Under the Clean Air Act Section 211(o), the Environmental Protection Agency is required to determine the applicable volume of biomass-based diesel to be used in setting annual percentage standards under the renewable fuel standard program for years after 2012. We proposed an applicable volume requirement for 2013 of 1.28 billion gallons on July 1, 2011. In order to sufficiently evaluate the many comments on the proposal from stakeholders as well as to gather additional information to enhance our analysis, we did not finalize this volume requirement in the January 9, 2012, rulemaking setting the 2012 percentage standards. In this action we are finalizing an applicable volume of 1.28 billion gallons of biomass-based diesel for calendar year 2013.