(A) The following pollutant limits are established to protect against pass through and interference and apply at the point where the wastewater is discharged to the POTW. No person shall discharge, or cause or permit to be discharged, wastewater containing in excess of the following instantaneous maximum allowable discharge limits.
Toxic Pollutant | Instantaneous Maximum Allowable Discharge Limit (mg/L) |
Toxic Pollutant | Instantaneous Maximum Allowable Discharge Limit (mg/L) |
Arsenic | 0.30 |
Cadmium | 0.10 |
Chromium | 4.00 |
Copper | 2.40 |
Cyanide | 1.71 |
Lead | 2.00 |
Mercury | 0.0002 |
Molybdenum | 3.74 |
Nickel | 4.94 |
Selenium | 0.27 |
Silver | 0.16 |
Zinc | 10.0 |
Oil and grease | 200 |
Total toxic organics | 2.13 |
pH | 5.5 to 11.0 Standard Units |
(B) All concentrations for metallic substances are for "total" metal unless indicated otherwise. The Director may impose mass limitations in addition to, or in place of, the concentration-based limitations above.
(Ord. 317, passed 10-16-1995; Am. Ord. O-21-932, passed 3-1-2021) Penalty, see § 51.999