Department of Ecology News Release - October 10, 2012


Ecology updating state's 'clean cars' regulation, seeks comments

OLYMPIA – The public is invited to review and comment on proposed routine updates to Washington’s rule for low emission vehicle (“clean car”) standards. A public hearing is scheduled for Nov. 7, 2012, in Lacey.

In 2005, Gov. Chris Gregoire and the Washington Legislature adopted California’s vehicle emissions standards. Washington’s clean cars regulation requires that many new vehicles meet California’s standards to be registered for use in Washington. The controls limit emissions of greenhouse gases and common air pollutants, such as carbon monoxide and fine particulate matter.

The standards apply to 2009 and newer model year passenger cars, light-duty trucks, and medium-duty passenger vehicles (such as most vans and SUVs). They don’t apply to older vehicles already owned by Washington residents.

The Legislature requires Ecology to update Chapter 173-423 WAC (Low Emission Vehicles) when California changes its clean car regulations. This rule making will ensure that Washington stays consistent with the California standards and complies with federal and state laws.

The proposed rule changes:

You can find the proposed updates on Ecology’s air quality rules web page.

Ecology will accept comments through Nov. 14, 2012. Here’s how you can submit comments:

Ecology will review and consider all comments. The comments will be summarized in a document, along with Ecology’s responses. The proposed changes may be modified based on public comments. Ecology expects to adopt the updated rule by the end of 2012.


Media Contact: Seth Preston, Ecology communications manager, 360-407-6848; 360-584-5744 cell;

More information: