No person shall discharge wastewater containing in excess of:
Daily Maximum Allowable Concentration (mg/l) Average | Allowable Concentration* (mg/l) |
Daily Maximum Allowable Concentration (mg/l) Average | Allowable Concentration* (mg/l) | ||
(1) | Arsenic | 0.088 | 0.044 |
(2) | Cadmium | 0.026 | 0.013 |
(3) | Chromium | 1.89 | 0.945 |
(4) | Copper | 0.789 | 0.363 |
(5) | Cyanide, total | 0.042 | 0.021 |
(6) | Iron | 10.0 | — |
(7) | Lead | 0.34 | 0.170 |
(8) | Mercury | ND** | ND** |
(9) | Nickel | 1.1 | 0.504 |
(10) | PCB | 0.0005 | — |
(11) | Phosphorus, total | 20.0 | — |
(12) | Silver | 0.006 | 0.003 |
(13) | Zinc | 2.4 | 1.57 |
* Average allowable concentration shall mean the average of the four most recent consecutive sampling events. **ND: No detectable trace (less than method detection limit). | |||
(Ord. No. 144, 5-16-2005)