[Code of Federal Regulations] [Title 40, Volume 27] [Revised as of July 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR355.10] [Page 428] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 355_EMERGENCY PLANNING AND NOTIFICATION--Table of Contents Sec. 355.10 Purpose. Sec. 355.10 Purpose. 355.20 Definitions. 355.30 Emergency planning. 355.40 Emergency release notification. 355.50 Penalties. Appendix A to Part 355--The List of Extremely Hazardous Substances and Their Threshold Planning Quantities (Alphabetical Order) Appendix B to Part 355--The List of Extremely Hazardous Substances and Their Threshold Planning Quantities (CAS Number Order) Authority: 42 U.S.C. 11002, 11004, and 11048. Source: 52 FR 13395, Apr. 22, 1987, unless otherwise noted. This regulation establishes the list of extremely hazardous substances, threshold planning quantities, and facility notification responsibilities necessary for the development and implementation of State and local emergency response plans.