The Toxic Legacy: Chemical Warfare, Nuclear Waste, and Contamination at Fort McClellan
Chemical Warfare Agents (CWAs) and Training Hazards
A wide range of specific chemical warfare agents and related decontamination substances were detected across Fort McClellan, primarily linked to historical training in detection, identification, and decontamination.
Lethal and Incapacitating Agents Detected:
- Mustard Gas (H, HD, L, Sulfur Mustard): The most widespread agent, detected at 9 different sites including the Former Toxic Gas Area (Parcel 211), Pelham Range (Parcel 207), and the Anniston Army Depot.
- Sarin (GB) & VX Nerve Agent: Sarin was detected at 5 sites and VX at 3 sites, including the high-risk Training Area T-38 (Parcel 186) and the Anniston Army Depot.
- Phosgene (CG): A choking agent found at Parcel 186 and Parcel 187.
- Blood Agents: Cyanogen Chloride (CK) and Hydrogen Cyanide (AC) were detected at Parcel 180.
- Other Agents: BZ (Incapacitating Agent) was found at Parcel 187, and Phosgene Oxime (CX) was found at Parcel 180.
Decontamination and Training Substances:
- Slurries: STB (Super Tropical Bleach) and DS-2 (Decontamination Solution 2) were common at CWA sites.
- Riot Control: CN, CS, and CL were used for training in the Former Toxic Gas Area (Parcel 211).
High-Risk Parcels: Classification and Safety Status
SAFETY WARNING: Most of these sites are classified as Category 7 (Highest Risk) or Category 6, indicating a known release of hazardous substances requiring active regulatory intervention and safety restrictions prior to final transfer.
| Parcel ID | Category | Site Description | Current Remediation/Safety Status |
|---|---|---|---|
| Parcel 211(7)HR | Category 7 | Former Toxic Gas Area, Pelham Range | Remedial Investigation (RI) recommended. |
| Parcel 186(6)HR | Category 6 | Training Area T-38 (Toxic Gas Yard) | Remedial Investigation (RI) recommended. |
| Parcel 187(7)HR(P) | Category 7 | Bandholtz Range (Munitions Disposal) | Further evaluation required due to detected VOCs and metals. |
| Parcel 180(7)HR(P) | Category 7 | Former Detection and Identification Area | RI/FS pending. Proposed deed restrictions to limit land use. |
| Anniston Army Depot (ANAD) | NPL (Superfund) | Major Production Facility | Contaminated groundwater treated; soil excavated or capped; vapor intrusion monitoring recommended. |
| Burial Mound | Radiological | Low-level radioactive waste disposal cell | Excavation and removal of contaminated material for off-site disposal. |
Other Major High-Risk Contamination: Nuclear, Oil, and Landfills
- Radiological Waste: Sites like the **Burial Mound** and **Building 3192** (training facility with a hot cell) contain Cobalt-60 ($^{60}$Co) and Cesium-137 ($^{137}$Cs).
- Petroleum, Oil, and Lubricant (POL) Sites: Former fueling points (e.g., Parcel 4(7)PS/PR) were contaminated with TPH, Lead, and Benzene. These sites require **ongoing groundwater monitoring**.
- Landfills and Ordnance: **Parcel 80** (Former Landfill No. 3) requires remedial action due to chemical contamination. **Parcel 204(7)HR(P) (Range L/Lima Pond)** was used for disposal of captured WWII munitions.
- PFAS Contamination: Multiple areas (AOPIs), including the Fire Training Pit (Parcel 77) and Reilly Airfield, are suspected of contamination from Aqueous Film Forming Foam (AFFF) and warrant further Site Inspection.
Key Remediation and Safety Methods
The strategy for managing these high-risk areas is multi-faceted, primarily managed under the CERCLA/BRAC framework:
- Physical Removal: Includes **excavation and off-site disposal** (for radiological sites) and removal of Underground Storage Tanks (USTs).
- Ordnance Clearance: Sites such as Parcel 182 require initial **UXO surveying and clearance of surface ordnance**.
- Containment and Restrictions: This involves treating contaminated groundwater and capping soil at the Anniston Army Depot, and implementing **proposed deed restrictions** to limit future land use.
- Long-Term Monitoring: Ongoing **semi-annual or quarterly groundwater monitoring** programs are mandated for many sites.
Keywords:
Fort McClellan | Chemical Warfare Agents | Mustard Gas | Sarin (GB) | VX Nerve Agent | High-Risk Parcels | Category 7 | Environmental Cleanup | BRAC | Superfund (NPL) | Radiological Contamination | Cobalt-60 | PFAS | AFFF | UXO | Deed Restrictions | Alabama | Fort McClellan Toxic Exposure
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