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...

Washington State Agency Greenhouse Gas Reporting and Calculator Instructions

Instructions to help state agencies fill out the greenhouse gas calculator.

https://ecology.wa.gov/stateagencyghgcalculatorinstructions

Air Quality Application Portal Training Guide

Instructions about how to access the Air Quality Portal within Secure Access Washington. You must access this portal for reporting. Version 1.1

https://ecology.wa.gov/aqportaluserguide

Clean Air Rule Tracking System User Training Guide

Instructions for entering information into the Clean Air Rule Tracking system

https://ecology.wa.gov/cartsuserguide

Approved verifiers and verification bodies for greenhouse gas reporting

A list of approved third party verifiers and verification bodies in Washington's Greenhouse Gas Reporting Program.

https://ecology.wa.gov/2017ghgverifierlist

Clean Air Rule: Potentially Eligible Parties

Organizations that emit 70,000 metric tons of carbon pollution or more are regulated by the Clean Air Rule. This is a list of organizations that potentially meet this criteria.

https://ecology.wa.gov/potentialbussinessescoveredbycar

November 30, 2021 list of HFC manufacturers

This is the November 30, 2021 list of manufacturers that reported the status of their use of restricted hydrofluorocarbons (HFCs).

https://ecology.wa.gov/2021hfcmanufacturers

Adopted rule language (WAC 173-407) 02/21/18

This is adopted rule language for WAC 173-407 Greenhouse Gas Mitigation Requirements and Emissions Performance Standard for Power Plants.

https://ecology.wa.gov/adopted-rule-language-wac-173-407-02-21-18

Adopted rule language for (WAC 173-441) 09/15/16

This is adopted rule language for WAC 173-441 Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/adopted-rule-language-for-wac-173-441-09-15-16

Rulemaking Announcement (WAC 173-445) 04/30/20

This is a rulemaking announcement (CR-101) for WAC 173-445, Greenhouse Gas Assessment for Projects.

https://ecology.wa.gov/rulemaking-announcement-wac-173-445-04-30-20

Adopted rule language (WAC 173-446A) 06-01-22

This is adopted rule language for Chapter 173-446A WAC, Criteria for Emissions-Intensive, Trade-Exposed Industries.

https://ecology.wa.gov/adopted-rule-language-wac-173-446a-06-01-22

Rulemaking Announcement (WAC 173-446B) 5-25-23

This is a rulemaking announcement (CR-101) for WAC 173-446B, Climate Commitment Act Funds Reporting.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446b-5-11-23

Expedited Rulemaking Proposal (WAC 173-442) 03-22-23

This is an expedited rulemaking proposal (CR-105 form) for Chapter 173-442, Clean Air Rule.

https://ecology.wa.gov/expedited-rulemaking-proposal-wac-173-442-01-23-23

Agenda (WAC 173-443) 1-25-23

This is the agenda for the January 25, 2023 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/agenda-wac-173-443-1-25-23

Adopted rule language (WAC 173-446) 9-29-22

This is the adopted rule language for Chapter 173-446 WAC, Climate Commitment Act Program.

https://ecology.wa.gov/adopted-rule-language-wac-173-446-9-29-22

Agenda (WAC 173-443) 11-17-22

This is the agenda for the November 17, 2022 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/agenda-wac-173-443-11-17-22

Proposed rule repeal language (WAC 173-442) 03-22-23

This is the proposed rule repeal language for Chapter 173-442 WAC, Clean Air Rule.

https://ecology.wa.gov/proposed-rule-repeal-language-wac-173-442-01-23-23

Agenda (WAC 173-446) 01/11/22

This is the agenda for the January 11, 2022 stakeholder meeting for Chapter 173-446 WAC, Climate Commitment Act Program.

https://ecology.wa.gov/agenda-wac-173-446-01-11-22

Agenda (WAC 173-446A) 09/21/21

This is the agenda for the September 21, 2021 stakeholder meeting for Chapter 173-446A WAC, Criteria for Emissions-Intensive, Trade-Exposed Industries.

https://ecology.wa.gov/agenda-wac-173-446a-09-21-21

Rulemaking withdrawal Notice (WAC 173-491) 8/19/2021

This is a rulemaking withdrawal notice for WAC 173-491 WAC Emissions standards and controls for sources emitting gasoline vapors

https://ecology.wa.gov/rulemaking-withdrawal-wac-173-491-08-19-2021

Adopted rule language for (WAC 173-442) 09/21/16

This is adopted rule language for WAC 173-442 Clean Air Rule.

https://ecology.wa.gov/adopted-rule-language-for-wac-173-442-09-21-16