GroundRules
40 CFR 467.23: Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
- PART 467—ALUMINUM FORMING POINT SOURCE CATEGORY
- Subpart B—Rolling With Emulsions Subcategory
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
Collected 2026-08-27T02:26:04Z. Source file · JSON