Environmentalists sue EPA to ban toxic chemical at refineries, including in Torrance, Wilmington Efforts to more strictly regulate the chemical, known as hydrofluoric acid and modified ...

Environmentalists sue EPA to reassess a toxic chemical used at a Pa. oil refinery Peter Hall Jul 14, 2025 0 ...

An environmental group is suing over a delay in air pollution rules for steel mills, arguing it puts neighboring communities outside the gates at risk.

If highly reactive hydrofluoric acid (HF) was released from the Delaware County refinery, it could form a ground-hugging cloud extending up to 17 miles and affecting as many as 1.9 ...