40 CFR 421.24 - Standards of performance for new sources.

§ 421.24 Standards of performance for new sources.
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Subpart B—Anode and Cathode Paste Plant Wet Air.
Pollution Control—NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of paste produced
Benzo(a)pyrene .000
Antimony .000 .000
Nickel .000 .000
Aluminum .000 .000
Fluoride .000 .000
Oil and grease .000 .000
Total suspended solids .000 .000
pH (1) (1)
(b) Subpart B—Anode Contact Cooling and Briquette Quenching.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of anodes cast
Benzo(a)pyrene 0.007 0.003
Antimony .403 .180
Nickel .115 .077
Aluminum 1.277 .566
Fluoride 12.440 5.518
Oil and grease 2.090 2.090
Total suspended solids 3.135 2.508
pH (1) (1)
(c) Subpart B—Anode Bake Plant Wet Air Pollution Control.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of anodes baked
Benzo(a)pyrene .000
Antimony .000 .000
Nickel .000 .000
Aluminum .000 .000
Fluoride .000 .000
Oil and grease .000 .000
Total suspended solids .000 .000
pH (1) (1)
(d) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of cryolite recovered
Benzo(a)pyrene 1.181 0.547
Antimony 420.400 189.200
Cyanide 157.600 70.060
Nickel 80.570 35.030
Aluminum 273.200 122.600
Fluoride 29,430.000 13,310.000
Oil and grease 350.300 350.300
Total suspended solids 2,172.000 945.800
pH (1) (1)
(e) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of cryolite recovered
Benzo(a)pyrene 1.181 0.547
Antimony 67.610 30.120
Cyanide 157.600 70.060
Nickel 19.270 12.960
Aluminum 214.000 94.930
Fluoride 2,084.000 924.800
Oil and grease 350.300 350.300
Total suspended solids 2,172.000 945.800
pH (1) (1)
(f) Subpart B—Potline Wet Air Pollution Control.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene .000
Antimony .000 .000
Nickel .000 .000
Aluminum .000 .000
Fluoride .000 .000
Oil and grease .000 .000
Total suspended solids .000 .000
pH (1) (1)
(g) Subpart B—Potroom Wet Air Pollution Control.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene .000
Antimony .000 .000
Nickel .000 .000
Aluminum .000 .000
Fluoride .000 .000
Oil and grease .000 .000
Total suspended solids .000 .000
pH (1) (1)
(h) Subpart B—Potline SO2 Emissions Wet Air Pollution Control.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) aluminum produced from electrolytic reduction
Benzo(a)pyrene 0.045 0.021
Antimony 2.588 1.153
Nickel .738 .496
Aluminum 8.194 3.634
Fluoride 79.790 35.400
Oil and grease 13.410 13.410
Total suspended solids 20.120 16.090
pH (1) (1)
(i) Subpart B—Degassing Wet Air Pollution Control.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene .000
Antimony .000 .000
Nickel .000 .000
Aluminum .000 .000
Fluoride .000 .000
Oil and grease .000 .000
Total suspended solids .000 .000
pH (1) (1)
(j) Subpart B—Pot Repair and Pot Soaking.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene .000
Antimony .000 .000
Nickel .000 .000
Aluminum .000 .000
Fluoride .000 .000
Oil and grease .000 .000
Total suspended solids .000 .000
pH (1) (1)
(k) Subpart B—Direct Chill Casting Contact Cooling.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 There shall be no discharge allowance for this pollutant.
2 The pH shall be maintained within the range of 7.0 to 10.0 at all times except for those situations when this waste is discharged separately and without commingling with any other waste-water in which case the pH shall be within the range of 6.0 to 10.0 at all times.
mg/kg (pound per million pounds) of aluminum product from direct chill casting
Benzo(a)pyrene (1) (1)
Antimony 2.565 1.143
Nickel .731 .492
Aluminum 8.120 3.602
Fluoride 79.080 35.090
Oil and grease 13.290 13.290
Total suspended solids 19.940 15.950
pH (2) (2)
(l) Subpart B—Continuous Rod Casting Contact Cooling.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 There shall be no discharge allowance for this pollutant.
2 Within the range of 7.0 to 10.0 at all times.
mg/kg (pound per million pounds) of aluminum product from rod casting
Benzo(a)pyrene (1) (1)
Antimony .201 .089
Nickel .057 .038
Aluminum .636 .282
Fluoride 6.188 2.746
Oil and grease 1.040 1.040
Total suspended solids 1.560 1.248
pH (2) (2)
(m) Subpart B—Stationary Casting or Shot Casting Contact Cooling.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.0 to 10.0 at all times.
mg/kg (pounds per million pounds) of aluminum product from stationary casting or shot casting
Benzo(a)pyrene .000
Antimony .000 .000
Nickel .000 .000
Aluminum .000 .000
Fluoride .000 .000
Oil and grease .000 .000
Total suspended solids .000 .000
pH (1) (1)
[49 FR 8792, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 52 FR 25558, July 7, 1987]

Title 40 published on 2014-07-01

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