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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 Announcement WAC 173-331 12/02/15

This is a rulemaking announcement (CR-101) for WAC 173-331 Vehicle Battery Recycling

https://ecology.wa.gov/rulemaking-announcement-wac-173-331-12-02-15

Rulemaking Draft Citation List (WAC 173-228) 10/04/17

This is the draft citation list for WAC 173-228 Vessel Sewage No Discharge Zones

https://ecology.wa.gov/rulemaking-draft-citation-list-wac-173-228-10-04

Rulemaking Announcement Withdrawal (WAC 508-14) 1/21/16

This is a withdrawal notice for the rulemaking announcement for WAC 508-14 Columbia Basin project - Ground Waters.

https://ecology.wa.gov/rulemaking-announcement-withdrawal-wac-508-14-1

Rulemaking Notice of Withdrawal (WAC 173-503A) 02/14/05

This is a rulemaking notice of withdrawal for WAC 173-503A Instream Resources Protection Program Lower and Upper Skagit Water Resources Inventory Area (WRIAs 3 and 4)

https://ecology.wa.gov/rulemaking-notice-of-withdrawal-wac-173-503a-02

Rulemaking Emergency Adoption Notice (WAC 173-167) 06/04/2019

This is an emergency rulemaking adoption (CR-103E) for WAC 173-167 Emergency Drought Funding.

https://ecology.wa.gov/rulemaking-order-wac-173-167-06-04-2019

Rulemaking Emergency Adoption Notice (WAC 173-446) 6-8-23

This is the first emergency rulemaking adoption notice (CR-103E) for WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-446-6

Rulemaking Order (CR-103)

This is the Order filed by the agency to adopt the rule

https://ecology.wa.gov/rulemaking-order-cr-103p-chapter-173-350-wac

First Rulemaking Notice No. 1 - STAG Nominations

You're invited to submit nominations for the Cleanup Rule Stakeholder & Tribal Advisory Group (STAG).

https://ecology.wa.gov/1strulemakingnotice01_stagjuly2019

Rulemaking Announcment 12-03 (WAC 173-201A) 9/13/12

This is a rulemaking announcement (CR-101) for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/rulemaking-announcment-12-03-wac-173-201a-9-13-1

Rulemaking Emergency Adoption Notice (WAC 173-443) 10/20/20

This is the fifth emergency rulemaking adoption notice (CR-103E) for WAC 173-443, Hydrofluorocarbons (HFCs).

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-4

Rulemaking Emergency Adoption Notice (WAC 173-443) 06/25/20

This is the fourth emergency rulemaking adoption (CR-103E) for WAC 173-443, Hydrofluorocarbons (HFCs).

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-3

Rulemaking Continuance (WAC 173-446) 6-3-22

This is a rulemaking continuance (CR-102) for Chapter 173-446 WAC, Climate Commitment Act Program.

https://ecology.wa.gov/rulemaking-continuance-wac-173-446-6-3-22

Rulemaking Emergency Adoption Notice (WAC 173-443) 03/16/20

This is the third emergency rulemaking adoption (CR-103E) for WAC 173-443, Hydrofluorocarbons (HFCs).

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-2

Rulemaking Emergency Adoption Notice (WAC 173-443) 11/21/19

This is the second emergency rulemaking adoption (CR-103E) for WAC 173-443, Hydrofluorocarbons (HFCs).

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-1

Rulemaking Emergency Adoption Notice (WAC 173-443) 07/30/19

This is the first emergency rulemaking adoption (CR-103E) for WAC 173-443, Hydrofluorocarbons (HFCs).

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-443

Rulemaking Announcement withdrawal (WAC 173-219) November 2006

This is a rulemaking withdrawal for WAC 173-219 Reclaimed Water

https://ecology.wa.gov/rulemaking-announcement-withdrawal-wac-173-219-0

CR-103 Adoption Notice

CR-103 Adoption Notice for WAC 173-167

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-167-07-24-2023

Rulemaking Emergency Adoption Notice (WAC 173-446) 9-7-23

This is the second emergency rulemaking adoption notice (CR-103E) for WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-446-9-7-23

Rulemaking Emergency Adoption Notice (WAC 173-446) 1-4-24

This is the third emergency rulemaking adoption notice (CR-103E) for WAC 173-446, Climate Commitment Act Program R

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-446-1-4-24

Rulemaking Emergency Adoption Notice (WAC 173-167) 08/14/24

[9:11 AM] Brooks, Barbara (ECY) This is an emergency rulemaking adoption (CR-103E) for WAC 173-167 Emergency Drought Funding

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-167-08-14-24