(A) A person shall not discharge any wastewater containing waste concentration in excess of those allowed under the applicable national pretreatrnent standards.
(B) If no pretreatrnent standard exists, the following concentration prohibitions shall apply, unless modified by the Board:
(1) A temperature higher than 150° F (65.5° C);
(2) A pH lower than 6.0 or higher than 9.0;
(3) 0.20 mg/l; cadmium;
(4) 0.25 mg/l hexavalent chromium (Cr, VI) for one day, or 0.09 mg/l hexavalent chromium for any 30-consecutive day average;
(5) 2 mg/l copper;
(6) 0.20 mg/l cyanide amenable to chlorination (CN, A) for one day, or 0.08 mg/l cyanide amenable to chlorination for any 30-consecutive day average;
(7) 0.64 mg/l cyanide, total (CN, T) for one day, or 0.24 mg/l cyanide total for any 30-consecutive day average;
(8) 1.00 mg/l lead;
(9) 0.20 mg/l mercury;
(10) 0.80 mg/l nickel;
(11) 0.10 mg/l silver;
(12) 1 mg/l zinc;
(13) 200 mg/l oil and grease of animal or vegetable origin;
(14) 100 mg/l oil and grease of mineral or petroleum origin;
(15) 1 mg/l phenolic compounds which cannot be removed by the city's wastewater treatment process;
(16) Other concentrations than stated above are prohibited if applicable state or Federal regulations or regulations of the Board set different maximum concentrations;
(17) Any other substance or concentration thereof prohibited to all users or classes of users by state or Federal law, or regulation now or hereafter adopted by the Board; and/or
(18) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process or to constitute a hazard to humans or animals, or to create any hazard in the receiving waters of the treatment plant.
(Ord. 599, passed 12-3-1984; Am. Ord. 724, passed 1-18-1993; Am. Ord. 730, passed 3-15-1993; Am. Ord. 1130, passed 11-30-2017) Penalty, see § 53.999