Governing Law and Regulations
Washington Department of Ecology (WDOE) Hazardous Waste and Toxics Reduction Program
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Washington follows 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 Washington as of April 30, 2019, which includes standards for generators accumulating hazardous waste on-site in tanks. In addition, Washington's tank rules include both federal and more stringent state requirements. The state's more stringent requirements are in connection with labeling and marking tanks, location standards, tank integrity assessments, inspections, and toxic air emissions as they apply to hazardous waste treatment, storage, and disposal facilities (TSDFs), large quantity ...