Regulations last checked for updates: May 02, 2025

Title 40 - Protection of Environment last revised: Nov 02, 2025
All TitlesTitle 40Chapter IPart 257Subpart A - Subpart A—Classification of Solid Waste Disposal Facilities and Practices
View all text of Subpart A [§ 257.1 - § 257.4]
§ 257.4 - Effective date.

These criteria become effective October 15, 1979.

authority: 42 U.S.C. 6907(a)(3), 6912(a)(1), 6927, 6944, 6945(a) and (d); 33 U.S.C. 1345(d) and (e)
cite as: 40 CFR 257.4
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