CARB Board Member Wants Upcoming On-Road Diesel Rule to Be Reviewed

The Fresno Bee reported on Wednesday that board member John Tellles of the California Air Resources Board is pushing for the looming on-road diesel emissions rule aimed at trucks and buses to be put on hold pending an independent review.

Apparently one of the researchers who contributed health research that the original 2008 ruling was based on, falsified his credentials. Hien Tran originally stated he had earned a doctorate from UC Berkeley. It was later uncovered that his degree is actually from an unaccredited online institution.

The regulation to go into effect in 2010 would require diesel on-road vehicles operating in California to reduce emissions of particulate matter (PM). This often requires retrofitting with a particulate filter that has been CARB verified specifically for use with on-road vehicles.