The Renewable Fuels Association sent a letter January 17 to California Air Resources Board Chairman Mary Nichols encouraging it to revise the carbon intensity values assigned to corn ethanol under the state’s low-carbon fuel standard. Most Midwestern ethanol will not be a viable alternative to help fuel producers meet the higher carbon intensity standards for 2013 and 2013 without the revisions. The board has been silent on the issue of updating direct and indirect ethanol carbon intensity values.