By Jeff Parker
It has been nearly 40 years since the Toxic Substances Control Act (TSCA) banned the use of PCBs. Yet estimates suggest that as much as half of PCB stocks remain in their original end-use products or the environment,1 where they could persist for another century and harm human health and the environment.
In the U.S., many of the Monsanto Company’s Aroclor sources have long been overlooked and are difficult to trace.2 But there are ways to investigate the problem and prioritize action in order to hasten their eventual elimination.
Municipalities, corporations and taxpayers spend billions on Superfund cleanups, but PCB releases from a huge range of...