Front Matter -- Preface -- Contents -- Executive Summary -- 1 Introduction -- 2 Review of Risk-Based Methodologies -- 3 Strengths and Weaknesses of Risk-Based Methodologies -- 4 Uncertainty in Risk-Based Methodologies -- 5 Conclusions and Recommendations -- Appendix A Survey of State Risk-Based Decision Making -- Appendix B Acronyms -- Appendix C Biographical Sketches of Committee Members and Staff.