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
| 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 | 0.005 | 0.002
|
| Antimony | .263 | .117
|
| Nickel | .075 | .050
|
| Aluminum | .831 | .369
|
| Fluoride | 8.092 | 3.591 |
(b) Subpart (B)—Anode Contact Cooling and Briquette Quenching.
| 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
|
| Antimony | .403 | .180
|
| Nickel | .115 | .077
|
| Aluminum | 1.277 | .566
|
| Fluoride | 12.440 | 5.518 |
(c) Subpart (B)—Anode Bake Plant Wet Air Pollution Control (Closed Top Ring Furnace).
| 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 | 0.146 | 0.067
|
| Antimony | 8.346 | 3.719
|
| Nickel | 2.378 | 1.600
|
| Aluminum | 26.420 | 11.720
|
| Fluoride | 257.300 | 114.200 |
(d) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Spray Tower Only).
| 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 | 0.002 | 0.001
|
| Antimony | .097 | .043
|
| Nickel | .028 | .019
|
| Aluminum | .306 | .136
|
| Fluoride | 2.975 | 1.320 |
(e) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Wet Electrostatic Precipitator and Spray Tower).
| 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 | 0.025 | 0.011
|
| Antimony | 1.409 | .628
|
| Nickel | .402 | .270
|
| Aluminum | 4.461 | 1.979
|
| Fluoride | 43.440 | 19.270 |
(f) Subpart B—Anode Bake Plant Wet Air Pollution Control (Tunnel Kiln).
| 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 | 0.038 | 0.018
|
| Antimony | 2.197 | .979
|
| Nickel | .626 | .421
|
| Aluminum | 6.953 | 3.084
|
| Fluoride | 67.710 | 30.050 |
(g) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).
| 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
|
| 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 |
(h) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).
| 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
|
| 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 |
(i) Subpart B—Cathode Reprocessing (Operated With Wet Potline Scrubbing).
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of cryolite recovered
|
| Benzo(a)pyrene | .000 | |
| Antimony | .000 | .000
|
| Cyanide | .000 | .000
|
| Nickel | .000 | .000
|
| Aluminum | .000 | .000
|
| Fluoride | .000 | .000 |
(j) Subpart B—Potline Wet Air Pollution Control (Operated Without Cathode Reprocessing).
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
|
| Benzo(a)pyrene | 0.028 | 0.013
|
| Antimony | 1.618 | .721
|
| Nickel | .461 | .310
|
| Aluminum | 5.120 | 2.271
|
| Fluoride | 49.860 | 22.130 |
(k) Subpart B—Potline Wet Air Pollution Control (Operated With Cathode Reprocessing and Not Commingled With Other Process or Nonprocess Waters).
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
|
| Benzo(a)pyrene | 0.028 | 0.013
|
| Antimony | 10.060 | 4.525
|
| Cyanide | 3.771 | 1.676
|
| Nickel | 1.928 | .838
|
| Aluminum | 6.537 | 2.933
|
| Fluoride | 703.900 | 318.500 |
(l) Potline Wet Air Pollution Control Cooperated With Cathode Reprocessing and Commingled With Other Process or Nonprocess Wastewaters).
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
|
| Benzo(a)pyrene | 0.028 | 0.013
|
| Antimony | 1.618 | .721
|
| Cyanide | 3.771 | 1.676
|
| Nickel | 0.461 | .310
|
| Aluminum | 5.120 | 2.271
|
| Fluoride | 49.860 | 22.130 |
(m) Subpart B—Potroom Wet Air Pollution Control.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
|
| Benzo(a)pyrene | 0.056 | 0.026
|
| Antimony | 3.204 | 1.428
|
| Nickel | .913 | .614
|
| Aluminum | 10.140 | 4.499
|
| Fluoride | 98.770 | 43.830 |
(n) Subpart B—Potline SO2 Emissions Wet Air Pollution Control.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of 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 |
(o) Subpart B—Degassing Wet Air Pollution Control.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction
|
| Benzo(a)pyrene | (
1) | (
1)
|
| Antimony | 5.036 | 2.244
|
| Nickel | 1.435 | .965
|
| Aluminum | 15.940 | 7.071
|
| Fluoride | 155.300 | 68.880
|
(p) Subpart B—Pot Repair and Pot Soaking.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| 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 |
(q) Subpart B—Direct Chill Casting Contact Cooling.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| 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
|
(r) Subpart B—Continuous Rod Casting Contact Cooling.
| 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)
|
| Antimony | .201 | .089
|
| Nickel | .057 | .038
|
| Aluminum | .636 | .282
|
| Fluoride | 6.188 | 2.746
|
(s) Subpart B—Stationary Casting or Shot Casting Contact Cooling.
| 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 | |
| Antimony | .000 | .000
|
| Nickel | .000 | .000
|
| Aluminum | .000 | .000
|
| Fluoride | .000 | .000 |
authority: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (the “Act”);
33 U.S.C. 1311,
1314,
c,
e,
and, 1316 (b) and
c, 1317 (b) and
c,
1318; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4
source: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.
cite as: 40 CFR 421.23