U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
Any new source subject to this subpart must achieve the following new source performance standards (NSPS):
| Pollutant or pollutant property | NSPS | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Kg/kkg (or pounds per 1,000 lb) of wool | ||
| BOD | 3.6 | 1.9 |
| COD | 52.4 | 33.7 |
| TSS | 30.3 | 13.5 |
| Sulfide | 0.20 | 0.10 |
| Phenols | 0.10 | 0.05 |
| Total chromium | 0.10 | 0.05 |
| pH | ( 1) | ( 1) |
1 Within the range 6.0 to 9.0 at all times.
Note: Additional allocations for “commission scouring” are not available to new sources.
