CARB releases proposed biodiesel policy; seeks comments

| 6/6/2006

The California Air Resources Board is accepting comments on a suggested biodiesel policy that could become the standard throughout the state.

The proposal, which was presented at a CARB workshop May 24, would consider B20 and below blends as the standards for California diesel fuel.

However, the policy does not give approval to higher blends of biodiesel, nor does it address potential increases in NOx gases, which are reported byproducts of some biodiesel fuels, according to information on CARB’s Web site.

The fuel would be acceptable for on- or off-road diesel vehicles and engines, provided it meets the following conditions:

  • The biodiesel portion of the blend contains less than 15 ppm of sulfur;
  • The diesel fuel portion complies with current CARB diesel fuel regulations; and
  • The resulting mix contains no more than 20 percent biodiesel by volume.

Currently, B100 fuels, which are 100 percent biodiesel, and fuels that contain 50 percent or greater biodiesel are exempt from CARB standards. However, blends greater than 20 percent and less than 50 percent are not prohibited, but are not currently recommended, for use in the state, according to a CARB press release.

Written comments regarding the proposal must be received by June 26. They can be e-mailed to Robert Okamoto at Mail comments to:

Robert Okamoto
Industrial Section
Air Resources Board
P.O. Box 2815
Sacramento, CA 95814