{"data":{"id":"us/40-cfr-420.74","jurisdiction":"us","citation":"40 CFR 420.74","heading":"New source performance standards (NSPS).","body":"The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below.\n(a) Primary mills, carbon and specialty—(1) Without scarfing.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nTSS 0.0150 0.00563\nO\u0026G 0.00373\npH (1) (1)\n1 Within the range of 6.0 to 9.0.\n(2) With scarfing.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nTSS 0.0234 0.00876\nO\u0026G 0.00584\npH (1) (1)\n1 Within the range of 6.0 to 9.0.\n(b) Section mills—(1) Carbon.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nTSS 0.0334 0.0125\nO\u0026G 0.00834\npH (1) (1)\n1 Within the range of 6.0 to 9.0.\n(2) Specialty.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nTSS 0.0217 0.00813\nO\u0026G 0.00542\npH (1) (1)\n1 Within the range of 6.0 to 9.0.\n(c) Flat mills—(1) Hot strip and sheet mills, carbon and specialty.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of products\nTSS 0.0435 0.0163\nO\u0026G 0.0109\npH (1) (1)\n1 Within the range of 6.0 to 9.0\n(2) Carbon plate mills.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of products\nTSS 0.0234 0.00876\nO\u0026G 0.00584\npH (1) (1)\n1 Within the range of 6.0 to 9.0\n(3) Specialty plate mills.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of products\nTSS 0.0100 0.00375\nO\u0026G 0.00250\npH (1) (1)\n1 Within the range of 6.0 to 9.0\n(d) Pipe and tube mills, carbon and specialty.\nSubpart G\nPollutant or pollutant property New source performance standards\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of products\nTSS 0.0369 0.0138\nO\u0026G 0.00917\npH (1) (1)\n1 Within the range of 6.0 to 9.0","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 420—IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY","Subpart G—Hot Forming Subcategory"],"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":"bc4ac8d609d024c335eee7fa1029777d97d90fc9e571f6beea161c49a94f5e3d","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-420.73","next":"us/40-cfr-420.75"},"notice":"GroundRules: Original legal text. Not legal advice."}