Any new source subject to this subpart must achieve the following performance standards.
(a)
There shall be no discharge allowance for wastewater pollutants from the degassing operation.
(b)
The discharge of wastewater pollutants from the core and ancillary operations except those listed in paragraph (a) shall not exceed the values set forth below:
|
mg/off-kg (lb/million off-lbs) of aluminum extruded |
| Chromium |
0.13 |
0.051 |
| Cyanide |
0.068 |
0.027 |
| Zinc |
0.35 |
0.14 |
| Aluminum |
2.07 |
0.92 |
| Oil and grease |
3.39 |
3.39 |
| Suspended solids |
5.10 |
4.07 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
mg/off-kg (lb/million off-lbs) of aluminum extruded |
| Chromium |
0.11 |
0.045 |
| Cyanide |
0.060 |
0.024 |
| Zinc |
0.31 |
0.126 |
| Aluminum |
1.82 |
0.81 |
| Oil and grease |
2.98 |
2.98 |
| Suspended solids |
4.47 |
3.58 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
mg/off-kg (lb/million off-lbs) of aluminum cast by semicontinuous methods |
| Chromium |
0.49 |
0.20 |
| Cyanide |
0.27 |
0.11 |
| Zinc |
1.36 |
0.56 |
| Aluminum |
8.12 |
3.60 |
| Oil and grease |
13.29 |
13.29 |
| Suspended solids |
19.94 |
15.95 |
| pH |
(1) |
(1) |
|
1 The pH shall be maintained within the range of 7.0 to 10.0 at all times except for those situations when this waste stream is discharged separately and without commingling with any other wastewater in which case the pH shall be within the range of 6.0 to 10.0 at all times. |
|
mg/off-kg (lb/million off-lbs) of aluminum quenched |
| Chromium |
0.76 |
0.31 |
| Cyanide |
0.41 |
0.17 |
| Zinc |
2.08 |
0.86 |
| Aluminum |
12.45 |
5.52 |
| Oil and grease |
20.37 |
20.37 |
| Suspended solids |
30.56 |
24.45 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum quenched |
| Chromium |
0.76 |
0.31 |
| Cyanide |
0.41 |
0.17 |
| Zinc |
2.08 |
0.86 |
| Aluminum |
12.45 |
5.52 |
| Oil and grease |
20.37 |
20.37 |
| Suspended solids |
30.56 |
24.45 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched |
| Chromium |
0.067 |
0.027 |
| Cyanide |
0.036 |
0.015 |
| Zinc |
0.183 |
0.075 |
| Aluminum |
1.094 |
0.485 |
| Oil and grease |
1.79 |
1.79 |
| Suspended solids |
2.69 |
2.15 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched |
| Chromium |
0.52 |
0.21 |
| Cyanide |
0.28 |
0.11 |
| Zinc |
1.42 |
0.59 |
| Aluminum |
8.50 |
3.77 |
| Oil and grease |
13.91 |
13.91 |
| Suspended solids |
20.87 |
16.70 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched |
| Chromium |
0.72 |
0.29 |
| Cyanide |
0.39 |
0.16 |
| Zinc |
1.97 |
0.81 |
| Aluminum |
11.81 |
5.24 |
| Oil and grease |
19.33 |
19.33 |
| Suspended solids |
29.00 |
23.20 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
Code of Federal Regulations
[48 FR 49149, Oct. 24, 1983; 49 FR 11633 and 11634, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988]
Any new source subject to this subpart must achieve the following performance standards.
(a)
There shall be no discharge allowance for wastewater pollutants from the degassing operation.
(b)
The discharge of wastewater pollutants from the core and ancillary operations except those listed in paragraph (a) shall not exceed the values set forth below:
|
mg/off-kg (lb/million off-lbs) of aluminum extruded |
| Chromium |
0.13 |
0.051 |
| Cyanide |
0.068 |
0.027 |
| Zinc |
0.35 |
0.14 |
| Aluminum |
2.07 |
0.92 |
| Oil and grease |
3.39 |
3.39 |
| Suspended solids |
5.10 |
4.07 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
mg/off-kg (lb/million off-lbs) of aluminum extruded |
| Chromium |
0.11 |
0.045 |
| Cyanide |
0.060 |
0.024 |
| Zinc |
0.31 |
0.126 |
| Aluminum |
1.82 |
0.81 |
| Oil and grease |
2.98 |
2.98 |
| Suspended solids |
4.47 |
3.58 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
mg/off-kg (lb/million off-lbs) of aluminum cast by semicontinuous methods |
| Chromium |
0.49 |
0.20 |
| Cyanide |
0.27 |
0.11 |
| Zinc |
1.36 |
0.56 |
| Aluminum |
8.12 |
3.60 |
| Oil and grease |
13.29 |
13.29 |
| Suspended solids |
19.94 |
15.95 |
| pH |
(1) |
(1) |
|
1 The pH shall be maintained within the range of 7.0 to 10.0 at all times except for those situations when this waste stream is discharged separately and without commingling with any other wastewater in which case the pH shall be within the range of 6.0 to 10.0 at all times. |
|
mg/off-kg (lb/million off-lbs) of aluminum quenched |
| Chromium |
0.76 |
0.31 |
| Cyanide |
0.41 |
0.17 |
| Zinc |
2.08 |
0.86 |
| Aluminum |
12.45 |
5.52 |
| Oil and grease |
20.37 |
20.37 |
| Suspended solids |
30.56 |
24.45 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum quenched |
| Chromium |
0.76 |
0.31 |
| Cyanide |
0.41 |
0.17 |
| Zinc |
2.08 |
0.86 |
| Aluminum |
12.45 |
5.52 |
| Oil and grease |
20.37 |
20.37 |
| Suspended solids |
30.56 |
24.45 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched |
| Chromium |
0.067 |
0.027 |
| Cyanide |
0.036 |
0.015 |
| Zinc |
0.183 |
0.075 |
| Aluminum |
1.094 |
0.485 |
| Oil and grease |
1.79 |
1.79 |
| Suspended solids |
2.69 |
2.15 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched |
| Chromium |
0.52 |
0.21 |
| Cyanide |
0.28 |
0.11 |
| Zinc |
1.42 |
0.59 |
| Aluminum |
8.50 |
3.77 |
| Oil and grease |
13.91 |
13.91 |
| Suspended solids |
20.87 |
16.70 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
|
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched |
| Chromium |
0.72 |
0.29 |
| Cyanide |
0.39 |
0.16 |
| Zinc |
1.97 |
0.81 |
| Aluminum |
11.81 |
5.24 |
| Oil and grease |
19.33 |
19.33 |
| Suspended solids |
29.00 |
23.20 |
| pH |
(1) |
(1) |
|
1 Within the range of 7.0 to 10.0 at all times. |
|
Code of Federal Regulations
[48 FR 49149, Oct. 24, 1983; 49 FR 11633 and 11634, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988]
