0 391 0 391
<br /> 07 Mar-00 MW IA 1 000 2,000 02/18/00 10,000 0 083 <0 086 <100 <0 000 <0 000 47 500 0 396 0 788
<br /> 07-Apr-00 MW I 500 2,500 02/18/00 10,000 0 042 <0 127 <100 <0 000 <0 001 47 500 0 198 099
<br /> 09-May 00 MW IA 1,000 3 500 05/01/00 2,740 0 023 <0 150 <2 5 <0 000 <0 001 26,300 0 219 121
<br /> 09 Jun 00 MW IA 1 000 4 500 05/01/00 2,740 0 023 <0 173 <2 5 <0 000 <0 001 26 300 0 219 142
<br /> 11 Jul 00 MW IA 4 000 8,500 05/01/00 2,740 0 091 <0 264 4 5 <0 000 <0 001 26,300 0 878 230
<br /> 08 Aug 00 MW]A 1,000 9 500 08/03/00 <2 500 <0 010 <0 275 <1 110 <0 000 <0 001 54,700 0 456 2 76
<br /> 08-Sep 00 MW IA 1 000 10,500 08/03/00 <2 500 <0 010 <0 285 <111 0 <0 000 <0 002 54 700 0 456 322
<br /> Ol-Nov 00 MW-IA 303 10,803 10/30/00 217 0 001 <0 286 3 56 <0 000 <0 002 69,300 0 175 339
<br /> 12 Dee 00 Z MW]A 2000 12,803 10/30/00 217 0 004 <0 289 3 56 <0 000 <0 002 69 300 1 157 4 55
<br /> 23-Jan Ol MW IA 2000 14,803 01123/01 <2,000 <0 017 <0 306 <20 <0 000 <0 002 21 000 0 350 490
<br /> 15 Feb-OI MW-IA 2 000 16,803 01/23/01 <2,000 <0 017 <0 323 <20 <0 000 <0 002 21 000 0 350 525
<br /> 23-Mar 01 MW-IA 2000 18,803 01/23101 <2,000 <0 017 <0 340 40 <0 000 <0 002 21,000 0 350 560
<br /> 26-Apr 01 MW 1 A 2,000 20,903 01/23/01 <2,000 <0 017 <0 356 40 <0 000 <0 002 21,000 0 350 5 95
<br /> 23 May-Ol 3 MW IA 2,000 22 803 010101 4,000 <0017 <0 373 QO <0 000 <0 003 21,000 0 350 630
<br /> 09-Jun 01 MW 1A 2,000 24 803 06/05/01 <2 000 <0 017 <0 390 40 <0 000 <0 003 7,800 0 130 643
<br /> 22 Jun 01 MW]A 500 25,303 06/05/01 4,000 <0 004 <0 394 40 <0 000 <0 003 7,800 0 033 646
<br /> 05 Jul 01 MW IA 2,500 27 803 06/05/01 <2 000 <0 021 <0 415 <20 <0 000 <0 003 7 800 0 163 6 62
<br /> 23-Jul-01 MW-IA 1,800 29,603 06/05/01 <2,000 <0 015 <0 430 <20 <0 000 <0 003 7,800 0117 674
<br /> 09-Aug-01 MW-IA 2,300 31,903 07/27/01 <5,000 <0 048 <0 478 <25 <0 000 <0 003 19,000 0365 711
<br /> 25-Aug-01 MW-IA 2,400 34,303 07/27/01 05,000 <0 050 <0 528 X25 <0 000 <0 004 19,000 0.381 749
<br /> 08-Selr-01 MW-IA 3,600 37,903 07/27/01 <5,000 <0 075 <0 603 <25 <0 000 a0 004 19,000 0 571 806
<br /> 28-Sep-01 MW-1A 2,800 40,703 07/27/01 <5,000 <0 058 <0 661 <25 <0 000 <0 004 19,000 0 444 880
<br /> 07 Feb 00 MW 2A 1 000 1,000 12/07/99 <100 <0 000 <0 000 <1 <0 000 <0 000 2 640 0 022 0 022
<br /> 07-Mar 00 MW 2A 1 000 2,000 02/18/00 <100 <0 000 <0 001 <1 <0 000 <0 000 248 0 002 0 024
<br /> 07 Apr 00 MW 2A 500 2,500 02/18/00 <100 <0 000 <0 001 <1 <0 000 <0 000 248 0 001 0 025
<br /> 09 May-00 MW 2A 1,000 3 500 05/01/00 <50 <0 000 <0 001 <0 5 <0 000 <0 000 265 0 002 0 027
<br /> 09 Jun-00 MW 2A 1 000 4,500 05/01/00 <50 <0 000 <0 001 <0 5 <0 000 <0 000 265 0 002 0 030
<br /> 11-Jul-00 MW 2A 1,000 5 500 05/01/00 <50 <0 000 <0 002 <0 5 <0 000 <0 000 265 0 002 0 032
<br /> 08 Aug 00 MW 2A 1,000 6,500 08/03/00 <50 <0 000 <0 002 <0 5 <0 000 <0 O00 52 6 0 000 0 032
<br /> 08 Sep 00 MW-2A 1,000 7,500 08/03/00 <50 <0 000 <0 002 <0 5 <0 000 <0 000 526 0 000 0 033
<br /> 07 Mar-00 BF 1 3,000 9 500 02/18/00 <50,000 <0 63 <0 63 <500 <0 006 <0 006 148,000 3 705 370
<br /> 07 Apr 00 BF-I 2,000 11,500 02/1 WOO <50,000 <0 42 <I 04 <500 <0 004 <0 010 148,000 2 470 6 17
<br /> 09-May-00 BF-1 2000 13,500 05/01/00 1,850 0 031 <1 07 240 <0 004 <0014 106,000 1 769 794
<br /> 09-Jun-00 BF-1 2 500 16,000 05/01/00 1,850 0 039 <1 11 240 <0 005 <0019 106,000 2 211 102
<br /> 11 Jul 00 BF-1 0 16,000 05/01/00 1,850 0 000 <I 11 240 <0 000 <0 019 106 000 0 000 102
<br /> 08 Aug 00 BF 1 1,783 17,783 08103/00 <5 000 <0 037 <1 15 160 <0 002 <0 022 118 000 1 756 119
<br /> 08 Sep-00 BF-1 1,350 19 133 08/03/00 <5 000 <0 028 <1 18 160 <0 002 <0 024 118,000 1 329 13 2
<br /> 12 Dec-00 Z BF-1 2 480 21,613 10130/00 18 300 0 379 <1 56 260 <0 005 <0 029 64 700 1 339 146
<br /> 23-Jan Ol BF 1 2,460 24 073 O W3/01 40,000 <0 205 <1 76 390 <0 008 <0 037 110000 2 258 168
<br /> 0813 Pagel of 2
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