“For much of the past decade, oil companies engaged in drilling and fracking have been allowed to pump into the ground chemicals that, over time, can break down into toxic substances known as PFAS — a class of long-lasting compounds known to pose a threat to people and wildlife — according to internal documents from the Environmental Protection Agency.
The E.P.A. in 2011 approved the use of these chemicals, used to ease the flow of oil from the ground, despite the agency’s own grave concerns about their toxicity, according to the documents, which were reviewed by The New York Times.
In recent days, whistle-blowers have alleged in the Intercept that the E.P.A. office in charge of reviewing toxic chemicals tampered with the assessments of dozens of chemicals to make them appear safer. E.P.A. scientists evaluating new chemicals “are the last line of defense between harmful — even deadly — chemicals and their introduction into U.S. commerce, and this line of defense is struggling to maintain its integrity,” the whistle-blowers said in their disclosure, which was released by Public Employees for Environmental Responsibility, a Maryland-based nonprofit group.”