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
|
mg/kg (pound per million pounds) of paste produced |
| Benzo(a)pyrene |
.000 |
|
| Antimony |
.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
|
mg/kg (pound 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 |
| 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. |
(c)
Subpart B—Anode Bake Plant Wet Air Pollution Control.
NSPS
|
mg/kg (pound per million pounds) of anodes baked |
| Benzo(a)pyrene |
.000 |
|
| Antimony |
.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
|
mg/kg (pound per million pounds) of cryolite recovered |
| Benzo(a)pyrene |
1.181 |
0.547 |
| Antimony |
420.400 |
189.200 |
Code of Federal Regulations
466
|
| 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. |
(e)
Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).
NSPS
|
mg/kg (pound 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 |
| 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. |
(f)
Subpart B—Potline Wet Air Pollution Control.
NSPS
|
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 |
| 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
|
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 |
| 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
|
mg/kg (pound per million pounds) 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 |
| 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. |
(i)
Subpart B—Degassing Wet Air Pollution Control.
NSPS
|
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 |
| 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
|
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 |
| 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
|
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 |
| Oil and grease |
13.290 |
13.290 |
| Total suspended solids |
19.940 |
15.950 |
| 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
|
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 |
| Oil and grease |
1.040 |
1.040 |
| Total suspended solids |
1.560 |
1.248 |
| 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
|
mg/kg (pounds 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 |
| 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]