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Appendix C - Pre- and Post-GAC Sample Comparisons
Wells LS-6, LS-7, RFR-10, RFR-11, LS-2/LS-3 and OFR-3
LS-2/LS-3 | LS-6 | |||||||||
| PCE (�g/L) | TCE (�g/L) |
| PCE (�g/L) | TCE (�g/L) | |||||
Date | Pre | Post | Pre | Post | Date | Pre | Post | Pre | Post | |
03/18/02 | 2.9/1.3 | NA | 0.29/0.63 | NA | 08/15/01 | GAC UNIT INSTALLED | ||||
04/2002 | GAC UNIT INSTALLED | 08/30/01 | 5.7 | ND | 0.57 | ND | ||||
04/11/02 | 0.82/1.53 | ND | ND/ND | ND | 09/19/01 | 6.7 | ND | 0.35 | ND | |
06/12/02 | 2.22/1.06 | NA | 0.31/0.20 | NA | 09/27/01 | 20.0 | NA | 0.38 | NA | |
09/17/02 | 2.62/2.9 | ND | 0.17/0.21 | ND | 12/18/01 | 1.97 | ND | ND | ND | |
03/12/03 | 4.25/3.99 | ND | 0.30/0.35 | ND | 03/18/02 | 2.7 | ND | 0.2 | ND | |
9/9/03 | 2.21/1.37 | ND | 0.39/0.14 | ND | 09/16/02 | 1.58 | ND | 0.1 | ND | |
3/3/04 | 0.98/1.09 | ND | 0.11/0.17 | ND | 03/12/03 | 4.19 | ND | 0.21 | ND | |
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| 9/11/03 | 2.49 | ND | 0.38 | ND | |
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| 3/1/04 | 3.61 | ND | 0.47 | ND |
LS-7 | OFR-3 | ||||||||||
Date | Pre | Post | Pre | Post | Date | Pre | Post | Pre | Post |
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| PCE (�g/L) | TCE (�g/L) |
| PCE (�g/L) | TCE (�g/L) | ||||||
08/07/01 | GAC UNIT INSTALLED | 03/19/02 | 12.15 | NA | 5.65 | NA |
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08/08/01 | NA | ND | NA | ND | 04/16/02 | 9.38 | NA | 3.77 | NA |
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08/30/01 | 1.1 | NA | ND | NA | 4/30/02 | GAC UNIT INSTALLED |
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09/19/01 | 4.5 | ND | 0.81 | ND | 04/30/02 | NA | ND | NA | ND |
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09/27/01 | 6.6 | NA | 0.68 | NA | 06/11/02 | 10.22 | NA | 6.24 | NA |
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12/18/01 | 1.4 | ND | ND | ND | 09/16/02 | 2.96 | ND | 2.59 | ND |
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03/18/02 | 2.7 | ND | 0.24 | ND | 03/12/03 | 2.81 | ND | 3.25 | ND |
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09/16/02 | 2.41 | ND | 0.34 | ND | 9/11/03 | 10.82 | ND | 6.42 | ND |
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03/12/03 | 4.01 | ND | 0.41 | ND | 3/1/04 | 2.87 | ND | 1.98 | ND |
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9/11/03 | 3.47 | ND | 0.34 | ND |
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3/1/04 | 3.1 | ND | 0.33 | ND |
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NA � not applicable (post-GAC not sampled during this event)
ND � indicates analyte was not detected at or above the MDL.
RFR-10 | RFR-11 | ||||||||
| PCE (�g/L) | TCE (�g/L) |
| PCE (�g/L) | TCE (�g/L) | ||||
Date | Pre | Post | Pre | Post | Date | Pre | Post | Pre | Post |
10/09/01 | GAC UNIT INSTALLED | 10/04/01 | 16.0 | NA | 0.35 | NA | |||
10/12/01 | 20.89 | ND | 8.21 | ND | 10/12/01 | 16.73 | NA | 0.58 | NA |
12/17/01 | 9.02 | ND | 5.85 | ND | 10/16/01 | GAC UNIT INSTALLED | |||
03/18/02 | 4.5 | ND | 2.2 | ND | 10/25/01 | NA | ND | NA | ND |
09/16/02 | 9.19 | ND | 4.84 | ND | 12/17/01 | 12.44 | ND | ND | ND |
03/12/03 | 13.88 | ND | 8.37 | ND | 03/19/02 | 5.71 | ND | 1.05 | ND |
9/11/03 | 24.56 | ND | 10.07 | ND | 09/16/02 | 8.44 | ND | 0.67 | ND |
3/1/04 | 23.23 | ND | 10.25 | ND | 03/12/03 | 10.02 | 0.07F | 0.12 | ND |
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| 9/11/03 | 0.99 | ND | 1.63 | ND |
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| 3/4/04 | 0.99 | ND | 1.25 | ND |
NA � not applicable (post-GAC not sampled during this event)
ND � indicates analyte