1. Regulations
  2. title 40
  3. chapter I-i30
  4. part 421
  5. subpart B
  6. § 421.24

Collapse to view only § 421.24 - Standards of performance for new sources.

§ 421.20 - Applicability: description of the primary aluminum smelting subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of aluminum from alumina in the Hall-Heroult process.

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.20

§ 421.21 - Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter, shall apply to this subpart.

(b) The term product shall mean hot aluminum metal.

(c) If a permittee chooses to analyze for benzo(a)pyrene using any EPA-approved method, any “non-detected” measurements shall be considered zeroes for the purpose of determining compliance with this regulation.

[49 FR 8792, Mar. 8, 1984, as amended at 52 FR 25556, July 7, 1987]

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.21

§ 421.22 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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 practicable technology currently available (BPT):

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average Metric units—kg/kkg of product English units—lbs/thousand lbs of product Fluoride2.01.0 Total Suspended solids3.01.5 pH( 1)( 1)

1 Within the range of 6 to 9 at all times.

[49 FR 8792, Mar. 8, 1984; 49 FR 29794, July 24, 1984]

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.22

§ 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

(e) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Wet Electrostatic Precipitator and Spray Tower).

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)pyrene0.0250.011 Antimony1.409.628 Nickel.402.270 Aluminum4.4611.979 Fluoride43.44019.270

(f) Subpart B—Anode Bake Plant Wet Air Pollution Control (Tunnel Kiln).

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)pyrene0.0380.018 Antimony2.197.979 Nickel.626.421 Aluminum6.9533.084 Fluoride67.71030.050

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

BAT Effluent Limitations

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 Antimony420.400189.200 Cyanide157.60070.060 Nickel80.57035.030 Aluminum273.200122.600 Fluoride29,430.00013,310.000

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

BAT Effluent Limitations

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 Antimony67.61030.120 Cyanide157.60070.060 Nickel19.27012.960 Aluminum214.00094.930 Fluoride2,084.000924.800

(i) Subpart B—Cathode Reprocessing (Operated With Wet Potline Scrubbing).

BAT Effluent Limitations

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.000Antimony.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).

BAT Effluent Limitations

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)pyrene0.0280.013 Antimony1.618.721 Nickel.461.310 Aluminum5.1202.271 Fluoride49.86022.130

(k) Subpart B—Potline Wet Air Pollution Control (Operated With Cathode Reprocessing and Not Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations

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)pyrene0.0280.013 Antimony10.0604.525 Cyanide3.7711.676 Nickel1.928.838 Aluminum6.5372.933 Fluoride703.900318.500

(l) Potline Wet Air Pollution Control Cooperated With Cathode Reprocessing and Commingled With Other Process or Nonprocess Wastewaters).

BAT Effluent Limitations

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)pyrene0.0280.013 Antimony1.618.721 Cyanide3.7711.676 Nickel0.461.310 Aluminum5.1202.271 Fluoride49.86022.130

(m) Subpart B—Potroom Wet Air Pollution Control.

BAT Effluent Limitations

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)pyrene0.0560.026 Antimony3.2041.428 Nickel.913.614 Aluminum10.1404.499 Fluoride98.77043.830

(n) Subpart B—Potline SO2 Emissions Wet Air Pollution Control.

BAT Effluent Limitations

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)pyrene0.0450.021 Antimony2.5881.153 Nickel.738.496 Aluminum8.1943.634 Fluoride79.79035.400

(o) Subpart B—Degassing Wet Air Pollution Control.

BAT Effluent Limitations

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) Antimony5.0362.244 Nickel1.435.965 Aluminum15.9407.071 Fluoride155.30068.880

1 There shall be no discharge allowance for this pollutant.

(p) Subpart B—Pot Repair and Pot Soaking.

BAT Effluent Limitations

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.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000

(q) Subpart B—Direct Chill Casting Contact Cooling.

