CFR›Title 40›Chapter I›Part 60›40 CFR Part 60 Subpart LL Citation40 CFR Part 60 Subpart LLContainsSections 60.380–60.386CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart LL—Standards of Performance for Metallic Mineral Processing Plants Sections 60.380 § 60.380 Applicability and designation of affected facility. 60.381 § 60.381 Definitions. 60.382 § 60.382 Standard for particulate matter. 60.383 § 60.383 Reconstruction. 60.384 § 60.384 Monitoring of operations. 60.385 § 60.385 Recordkeeping and reporting requirements. 60.386 § 60.386 Test methods and procedures. Authority42 U.S.C. 7401 et seq.Source49 FR 6464, Feb. 21, 1984, unless otherwise noted. Previous La Subpart La—Standards of Performance for Secondary Lead Smelters for Which Construction, Reconstruction, or Modification Commenced After December 1, 2022 Next LLL Subpart LLL—Standards of Performance for SO<sub>2</sub> Emissions From Onshore Natural Gas Processing for Which Construction, Reconstruction, or Modification Commenced After January 20, 1984, and on or Before August 23, 2011