IMPERIAL REFINING COMPANY
Superfund Site Profile
The Imperial Refining Company site is located in Ardmore in Carter County, Oklahoma. Imperial Refining Company operated a crude oil refining facility on site from 1917 until 1934. Waste piles found on site were characterized as dry, asphalt-like tar mats associated with oil-contaminated soil on top of oil-stained clay. The waste piles contaminated soil and sediment with hazardous chemicals. Following construction of the site’s remedy, EPA removed the site from the Superfund program’s National Priorities List (NPL) in September 2013. Operation and maintenance activities are ongoing.