Efforts to more strictly regulate the chemical, known as hydrofluoric acid and modified hydrofluoric acid, are escalating to ...

Three environmental groups are suing the EPA, asking a judge to order the agency to reassess its regulations on the chemical.

Rather than sue the agency on its own, as many others are currently doing, Air Alliance Houston will be trying a new legal tactic: joining a first-of-its-kind proposed class action lawsuit against the ...