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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Fireplaces Certified in Washington

List of fireplaces that meet Washington standards

https://ecology.wa.gov/wood-fireplaces

Vantage Data Center notice of construction (NOC) permit and technical support document

This is the August 2023 air quality notice of construction permit (approval order) and technical support document for Vantage Data Center.

https://ecology.wa.gov/20230829vantagenocpermit

H5 Data Center notice of construction (NOC) permit

This is the 2022 air quality notice of construction permit (approval order) for H5 Data Center.

https://ecology.wa.gov/20220309h5nocpermit

H5 Data Center Preliminary Determination

This is the draft preliminary determination for H5 Data Center

https://ecology.wa.gov/20211110h5draftpreldet

H5 Data Center Notice of Construction Application

This is the notice of construction application for H5 Data Center

https://ecology.wa.gov/20211110h5nocapp

H5 Data Center Health Impact Assessment Report

This is the Health Impact Assessment Report for H5 Data Center

https://ecology.wa.gov/20211110h5healthimpactassessment

H5 Data Center Notice of Construction Application DOE

This is the notice of construction application for H5 Data Center from Ecology

https://ecology.wa.gov/20211110h5nocappdoe

H5 Data Center Health Impact Assessment Recommendation

This is the Health Impact Assessment Recommendation for H5 Data Center

https://ecology.wa.gov/20211110h5tier2hiarec

H5 Data Center Tier 2 Letter

This is the Tier 2 letter for H5 Data Center

https://ecology.wa.gov/20211110h5tier2ltr

H5 Data Center Technical Support Document

This is the Technical Support Document for H5 Data Center

https://ecology.wa.gov/2021h5tsd

H5 Data Centers notice of construction (NOC) application and supporting information

This is the air quality notice of construction application and supporting information for H5 Data Centers in Grant County, near Quincy.

https://ecology.wa.gov/20211110h5revnocapp

Rulemaking Proposal (WAC 173-400; WAC 173-401) 9-18-24

This is a rulemaking proposal (CR-102) for Chapter 173-400 WAC, General Regulations for Air Pollution Sources and Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/rulemaking-proposal-wac-173-400;-wac-173-401-9-18-24

Proposed Source Test Manual (WAC 173-400; WAC 173-401) 9-18-24

This is the proposed Source Test Manual, September 18, 2024.

https://ecology.wa.gov/proposed-source-test-manual-wac-173-400;-wac-173-401-9-18-24

Masonry heaters that meet Washington standards, October 10, 2016

This is the October 10, 2016 list of masonry heaters that meet Washington standards.

https://ecology.wa.gov/20161010masonryheaters

Exceptional Event Demonstration for the August 14, 2015 PM10 Exceedence in Kennewick

report demonstrating that high winds on August 14, 2015 overwhelmed agriculture erosion controls and contributed to elevated levels of particle pollution in Kennewick.

https://ecology.wa.gov/20150814-exceptional-event-demonstration

Columbia County Agricultural Burn Zone Map

Map for agricultural burn zones in Columbia County

https://ecology.wa.gov/columbia-ag-burn-zone-map

Eastern Washington Agricultural Burn Zone Map

Map for agricultural burn zones in Eastern Washington

https://ecology.wa.gov/eastern-washington-agricultural-burn-zone-map

Franklin County Agricultural Burn Zone Map

Map for agricultural burn zones in Franklin County

https://ecology.wa.gov/franklin-ag-burn-zone-map

Grant County Agricultural Burn Zone Map

Map for agricultural burn zones in Grant County

https://ecology.wa.gov/grant-ag-burn-zone-map

Walla Walla County Agricultural Burn Zone Map

Map for agricultural burn zones in Walla Walla County

https://ecology.wa.gov/walla-walla-ag-burn-zone-map