Funding Sources


We are grateful to all the funding sources within government, industry and private entities that make our research possible. Clicking on a yellow agency name will open that agency’s website in a new window.




California Air Resources Board (ARB)


United States Environmental Protection Agency (U.S. EPA)


Strategic Environmental Research and Development Program (SERDP)


County of Riverside


South Coast Air Quality Management District (SCAQMD)


California Energy Commission


National Science Foundation


United States Department of Veterans’ Affairs (V.A.)




W.M. Keck Foundation


Health Effects Institute




Detroit Diesel Corporation


Cummins, Inc.




Ford Motor Company


Chevron Corporation


Toyota Motor Sales, U.S.A.


Mack Trucks


International Truck and Engine Corporation


Volvo Trucks