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):
Subpart AP—Hydrogen Cyanide
| Pollutant or pollutant property | NSPS effluent limitations | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Kg/kkg (or pounds per 1,000 lb) of product | ||
| TSS | 8.6 | 3.2 |
| Cyanide A | 0.10 | 0.021 |
| Total Cyanide | 0.65 | 0.23 |
| Total Residual Chlorine | 0.086 | 0.051 |
| Ph | ( 1) | ( 1) |
1 Within the range 6.0 to 10.5.
