(A) No discharge may contain concentrations of heavy metals greater than amounts specified in this section.
(B) The maximum allowable concentrations of heavy metals stated in terms of milligrams per liter (mg/l), for discharge to inland water, determined on the basis of individual sampling in accordance with Standard Methods, are as follows:
Not to Exceed (Grab Sample)
(1) Arsenic 0.3 mg/l
(2) Barium 4.0 mg/l
(3) Boron 1.0 mg/l
(4) Cadmium 0.2 mg/l
(5) Chromium 5.0 mg/l
(6) Copper 2.0 mg/l
(7) Lead 1.5 mg/l
(8) Manganese 3.0 mg/l
(9) Mercury 0.01 mg/l
(10) Nickel 3.0 mg/l
(11) Selenium 0.2 mg/l
(12) Silver 0.2 mg/l
(13) Zinc 6.0 mg/l
(C) No other heavy metals or toxic materials may be discharged into public sewers without a permit from the approving authority specifying conditions of pretreatment, concentrations, volumes, and other applicable provisions.
(D) Prohibited heavy metals and toxic materials include but are not limited to:
(1) Antimony.
(2) Beryllium.
(3) Bismuth.
(4) Cobalt.
(5) Molybdenum.
(6) Uranyl ion.
(7) Rhenium.
(8) Strontium.
(9) Tellurium.
(10) Herbicides.
(11) Fungicides.
(12) Pesticides.
(Ord. 041718, passed 4-17-2018)