Research & Data

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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 Proposal (WAC 173-526) 04/19/10

This is a rulemaking proposal (CR-102) for WAC 173-526 Chapter 173-526 WAC - Cowlitz Water Resources Management Program - WRIA 26

https://ecology.wa.gov/rulemaking-proposal-wac-173-526-04-19-10

Rulemaking proposal (WAC 173-525)

This is a rulemaking proposal (CR-102) for WAC 173-525 Grays-Elochoman Instream Resources Protection and Water Management Program

https://ecology.wa.gov/rulemaking-proposal-wac-173-525

Rulemaking Proposal (WAC 173-430) 12/04/18

This is a rulemaking proposal (CR-102 form) for WAC 173-430, Agricultural Burning.

https://ecology.wa.gov/rulemaking-proposal-wac-173-430-12-04-18

Rulemaking Proposal (WAC 173-50) 4/19/23

This is a rulemaking proposal (CR-102) for WAC 173- 50, Accreditation of Environmental Laboratories.

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

Rulemaking Proposal (WAC 173-446A) 12/22/21

This is a rulemaking proposal (CR-102) for Chapter 173-446A WAC, Criteria for Emissions-Intensive, Trade-Exposed Industries.

https://ecology.wa.gov/rulemaking-proposal-wac-173-446a-12-22-21

Rulemaking Proposal (WAC 173-441) 10/06/21

This is a rulemaking proposal (CR-102) for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/rulemaking-proposal-wac-173-441-10-06-21

Rulemaking proposal (WAC 173-442; WAC 173-441) 05/31/16

This is a rulemaking proposal (CR-102) for WAC 173-442 Clean Air Rule; WAC 173-441 Reporting of Emissions of Greenhouse Gases

https://ecology.wa.gov/rulemaking-announcement-wac-173-442;-wac-173-1

Rulemaking Proposal (WAC 173-557) 09/17/14

This is a rulemaking proposal (CR-102) for WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/rulemaking-proposal-wac-173-557-09-17-14

Rulemaking Proposal (WAC 173-455) 09-07-22

This is a rulemaking proposal (CR-102) for Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-455-09-07-22

Rulemaking Proposal (WAC 173-444) 09/02/20

This is a rulemaking proposal (CR-102) for Chapter 173-444 WAC, Chapter 173-444 WAC, Clean Energy Transformation Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-444-09-02-20

Rulemaking Proposal (WAC 173-446) 5-16-22

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

https://ecology.wa.gov/rulemaking-proposal-wac-173-446-5-16-22

Rulemaking Proposal (WAC 173-443) 06/16/20

This is a rulemaking proposal (CR-102) for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/rulemaking-proposal-wac-173-443-06-16-20

Rulemaking Proposal (WAC 173-455; WAC 173-400) 06/20/18

This is a rulemaking proposal (CR-102 form) for WAC 173-455, Air Quality Fee Rule; WAC 173-400, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposal-wac-173-455;-wac-173-400-06

Rulemaking Proposal (WAC 173-460) 06/04/19

This is a rulemaking proposal (CR-102) for Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/rulemaking-proposal-wac-173-460-06-04-19

Rulemaking Proposal (WAC 173-443; WAC 173-455) 7-13-23

This is a rulemaking proposal (CR-102) for Chapter 173-443 WAC, Hydrofluorocarbons (HFCs) and Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-443;-wac-173-455-7-13-23

Rulemaking Proposal (WAC 173-443; WAC 173-455) 8-31-23

This is a rulemaking continuance (CR-102) for Chapter 173-443 WAC, Hydrofluorocarbons (HFCs) and Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-443;-wac-173-455-8-31-23

Rulemaking Proposal (WAC 173-446) 9-7-23

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

https://ecology.wa.gov/rulemaking-proposal-wac-173-446-9-7-23

Rulemaking Proposal (WAC 173-446B) 4-23-24

This is a rulemaking proposal (CR-102) for Chapter 173-446B WAC, Climate Commitment Act Funds Reporting.

https://ecology.wa.gov/rulemaking-proposal-wac-173-446b-4-23-24

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

Proposal Notice - CR 102 form

CR 102 for WAC 173-446

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