Research & Data

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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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Informal draft rule changes to 173-441 WAC for Electricity Markets rulemaking

This document lists informal draft rule language changes to Chapter 173-441 WAC (Reporting of Emissions of Greenhouse Gases) for the Electricity Markets rulemaking.

https://ecology.wa.gov/informal-draft-rule-changes-to-173-441-wac-for-electricity-markets-rulemaking

Informal draft rule changes to 173-446 WAC for Electricity Markets rulemaking

This document lists informal draft rule language changes to Chapter 173-446 WAC (Climate Commitment Act Program) for the Electricity Markets rulemaking.

https://ecology.wa.gov/informal-draft-rule-changes-to-173-446-wac-for-electricity-markets-rulemaking

Draft rule language (173-446B WAC) 11-13-23

This is draft rule language for Chapter 173-446B WAC, the Climate Commitment Act Funds Reporting Rulemaking.

https://ecology.wa.gov/draft-language-chapter-173-446b-wac

Draft rule changes (not tracked) to 173-446 WAC for Electricity Markets rulemaking (1/23/24)

This document lists the third informal draft rule language changes (not tracked) to Chapter 173-446 WAC (Climate Commitment Act Program) for the Electricity Markets rulemaking.

https://ecology.wa.gov/informal-draft-rule-changes-to-173-446-wac-for-electricity-markets-rulemaking-1-22-24

Draft rule changes (tracked) to 173-441 WAC for Electricity Markets rulemaking (1/23/24)

This document lists the third informal draft rule language changes (tracked) to Chapter 173-441 WAC (Reporting of Emissions of Greenhouse Gases) for the Electricity Markets rulemaking.

https://ecology.wa.gov/draft-rule-changes-tracked-to-173-441-wac-for-electricity-markets-rulemaking-1-23-24

Draft rule changes (tracked) to 173-446 WAC for Electricity Markets rulemaking (1/23/24)

This document lists the third informal draft rule language changes (tracked) to Chapter 173-446 WAC (Climate Commitment Act Program) for the Electricity Markets rulemaking.

https://ecology.wa.gov/draft-rule-changes-tracked-to-173-446-wac-for-electricity-markets-rulemaking-1-23-24

Presentation (WAC 173-424) 2-22-24

These are the presentation slides for the February 22, 2024 meeting for the Clean Fuel Standard rulemaking.

https://ecology.wa.gov/presentation-wac-173-424-2-22-24

Presentation (WAC 173-424) 2-28-24

These are the presentation slides for the February 28, 2024 meeting for the Clean Fuel Standard rulemaking.

https://ecology.wa.gov/presentation-wac-173-424-2-28-24

Clean Fuel Standard Rulemaking - May Presentation

.pdf slides for May 2nd and 8th Clean Fuel Standard Rulemaking webinars

https://ecology.wa.gov/presentation-wac-173-424-5-24

Listening Session: Liquid Fuels and Mass Balance Accounting

.pdf presentation for June 12, 2024 listening session on liquid fuels and mass balance accounting

https://ecology.wa.gov/presentation-wac-173-424-6-12-24

Draft proposed rules changes to 173-441 WAC

.pdf of draft rule changes for WAC 173-441

https://ecology.wa.gov/draft-rule-language-173-441-wac-7-1-24

Draft proposed rules changes to 173-446 WAC

.pdf of draft rule changes for WAC 173-446

https://ecology.wa.gov/draft-rule-language-173-441-wac-7-1-26

Washington State Climate Resilience Strategy Summary - English

Climate Resilience Strategy Summary in English

https://ecology.wa.gov/english-washington-state-climate-resilience-strategy-summary

Draft rule language (tracked) (173-446)

draft rule language for WAC 173-446, offsets protocols

https://ecology.wa.gov/draft-rule-language-173-446-wac-10-1-24

Presentation (WAC 173-424) 9-26 2024

Slideshow presentation from the Sept. 26, 2024, CFS Rulemaking Update webinar

https://ecology.wa.gov/presentation-wac-173-424-9-26-2024

Environmental Justice Presentation (WAC 173-446) 10-21-24

This is a presentation for the October 21, 2024 Environmental Justice listening session for Chapter 173-446 WAC, Cap-and-invest rulemaking.

https://ecology.wa.gov/presentation-wac-173-446-11-14-23-540261c1d121085d0b0e570d950387a7-1ecee0d19f94900fb988911963b64367

CFS Workshop on Draft Rule Language

Slideshow presentation

https://ecology.wa.gov/presentation-wac-173-424-12-5-and-12-11-2024

Draft proposed rules changes to 173-443 WAC

draft rule language for WAC 173-443, hydrofluorocarbons

https://ecology.wa.gov/draft-rule-changes-summary-wac-173-443-1-16-25

Presentation (WAC 173-423) 1-30-25

This is a presentation for the January 30, 2025 industry focused meeting for Chapter 173-423 WAC, Clean Vehicles Program rulemaking.

https://ecology.wa.gov/presentation-wac-173-423-1-30-25

Presentation (WAC 173-423) 2-3-25

This is a presentation for the February 3, 2025 public information session for Chapter 173-423 WAC, Clean Vehicles Program rulemaking.

https://ecology.wa.gov/presentation-wac-173-423-2-3-25