(A) All discharges shall conform to the requirements of this chapter.
(B) All discharges shall be prohibited except for those which meet the criteria for “domestic wastewater.” The BOD concentration shall not exceed 204 milligrams per liter, and suspended solids shall not exceed 240 milligrams per liter.
(C) All waste, wastewater and other substances containing phenols, hydrogen, sulfide or other taste- and odor-producing substances shall conform to the concentration limits established by the approving authority. After treatment of the composite wastewater, the concentration limits may not exceed the requirements established by state, federal or other agencies with jurisdiction over discharges to receiving waters.
(D) The maximum allowable concentrations of heavy metals stated in terms of milligrams per liter, determined on the basis of individual sampling in accordance with the Standard Methods, are as follows.
Heavy Metal
|
Concentration
|
Heavy Metal
|
Concentration
|
Arsenic | 0.05 mg/l |
Barium | 5.0 mg/l |
Boron | 1.0 mg/l |
Cadmium | 0.02 mg/l |
Chromium (total) | 5.0 mg/l |
Copper | 1.0 mg/l |
Lead | 0.1 mg/l |
Manganese | 1.0 mg/l |
Mercury | 0.005 mg/l |
Nickel | 1.0 mg/l |
Selenium | 0.02 mg/l |
Silver | 0.1 mg/l |
Zinc | 5.0 mg/l |
(E) No other heavy metals or toxic materials may be discharged into public sewers without a permit from the approving authority specifying the conditions of pretreatment, concentration volumes and other applicable provisions.
(Prior Code, § 17-302) Penalty, see § 53.99