UPDATE: Ecology's new website will be live on Monday morning! Our official web address will be https://ecology.wa.gov

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Air Quality Program


FAQS and information center

Questions and answers from Nov. 28-29 events

Questions we received from our Nov. 28 webinar and Nov. 29 Facebook Town Hall are now answered and available online.


Volkswagen federal settlement summary

Washington is eligible to receive $112.7 million from the Volkswagen federal Settlement. VW violated the Clean Air Act by manufacturing diesel vehicles with software installed that cheated emissions testing by only turning on when the vehicle was being tested. Nitrogen oxides contribute to the formation of harmful smog and soot. Exposure to these pollutants has been linked to a number of respiratory and cardiovascular health effects as well as premature death.

Washington must submit a mitigation plan to the trustee prior to requesting mitigation funds. The settlement agreement has specific requirements on how the money can be spent. Beneficiaries are also directed to choose projects that benefit communities that have been disproportionately affected by nitrogen oxides emissions.


Maps of registered vehicles and areas affected by nitrogen oxides emissions

The first map below identifies where the affected vehicles are registered in the state. Ecology estimates about 87% of the affected vehicles are registered in thirteen counties. The remaining 13% are dispersed throughout the remaining 26 counties. The second map includes estimated nitrogen oxides emissions from on-road vehicles (e.g. cars, trucks, semi-trucks, etc.), non-road vehicles/equipment (e.g. for construction, agriculture, airports, etc.), marine vessels and pleasure craft, fuel use by various industries, and railroad equipment.





We asked how you think the $112.7 million should be invested

Ecology held a survey that closed on May 31, 2017 to ask which categories outlined in the court consent decree are most important to you. The decree outlines specific ways the funds can be used. Below are the results of that survey, in order of importance.




Revised goals, principles, and priorities

The "revised" goals, principles, and priorities are now posted online based on feedback we received from your participation in our March 23, 2017 survey below.




Video gallery



November 28, 2017 Volkswagen Federal Settlement Webinar

April 17, 2017 Eligible Categories Webinar

March 23, 2017 Goals, Principles, and Priorities Survey Results

Feb. 2, 2017 Informative Webinar


Additional information

View the Washington and Oregon joint ZEV investment proposal submitted to Electrify America.
You may also view and download the VW federal settlement fact sheet to the right.


Subscribe to our Volkswagen listserv

Ecology is dedicated to keeping you informed as the settlement progresses.
Sign up for our listserv to receive important updates, notices of stakeholder meetings and webinars via email.

For questions about the settlement, please email us.


For more information, visit:

Volkswagen partial Consent Decree
VW/Audi diesel emissions settlement program
VW Clean Air Act partial settlement
Notice of filing of trust agreements


Ecology contacts