Wisconsin Hazardous Waste Tanks: What you need to know

Hazardous waste tank rules for hazardous waste treatment, storage, and disposal facilities (TSDFs): Wisconsin Administrative Code, Department of Natural Resources (NR) 662.194, 664.0190 to 664.0200; NR 665.0190 to 665.0202 (interim status)

Organic air emissions standards: NR 664.1030 to 664.1090 and NR 665.1030 to 665.1090 (interim status)

Tank management requirements for hazardous waste large quantity generators (LQGs): NR 662.017

Tank management requirements for hazardous waste small quantity generators (SQGs): NR 662.016(2)(c) and NR 662.016(2)(f)

Tank management requirements for hazardous waste very small quantity generators (VSQGs): NR 662.014(5)

Wisconsin Department of Natural Resources (DNR) Environmental Management Division Waste & Materials Management Program

• Rules. Wisconsin has adopted the federal hazardous waste tank requirements, including the organic air emissions standards. The state has adopted the U.S. Environmental Protection Agency's (EPA) Hazardous Waste Generator Improvements Rule, effective in Wisconsin as of September 1, 2020, which includes standards for generators accumulating hazardous waste on-site in tanks. Wisconsin has added requirements for very small quantity generators (VSQGs) that use tanks to accumulate or store hazardous waste. See the state section HAZARDOUS WASTE STORAGE to review the applicable requirements for storing hazardous waste in tanks.

• Administration and enforcement. The Wisconsin Department of Natural Resources' (DNR) Environmental Management Division administers and enforces the hazardous waste tank rules in Wisconsin, including the organic air emissions standards.