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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TransAlta Best Available Retrofit Technology (BART) order, 6/18/10

This is the TransAlta Best Available Retrofit Technology (BART) order, 6/18/10.

https://ecology.wa.gov/tasignedbartorder

May 25, 2010 TransAlta agreement

This is the May 25, 2010 agreement between Ecology and TransAlta for the TransAlta power plant.

https://ecology.wa.gov/transaltasignedagreement

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

Whitman County Agricultural Burn Zone Map

Map for agricultural burn zones in Whitman County

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

Air quality general order for asphalt plants

This is the air quality general order for asphalt plants.

https://ecology.wa.gov/20110418goasphaltplants

Technical support document for the air quality general order for asphalt plants

This is the technical support document for the air quality general order for asphalt plants.

https://ecology.wa.gov/20110418asphaltplantstsd

Washington Department of Information Services Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Second Tier Review) for Washington Department of Information Services Data Center, 9/16/10

https://ecology.wa.gov/finaldistier2-09-16-2010

Blackrock-Sabey Data Centers - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Second Tier Review) for Blackrock and Sabey Data Centers, 10/5/10

https://ecology.wa.gov/tier2-tsd-blackrock-sabey-cl100510

Dell Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Dell Data Center, 6/10/11

https://ecology.wa.gov/delltier2-approvalletter

Dell Data Center - Technical Support Document for Notice of Construction permit

Technical Support Document for Notice of Construction permit for Dell Data Center, 6/9/11

https://ecology.wa.gov/dellquincy-noc-tsd-final

Quincy Air Quality Maps

Maps of Quincy air quality before and after Microsoft Columbia Data Center permit (from 12/13/10 community forum), 12/10

https://ecology.wa.gov/maps-of-quincy-air-quality

Microsoft Columbia Data Center - Notice of Construction permit

Notice of Construction permit for Microsoft Columbia Data Center, 10/26/10

https://ecology.wa.gov/msn-order10aq-e374

Microsoft Columbia Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for the Health Impact Assessment (Third Tier Review) for Microsoft Columbia Data Center, 8/20/10

https://ecology.wa.gov/ms-tier3-doc

Microsoft Columbia Data Center - Technical Support Document for Notice of Construction permit

Technical Support Document for Notice of Construction permit for Microsoft Columbia Data Center, 8/12/10

https://ecology.wa.gov/msnexpand2010-tsd-8-4

Yahoo Data Center - Notice of Construction permit

Notice of Construction permit for Yahoo Data Center, 3/28/11

https://ecology.wa.gov/yahoo-ord-11aq-e399

Yahoo Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Third Tier Review) for Yahoo Data Center, 2/8/11

https://ecology.wa.gov/yahoo-tier3-tsd-2-8