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40 C.F.R. § 421.23

Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

§ 421.23 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

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

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of paste produced
Benzo(a)pyrene0.0050.002
Antimony.263.117
Nickel.075.050
Aluminum.831.369
Fluoride8.0923.591

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

BAT Effluent Limitations

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
Antimony.403.180
Nickel.115.077
Aluminum1.277.566
Fluoride12.4405.518

(c) Subpart (B)—Anode Bake Plant Wet Air Pollution Control (Closed Top Ring Furnace).

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of anodes baked
Benzo(a)pyrene0.1460.067
Antimony8.3463.719
Nickel2.3781.600
Aluminum26.42011.720
Fluoride257.300114.200

(d) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Spray Tower Only).

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of anodes baked
Benzo(a)pyrene0.0020.001
Antimony.097.043
Nickel.028.019
Aluminum.306.136
Fluoride2.9751.320
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