BAT Effluent Limitations

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) Antimony2.5651.143 Nickel.731.492 Aluminum8.1203.602 Fluoride79.08035.090

1 There shall be no discharge allowance for this pollutant.

(r) Subpart B—Continuous Rod Casting Contact Cooling.

BAT Effluent Limitations

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 Fluoride6.1882.746

1 There shall be no discharge allowance for this pollutant.

(s) Subpart B—Stationary Casting or Shot Casting Contact Cooling.

BAT Effluent Limitations

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.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000
[49 FR 8792, Mar. 8, 1984, as amended at 52 FR 25556, July 7, 1987]

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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

§ 421.24 - Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

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

Pollution Control—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pound per million pounds) of paste produced Benzo(a)pyrene.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000 Oil and grease.000.000 Total suspended solids.000.000 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pound per million pounds) of anodes cast Benzo(a)pyrene0.0070.003 Antimony.403.180 Nickel.115.077 Aluminum1.277.566 Fluoride12.4405.518 Oil and grease2.0902.090 Total suspended solids3.1352.508 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pound per million pounds) of anodes baked Benzo(a)pyrene.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000 Oil and grease.000.000 Total suspended solids.000.000 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pound per million pounds) of cryolite recovered Benzo(a)pyrene1.1810.547 Antimony420.400189.200 Cyanide157.60070.060 Nickel80.57035.030 Aluminum273.200122.600 Fluoride29,430.00013,310.000 Oil and grease350.300350.300 Total suspended solids2,172.000945.800 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pound per million pounds) of cryolite recovered Benzo(a)pyrene1.1810.547 Antimony67.61030.120 Cyanide157.60070.060 Nickel19.27012.960 Aluminum214.00094.930 Fluoride2,084.000924.800 Oil and grease350.300350.300 Total suspended solids2,172.000945.800 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

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.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000 Oil and grease.000.000 Total suspended solids.000.000 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

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.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000 Oil and grease.000.000 Total suspended solids.000.000 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pound per million pounds) aluminum produced from electrolytic reduction Benzo(a)pyrene0.0450.021 Antimony2.5881.153 Nickel.738.496 Aluminum8.1943.634 Fluoride79.79035.400 Oil and grease13.41013.410 Total suspended solids20.12016.090 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

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.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000 Oil and grease.000.000 Total suspended solids.000.000 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

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.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000 Oil and grease.000.000 Total suspended solids.000.000 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

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

NSPS

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) Antimony2.5651.143 Nickel.731.492 Aluminum8.1203.602 Fluoride79.08035.090 Oil and grease13.29013.290 Total suspended solids19.94015.950 pH( 2)( 2)

1 There shall be no discharge allowance for this pollutant.

2 The pH shall be maintained within the range of 7.0 to 10.0 at all times except for those situations when this waste is discharged separately and without commingling with any other waste-water in which case the pH shall be within the range of 6.0 to 10.0 at all times.

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

NSPS

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 Fluoride6.1882.746 Oil and grease1.0401.040 Total suspended solids1.5601.248 pH( 2)( 2)

1 There shall be no discharge allowance for this pollutant.

2 Within the range of 7.0 to 10.0 at all times.

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

NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of aluminum product from stationary casting or shot casting Benzo(a)pyrene.000Antimony.000.000 Nickel.000.000 Aluminum.000.000 Fluoride.000.000 Oil and grease.000.000 Total suspended solids.000.000 pH( 1)( 1)

1 Within the range of 7.0 to 10.0 at all times.

[49 FR 8792, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 52 FR 25558, July 7, 1987]

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.24

§ 421.25 - [Reserved]

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.25

§ 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.000Nickel.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.000Nickel.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.000Nickel.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.000Nickel.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.000Nickel.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.000Nickel.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.000Nickel.000.000 Fluoride.000.000
[49 FR 8792, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 52 FR 25559, July 7, 1987]

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.26

§ 421.27 - [Reserved]

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.27