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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 173-443) 07/21/20

This is the presentation for the July 21, 2020 public hearing for Chapter 173-443 WAC, Hydrofluorocarbons rulemaking.

https://ecology.wa.gov/presentation-wac-173-443-07-21-20

Presentation (WAC 173-443) 01/28/20

This is the presentation for the January 28, 2020 stakeholder meeting for Chapter 173-443, Hydrofluorocarbons rulemaking.

https://ecology.wa.gov/presentation-wac-173-443-01-28-20

Presentation (WAC 173-444) 05/13/20

This is the presentation for the May 13, 2020 stakeholder meeting for Chapter 173-444, Clean Energy Transformation rulemaking.

https://ecology.wa.gov/presentation-wac-173-444-05-13-20

Presentation (WAC 173-443) 12/17/19

This is a presentation for the 12/17/19 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/presentation-wac-173-443-12-17-19

Presentation (WAC 173-444) 03/16/20

This is the presentation for the March 16, 2020 stakeholder meeting for Chapter 173-444, Clean Energy Transformation rulemaking.

https://ecology.wa.gov/presentation-wac-173-444-03-16-20

Presentation (WAC 173-444) 02/12/20

This is the presentation for the February 12, 2020 stakeholder meeting for Chapter 173-444, Clean Energy Transformation rulemaking.

https://ecology.wa.gov/presentation-wac-173-444-02-12-20

Presentation (WAC 173-443) 11/13-14/19

This is a presentation for the 11/13-14/19 stakeholder meetings for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/presentation-wac-173-443-11-13-14-19

Presentation (WAC 173-444) 01/14/20

This is a presentation for the 1/14/20 stakeholder meeting for Chapter 173-444 WAC, Clean Energy Transformation.

https://ecology.wa.gov/presentation-wac-173-444-01-14-20

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

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

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

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

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

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

Presentation (WAC 173-443) 7-14-22

This is a presentation for the July 14, 2022 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/presentation-wac-173-443-7-14-22

Presentation (WAC 173-443) 7-6-22

This is a presentation for the July 6, 2022 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/presentation-wac-173-443-7-6-22-2

Presentation (WAC 173-443) 5-10-22

This is a presentation for the May 10, 2022 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/presentation-wac-173-443-5-10-22

Presentation (WAC 173-443) 03/31/22

This is a presentation for the March 31, 2022 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/presentation-wac-173-443-03-31-22

Presentation (WAC 173-443) 02/03/22

This is a presentation for the 2/3/22 stakeholder meeting for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/presentation-wac-173-443-02-03-22

Cap-and-Invest Linkage Rulemaking Public Meeting

.pdf of July 10 public meeting presentation

https://ecology.wa.gov/presentation-wac-173-441-446-7-10-24

Cap-and-Invest Linkage and Environmental Justice

.pdf presentation for July 22 public meeting on Linkage and Environmental Justice

https://ecology.wa.gov/presentation-wac-173-441-446-7-22-24

Electricity Markets Rulemaking Proposed Rule Overview

.pdf presentation for Aug. 6 & 8 public meetings

https://ecology.wa.gov/presentation-wac-173-441-446-8-6-24-8-8-24

HFCs & other fluorinated greenhouse gases rulemaking

Slideshow presentation

https://ecology.wa.gov/presentation-wac-173-443-12-16-2024

Presentation (WAC 173-442) 1-27-25

This is a presentation for the January 27, 2025 public meeting for Chapter 173-443 WAC, Hydroflurocarbons rulemaking.

https://ecology.wa.gov/presentation-wac-173-443-1-27-25