{"data":{"id":"us/40-cfr-420.123","jurisdiction":"us","citation":"40 CFR 420.123","heading":"Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).","body":"Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.\n(a) Galvanizing, terne coating and other coatings—(1) Strip, sheet, and miscellaneous products scrubbers.\nSubpart L\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nLead 0.00113 0.000376\nZinc 0.00150 0.000500\nChromium (hexavalent) 1 0.000150 0.0000501\n1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewater from the chromate rinse step.\n(2) [Reserved]\n(b) Galvanizing and other coatings—(1) Wire products and fasteners.\nSubpart L\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (pounds per 1,000 lb) of product\nLead 0.00451 0.00150\nZinc 0.00601 0.00200\nChromium (hexavalent) 1 0.000601 0.000200\n1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.\n(2) [Reserved]\n(c) Fume scrubbers.\nSubpart L\nPollutant or pollutant property BAT effluent limitations\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg per day\nLead 0.0368 0.0123\nZinc 0.0491 0.0164\nChromium (hexavalent) 1 0.00490 0.00163\n1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.\nThe above limitations shall be applicable to each fume scrubber associated with any of the coating operations specified above.","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 L—Hot Coating 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":"a4e09dcc6abd52be8675272515b02f126bd4e7c277df98c16c23158162802e13","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-420.122","next":"us/40-cfr-420.124"},"notice":"GroundRules: Original legal text. Not legal advice."}