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.
Inslee statement on Clean Air Rule decision
Statement by Gov. Jay Inslee on 1-16-20 related to the Supreme Court ruling on the Clean Air Rule.
https://ecology.wa.gov/inslee-statement-on-clean-air-rule-decision
Washington Department of Commerce Clean Fuel Supply Forecast Report, September 23, 2022
This is the fuel supply forecast report written for the Washington Department of Commerce about the Clean Fuel Standard.
https://ecology.wa.gov/20220923cleanfuelforecastrpt
VW state settlement allocations
A pie chart showing how the VW state settlement funds are being used.
https://ecology.wa.gov/20200408-vwallocationscircle-alt
Washington Department of Commerce Clean Fuel Supply Forecast spreadsheet, September 23, 2022
This is the September 23, 2022 fuel supply forecast spreadsheet prepared for the Washington Department of Commerce about the Clean Fuel Standard.
https://ecology.wa.gov/20220923cleanfuelforecast
July 1, 2022 cover letter to Clean Fuel Standard Cost-Benefit Analysis Report
This is a July 1, 2022 cover letter to the independent report of the cost-benefit analysis of the Clean Fuel Standard.
https://ecology.wa.gov/20220601cfscbacover
NOx reductions alt text document
Arrow showing past & current NOx reductions in comparison to our goal and future reductions using VW settlement funds
https://ecology.wa.gov/20200407-noxreductionsarrow-alt
Clean Fuel Standard Cost-Benefit Analysis Report
This is an independent report of the cost-benefit analysis of the Clean Fuel Standard.
https://ecology.wa.gov/20220512cfscba
2022 Greenhouse Gas Reporting Instructions
Instructions for state agencies on how to report their greenhouse gas emissions
https://ecology.wa.gov/20220110-ghg-reporting-instructions
Washington Mandatory Greenhouse Gas Reporting Program - Reported Emissions for 2012-2015
Certain large facilities are required to submit their greenhouse gas emissions to Ecology. This is the report of those emissions from 2012-2015.
https://ecology.wa.gov/wa-ghg-reporting-data-2012-2015
May 5, 2022 list of HFC manufacturers
This is the May 5, 2022 list of manufacturers that reported the status of their use of restricted hydrofluorocarbons (HFCs).
https://ecology.wa.gov/2022hfcmanufacturers
Transportation Fuel Supplier Greenhouse Gas Emission Calculator
This tool helps transportation fuel suppliers calculate their greenhouse gas emissions.
https://ecology.wa.gov/transportationfuelsuppliertool
DES Fleet Fuel Use by Permanently Leased Equipment and Daily Trip Rentals
Calculator for state agencies to determine their DES fuel usage.
https://ecology.wa.gov/2022-des-fleet-ghg-report
2020 State Agency Greenhouse Gas Calculator
Calculator for state agencies to determine their greenhouse gas emissions
https://ecology.wa.gov/2020-state-agency-greenhouse-gas-calculator
Washington 2018 Greenhouse Gas Contributors by Percent
Pie chart showing 2018 Washington greenhouse gas contributors by percent
https://ecology.wa.gov/20201228-ghgpiechart-2018-alt
2023-GHGreport-Instructions
Instructions for completing your 2023 GHG report
https://ecology.wa.gov/2023-state-agency-ghg-report-instructions
Tracking Washington Greenhouse Gases
Chart showing past emissions and future greenhouse gas limits set by the Legislature.
https://ecology.wa.gov/20201221-ghg-actual-projections_alt
State Agency Greenhouse Gas Emissions Calculator
State agencies use this calculator to determine and report their greenhouse gas emissions.
https://ecology.wa.gov/stateagencyghgcalculator
2017 Greenhouse gas emissions by sector
Alt text for greenhouse gas emission by sector graphic
https://ecology.wa.gov/20200407-2017ghgemissionsbysector-alt
Washington Total Annual Emissions
bar chart shoring Washington greenhouse gases the past decade
https://ecology.wa.gov/2011-2018_ghg-barchart-alt
Washington State Agencies Required to Report their Greenhouse Gas Emissions to Ecology
Some Washington state agencies are required to report their greenhouse gas emissions to Ecology. This is a list of those that are required.
https://ecology.wa.gov/stateagenciesrequiredtoreportghg
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