Under section 211(o) of the Clean Air Act, the Environmental Protection Agency is required to set the renewable fuel percentage standards each November for the following year. Today's action sets the annual percentage standards for cellulosic biofuel, biomass-based diesel, advanced biofuel, and renewable fuels that apply to all motor vehicle gasoline and diesel produced or imported in the year 2013. In general the standards are designed to ensure that the applicable national volumes of renewable fuel specified in the statute are used. For cellulosic biofuel, the statute specifies that EPA is to project the volume of production and must base the cellulosic biofuel standard on that projected volume if it is less than the applicable volume set forth in the Act. Today EPA is finalizing a cellulosic biofuel volume for 2013 that is below the applicable volume specified in the Act. EPA is also leaving the applicable volumes of advanced biofuel and total renewable fuel at the statutory levels for 2013 based on its assessment of the availability of renewable fuel for compliance purposes.