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.

See more about this collection...

Draft Timeline for Washington's Photovoltaic Module Stewardship Program

This document includes the draft timeline for Washington's photovoltaic module stewardship program.

https://ecology.wa.gov/draft-timeline-for-washington-s-photovoltaic-modul

Draft TDG short term modification administrative order

Draft version of the short term modification administrative order for total dissolved gas criteria

https://ecology.wa.gov/draft-tdg-short-term-modification-administrative-o

Public Notice for Draft Winery Permit

This public notice announces the draft winery general permit that is ready for review and comment. Find information on how to comment and where the public hearings are being held.

https://ecology.wa.gov/draft-winery-permit-public-notice

Draft Technical Standards (WAC 173-219) 02/16/17

Draft of Part IV Technical Standards for WAC 173-219 - February 16, 2017

https://ecology.wa.gov/draft-technical-standards-wac-173-219-02-16-17

Draft rule outline (WAC 173-444) 02/06/20

This is a draft rule outline for Chapter 173-444 WAC, Clean Energy Transformation.

https://ecology.wa.gov/draft-rule-outline-wac-173-444-02-06-20

Draft rule language other changes (WAC-173-400) 12/20/18

These are other changes to the draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (12/20/18)

https://ecology.wa.gov/draft-rule-language-other-changes-wac-173-400-12

Draft timeline (WAC 173-446) 6-8-22

This is a draft implementation timeline for Chapter 173-446 WAC, Climate Commitment Act Program. (6/8/22 version)

https://ecology.wa.gov/draft-timeline-wac-173-446-6-8-22

Draft timeline (WAC 173-446) 01/24/22

This is a draft implementation timeline for Chapter 173-446 WAC, Climate Commitment Act Program. (1/24/22 version)

https://ecology.wa.gov/draft-timeline-wac-173-446-01-24-22

Draft rule language other changes table (WAC-173-400) 12/20/18

This is a table showing other changes to the draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (12/20/18)

https://ecology.wa.gov/draft-rule-language-other-changes-table-wac-173-4

Draft rule language for WAC 173-415 (WAC 173-405; WAC 173-410; WAC 173-415) 08/14/18

This is the draft rule language for Chapter 173-415 WAC, Primary Aluminum Plants. (8/14/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-415-wac-173-4-1

Draft work practice standard (WAC 173-400) 08/08/18

This is the draft work practice standard for sulfur recovery unit during startup and shutdown (Chapter 173-400 WAC). Western States Petroleum Association proposed this work practice standard.

https://ecology.wa.gov/draft-work-practice-standard-wac-173-400-08-08-1

Draft rule language for Chapter 173-455 (WAC 173-455; 173-400) 2/28/18

This is draft rule language for Chapter 173-455 WAC, Air Quality Fee Rule. (2/28/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-455-wac-173-4-3

Draft rule language for WAC 173-455 (WAC 173-455; WAC 173-400) 06/27/17

This is draft rule language for Chapter 173-455 WAC, Air Quality Fee Rule; Chapter 173-400 WAC, General Regulations for Air Pollution Sources, 6/27/17 version.

https://ecology.wa.gov/draft-rule-language-for-wac-173-455-wac-173-4-2

Draft rule language for WAC 173-455 (WAC 173-455; WAC 173-400) 05/24/17

This is draft rule language for WAC 173-455 Air Quality Fee Rule.

https://ecology.wa.gov/draft-rule-language-for-wac-173-455-wac-173-4-1

Draft rule language for WAC 173-455 (WAC 173-455; WAC 173-400) 04/26/17

This is draft rule language for WAC 173-455 Air Quality Fee Rule

https://ecology.wa.gov/draft-rule-language-for-wac-173-455-wac-173-455;

Draft rule language for Chapters 173-455 and 173-400 WAC (WAC 173-455; 173-400) 2/07/18

This is draft rule language for Chapter 173-455 WAC, Air Quality Fee Rule and Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (2/7/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-455;400-wac-173-4

Draft workload analysis (WAC 173-455; WAC 173-400) 05/24/17

This is a draft analaysis of Ecology staff workload to manage the registration program for a meeting on 05/24/17 for for WAC 173-455 Air Quality Fee Rule; WAC 173-400 General Regulations for Air Pollution Sources.

https://ecology.wa.gov/meeting-handout-workload-analysis-wac-173-455;-wa

Draft Washington GREET model (WAC 173-424) 03/09/22

This spreadsheet is the draft Washington GREET model, fuel carbon intensity calculator for Clean Fuels Standards, March 9, 2022.

https://ecology.wa.gov/washington-greet-model-wac-173-424-03-09-22

Draft Source Test Manual (WAC 173-400; WAC 173-401) 4-9-24

This is the April 9, 2024 draft of the air quality Source Test Manual.

https://ecology.wa.gov/draft-source-test-manual-wac-173-400;-wac-173-401-4-9-24

Draft Source Test Manual (WAC 173-400; WAC 173-401) 4-23-24

This is the April 23, 2024 draft of the air quality Source Test Manual.

https://ecology.wa.gov/draft-source-test-manual-wac-173-400;-wac-173-401-4-23-24