New source performance standards.

Any new source subject to this subpart must achieve the following performance standards. The discharge of wastewater pollutants from the core and ancillary operations shall not exceed the values set forth below: Subpart E Core Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum drawn with neat oils Chromium 0.019 0.008 Cyanide 0.010 0.004 Zinc 0.051 0.021 Aluminum 0.304 0.135 Oil and grease 0.498 0.498 Suspended solids 0.747 0.598 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10 at all times. Subpart E Continuous Rod Casting Spent Lubricant Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum rod cast Chromium 0.0008 0.0003 Cyanide 0.0004 0.0002 Zinc 0.002 0.0008 Aluminum 0.012 0.006 Oil and grease 0.02 0.02 Suspended solids 0.03 0.024 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10 at all times. Subpart E Continuous Rod Casting Contact Cooling Water Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum rod cast Chromium 0.072 0.029 Cyanide 0.039 0.016 Zinc 0.198 0.082 Aluminum 1.185 0.526 Oil and grease 1.939 1.939 Suspended solids 2.909 2.327 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10 at all times. Subpart E Solution Heat Treatment Contact Cooling Water Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum quenched Chromium 0.754 0.306 Cyanide 0.408 0.163 Zinc 2.08 0.856 Aluminum 12.45 5.52 Oil and grease 20.37 20.37 Suspended solids 30.56 24.45 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10 at all times. Subpart E Cleaning or Etching Bath Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium 0.066 0.027 Cyanide 0.036 0.015 Zinc 0.183 0.075 Aluminum 1.094 0.485 Oil and grease 1.79 1.79 Suspended solids 2.69 2.15 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10 at all times. Subpart E Cleaning or Etching Rinse Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium 0.515 0.209 Cyanide 0.278 0.111 Zinc 1.42 0.584 Aluminum 8.50 3.77 Oil and grease 13.91 13.91 Suspended solids 20.87 16.70 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10 at all times. Subpart E Cleaning or Etching Scrubber Liquor Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium 0.715 0.290 Cyanide 0.387 0.155 Zinc 1.97 0.812 Aluminum 11.81 5.24 Oil and grease 19.33 19.33 Suspended solids 29.00 23.20 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10 at all times. [48 FR 49149, Oct. 24, 1983; 49 FR 11633, 11635, Mar. 27, 1984]