Dangerous waste (DW) container rules: Washington Administrative Code (WAC) 173-303-630 and WAC 173-303-400 (interim status)
Dangerous waste treatment tank rules: WAC 173-303-640 and WAC 173-303-400 (interim status)
Dangerous waste land treatment rules: WAC 173-303-655 and WAC 173-303-400 (interim status)
Dangerous waste surface impoundment rules: WAC 173-303-650 and WAC 173-303-400 (interim status)
Dangerous waste incineration rules: WAC 173-303-670 and WAC 173-303-400 (interim status)
Chemical, biological, and physical treatment rules: WAC 173-303-400(3)(a)
Thermal treatment rules: WAC 173-303-400(3)(a)
Neutralization of DW: WAC 173-303-040, WAC 173-303-400 (2)(c)(iv), WAC 173-303-600 (3)(j), and WAC 173-303-802(5)
Generator on-site treatment:
Large quantity generators and medium quantity generators: WAC 173-303-170(3)(b)
Small quantity generators: WAC 173-303-070(8)(b)
Special waste: WAC 173-303-170(3)(c)
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.
• Rules. Washington's dangerous waste (DW) treatment rules include the federal requirements and the state's more stringent rules, which apply to facility permit application process, treatment facility design, construction and operation, and on-site treatment by large quantity generators (LQGs), medium quantity generators (MQGs), and small quantity generators (SQGs).
Washington has established a waste management hierarchy that encourages waste reduction and recycling over treatment or disposal of wastes. Refer to the state section POLLUTION PREVENTION