Research & Data

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

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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Rulemaking Continuance (WAC 173-446) 6-3-22

This is a rulemaking continuance (CR-102) for Chapter 173-446 WAC, Climate Commitment Act Program.

https://ecology.wa.gov/rulemaking-continuance-wac-173-446-6-3-22

Rulemaking Announcement (WAC 173-441; WAC 173-446) 6-26-23

This is a rulemaking announcement (CR-101) for WAC 173-441, Reporting of Emissions of Greenhouse Gases and WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-441;-wac-173-446-6-26-23

Presentation (WAC 173-446B) 8-10-23

This is a presentation for the August 10, 2023 stakeholder meeting for Chapter 173-446B WAC, Climate Commitment Act Funds Reporting.

https://ecology.wa.gov/presentation-wac-173-446b-8-10-23

Presentation (WAC 173-446B) 9-7-23

This is a presentation for the September 7, 2023 stakeholder meeting for Chapter 173-446B WAC, Climate Commitment Act Funds Reporting.

https://ecology.wa.gov/presentation-wac-173-446b-9-7-23

Presentation (WAC 173-446B) 9-12-23

This is a presentation for the September 12, 2023 stakeholder meeting for Chapter 173-446B WAC, Climate Commitment Act Funds Reporting.

https://ecology.wa.gov/presentation-wac-173-446b-9-12-23

Rulemaking Announcement (WAC 173-446) 9-12-23

This is a rulemaking announcement (CR-101) for WAC 173-446, Climate Commitment Act Program Rule, cap-and-invest offsets.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446-9-12-23

Presentation (WAC 173-446B) 12-5-23

These are the presentation slides for the December 5, 2023 meeting to provide feedback on draft rule language for the CCA Funds Reporting rulemaking.

https://ecology.wa.gov/presentation-wac-173-446b-12-5-23

Rulemaking Announcement (WAC 173-424) 12-18-23

This is a rulemaking announcement (CR-101) for WAC 173-424, Clean Fuels Program Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-424-12-18-23

Rulemaking Emergency Adoption Notice (WAC 173-446) 1-4-24

This is the third emergency rulemaking adoption notice (CR-103E) for WAC 173-446, Climate Commitment Act Program R

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-446-1-4-24

Rulemaking Adoption Notice (WAC 173-446) 02/21/24

This is a rulemaking adoption notice for Chapter 173-446 WAC, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-446-02-21-24

Rulemaking Announcement (WAC 173-441-446) 04-11-24

This is a rulemaking announcement (CR-101) for WAC 173-441-446, Cap-and-invest Linkage.

https://ecology.wa.gov/rulemaking-announcement-wac-173-441-446-04-11-24

Washington State Climate Resilience Strategy Public Comment Draft

This draft public comment period details how to provide comments and feedback on the Climate Resilience Strategy.

https://ecology.wa.gov/public-comment-draft

CCA Funds Reporting Rulemaking Public Hearing I

Presentation deck for the June 5th and 13th CCA funds reporting rulemaking public hearings

https://ecology.wa.gov/presentation-wac-173-446b-6-5-24

Rulemaking Adoption Notice (WAC 173-446B)

Rulemaking adoption notice WAC 173-446B

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-446b-10-08-24

Rulemaking Announcement (WAC 173-443) 10-2-24

CR 101 for WAC 173-443

https://ecology.wa.gov/rulemaking-announcement-wac-173-443-10-2-24

Rulemaking Adoption Notice (WAC 173-441, 446)

Rulemaking adoption notice WAC 173-441, 446

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-441-446-12-03-24

Rulemaking Announcement (WAC 173-423) 11-20-24

CR 101 for WAC 173-423

https://ecology.wa.gov/rulemaking-announcement-wac-173-423-11-20-24

Questions (WAC 173-441, 446) 11-19-24

Questions from participants of the Nov. 19, 2024, linkage rulemaking info session

https://ecology.wa.gov/questions-wac-173-441-446-11-19-24

Clean Vehicles Program Rulemaking Public Info Session Dec. 10 2024

Slideshow presentation

https://ecology.wa.gov/clean-vehicles-program-rulemaking-public-information-session

Proposed offset protocol language (WAC 173-446) 2-12-25

This is the proposed protocol language for offset rulemaking, Chapter 173-446 WAC.

https://ecology.wa.gov/proposed-offset-protocol-language-wac-173-446-2-12-25