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CAMB RIA _
<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 (gal) (gal) Date (ppb) (pounds) (pounds) .- (ppb) (pounds) (pounds) _(ppb) (pounds) (pounds) _
<br /> 06-Mar-02 MW-lA 3,500 63,603 01/23/02 <2,500 0 037 104 <25 0 000 0 007 16,000 0 467 113
<br /> 20-Mar-02 MW-1A 2,700 66,303 01/23/02 02.,500 0 028 107 <25 0 000 0 007 16,000 0 360 117
<br /> 03-Apr-02 MW-lA 2,811 69,114 01/23/02 <2,500 0 029 1 10 <25 0 000 0 007 16,000 0 375 121
<br /> 17-Apr-02 MWAA 3,000 72,114 01/23/02 <2,500 0 031 1 13 <25 0 000 0 008 16,000 0 401 t2 5
<br /> 06-May-02 MW-lA 4,000 76,114 04/18/02 <200 0 003 I t4 <2 0 0 000 0 008 990 0 033 t2 5
<br /> 24-May-02 MW-lA 2,500 78,614 04/18/02 <200 0 002 1 14 <2 0 0 000 0 008 990 0 021 125
<br /> 10-Jun-02 MW-lA 3,000 81,614 04/18/02 <200 0 003 1 14 <2 0 0 000 0 008 990 0 025 12 6
<br /> 24-Jun-02 MW-1A 2,800 84,414 04/18/02 <200 0 002 1 14 <2 0 0 000 0 008 990 0 023 126
<br /> 08-Jul-02 MW-1A 3,200 87,614 04/18/02 <200 0 003 114 <2 0 0 000 0 008 990 0 026 12 6
<br /> 22-Jul-02 MW-1A 2,800 90,414 07/15/02 <250 0 003 115 <2 5 0 000 0 008 1,400 0 033 12 6
<br /> 07-Aug-02 MW-1A 4,000 94,414 07/15/02 <250 0 004 115 <25 0 000 0 008 1,400 0 047 127
<br /> 19-Aug-02 MW-1A 1,315 95,729 07/15/02 <250 0 001 115 <2 5 0 000 0 008 1,400 0 015 127
<br /> 16-Sep-02 MW-1A 3,325 99,054 07/15/02 <250 0 003 116 <2 5 0 000 0 008 1,400 0 039 127
<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 /> 114111-00 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 <05 0 000 0 000 526 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 0 626 0 626 <500 0 006 0 006 148,000 3 705 370
<br /> 07-Apr-00 BF-1 2,000 11,500 02/18/00 <50,000 0 417 104 <500 0 004 0 010 148,000 2 470 617
<br /> 09-May-00 BF-1 2,000 13,500 05/01/00 1,850 0 031 107 240 0 004 0 014 106,000 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 0 019 106,000 2 211 102
<br /> 11-Jul-00 BF-1 0 16,000 05/01/00 1,850 0 000 1 11 240 0 000 0 019 106,000 0 000 102
<br /> 08-Aug-00 BF-1 1,783 17,783 08/03/00 <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 1 329 132
<br /> 12-Dec-00 2 BF-1 2,480 21,613 10/30/00 18,300 0 379 156 260 0 005 0 029 64,700 1339 14 6
<br /> 23-Jan-01 BF-1 2,460 24,073 01/23/01 <20,000 0205 176 390 0 008 0 037 110,000 2 258 168
<br /> 15-Feb-01 BF-1 2,422 26,495 01/23/01 <20,000 0202 196 390 0 008 0 045 110,000 2 223 191
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