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.
Inslee statement on Clean Air Rule decision
Statement by Gov. Jay Inslee on 1-16-20 related to the Supreme Court ruling on the Clean Air Rule.
https://ecology.wa.gov/inslee-statement-on-clean-air-rule-decision
VW state settlement allocations
A pie chart showing how the VW state settlement funds are being used.
https://ecology.wa.gov/20200408-vwallocationscircle-alt
NOx reductions alt text document
Arrow showing past & current NOx reductions in comparison to our goal and future reductions using VW settlement funds
https://ecology.wa.gov/20200407-noxreductionsarrow-alt
CFS Draft Rule - Changes Summary
Summary of proposed changes to WAC 173-424
https://ecology.wa.gov/draft-rule-changes-summary-wac-173-424-8-30-24
Draft rule language (173-424-800 - 173-424-850)
Summary of proposed changes to WAC 173-424-800
https://ecology.wa.gov/draft-rule-language-173-424-800-173-424-850
Air quality studies
Information about air quality studies we conduct.
https://ecology.wa.gov/research-data/scientific-reports/air-quality-studies
Electric Fire Truck Grant FAQs
FAQ for electric firetruck grants
https://ecology.wa.gov/electricfiretruckgrantfaq
Focus on: Climate change and health equity
A joint Ecology and Health focus sheet exploring the health and community impacts of climate change.
https://ecology.wa.gov/201210-climate-justice-focus-sheet
Publication: Hydrofluorocarbons Adopted Rule Language – Informational Guidebook
This guidebook is supplemental and is intended to provide general information to stakeholders about the Chapter 173-443 WAC Hydrofluorocarbons (HFCs) and Other Fluorinated Greenhouse Gases rule language and how it may affect them.
https://ecology.wa.gov/publication-hydrofluorocarbons-adopted-rule-language-informational-guidebook
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
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
Proposal Notice - CR 102 form
CR 102 for WAC 173-441, 446
https://ecology.wa.gov/rulemaking-proposal-wac-173-441;-wac-173-446-6-27-24
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
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
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
Draft Climate Resilience Engagement Plan
This is the Draft Climate Resilience Engagement Plan.
https://ecology.wa.gov/climate-resilience-strategy-draft
Survey Reference Map
Climate resilience strategy survey map by county.
https://ecology.wa.gov/survey-reference-map
Climate Resilience Strategy Engagement Plan
This Engagement Plan supports Ecology in our efforts to develop an updated statewide Climate Resilience Strategy.
https://ecology.wa.gov/climate-resilience-strategy-engagement-plan-final
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
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