Last week, Inside EPA (subscription required) reported that EPA will reopen CERCLA cleanups due to the presence of PFAS on a case-by-case basis. The article reported on the gnashing of teeth among the regulated community at the prospect of seeing a significant number of sites reopened. As a card-carrying member of the regulated community, I am prone to teeth-gnashing as well. And I agree with my friend Jeff Porter,… More
Tag Archives: PFOS
EPA announced today that it is proposing to list PFOA and PFAS as hazardous substances under CERCLA. EPA appears to be sanguine about how the listing will play out in the real world.
EPA is focused on holding responsible those who have manufactured and released significant amounts of PFOA and PFOS into the environment. EPA will use enforcement discretion and other approaches to ensure fairness for minor parties who may have been inadvertently impacted by the contamination.… More
Just when we environmental old-timers were just getting used to talk about PFAS concentrations in the low parts per trillion range, EPA has moved us squarely into uncharted territory. EPA has released new, interim, lifetime drinking water health advisories of 4 parts per quadrillion for PFOA and 20 parts per quadrillion for PFOS. I’ll just note a couple of points:
- I think it sort of charming that EPA still states the health advisories in the units of parts per trillion (0.004 ppt for PFOA and 0.020 ppt for PFOS,…
First, EPA published its human health toxicity assessment for “GenX chemicals,” also known as hexafluoropropylene oxide (“HFPO”) dimer acid (and don’t forget its ammonium salt!). EPA has pegged HFPO’s toxicity at 7-100 times higher than that of other PFAS compounds for which assessments already exist,… More
If you were thinking that PFAS were important, but you’ve been unsure just how big a deal they are, you need look no further than the Statewide PFAS Directive issued by the New Jersey Department of Environmental Protection. Some of my colleagues in New Jersey may correct me, but I think that the Directive may be the most wide-ranging order I’ve ever seen issued by an environmental agency. … More