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March 2002 Off-Post Quarterly Groundwater Monitoring 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 |
| |
| 03/18/02 | 2.7 | ND | 0.2 | ND | 12/18/01 | 1.4 | ND | ND | ND |
| |
|
| 03/18/02 | 2.7 | ND | 0.24 | 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 | |||
| 03/18/02 | 4.5 | ND | 2.2 | ND | 10/25/01 | NA | ND | NA | ND |
|
| 12/17/01 | 12.44 | ND | ND | ND | ||||
| 03/19/02 | 5.71 | ND | 1.05 | ND | |||||
| NA � not applicable ND � indicates analyte was not detected at or above the method detection limit. | |||||||||