40 C.F.R. § 421.26

Current through October 31, 2024
Section 421.26 - Pretreatment standards for new sources

Except as provided in 40 CFR 403.7 , any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary aluminum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart B-Anode and Cathode Paste Plant Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of paste produced
Benzo(a)pyrene.000
Nickel.000.000
Fluoride.000.000

(b) Subpart B-Anode Contact Cooling and Briquette Quenching.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of anodes cast
Benzo(a)pyrene0.0070.003
Nickel.115.077
Fluoride12.4405.518

(c) Subpart B-Anode Bake Plant Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of anodes baked
Benzo(a)pyrene.000
Nickel.000.000
Fluoride.000.000

(d) Subpart B-Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of cryolite recovered
Benzo(a)pyrene1.1810.547
Cyanide157.60070.060
Nickel80.57035.030
Fluoride29,430.00013,310.000

(e) Subpart B-Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of cryolite recovered
Benzo(a)pyrene1.1810.547
Cyanide157.60070.060
Nickel19.27012.960
Fluoride2,084.000924.800

(f) Subpart B-Potline Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene.000
Nickel.000.000
Fluoride.000.000

(g) Subpart B-Potroom Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene.000
Nickel.000.000
Fluoride.000.000

(h) Subpart B-Potline SO2 Emissions Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene0.0450.021
Nickel.738.496
Fluoride79.79035.400

(i) Subpart B-Degassing Wet Air Pollution Control.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene.000
Nickel.000.000
Fluoride.000.000

(j) Subpart B-Pot Repair and Pot Soaking.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction
Benzo(a)pyrene.000
Nickel.000.000
Fluoride.000.000

(k) Subpart B-Direct Chill Casting Contact Cooling.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of aluminum product from direct chill casting
Benzo(a)pyrene(1)(1)
Nickel.731.492
Fluoride79.08035.090

1 There shall be no discharge allowance for this pollutant.

(l) Subpart B-Continuous Rod Casting Contact Cooling.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pound per million pounds) of aluminum product from rod casting
Benzo(a)pyrene(1)(1)
Nickel.057.038
Fluoride6.1882.746

1 There shall be no discharge allowance for this pollutant.

(m) Subpart B-Stationary Casting or Shot Casting Contact Cooling.

PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pound per million pounds) of aluminum product from stationary casting or shot casting
Benzo(a)pyrene.000
Nickel.000.000
Fluoride.000.000

40 C.F.R. §421.26

49 FR 8792, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 52 FR 25559, July 7, 1987