FrontMatter -- Preface -- Acknowledgments -- Contents -- List of Tables, Figures, and Boxes -- Summary -- 1 Introduction -- 2 Biofuel Supply Chain -- 3 Projected Supply of Cellulosic Biomass -- 4 The Economics and Economic Effects of Biofuel Production -- 5 Environmental Effects and Tradeoffs of Biofuels -- 6 Barriers to Achieving RFS2 -- APPENDIXES -- Appendix A: Statement of Task -- Appendix B: Biographical Sketches -- Appendix C: Presentations to the Committee -- Appendix D: Glossary -- Appendix E: Select Acronyms and Abbreviations -- Appendix F: Conversion Factors -- Appendix G: Petroleum-Based Fuel Economics -- Appendix H: Ethanol Biorefineries in Operation or Under Construction in the United States in 2010 -- Appendix I: Biodiesel Refineries in the United States in 2010 -- Appendix J: Economic Models Used to Assess the Effects of Biofuel Production in the United States -- Appendix K: BioBreak Model: Assumptions for Willingness to Accept -- Appendix L: BioBreak Model Assumptions -- Appendix M: Summary of Literature Estimates -- Appendix N: Blend Wall -- Appendix O: Safety and Quality of Biofuel Coproducts as Animal Feed.