In addition to any other authority granted by law, if the Department of Environmental Quality finds that ground water is contaminated with a hazardous substance originating at a land disposal site, the department may require cleanup of the hazardous substance pursuant to authority under ORS 465.200 to 465.485. As used in this section, 'hazardous substance' has the meaning given that term in ORS 465.200. [1993 c.526 §3]
Oregon Legal Code