Sauk County, Wisconsin’s old landfill currently sits on the US Environmental Protection Agency’s (EPA) Superfund list. The County has requested it be removed, as cleanup and geomembrane capping was performed last year. But officials want an engineer’s review, particularly in regards to the state of groundwater contamination. The site was marked for Superfund after an unlined portion of the landfill was found to have leaked toluene and benzene.