(a) Federal Requirements. National categorical pretreatment standards as promulgated by the USEPA pursuant to the Act shall be met by all industrial users which are subject to such standards.
(b) State Requirements. State requirements and limitations on discharges to the WEPF shall be met by all industrial users which are subject to those standards in any instance in which they are more stringent than Federal requirements and limitations or those in this chapter or any other applicable ordinance.
(c) Local Requirements. No industrial user shall discharge or cause or allow to be discharged into the sewerage system any pollutant in concentrations above those specifically permitted in a wastewater discharge permit issued by the City. Discharge permits shall impose maximum discharge concentration limits or mass-based limits where appropriate. In the absence of such specific wastewater discharge permit conditions, no person shall discharge any of the following pollutants, except as such pollutants may occur, and only in the concentrations such pollutants may occur, in the potable water supplied to the premises. Discharge of any pollutants allowed by permit shall not exceed the following limitations:
Pollutant | Concentration (mg/l) |
Ammonia (as N) | 15.0 |
Arsenic | 0.05 |
Cadmium | 0.01 |
Chromium (total) | 0.50 |
Chromium (hexavalent) | 0.01 |
Copper | 0.50 |
Cyanide (total) | 0.02 |
Lead | 0.05 |
Mercury | .0005 |
Nickel | 1.0 |
Oil (freon soluble) | 100.0 |
Selenium | 0.01 |
Silver | 0.03 |
Zinc | 1.0 |
Solids (total suspended) | 250.0 |
Solids (total dissolved) | 1500.0 |
(Ord. 95-20AC. Passed 4-3-95.)