Category Archives: Groundwater

EPA Proposes Safe Drinking Water Act Standards for PFAS: Forever Chemicals Will Lead to Forever Superfund Sites

Yesterday, EPA proposed to regulate certain PFAS under the Safe Drinking Water Act.  EPA proposed Maximum Contaminant Level Goals for PFOA and PFOS of zero.  It proposed Maximum Contaminant Levels for PFOA and PFOS of 4.0 parts per trillion. 

EPA also proposed MCLGs and MCLs for PFNA, PFHxS, PFBS, and HFPO-DA (“GenX Chemicals”) based on a novel hazard index approach to these compounds as a group. … More

Does Environmental Review of Projects Needed for a Net-Zero Economy Lead to a Death By a Thousand Cuts?

Earlier this week, the decision in Bartell Ranch v. McCullough generally supported the Bureau of Land Management’s review under NEPA and related statutes of a lithium mine near Thacker Pass, Nevada.  If approved, Thacker Pass would be the largest lithium mine in the United States.  The decision and the entire review of the mine are important, given how controversial large mining projects can be and how important lithium and other minerals are to building a zero-emission economy.… More

More Action By EPA on PFAS; The Bad News Keeps Piling Up.

The news about PFAS keeps piling up, and the trend is pretty clear – none of it is good for manufacturers and significant users.  There were two important items this week.

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

The Law Is An Ass, RCRA Edition

Late last month, the 9th Circuit Court of Appeals ruled that a public water supplier could be liable in a citizens’ suit brought under the imminent and substantial endangerment provisions of RCRA, where the plaintiff alleged that the groundwater used by the supplier had been contaminated by the disposal of hexavalent chromium by a wood treatment facility upgradient of the supplier’s well field.

Blaming the victim doesn’t quite cover this. … More

Implementing Maui Remains a Case-by-Case Affair, at Least for Now

Last week, EPA withdrew guidance issued in the waning days of the Trump Administration interpreting the Supreme Court decision in County of Maui v. Hawaii Wildlife FundAs the masochists who follow the torturous case law we call Clean Water Act jurisprudence are well aware, SCOTUS ruled in Maui that discharges from point sources to groundwater that are the “functional equivalent” of a direct discharge to surface water are required to obtain NPDES permits.… More