All constituents and characteristics which singly or in combination may damage structures, impair the operation of the wastewater treatment plant, interfere with treatment process, or impair the quality of the receiving stream or its tributaries including, but not limited to, the following constituents and characteristics, with maximum concentration as follows:
(A) A person shall not discharge any wastewater with:
(1) A BOD5
concentration in excess of 250 mg/l (milligrams per liter);
(2) A suspended solids concentration in excess of 250 mg/l;
(3) A phosphorus concentration in excess of ten mg/l; and/or
(4) An ammonia-nitrogen combination in excess of 25 mg/l.
(B) No person shall discharge:
(1) Any wastewater containing concentration in excess of:
(a) A temperature higher than 150°F (65.5°C);
(b) A pH lower than 6.0 or higher than 9.0; and
(c) The following materials in excess of the discharge amounts shown:
Material | Discharge Amount |
Material | Discharge Amount |
Cadmium | 0.20 mg/l |
Copper | 2.00 mg/l |
Cyanide amenable to chlorination (CN, A) | |
For one day | 0.20 mg/l |
For any 30 consecutive day average | 0.08 mg/l |
Cyanide, total (CN, T) | |
For one day | 0.64 mg/l |
For any 30 consecutive day average | 0.24 mg/l |
Hexavalent chromium (Cr, VI) | |
For one day | 0.25 mg/l |
For any 30 consecutive day average | 0.09 mg/l |
Lead | 1.00 mg/l |
Mercury | 0.20 mg/l |
Nickel | 0.80 mg/l |
Oil and grease | |
Animal or vegetable origin | 200 mg/l |
Mineral or petroleum origin | 100 mg/l |
Phenolic compounds which cannot be removed by the town’s wastewater treatment process | 1.0 mg/l |
Silver | 0.10 mg/l |
Zinc | 0.50 mg/l |
(2) Any of materials described in division (B)(1) above in other concentration than stated if applicable state or federal regulations, or regulations of the Town Council, set different maximum concentrations;
(3) 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 Town Council; and/or
(4) Any water 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.
(C) The limitations imposed in division (B) above are found by the Town Council to be those attainable by the best practical technology. Limitations adopted by the Town Council shall in all cases be based on the best practical technology.
(Ord. 81-4, passed 11-2-1981) Penalty, see § 52.999