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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Rulemaking adopted repeal language (WAC 173-04) 06/25/2021

This is adopted repeal rule language for WAC 173-04, Practice and Procedure

https://ecology.wa.gov/rulemaking-adopted-repeal-language-wac-173-04-06

SEPA CR-103

The Washington State Department of Ecology is adopting expedited rulemaking at the direction of the Washington legislature to amend Chapter 197-11 WAC, SEPA Rules. This rulemaking will incorporate amendments and new language in Chapter 43.21C RCW, State Environmental Policy Act (SEPA) and amends other sections of the rule to align with legislative directives.

https://ecology.wa.gov/sepa-cr-103

Rulemaking adopted repeal language strikeout version (WAC 173-04) 06/25/2021

Rulemaking adopted repeal language strikeout (WAC 173-04) 06/25/2021

https://ecology.wa.gov/rulemaking-adopted-repeal-language-strikeout-wac

Quality Assurance Project Plan checklist

The checklist provides a list of all the required elements for the plan.

https://ecology.wa.gov/qapp-review-checklist

Quality Assurance Project Plan template

The template includes information and instructions needed for the preparation of a QA Project Plan.

https://ecology.wa.gov/qapp-template

Rulemaking proposed repeal language (WAC 173-04) 02/04/21

This is proposed rule language to be repealed for WAC 173-04, Practice and Procedure

https://ecology.wa.gov/rulemaking-proposed-repeal-language-wac-173-04-0

SEPA CR-105

Ecology is conducting expedited rulemaking at the direction of the Washington legislature to amend Chapter 197-11 WAC, SEPA Rules.

https://ecology.wa.gov/sepa-cr-105

SEPA Determination of Nonsignificance

Chapter 246, 2022 Session Law (Substitute Senate Bill 5818) of the Washington State Legislature mandated the Department of Ecology to complete expedited rulemaking by Dec. 31, 2022.

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

Rulemaking Repeal Adoption (WAC 173-04) 06/25/2021

This is the rulemaking Repeal Adoption CR-103 form for Chapter 173-04 WAC Practice and Procedure 06/25/2021

https://ecology.wa.gov/rulemaking-repeal-adoption-wac-173-04-06-25-2021

Rulemaking Adoption Notice (WAC 173-03) 11/15/17

This is a rulemaking adoption (CR-103) for WAC 173-03 Public Records.

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-03-11-15-17

Rulemaking Announcement (WAC 173-03) 2/28/17

This is a rulemaking announcement (CR-101) for WAC 173-03 Public Records

https://ecology.wa.gov/rulemaking-announcement-wac-173-03-2-28-17

Rulemaking Repeal Proposal (WAC 173-04) 02/04/2021

This is a rulemaking repeal proposal (CR-102) for WAC 173-04, Practice and Procedure

https://ecology.wa.gov/rulemaking-repeal-proposal-wac-173-04-02-04-2021

SEPA Environmental Checklist

The checklist guidance is intended to help applicants complete Section A of the SEPA (State Environmental Policy Act) environmental checklist.

https://ecology.wa.gov/sepa-environmental-checklist

SEPA OTS-4081.1 for filing

Under RCW 43.21C.440, GMA counties/cities may designate a planned action.

https://ecology.wa.gov/sepa-ots-4081-1-for-filing

Rulemaking Proposal (WAC 173-03) 9/15/17

This is a rulemaking proposal (CR 102) for Public Records

https://ecology.wa.gov/rulemaking-proposal-wac-173-03-9-15-17

Rulemaking Proposal Continuance (WAC 173-03) 10/03/17

This is a rulemaking proposal continuance for WAC 173-03 Public Records

https://ecology.wa.gov/rulemaking-proposal-continuance-wac-173-03-10-03

Rulemaking proposed language (WAC 173-50) 4/19/23

This is proposed rule language for WAC 173-50.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-50-4-19-23

Rulemaking proposal language (WAC 173-03) 9/15/17

This is proposed rule language for WAC 173-03 Public Records

https://ecology.wa.gov/rulemaking-proposal-language-wac-173-03-9-15-17

SEA Port Susan Bay Restoration 2023

Drone project checklist for SEA PSB restoration 2023 and ongoing

https://ecology.wa.gov/sea-port-susan-bay-restoration-2023

Project Checklist SEA WCC South Prairie Creek 2023

UAS project checklist

https://ecology.wa.gov/sea-wcc-south-prairie-creek-2023