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December 2001 Off-Post Quarterly Groundwater Report
Table 5.1 - Pre- and Post-GAC Comparison for Wells LS-6, LS-7, RFR-10, and RFR-11
| LS-6 | LS-7 | |||||||||
| | PCE (ug/L) | TCE (ug/L) | | PCE (ug/L) | TCE (ug/L) | |||||
| Date | Pre | Post | Pre | Post | Date | Pre | Post | Pre | Post | |
| 08/15/01 | GAC UNIT INSTALLED | 08/07/01 | GAC UNIT INSTALLED | |||||||
| 08/30/01 | 5.7 | ND | 0.57 | ND | 08/08/01 | NA | ND | NA | ND | |
| 09/19/01 | 6.7 | ND | 0.35 | ND | 08/30/01 | 1.1 | NA | ND | NA | |
| 09/27/01 | 20.0 | NA | 0.38 | NA | 09/19/01 | 4.5 | ND | 0.81 | ND | |
| 12/18/01 | 1.97 | ND | ND | ND | 09/27/01 | 6.6 | NA | 0.68 | NA | |
|
| 12/18/01 | 1.4 | ND | ND | ND | |||||
| RFR-10 | RFR-11 | |||||||||
| | PCE (ug/L) | TCE (ug/L) | | PCE (ug/L) | TCE (ug/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 | ||||
|
| 10/25/01 | NA | ND | NA | ND | |||||
| 12/17/01 | 12.44 | ND | ND | ND | ||||||
| NA - not applicable ND � indicates analyte was not detected at or above the method detection limit. | ||||||||||