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Application of a Solvent Emulsion Technology for PCB Removal from Older Structures on DoD Facilities
Cost and performance rept.
ENVIRONMENTAL SECURITY TECHNOLOGY CERTIFICATION PROGRAM ALEXANDRIA VA
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Polychlorinated biphenyls PCBs are a group of synthetic aromatic compounds with the general formula C12H10-xClx that were historically used by industry because of their excellent dielectric properties and their resistance to heat and chemical degradation. PCBs were commonly used as additives in paints and asphaltic-based adhesives that were subsequently applied to Department of Defense DoD structures. Prior to 1979, PCBs were extensively used in industrial paints, caulking material, and adhesives, as their properties enhanced structural integrity, reduced flammability, and boosted antifungal properties. Numerous DoD facilities have older metal structures upon which paints containing PCB were applied. These painted structures may present risks to human health or the environment because of inhalation or ingestion concerns, as the paint degrades and becomes brittle and can become airborne or impact soil, surface water, or groundwater. To date, no reliable methods are available that allow for the removal of PCBs from painted structures and equipment without damaging the coating or the structures and equipment. The overall objective of this project was to refine and deploy a safe, cost-effective, in situ treatment method for the removal and destruction of PCBs found on DoD structures.
APPROVED FOR PUBLIC RELEASE