{"data":{"id":"us/40-cfr-table-2-to-subpart-x-of-part-63","jurisdiction":"us","citation":"40 CFR Table 2 to Subpart X of Part 63","heading":"Table 2 to Subpart X of Part 63—Emissions Limits for Secondary Lead Smelting Furnaces","body":"For vents from these processes . . . You must meet the following emissions limits . . . a\nTotal hydrocarbon ppm by volume expressed as propane corrected to 4 percent carbon dioxide Dioxin and furan (dioxins and furans) nanograms/dscm expressed as TEQ corrected to 7 percent O2\nCollocated blast and reverberatory furnaces (new and existing) 20 ppmv 0.50 ng/dscm.\nCollocated blast and reverberatory furnaces when the reverberatory furnace is not operating for units that comments construction or reconstruction before June 9, 1994 360 ppmv 170 ng/dscm.\nCollocated blast and reverberatory furnaces when the reverberatory furnace is not operating for units that commence construction or reconstruction after June 9, 1994 70 ppmv 170 ng/dscm.\nBlast furnaces that commence construction or reconstruction before June 9, 1994 360 ppmv 170 ng/dscm.\nBlast furnaces that commence construction or reconstruction after June 9, 1994 70 ppmv 170 ng/dscm.\nBlast furnaces that commence construction or reconstruction after May 19, 2011 70 ppmv 10 ng/dscm.\nReverberatory and electric furnaces that commence construction or reconstruction before May 19, 2011 12 ppmv 0.20 ng/dscm.\nReverberatory and electric furnaces that commence construction or reconstruction after May 19, 2011 12 ppmv 0.10 ng/dscm.\na There are no standards for dioxins and furans during periods of startup and shutdown.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart X—National Emission Standards For Hazardous Air Pollutants From Secondary Lead Smelting"],"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":"13554e5b05f2ed846ccbf1863f7077ba2625647929993175ae273d44a8389b8c","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-1-to-subpart-x-of-part-63","next":"us/40-cfr-table-3-to-subpart-x-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}