DNR investigates oil contamination in northern Wisconsin By Associated Press - August 5, 2022 FacebookTwitterEmailPrint MADISON, Wis. (AP) — The state Department of Natural Resources is investigating contaminated soil near the Bad River Band of Lake Superior Reservation in far northern Wisconsin. DNR officials said Enbridge Inc. reported Wednesday that […] Welcome. This content requires a membership. Already a member? Sign In. Or purchase one of our memberships.