Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Draft rule language for WAC 173-405 (WAC 173-405; WAC 173-410; WAC 173-415) 07/17/18

This is draft rule language for Chapter 173-405 WAC, Kraft Pulping Mills. (7/17/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-405-wac-173-405;

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

This is draft rule language for Chapter 173-405 WAC, Kraft Pulping Mills. (8/14/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-405-wac-173-4-1

Draft rule language for WAC 173-410 (WAC 173-405; WAC 173-410; WAC 173-415) 07/17/18

This is draft rule language for Chapter 173-410 WAC, Sulfite Pulping Mills. (7/17/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-410-wac-173-405;

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

This is draft rule language for Chapter 173-410 WAC, Sulfite Pulping Mills. (8/14/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-410-wac-173-4-1

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 rule language for WAC 173-415 (WAC 173-405; WAC 173-410; WAC 173-415) 07/17/18

This is draft rule language for Chapter 173-415 WAC, Primary Aluminum Plants. (7/17/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-415-wac-173-405;

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

This is draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (2/28/18)

https://ecology.wa.gov/draft-rule-language-for-wac-173-400-wac-173-4-2

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

This is draft rule language for WAC 173-400 on 06/27/17 for WAC 173-455 Air Quality Fee Rule; WAC 173-400 General Regulations for Air Pollution Sources.

https://ecology.wa.gov/draft-rule-language-for-wac-173-400-wac-173-4-1

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

This is draft rule language on 5/24/17 for WAC 173-455 Air Quality Fee Rule

https://ecology.wa.gov/draft-rule-language-for-wac-173-400-05-24-17-1

Draft rule language for WAC 173-400 (WAC 173-455; WAC 173-400) 04/26/2017

This is draft rule language for WAC 173-400 General Regulations for Air Pollution Sources.

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

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 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