An article being carried by a number of papers (see here , here, and here...and here) about the likely ignition of a bio warfare arms race reminds us that Ft Detrick, the alleged site of said arms race ignition, through expansion into "the largest bio-weapons facility in the world," has a history of nearby TCE and PCE contamination:

[I]n the 1991 it was discovered that water supplies surrounding Ft. Detrick contained high levels of cancer causing agents, TCE and PCE. The Washington Post reported: “The Maryland Department of the Environment and the Frederick County Health Department tested 33 wells at homes near Area B. Half were contaminated with the two agents, six so badly that the water was unfit to drink. In a few wells, concentrations of the two chemicals exceeded Environmental Protection Agency limits many times over. In an Army monitoring well nearest the dump, the chemicals were so concentrated, "you could smell it," said Joseph Gortva, an engineer who is managing the cleanup.”