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<br /> CAMBRIA
<br /> Table 1 Mass Removal Data,Shell-branded Service Station,3725 Tracy Boulevard,Tracy,California
<br /> Cumulative Cumulative Cumulative Cumulative
<br /> Volume Volume T Hg 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 (gal) (gal) Date (Ppb) (pounds) (pounds) (ppb} (pounds) (pounds) (ppb) (Pounds) (pounds)
<br /> 07-Feb-00 MW lA 1,000 1,000 12107/99 <500 0 002 0 002 <5 00 0 000 0 000 46900 0 391 0 391
<br /> 07-Mar 00 MW-lA 1 000 2000 02118!00 10 000 0 083 0 086 <100 0 000 0 000 47 500 0 396 0 788
<br /> 07-Apr-00 MW-IA 500 2,500 02/18/00 101000 0 042 0127 <100 0 000 0 001 47500 0 198 099
<br /> 09-May-00 MW-lA 1000 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-lA 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-lA 4,000 8 500 05/01/00 2,740 0 091 0 264 <2 5 0 000 0 001 26,300 0 878 230
<br /> 08 Aug-00 MW lA 11000 9,500 OBM3100 <2 500 0 010 0 275 <1110 0 000 0 001 54 700 0 456 276
<br /> 08-Sep-00 MW IA 1,000 10,500 08/03/00 12,500 0 010 0 285 <1110 0 000 0 002 54 700 0 456 322
<br /> 01 Nov-00 MW-1A 303 10,803 10/30/00 217 0 001 0 286 356 0 000 0 002 69 300 0 175 339
<br /> 12-Dec-00 2 MW-IA 2000 12,803 10/30/00 217 0 004 0 289 356 0 000 0 002 69,300 1 157 455
<br /> 23 Jan-01 MW-lA 2000 14,803 01/23/01 Q,000 0 017 0 306 <20 0 000 0 002 21,000 0 350 490
<br /> 15-Feb-01 MW-lA 2000 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 2,000 18 803 01/23/01 4,000 0 017 0 340 QA 0 000 0 002 21000 0 350 560
<br /> 26-Apr-01 MW]A 2,000 20 803 01/23/01 <2 000 0 017 0 356 <20 0 000 0 002 21,000 0 350 595
<br /> 23-May-01 3 MW]A 2000 22,803 01123/01 <2,000 0 017 0 373 <20 0 000 0 003 21000 0 350 630
<br /> 08-Jun-01 MW IA 2,000 24 603 06/05/01 <2 000 0 017 0 390 QO 0 000 0 003 7,800 0 130 643
<br /> 22-Jun 01 MW-lA 500 25,303 06/05/01 <2,000 0 004 0 394 <20 0 000 0 003 7,800 0 033 646
<br /> 05 Jul-01 MW-lA 2,500 27 803 06/05/01 <2 O00 0 021 0 415 d0 0 000 0 003 7 800 0 163 662
<br /> 23-Jul-01 MW-lA 11800 29 603 06/05/01 <2000 0 015 0 430 <20 0 000 0 003 7 800 0 117 674
<br /> 09-Aug-01 MW-lA 2,300 31 903 07/27/01 <5,000 0 048 0 478 115 0 000 0 003 19,000 0 365 711
<br /> 25-Aug-01 MW-lA 2,400 34,303 07127/01 61000 0 050 0 528 <25 0 000 0 004 19,000 0 381 749
<br /> 08-Sep-01 MW IA 3,600 37 903 07127/01 <5,000 0 075 0 603 <25 0 000 0 004 19,000 0 571 806
<br /> 28-Sep-01 MW IA 2,800 40,703 07117101 <5,000 0 058 0 661 <25 0 000 0 004 19,000 0 444 850
<br /> 17-Oct-01 MW-IA 2,400 43 103 07/27/01 <5 000 0 050 0 711 45 0 000 0 005 19,000 0 381 888
<br /> 29-Oct-01 MW-lA 2 500 45,603 10/24/01 <5 000 0 052 0 763 <25 0 000 0 005 H 000 0 271 915
<br /> 14-Nov Ol MW]A 2,400 48,003 1MAIO1 <51000 0 050 0 813 d5 0 000 0 005 13,000 0 260 941
<br /> 28-Nov-01 MW]A 2,400 50 403 10/24/01 <5 000 0 050 0 864 <25 0 000 0 005 13,000 0 260 967
<br /> 12-Dec-01 MW IA 500 50,903 10124!01 <5 O00 0 010 0 874 d5 0 000 0 005 13,000 0 054 973
<br /> 26-Dec-01 MW lA 1,500 52,403 10/24/01 <51000 0 031 0 905 Q5 0 000 0 005 13,000 0 163 989
<br /> 09 Jan-02 MW lA 2,000 54 403 10/24!01 <5,000 0 042 0 947 <25 0 O00 0 006 13,000 0 217 1011
<br /> 23 Jan-02 MW-lA 11900 56 303 01/23/02 4,500 0 020 0 967 115 0 000 0 006 16 000 0 254 1036
<br /> 06-Feb-02 MW-lA 1 800 58,I03 01/23/02 Q,500 0 019 0 986 115 0 000 0 006 16 000 0 240 1060
<br /> 20-Feb-02 MW-lA 2000 60,103 01123/02 <2,500 0 021 101 d5 0 000 0 006 16 000 0 267 1087
<br /> 06-Mar-02 MW-lA 3 500 63,603 01/23/02 <2,500 0 037 104 d5 0 000 0 007 16,000 0 467 l 134
<br /> 20-Mar 02 MW-lA 2,700 66 303 01123/O2 11500 0 028 107 Q5 0 000 0 007 16,000 0 360 1170
<br /> 03-Apr-02 MW-lA 2,811 69,114 01123!02 <2,5110 0 029 110 d5 0 000 0 007 16,000 0 375 1107
<br /> 17 Apr-02 MW-lA 3,000 72,114 01/23/02 4,500 0 031 113 125 0 000 0 008 16,000 0 401 1247
<br /> 06-May-02 MW-1A 4,000 76,114 04/18/02 <200 0 003 114 d 0 0 000 0 008 990 0 033 12.51
<br /> 24-May-02 MW-1A 2,500 78,614 04/18/02 400 0 002 114 d.0 0 000 0 008 990 0 021 12.53
<br /> 10-Jun-02 MW-lA 3,000 81,614 04/18102 400 0 003 114 4.0 0 000 0 008 990 0 025 1255
<br /> 24-Jun-02 WMIA 2,800 84,414 04/18/02 400 0 002 114 d.0 0 000 0 008 990 0 023 12.57
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