Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

See more about this collection...

LightRecycle Producers List 2023

This document lists producers of mercury lights in Washington state.

https://ecology.wa.gov/lightrecycle-producers-list-2020

Updating the Air Toxics Rule (WAC 173-460)

This is the overview of rulemaking for WAC 173-460, Controls for New Sources of Toxic Air Pollutants,

https://ecology.wa.gov/updating-the-air-toxics-rule

Chapter 4H Lab Control Log

WASTE TREATMENT AND IMMOBILIZATION PLANT CHAPTER 4H ANALYTICAL LABORATORY (LAB) CHANGE CONTROL LOG

https://ecology.wa.gov/chapter-4h

Occidental Storymap Plain Text Accessible

Plain text accessible PDF of the Occidental storymap

https://ecology.wa.gov/occidental-storymap-plain-text

Chapter 6A Inspection Plan

WASTE TREATMENT AND IMMOBILIZATION PLANT CHAPTER 6A INSPECTION PLAN CHANGE CONTROL LOG

https://ecology.wa.gov/chapter-6a

Chapter 8 Personnel Training

WASTE TREATMENT AND IMMOBILIZATION PLANT CHAPTER 8 PERSONNEL TRAINING CHANGE CONTROL LOG

https://ecology.wa.gov/chapter-8

Rulemaking Proposal (WAC 173-186) 6/5/19

This is a rulemaking proposal (CR-102) for WAC 173-186 Oil Spill Contingency Plan - Railroad.

https://ecology.wa.gov/rulemaking-proposal-wac-173-186-6-5-19

Waste Treatment and Immobilization Plant Analytical Laboratory Public Comment Period Focus Sheet

This Class 3 permit modification (8C.2017.4D) focuses on the operations of the Analytical Laboratory (Lab) and provides the operating details for the Analytical Lab under the Direct-Feed Low-Activity Waste configuration.

https://ecology.wa.gov/focus-sheet-3a9ad83c09b26cfd707a988692e9ab96

Response to Comments: Modification of RCRA WTP Lab Operations

Response to Comments: Modification of the Hanford Facility Resource Conservation and Recovery Act Permit for the Treatment, Storage, and Disposal of Dangerous Waste, Part III, Operating Unit Group 10 (WA7890008967) Waste Treatment and Immobilization Plant Analytical Laboratory Operations, 24590-LAB-PCN-ENV-16-002

https://ecology.wa.gov/response-to-comments

Rulemaking Proposal Language (WAC 173-186) 6/5/19

This is proposed rule language for WAC 173-186 Oil Spill Contingency Plan - Railroad 6/5/19.

https://ecology.wa.gov/rulemaking-proposal-language-wac-173-186-6-5-19

Rulemaking Announcement (WAC 173-460) 07/18/18

This is a rulemaking announcement (CR-101) for WAC 173-460, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/rulemaking-announcement-wac-173-460-07-18-18

CESF operator list

List of certified CESF operators.

https://ecology.wa.gov/cesf-operator-list-1

Solvay Chemicals, Longview

We regulate the water and hazardous waste activities at the Solvay chemical plant in Longview.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/solvay-chemicals

Alcoa Wenatchee

We regulate the water and hazardous waste at Alcoa's Wenatchee aluminum smelter in Malaga.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/alcoa-wenatchee

Irrigation System Aquatic Weed Control permit

This permit regulates the use of pesticides to manage plant and algae growth in irrigation systems.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/irrigation-system-aquatic-weed-control

Aquatic Plant & Algae Management General Permit

This permit covers the in-water and shoreline management of plants, algae, and phosphorus.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/aquatic-plant-algae-management

Aquatic Mosquito Control General Permit

This permit allows the use of insecticides to control mosquitoes.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/aquatic-mosquito-control

Underground storage tank operator certification

Learn how to get the required underground storage tank operator certification.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/ust-owner-and-operator-resources/operator-certification-training

State Emergency Response Commission (SERC)

State Emergency Response Commission implements the Emergency Planning and Community Right-to Know Act

https://ecology.wa.gov/regulations-permits/reporting-requirements/emergency-planning-community-right-to-know-act/state-emergency-response-commission

Water budgets of individual local trees

This study investigates how much water trees use and may help us mitigate stormwater.

https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/water-budgets-of-individual-local-trees