| STATUS | |
|---|---|
| RRSE Rating | Contaminants |
| High | Explosives, Lead, PCBs, PAHs, Arsenic |
| Media of Concern | Completed IRP Phase |
| Soil, Groundwater, Sediment | RFA, RFI, CMS |
| Current IRP Phase | Future IRP Phase |
| DES | CMI(C) |
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SITE DESCRIPTION
Site VAAP-32 includes the old and new TNT production facilities, Salvage Yard, Redwater Treatment Plant, and the Industrial Surface Water Pollution Control Facilities (former site VAAP-34). The site originally consisted of 16 TNT production batch process lines built in 1942 in support of WWII. Today, only the foundations of the old batch process lines and buildings of six new continuous process lines, which were constructed between 1971 and 1975, are present at the site. Decontamination of the former Red Water Treatment Plant, located at the northern perimeter of VAAP-32, was completed by burning in February 2004; demolition of the remaining equipment was completed thereafter.
Limited disposal occurred at the site. Contamination is suspected to be primarily the result of spills during production of TNT in the old batch line area. Groundwater contamination is complicated by the presence of karst geology and was there for separated and covered as part of VOAAP 35.
Initial RFI results indicated high levels of explosives in soil, sediment and groundwater. Additional contaminants include arsenic, lead, PCBs and PAHs.
A Draft RFI, Draft risk assessment and Draft CMS were previously completed. As a result of these efforts, new areas of concern were discovered, including the Redwater Ash Disposal & Handling Areas, AOC 9, AOC 10B, Salvage Yard and other miscellaneous areas of concern. Sampling was completed at these areas in 2000. The RFA for AOC 9, AOC-10, AOC 10b, and the Salvage Yard was completed in June 2002. AOC 9 and AOC 10 required no further action and are response complete. AOC-10b, a.k.a. the Figure 8 Area, required an ICM which was conducted in early 2004. During the interim measure additional material was discovered and is currently being assessed. For the Salvage Yard, a limited removal action will be required.
PROPOSED PLAN
The Statement of Basis for TNT Manufacturing Valley is scheduled for completion in FY 2005. Based on previous studies, it is anticipated that the Statement of Basis will propose that remediation of TNT-contaminated soil will be required for the TNT Manufacturing Valley. Treatability studies will be performed to evaluate remedial options for both shallow and deep (> 10 ft bgs) contaminated soil within the TNT manufacturing valley. Treatability will consider multiple technologies, as well as consideration of the interrelationship of groundwater and soil.
The ICM conducted at AOC 10b identified additional debris unrelated to the areas addressed under the ICM. As a result, this site will likely require additional work under a RFI and potentially a CMS.
The Draft RFI Report for the Salvage Yard was submitted to USEPA and TDEC in July 2004. Once the RFI is completed, it is anticipated that the Salvage Yard will require remedial action to remove lead contamination. The results of the remedial action will allow a no further action decision in the RFI report.
Groundwater contamination and LTM will be addressed under VAAP-35.
