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Code of Federal Regulations (Last Updated: April 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter N - Effluent Guidelines and Standards |
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Part 467 - Aluminum Forming Point Source Category |
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Subpart B - Rolling With Emulsions Subcategory |
§ 467.23 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
Latest version.
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§ 467.23 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
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. The discharge of process wastewater pollutants from the core shall not exceed the values set forth below:
Subpart B
Core
Pollutant or pollutant property BAT effluent limitations Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum rolled with emulsions Chromium 0.057 0.024 Cyanide 0.038 0.016 Zinc 0.19 0.079 Aluminum 0.84 0.42 Subpart B
Direct Chill Casting Contact Cooling Water
Pollutant or pollutant property BAT effluent limitations Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cast Chromium 0.59 0.24 Cyanide 0.39 0.16 Zinc 1.94 0.81 Aluminum 8.55 4.26 Subpart B
Solution Heat Treatment Contact Cooling Water
Pollutant or pollutant property BAT Effluent Limitations Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum quenched Chromium 0.90 0.37 Cyanide 0.59 0.25 Zinc 2.98 1.25 Aluminum 13.10 6.52 Subpart B
Cleaning or Etching Bath
Pollutant or pollutant property BAT effluent limitations Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium 0.079 0.032 Cyanide 0.052 0.022 Zinc 0.26 0.109 Aluminum 1.15 0.573 Subpart B
Cleaning or Etching Rinse
Pollutant or pollutant property BAT effluent limitations Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium 0.61 0.25 Cyanide 0.41 0.17 Zinc 2.03 0.85 Aluminum 8.95 4.45 Subpart B
Cleaning or Etching Scrubber Liquor
Pollutant or pollutant property BAT effluent limitations Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium 0.85 0.35 Cyanide 0.56 0.23 Zinc 2.82 1.18 Aluminum 12.43 6.19 [48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11633, Mar. 27, 1984]