September 2001 Off-Post Quarterly Groundwater Monitoring Report
Table 5.1 - Pre- and Post-GAC Comparison for Wells LS-6, LS-7, and RFR-10
| 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 |
| 8/1/01 | 6.00 | NS | 0.31 F | NS | 3/20/01 | 3.76 | NS | 0.20 F | NS |
| 08/15/01 | 6.50 | NS | 0.34 F | NS | 6/12/01 | 4.00 | NS | 0.43 F | NS |
| 08/15/01 | 3.90 | NS | 0.25 F | NS | 07/13/01 | 4.10 | NS | 0.36 F | NS |
| 8/15/01 | GAC UNIT INSTALLED | 8/7/01 | GAC UNIT INSTALLED | ||||||
| 08/30/01 | 5.70 | ND | 0.57 F | ND | 08/08/01 | NS | ND | NS | ND |
| 09/19/01 | 6.70 | ND | 0.35 F | ND | 08/30/01 | 1.10 F | NS | ND | NS |
|
| 09/19/01 | 4.50 | ND | 0.81 F | ND | ||||
| RFR-10 | ||||
|
| PCE (ug/L) | TCE (ug/L) | ||
| Date | Pre | Post | Pre | Post |
| 9/19/01 | 14.0 | NS | 7.50 | NS |
| 10/3/01 | 19.0 | NS | 8.70 | NS |
| 10/9/01 | GAC UNIT INSTALLED | |||
| 10/12/01 | 20.89 | ND | 8.21 | ND |
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NS - indicates sample not collected.
ND – indicates analyte was not detected at or above the method detection limit.
F flag indicates the analyte was positively identified but the associated numerical value is below the RL.