Allied Waste Services is converting its entire 225-truck fleet in San Mateo County, California to locally sourced biodiesel fuel.

By converting from 80,000 gallons of petroleum diesel each month to clean-burning B20 biodiesel, Allied says it will reduce its local carbon footprint by more than 3.3 million pounds each yearA?AA¢AA¢aAA¬AA¢a?A¬?the equivalent of taking more than 315 cars off roads or providing energy to more than 650 homes each year.

This Thursday, California officials will join Allied executives to officially “send off” the company’s first dozen biodiesel-powered waste and recycling trucks.