Through the Puget Sound Clean Air Agency’s Diesel Solutions program, launched in 2001, partners work to reduce diesel emissions by retrofitting vehicles with pollution control equipment, using cleaner fuels including ultra-low sulfur diesel (ULSD) and biodiesel, and promoting reduced idling.

Our Diesel Solutions program has enlisted local transit agencies, school districts, cities and counties, ports, ferries, cruise lines, garbage haulers and private businesses to voluntarily clean up their fleets and equipment. 

Even with new diesel fuel and engine standards going into effect in 2006 and 2007, diesel emissions will continue to be an air pollution concern for years to come.  That’s because many diesel engines can run, literally, for a million miles.  Pre-2007 engines could still be on the road for 10 to 15 years.

And recognizing that air knows no boundaries, we are also involved with various regional, national and international partners including the West Coast Collaborative, a public-private partnership working to reduce air pollution emissions from diesel sources along the entire West Coast, from Canada to Mexico.