[Code of Federal Regulations] [Title 40, Volume 24] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR257.4] [Page 379] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 257_CRITERIA FOR CLASSIFICATION OF SOLID WASTE DISPOSAL FACILITIES AND PRACTICES--Table of Contents Subpart A_Classification of Solid Waste Disposal Facilities and Practices Sec. 257.4 Effective date. These criteria become effective October 15, 1979.