(A) An industrial waste survey is required prior to a user discharging wastewater containing in excess of the following average discharge limits.
BOD | 300 mg/1 |
TSS | 300 mg/1 |
Total nitrogen | 50 mg/1 |
NH3 | 25 mg/1 |
Arsenic | 0.003 mg/1 |
Cadmium | 0.0015 mg/1 |
Chromium | 0.05 mg/1 (total chromium) |
Copper | 0.061 mg/l |
Cyanide | 0.015 mg/1 |
Lead | 0.003 mg/l |
Mercury | 0.0003 mg/1 |
Nickel | 0.021 mg/1 |
Silver | 0.005 mg/1 |
Zinc | 0.175 mg/1 |
(B) Industrial waste survey information will be used to develop user-specific local limits when necessary to ensure that the POTW’s maximum allowable headworks loadings are not exceeded for particular pollutants of concern. User-specific local limits for appropriate pollutants of concern shall be included in wastewater permits. The POTW Director may impose mass-based limits in addition to, or in place of concentration-based limits.
(Ord. passed 2-12-2013)