The California Department of Toxic Substances Control (DTSC) filed litigation on 14 December against prior owners and operators of the former Exide Technologies smelter in Vernon.
The lawsuit names 10 additional companies that DTSC allegedly share the responsibility of this contamination at the site most recently owned by Exide Technologies.
The company was renamed Stryten Manufacturing following the completion of a $179 million buy out by Atlas Holdings last year.
An Stryten spokesman told BEST: "Stryten purchased certain assets unrelated to this matter from the Exide bankruptcy estate. Stryten has no involvement with the Vernon facility or any of the numerous other assets of Exide that Stryten did not purchase."