Hide Alert

Welcome to our new website. Learn more about what's new.

Chapter 173-303 WAC

The Department of Ecology proposes to amend Chapter 173-303 WAC, Dangerous Waste Regulations. These regulations set standards for the safe management of dangerous wastes. Ecology plans to amend specific sections of the dangerous waste regulations to incorporate new federal hazardous waste rules. We propose to restructure the regulations for easier use and improved compliance. The proposed changes in the dangerous waste regulations will affect most dangerous waste generators. These changes may affect how generators manage their dangerous waste, adding regulations for pharmaceutical waste, solvent-contaminated wipes, recycling of dangerous waste, and dangerous waste import and export.

Rulemaking Timeline


Announcement Phase (CR-101)

Filing date:
Feb. 21, 2017

Announcement documents


Rule Development Phase

February 21, 2017 - July 2018

Public input & involvement

In 2016, Ecology developed draft rule language and asked for public feedback. 

Ecology received comment letters from the following organizations: An informational webinar was held November 2016-view it on YouTube.

In 2017, Ecology held two public meetings and a webinar to explain the changes and hear from you.
  • Public meetings
    • November 9, 2017 at Ecology's Northwest Regional Office, Bellevue
    • December 4, 2017 at Ecology's Eastern Regional Office, Spokane
  • Webinar
Ecology accepted informal comments on the Preliminary Draft Rule in Fall 2017. View comments

Related Documents

Additional Languages

Español (Spanish) 中文 (Chinese) Tiếng Việt (Vietnamese) 한국어 (Korean)


To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, call Hanna Waterstrat at 360-407-7668 or email hanna.waterstrat@ecy.wa.gov. Persons with impaired hearing may call Washington Relay Service at 711. Persons with speech disability may call TTY at 877-833-6341.