{"data":{"id":"us/40-cfr-60.121a","jurisdiction":"us","citation":"40 CFR 60.121a","heading":"a Definitions.","body":"As used in this subpart, all terms not defined herein shall have the meaning given them in the Act and in subpart A of this part.\nBlast furnace means any furnace used to recover metal from slag.\nLead means elemental lead or alloys in which the predominant component is lead.\nProcess fugitive emissions source means a source of particulate matter (PM) emissions at a secondary lead smelter that is associated with lead smelting or refining including, but not limited to, smelting furnace charging points; smelting furnace lead and slag taps; pot and refining furnaces; and casting kettles.\nReverberatory furnace includes the following types of reverberatory furnaces: stationary, rotating, rocking, and tilting.\nSecondary lead smelter means any facility producing lead from a lead-bearing scrap material by smelting to the metallic form.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 60—STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES","Subpart La—Standards of Performance for Secondary Lead Smelters for Which Construction, Reconstruction, or Modification Commenced After December 1, 2022"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"4a3dd24cf2e3d6bd00ac4b9dc4730481037b9809450b427d22beb4f1cfbe71c7","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-60.120a","next":"us/40-cfr-60.122a"},"notice":"GroundRules: Original legal text. Not legal advice."}