Governing Law and Regulations
Washington Department of Ecology (WDOE) Hazardous Waste and Toxics Reduction Program
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. EPA categorizes wastes as hazardous waste or as acutely hazardous waste. WDOE categorizes its hazardous waste as dangerous waste, extremely hazardous waste, and special waste. In Washington, a waste that exhibits any of the dangerous waste characteristics under WAC 173-303-090 must be assigned the dangerous waste number corresponding to the characteristics exhibited by the waste.
• Administration and enforcement. WDOE's Hazardous Waste and Toxics Reduction Program administers and enforces the characteristic waste rules in Washington.
Washington requires additional tests to the federal testing criteria of reactivity, corrosivity, ignitability, and toxicity for classifying dangerous waste and extremely hazardous waste as characteristic wastes. WDOE requires testing as set forth in WAC 173-303-110 to determine whether the waste is designated under the state dangerous waste lists, characteristics, or criteria (WAC 173-303-080 to 173-303-100). For additional information on state testing for characteristic waste, see the state section HAZWASTE DETERMINATION (CLASSIFICATION).