CFR / Title 40 / Part 421 / Sec. 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------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of paste

produced

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

anodes cast

--------------Benzo(a)pyrene................................ 0.007 0.003Nickel........................................ .115 .077

Fluoride...................................... 12.440 5.518------------------------------------------------------------------------

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

anodes baked

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

cryolite recovered

--------------Benzo(a)pyrene................................ 1.181 0.547Cyanide....................................... 157.600 70.060Nickel........................................ 80.570 35.030Fluoride...................................... 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------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

cryolite recovered

--------------Benzo(a)pyrene................................ 1.181 0.547Cyanide....................................... 157.600 70.060Nickel........................................ 19.270 12.960Fluoride...................................... 2,084.000 924.800------------------------------------------------------------------------

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum produced from

electrolytic reduction

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum produced from

electrolytic reduction

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum produced from

electrolytic reduction

--------------Benzo(a)pyrene................................ 0.045 0.021Nickel........................................ .738 .496Fluoride...................................... 79.790 35.400------------------------------------------------------------------------

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum produced from

electrolytic reduction

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum produced from

electrolytic reduction

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum product from

direct chill casting

--------------Benzo(a)pyrene................................ (\1\) (\1\)Nickel........................................ .731 .492Fluoride...................................... 79.080 35.090------------------------------------------------------------------------\1\ There shall be no discharge allowance for this pollutant.

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

PSNS------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pound per million

pounds) of aluminum

product from rod casting

--------------Benzo(a)pyrene................................ (\1\) (\1\)Nickel........................................ .057 .038Fluoride...................................... 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------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pound per million

pounds) of aluminum

product from stationary

casting or shot casting

--------------Benzo(a)pyrene................................ .000 ...........Nickel........................................ .000 .000Fluoride...................................... .000 .000------------------------------------------------------------------------ [49 FR 8792, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 52 FR 25559, July 7, 1987] Sec. 421.27 [Reserved]