Superfund Site Profile
The 1,200-acre Koch Refining Co./N-Ren Corp. site is located in Rosemount, Minnesota. The area includes an active oil refinery and adjacent properties owned by Koch Refining Company. Product spills contaminated soil and groundwater with hazardous chemicals. Oversight of cleanup was deferred to the State of Minnesota. EPA took the site off the Superfund program’s National Priorities List (NPL) in 1995.