CFR›Title 40›Chapter I›Part 60›40 CFR Part 60 Subpart AAb Citation40 CFR Part 60 Subpart AAbContainsSections 60.270b–60.276bCorpusDaily eCFRDisplayed edition2026-06-29Last updated2026-06-29 Subpart AAb—Standards of Performance for Steel Plants: Electric Arc Furnaces and Argon-Oxygen Decarbonization Vessels Constructed After May 16, 2022 Sections 60.270b § 60.270b Applicability and designation of affected facility. 60.271b § 60.271b Definitions. 60.272b § 60.272b Standard for particulate matter. 60.273b § 60.273b Emission monitoring. 60.274b § 60.274b Monitoring of operations. 60.275b § 60.275b Test methods and procedures. 60.276b § 60.276b Recordkeeping and reporting requirements. Authority42 U.S.C. 7401 et seq.Source88 FR 58487, Aug. 25, 2023, unless otherwise noted. Previous AAAA Subpart AAAA—Standards of Performance for Small Municipal Waste Combustion Units for Which Construction is Commenced After August 30, 1999 or for Which Modification or Reconstruction is Commenced After June 6, 2001 Next Appendix A-1 to Part 60 Appendix A-1 to Part 60—Test Methods 1 through 2F
Subpart AAb—Standards of Performance for Steel Plants: Electric Arc Furnaces and Argon-Oxygen Decarbonization Vessels Constructed After May 16, 2022