40 CFR 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)pyrene 0.007 0.003

Nickel .115 .077

Fluoride 12.440 5.518

(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)pyrene 1.181 0.547

Cyanide 157.600 70.060

Nickel 80.570 35.030

Fluoride 29,430.000 13,310.000

(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)pyrene 1.181 0.547

Cyanide 157.600 70.060

Nickel 19.270 12.960

Fluoride 2,084.000 924.800

(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)pyrene 0.045 0.021

Nickel .738 .496

Fluoride 79.790 35.400

(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

Fluoride 79.080 35.090

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

Fluoride 6.188 2.746

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