§ 421.54 Standards of performance for new sources.
Current through Aug 22, 2025 · Read all of Part 421
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Subpart E—Casting Contact Cooling.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of copper cast | ||
| Arsenic | .692 | .309 |
| Copper | .638 | .304 |
| Nickel | .274 | .184 |
| Total suspended solids | 7.470 | 5.976 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
(b) Subpart E—Anode and Cathode Rinse.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of cathode copper production | ||
| Arsenic | .000 | .000 |
| Copper | .000 | .000 |
| Nickel | .000 | .000 |
| Total suspended solids | .000 | .000 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
(c) Subpart E—Spent Electrolyte.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of copper cathode production | ||
| Arsenic | .068 | .031 |
| Copper | .063 | .030 |
| Nickel | .027 | .018 |
| Total suspended solids | .735 | .588 |
| pH | ( 1) | ( 1) |
1 Within the range 7.5 to 10.0 at all times.
(d) Subpart E—Casting Wet Air Pollution Control.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of casting production | ||
| Arsenic | .000 | .000 |
| Copper | .000 | .000 |
| Nickel | .000 | .000 |
| Total suspended solids | .000 | .000 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
(e) Subpart E—By-Product Recovery.
NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of product recovered from electrolytic slimes processing | ||
| Arsenic | .000 | .000 |
| Copper | .000 | .000 |
| Nickel | .000 | .000 |
| Total suspended solids | .000 | .000 |
| pH | ( 1) | ( 1) |
1 Within the range of 7.5 to 10.0 at all times.
[49 FR 8801, Mar. 8, 1984, as amended at 49 FR 29795, July 24, 1984]