Washington Administrative Code Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Washington Administrative Code (WAC) – Title 173: Department of Ecology
Title 173 of the Washington Administrative Code (WAC) contains the rules and regulations established by the Washington State Department of Ecology. This title governs a wide range of environmental protection efforts in Washington State. These rules cover areas such as:
Air quality
Water resources and water quality
Waste management
Hazardous substances
Shoreline management
Environmental cleanup
Toxic substances and pollution prevention
Key Chapters Under WAC Title 173 Include (examples):
173-201A – Water Quality Standards for Surface Waters of the State of Washington
173-216 – State Waste Discharge Permit Program
173-303 – Dangerous Waste Regulations
173-400 – General Regulations for Air Pollution Sources
173-422 – Motor Vehicle Emission Inspection
173-557 – Water Resources Management Program for the Dungeness Watershed
173-700 – Mitigation Banks
Related Titles You May Want to Refer To:
WAC 197 – Environmental Protection, Generally (Includes SEPA rules – State Environmental Policy Act)
WAC 317 – Maritime environmental issues (Oil and hazardous substance spill prevention and response)
WAC 372 – State Environmental Policy (Historical references)
WAC 508 – Ecology-related procedural rules (older chapters or specialized topics)
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