(A) General discharge prohibitions.
(1) No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will pass through or interfere with the operation and performance of the WWF. These general prohibitions apply to all such users of a WWF whether or not the user is subject to national categorical pretreatment standards or any other national, state or local pretreatment standards or requirements. Violations of these general and specific prohibitions or the provisions of this section may result in the issuance of an industrial pretreatment permit, surcharges, discontinuance of water and/or sewer service and other fines and provisions of §§ 51.10 or 51.29.
(2) A user may not contribute the following substances to any WWF:
(a) Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the WWF or to the operation of the WWF. Prohibited flammable materials including, but not limited to, wastestreams with a closed cup flash point of less than 140°F or 60°C using the test methods specified in 40 C.F.R. § 261.21. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromate, carbides, hydrides and sulfides and any other substances which the city, the state or EPA has notified the user is a fire hazard or a hazard to the system;
(b) Any wastewater having a pH less than 5.5 or higher than 9.5 or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment and/or personnel of the WWF;
(c) Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities including, but not limited to: grease, garbage with particles greater than one half inch in any dimension, waste from animal slaughter, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastics, mud, or glass grinding or polishing wastes;
(d) Any pollutants, including oxygen demanding pollutants (BOD and the like) released at a flow rate and/or pollutant concentration which will cause interference to the WWF;
(e) Any wastewater having a temperature which will inhibit biological activity in the WWF treatment plant resulting in interference, but in no case wastewater with a temperature at the introduction into the WWF which exceeds 40°C (104°F) unless approved by the state;
(f) Petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass through;
(g) Pollutants which result in the presence of toxic gases, vapors or fumes within the WWF in a quantity that may cause acute worker health and safety problems;
(h) Any wastewater containing any toxic pollutants, chemical elements or compounds in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans, including wastewater plant and collection system operators, or animals, create a toxic effect in the receiving waters of the WWF, or to exceed the limitation set forth in a categorical pretreatment standard. A toxic pollutant shall include but not be limited to any pollutant identified pursuant to § 307(a) of the Act;
(i) Any trucked or hauled pollutants except at discharge points designated by the WWF;
(j) Any substance which may cause the WWF’s effluent or any other product of the WWF such as residues, sludges or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case, shall a substance discharged to the WWF cause the WWF to be in non- compliance with sludge use or disposal criteria, 40 C.F.R. Part 503, guidelines or regulations developed under § 405 of the Act; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act, or state criteria applicable to the sludge management method being used;
(k) Any substances which will cause the WWF to violate its NPDES permit or the receiving water quality standards;
(l) Any wastewater causing discoloration of the wastewater treatment plant effluent to the extent that the receiving stream water quality requirements would be violated, such as, but not limited to, dye wastes and vegetable tanning solutions;
(m) Any waters or wastes causing an unusual volume of flow or concentration of waste constituting “slug” as defined herein;
(n) Any waters containing any radioactive wastes or isotopes of such halflife or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations;
(o) Any wastewater which causes a hazard to human life or creates a public nuisance;
(p) Any waters or wastes containing animal or vegetable fats, wax, grease or oil, whether emulsified or not, which cause accumulations of solidified fat in pipes, lift stations and pumping equipment, or interfere at the treatment plant;
(q) Detergents, surfactants, surface-acting agents or other substances which may cause excessive foaming at the WWF or pass through of foam;
(r) Wastewater causing, alone or in conjunction with other sources, the WWF to fail toxicity tests; and
(s) Any storm water, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer. Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers, or to a natural outlet approved by the Superintendent and the State Department of Environment and Conservation. Industrial cooling water or unpolluted process waters may be discharged on approval of the Superintendent and the State Department of Environment and Conservation, to a storm sewer or natural outlet.
(B) Local limits. In addition to the general and specific prohibitions listed in this section, users permitted according to §§ 51.25 through 51.35 may be subject to numeric and best management practices as additional restrictions to their wastewater discharge in order to protect the WWF from interference or protect the receiving waters from pass through contamination.
(C) Restrictions on wastewater strength. No person or user shall discharge wastewater which exceeds the set of standards provided in Table A: Plant Protection Criteria, unless specifically allowed by their discharge permit according to §§ 51.25 through 51.35 of this chapter. Dilution of any wastewater discharge for the purpose of satisfying these requirements shall be considered in violation of this subchapter.
Table A: Plant Protection Criteria | |
Parameter | Monthly Maximum Concentration (mg/l) |
Table A: Plant Protection Criteria | |
Parameter | Monthly Maximum Concentration (mg/l) |
Arsenic | 0.100 mg/l |
Benzene | 0.013 mg/l |
Boron | 10.0 mg/l |
Cadmium | 0.033 mg/l |
Carbon Tetrachloride | 1.500 mg/l |
Chloroform | 0.224 mg/l |
Chromium (total) | 1.000 mg/l |
Copper | 0.160 mg/l |
Cyanide | 0.062 mg/l |
Ethybenzene | 0.040mg/l |
Lead | 0.281 mg/l |
Manganese | 10.0 mg/l |
Mercury | 0.002 mg/l |
Methylene chloride | 0.096 mg/l |
Molybdenum | 0.019 mg/l |
Naphthalene | 0.013 mg/l |
Nickel | 0.250 mg/l |
Phenol | 0.455 mg/l |
Selenium | 0.014 mg/l |
Silver * | 0.063 mg/l |
Tetrachloroethylene | 0.139 mg/l |
Toluene | 0.214 mg/l |
Total Phthalate | 0.170 mg/l |
Trichlorethlene | 0.100 mg/l |
1,1,1-Trichloroethane | 0.250 mg/l |
1,2 Transdichloroethylene | 0.008 mg/l |
Zinc | 0.190 mg/l |
* Silver is daily max | |
(Ord. 699, passed 10-26-2009; Ord. 784, passed 4-25-2016)