{"data":{"id":"us/40-cfr-63.1158","jurisdiction":"us","citation":"40 CFR 63.1158","heading":"Emission standards for new or reconstructed sources.","body":"(a) Pickling lines—(1) Continuous pickling lines. No owner or operator of a new or reconstructed affected continuous pickling line at a steel pickling facility shall cause or allow to be discharged into the atmosphere from the affected pickling line:\n(i) Any gases that contain HCl in a concentration in excess of 6 ppmv; or\n(ii) HCl at a mass emission rate that corresponds to a collection efficiency of less than 99 percent.\n(2) Batch pickling lines. No owner or operator of a new or reconstructed affected batch pickling line at a steel pickling facility shall cause or allow to be discharged into the atmosphere from the affected pickling line:\n(i) Any gases that contain HCl in a concentration in excess of 18 ppmv; or\n(ii) HCl at a mass emission rate that corresponds to a collection efficiency of less than 97 percent.\n(b) Hydrochloric acid regeneration plants. (1) No owner or operator of a new or reconstructed affected plant shall cause or allow to be discharged into the atmosphere from the affected plant any gases that contain HCl in a concentration greater than 12 ppmv.\n(2) In addition to the requirement of paragraph (b)(1) of this section, no owner or operator of a new or reconstructed affected plant shall cause or allow to be discharged into the atmosphere from the affected plant any gases that contain Cl2 in a concentration in excess of 6 ppmv.","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 CCC—National Emission Standards for Hazardous Air Pollutants for Steel Pickling—HCl Process Facilities and Hydrochloric Acid Regeneration Plants"],"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":"489f3ad739b1f40bbdb118dac4103fe04a85843e9709e15cbb5b71176dfc5000","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.1157","next":"us/40-cfr-63.1159"},"notice":"GroundRules: Original legal text. Not legal advice."}