On August 10, the U.S. Court of Appeals for the Ninth Circuit decided the case of ASARCO LLC v. Atlantic Richfield Company, which involves the ongoing liability to clean up the East Helena Superfund Site, located “in and around an industrial area in Lewis and Clark County, Montana.” The Ninth Circuit, vacating the U.S. District Court in Montana’s grant of summary judgment, held that
[Ansarco’s] 1998 RCRA Decree did not resolve Asarco’s liability for at least some of its response obligations under that agreement. It therefore did not give rise to a right to contribution under CERCLA § 113(f)(3)(B). By contrast, the 2009 CERCLA Decree did resolve Asarco’s liability, and Asarco has brought a timely action for contribution under that agreement.





