Except as provided in 40 CFR 403.7 and 403.13 , any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.
Subpart C
Pollutant or pollutant property | Pretreatment standards for existing sources | |
Maximum for any 1 day | Average of daily values for 30 consecutive days | |
Kg/kkg (pounds per 1,000 lb) of products | ||
Ammonia-N1 | 0.00876 | 0.00292 |
Cyanide | 0.00175 | 0.000876 |
Phenols (4AAP) | 0.0000584 | 0.0000292 |
Lead | 0.000263 | 0.0000876 |
Zinc | 0.000394 | 0.000131 |
1 The pretreatment standards for ammonia are not applicable to sources that discharge to a POTW with nitrification capability (defined at 420.02(s)).
Subpart C
Pollutant or pollutant property | Pretreatment standards for existing sources | |
Maximum for any 1 day | Average of daily values for 30 consecutive days | |
Kg/kkg (pounds per 1,000 lb) of product | ||
Ammonia-N | 0.0350 | 0.0175 |
Cyanide | 0.00175 | 0.000876 |
Phenols (4AAP) | 0.000175 | 0.0000584 |
Lead | 0.000263 | 0.0000876 |
Zinc | 0.000394 | 0.000131 |
40 C.F.R. §420.35