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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Greenhouse Gas Assessment for Projects (GAP) Rulemaking June 2020 Presentation

Public webinar presentation given 6-25-20

https://ecology.wa.gov/6-25-20-presentation

Greenhouse Gas Assessment for Projects (GAP) Rulemaking June 2020 Meeting Summary

Meeting summary for 6-25-20 public rulemaking webinar

https://ecology.wa.gov/6-25-20-meeting-summary

Greenhouse Gas Assessment for Projects (GAP) Rulemaking July 2020 Presentation

Public webinar presentation given 7-23-20

https://ecology.wa.gov/7-23-20-presentation

Greenhouse Gas Assessment for Projects (GAP) Rulemaking July 2020 Meeting Summary

Meeting summary for 7-23-20 public rulemaking webinar

https://ecology.wa.gov/7-23-20-meeting-summary

Greenhouse Gas Assessment for Projects (GAP) Rulemaking August 2020 Presentation

Public webinar presentation given 8-27-20

https://ecology.wa.gov/8-27-20-presentation

Greenhouse Gas Assessment for Projects (GAP) Rulemaking August 2020 Meeting Summary

Meeting summary for 8-27-20 public rulemaking webinar

https://ecology.wa.gov/8-27-20-meeting-summary

Adopted emergency rule language (WAC 173-446) 9-7-23

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

https://ecology.wa.gov/adopted-emergency-rule-language-wac-173-446-9-7-23

Agenda (WAC 173-441) 10-12-23

This is the agenda for the October 12, 2023 meeting to provide feedback on draft rule language for the Electricity Markets rulemaking.

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

Adopted emergency rule language (WAC 173-446) 1-4-24

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

https://ecology.wa.gov/adopted-emergency-rule-language-wac-173-446-1-4-24

Cap-and-Invest Key Market Events Timeline 2024

Static .pdf timeline of key cap-and-invest market events for 2024. Companion to the interactive timeline on the Auctions and Market webpage.

https://ecology.wa.gov/20240110capandinvestkeymarketeventstimeline2024

Adopted rule language (WAC 173-446) 2-21-24

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

https://ecology.wa.gov/adopted-rule-language-wac-173-446-2-21-24

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

This is the agenda for the February 22, 2024 public meeting for the Clean Fuel Standard rulemaking.

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

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

This is the agenda for the February 28, 2024 public meeting for the Clean Fuel Standard rulemaking.

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

State Agency Reporting Instructions

.pdf instructions for State Agencies reporting GHG emissions using the State Agency GHG Reporting tool

https://ecology.wa.gov/2024stateagencyreportinginstruction-ghgreporting

State Agency Greenhouse Gas Emissions Calculator

Excel sheet used to determine state agencies annual greenhouse gas emissions

https://ecology.wa.gov/2024stateagencyghgemissionscalculator-ghgreportingtool

Adopted rule language (WAC 173-446B)

Adopted rule language WAC 173-446B

https://ecology.wa.gov/adopted-rule-language-wac-173-446b-10-08-24

Adopted rule language (WAC 173-441)

Adopted rule language WAC 173-441

https://ecology.wa.gov/adopted-rule-language-wac-173-441-12-03-24

Adopted rule language (WAC 173-446)

Adopted rule language WAC 173-446

https://ecology.wa.gov/adopted-rule-language-wac-173-446-12-03-24

Fuel Exemptions Workgroup Meeting Agendas and Summaries

Agendas and summaries from the fuel exemption workgroup meeting

https://ecology.wa.gov/fuel_exemptions_workgroup

Public comments on Cap-and-Invest linkage (Jan. 31-May 15, 2023)

Document with all comments received about linkage from Jan. 31 to May 15, 2023

https://ecology.wa.gov/linkage_comments_spring2023