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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Baseline modeling inventory for Prevention of Significant Deterioration-permitted facilities

This is a spreadsheet of the baseline modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities.

https://ecology.wa.gov/201603prevsignificantdeteriorationbaseline

Non-Cereal BMP

This is the best management practice (BMP) for non-cereal grain, valid through June 30, 2025.

https://ecology.wa.gov/20240701noncerealbmp

Presentation about grants for electric school buses, June 25, 2024

This is a June 25, 2024 presentation for grants for electric school buses.

https://ecology.wa.gov/20240625eschoolbuspresentation

H5 Data Center Notice of Construction Application

This is the notice of construction application for H5 Data Center

https://ecology.wa.gov/20211110h5nocapp

HFCs & other fluorinated greenhouse gases rulemaking

Slideshow presentation

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

Proposal Notice - CR 102 form

CR 102 for WAC 173-446

https://ecology.wa.gov/rulemaking-proposal-wac-173-446-2-12-25

Non-orchard pile BMP

This is the best management practice (BMP) for non-orchard pile, valid through June 30, 2025.

https://ecology.wa.gov/20240701pilebmp

Cereal Grain BMP

This is the best management practice (BMP) for cereal grain, valid through June 30, 2025.

https://ecology.wa.gov/20240701cerealbmp

Workshop #8 Slides

Slides for Workshop #8

https://ecology.wa.gov/workshop-8-slides

Workshop #8 Slides_Tribal workshop

Slides for Workshop #8_Tribal workshop

https://ecology.wa.gov/workshop-8-slides_tribal-workshop

Underwater Noise Slides

Slides for the Underwater Noise Deep Dive Meeting

https://ecology.wa.gov/underwater-noise-slides

Presentation (WAC 173-448) 12-12-24

This is a presentation for the December 12, 2024 stakeholder meeting for Chapter 173-448 WAC, Air Quality in Overburdened Communities.

https://ecology.wa.gov/presentation-wac-173-448-12-12-24

Orchard crops BMP

This is the best management practice (BMP) for orchard crops, valid through June 30, 2025.

https://ecology.wa.gov/20240701orchardbmp

Grant Application for Air Quality in Overburdened Communities Grant: Frequently Asked Questions, October 15, 2024

This is the October 15, 2024 frequently asked questions (FAQ) about the grant application for Air Quality in Overburdened Communities Grant.

https://ecology.wa.gov/20241015overburdenedfaq

November 9, 2023 presentation about 2023-2025 electric school bus grant

This is the November 9, 2023 presentation about 2023-2025 electric school bus grant.

https://ecology.wa.gov/20231109evschoolbus

Technical Support Document for air quality general order for dry cleaners, May 20, 2006

This is the technical support document for the air quality general order for dry cleaners, May 20, 2006.

https://ecology.wa.gov/20060520drycleanerstsd

SEPA determination of nonsignificance

This document is a determination of nonsignificance (DNS) in which Ecology has determined the proposed biosolids general permit will not have a probable significant adverse impact on the environment.

https://ecology.wa.gov/sepa-determination-of-nonsignificance-26201b433614b0478c7dbc8114f0a4ba

Spot BMP

This is the best management practice (BMP) for spot burns, valid through June 30, 2025.

https://ecology.wa.gov/20240701spotbmp

Rulemaking Announcement (WAC 173-443) 10-2-24

CR 101 for WAC 173-443

https://ecology.wa.gov/rulemaking-announcement-wac-173-443-10-2-24