40 C.F.R. § 420.123
Except as provided in 40 CFR 125.30 through 125.32 , any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
Subpart L
| Pollutant or pollutant property | BAT effluent limitations | |
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Kg/kkg (pounds per 1,000 lb) of product | ||
| Lead | 0.00113 | 0.000376 |
| Zinc | 0.00150 | 0.000500 |
| Chromium (hexavalent)1 | 0.000150 | 0.0000501 |
1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewater from the chromate rinse step.
Subpart L
| Pollutant or pollutant property | BAT effluent limitations | |
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Kg/kkg (pounds per 1,000 lb) of product | ||
| Lead | 0.00451 | 0.00150 |
| Zinc | 0.00601 | 0.00200 |
| Chromium (hexavalent)1 | 0.000601 | 0.000200 |
1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.
Subpart L
| Pollutant or pollutant property | BAT effluent limitations | |
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Kg per day | ||
| Lead | 0.0368 | 0.0123 |
| Zinc | 0.0491 | 0.0164 |
| Chromium (hexavalent)1 | 0.00490 | 0.00163 |
1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.
The above limitations shall be applicable to each fume scrubber associated with any of the coating operations specified above.
40 C.F.R. §420.123