At the intersection of Route 3 and the tail-end of Long Lake (one of the few remaining surface-water bodies in the Bottom) is the shuttered and fenced site of the former Chemetco plan. A secondary copper refining site, at its peak output in the early 2000s it was producing approximately half of the entire US copper output from residual sources. However, during a routine inspection, the EPA found an illegal 10" discharge pipe that had been channeling waste material--zinc oxide, lead, cadmium, and others--into the adjacent Long Lake and Cahokia Canal for over a decade. Charged with felony counts in relation to violations to the Clean Water Act, the site was immediately capped and is now a superfund site recently elevated to the National Priorities list.