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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Presentation (WAC 173-441) 07/22/21

This is a presentation for the 7/22/21 stakeholder meeting for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/presentation-wac-173-441-07-22-21

Presentation (WAC 173-424) 11/16/21

This is a presentation for the 11/16/21 stakeholder meeting for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/presentation-wac-173-4246-11-16-21

Presentation (WAC 173-424) 10/06/21

This is a presentation for the 10/6/21 stakeholder meeting for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/presentation-wac-173-424-10-06-21

Presentation (WAC 173-441) 7-25-23

This is a presentation for the July 25, 2023 stakeholder meeting for Chapter 173-441 WAC, Electricity Markets.

https://ecology.wa.gov/presentation-wac-173-441-7-25-23

Presentation (WAC 173-441) 8-2-23

This is a presentation for the August 2, 2023 stakeholder meeting for Chapter 173-441 WAC, Electricity Markets.

https://ecology.wa.gov/presentation-wac-173-441-8-2-23

Presentation (WAC 173-441) 8-17-23

This is a presentation for the August 17, 2023 stakeholder meeting for Chapter 173-441 WAC, Electricity Markets.

https://ecology.wa.gov/presentation-wac-173-441-8-17-23

Presentation (WAC 173-441) 9-12-23

This is a presentation for the September 12, 2023 stakeholder meeting for Chapter 173-441 WAC, Electricity Markets.

https://ecology.wa.gov/presentation-wac-173-441-9-12-23

Presentation (WAC 173-441) 9-28-23

These are the presentation slides from the 9/28/23 meeting with the Southwest Power Pool for the Electricity Markets rulemaking.

https://ecology.wa.gov/presentation-wac-173-441-9-28-23

Presentation (WAC 173-441) 10-12-23 & 10-16-23

This is the presentation for the October 12 and 16, 2023 meetings to provide feedback on draft rule language for the Electricity Markets rulemaking.

https://ecology.wa.gov/presentation-wac-173-441-10-12-23-10-16-23

Presentation (WAC 173-441) 11-8-23

These are the presentation slides for the November 8, 2023 public meeting for Chapter 173-441 WAC, Electricity Markets rulemaking.

https://ecology.wa.gov/presentation-wac-173-441-11-8-23

Presentation (WAC 173-441) 1-24-24

These are the presentation slides for the January 24, 2024 meeting on updated draft rule language for the Electricity Markets rulemaking.

https://ecology.wa.gov/presentation-wac-173-441-1-24-24

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

CFS Rulemaking Updates

Slideshow presentation from the Sept. 9 and 12, 2024, CFS Rulemaking Update webinar

https://ecology.wa.gov/presentation-wac-173-424-9-9-and-9-12-2024

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

Chapter 173-441 and -446 WAC Linkage Rulemaking - Electricity Considerations

Slideshow presentation from the Cap-and-Invest linkage rulemaking public meeting (Nov. 19, 2024)

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

CFS Workshop on Draft Rule Language

Slideshow presentation

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

Combined Community Forum: CVP & HFC Rulemaking

Presentation deck for the Jan 29 combined community forum

https://ecology.wa.gov/presentation-wac-173-434-443-1-29-25