Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 274 - Nonferrous metals manufacturing › Subchapter II - Primary Aluminum Smelting › Section NR 274.024 - New source performance standards

Current through June 24, 2024
Any new source subject to this subchapter shall achieve the
					 following standards:
Table 2-21
Primary Aluminum Smelting Anode and Cathode Paste
					 Plant
Wet Air Pollution Control
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of
								  paste
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Oil and grease
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-22
Primary Aluminum Smelting Anode Contact Cooling and
					 Briquette Quenching
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of anodes
								  cast
Benzo(a)pyrene
0.007
0.003
Antimony
0.403
0.180
Nickel
0.115
0.077
Aluminum
1.277
0.566
Fluoride
12.440
5.518
Oil and grease
2.090
2.090
Total suspended solids
3.135
2.508
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-23
Primary Aluminum Smelting Anode Bake Plant Wet Air
					 Pollution Control
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of anodes
								  baked
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Oil and grease
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-24
Primary Aluminum Smelting Cathode Reprocessing Operated
					 With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess
					 Wastewaters
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 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
Oil and grease
350.300
350.300
Total suspended solids
2,172.000
945.800
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-25
Primary Aluminum Smelting Cathode Reprocessing Operated
					 With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess
					 Wastewaters
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 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
Oil and grease
350.300
350.300
Total suspended solids
2,172.000
945.800
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-26
Primary Aluminum Smelting Potline Wet Air Pollution
					 Control
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from electrolytic reduction
Benzo(a)pyrene
0.000
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Oil and grease
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-27
Primary Aluminum Smelting Potroom Wet Air Pollution
					 Control
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from electrolytic reduction
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Oil and grease
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-28
Primary Aluminum Smelting Potline Sulfur Dioxide Emissions
					 Wet Air Pollution Control
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from electrolytic reduction
Benzo(a)pyrene
0.045
0.021
Antimony
2.588
1.153
Nickel
0.738
0.496
Aluminum
8.194
3.634
Fluoride
79.790
35.400
Oil and grease
13.410
13.410
Total suspended solids
20.120
16.090
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-29
Primary Aluminum Smelting Degassing Wet Air Pollution
					 Control
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from electrolytic reduction
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Oil and grease
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-30
Primary Aluminum Smelting Pot Repair and Pot Soaking
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from electrolytic reduction
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Oil and grease
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all times.
Table 2-31
Primary Aluminum Smelting Direct Chill Casting Contact
					 Cooling
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from direct chill casting
Benzo(a)pyrene
(1)
(1)
Antimony
2.565
1.143
Nickel
0.731
0.492
Aluminum
8.120
3.602
Fluoride
79.080
35.090
Oil and grease
13.290
13.290
Total suspended solids
19.940
15.950
pH
(2)
(2)
(1) This pollutant has no discharge allowance.
(2) Within the range of 7.0 to 10.0 at all times, but if
					 this waste is discharged separately and without commingling with any other
					 wastewater, the pH shall be within the range of 6.0 to 10.0 at all times.
Table 2-32
Primary Aluminum Smelting Continuous Rod Casting Contact
					 Cooling
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from rod casting
Benzo(a)pyrene
(1)
(1)
Antimony
0.201
0.089
Nickel
0.057
0.038
Aluminum
0.636
0.282
Fluoride
6.188
2.746
Oil and grease
1.040
1.040
Total suspended solids
1.560
1.248
pH
(2)
(2)
(1) This pollutant has no discharge allowance
(2) Within the range of 7.0 to 10.0 at all times.
Table 2-33
Primary Aluminum Smelting Stationary Casting or Shot
					 Casting Contact Cooling
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per 1,000,000 pounds) of aluminum
								  produced from stationary casting or shot casting
Benzo(a)pyrene
0.000
Antimony
0.000
0.000
Nickel
0.000
0.000
Aluminum
0.000
0.000
Fluoride
0.000
0.000
Oil and grease
0.000
0.000
Total suspended solids
0.000
0.000
pH
(1)
(1)
(1) Within the range of 7.0 to 10.0 at all
					 times.