No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer, ditch, drain or culvert:
(a) Any water, wastes or vapor containing heat in amounts which will accelerate the biodegradation of wastes, cause the formation of excessive amounts of hydrogen sulfide in the sewage works, or inhibit biological activity in the wastewater treatment plant. In no case shall heated discharges cause the temperature in the public sewer to exceed sixty-five degrees Celsius (150 degrees Fahrenheit), or the temperature of the influent at the treatment plant to exceed forty degrees Celsius (104 degrees Fahrenheit);
(b) Any water or wastes containing substances that will solidify or become discernibly viscous at temperatures between thirty and 150 degrees Fahrenheit including, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal or metal hydroxide slurries, glass, rags, feathers, tar asphalt, plastics, wood, asphaltic materials, paunch manure, hair and fleshings, entrails, beer or distillery spent grains, chemical residues, paint residues, cannery waste bulk solids, or any other solid or viscous substance capable of causing obstruction to the flow in sewers, or other interference with the operation of the sewage works;
(c) Any water or wastes containing edible oil and grease exceeding an average of 100 mg/l of hexane-soluble matter;
(d) Any water or wastes containing nonbiodegradable grease or oils of mineral or petroleum origin in amounts that can pass through or cause interference at the POTW. Industrial cooling water which may be polluted with insoluble oils, grease or suspended solids shall be pretreated to remove the pollutants and the resultant wastewater shall be discharged according to the provisions of Section 923.10;
(e) Any water or wastes which will create a fire or explosion hazard in the POTW, including, but not limited to wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade using the test method specified in 40 CFR 261.21; or any pollutants which result in the presence of toxic gases, vapors or fumes within the POTW in a quantity that may cause acute worker health and safety problems;
(Ord. 91-30. Passed 3-11-91.)
(f) Any water or wastes containing more than 10 mg/l of the following gases: hydrogen sulfide, sulfur dioxide or nitrous oxide;
(g) Any garbage that has not been properly shredded to a degree that all particles will be carried freely under normal flow conditions prevailing in the public sewer;
(h) Any water or wastes containing phenolic compounds in excess of 1.00 mg/l or other taste or odor-producing substances unless approved in writing by the Director. These limits may be modified if the aggregate of contributions throughout the service area create treatment difficulties or produce a prohibitive effluent discharge to receiving waters;
(Ord. 82-211. Passed 12-13-82.)
(i) Any water or wastes, acid or alkaline in reaction, having corrosive properties capable of causing damage or hazard to structures, equipment and personnel of the sewage works. Free acids or alkalies of such wastes must be neutralized at all times, within the permissible pH range, 5.5 to 11.0;
(Ord. 98-89. Passed 6-22-98.)
(j) Any water or wastes containing strong acid, iron pickling wastes or concentrated plating solution whether neutralized or not unless approved in writing by the Director; (Ord. 82-211. Passed 12-13-82.)
(k) Any water or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, which injure or interfere with any sewage treatment process; constitute a hazard to humans or animals; create a public nuisance; prevent entry into the sewers for maintenance and repair; create any hazard in the receiving waters of the wastewater treatment plant; or cause the treatment plant effluent, residues, sludges or scums to be unsuitable for reclamation and reuse; or exceed the limitations set forth in National Categorical Pretreatment Standards as promulgated in Title 40, Code of Federal Regulations.
(Ord. 84-159. Passed 11-26-84.)
(l) Any slugload, as defined in Chapter 922 of any pollutant, including oxygen-demanding pollutants, causing interference in the sewage works or amenable to treatment only to a degree such that the wastewater treatment plant effluent cannot meet the requirements of the City's NPDES permit;
(m) Any water or wastes containing more than 0.02 mg/l total identifiable chlorinated hydrocarbons;
(n) Any water or wastes which cause a detrimental environmental impact or cause the quality of the wastewater treatment plant effluent to violate the NPDES permit limitations or applicable water quality standards;
(o) Viable pathogenic organisms in such quantities as to be a hazard to public health; and
(p) Any toxic pollutants that exceed the specific limitations of Section 923.12.
(Ord. 82-211. Passed 12-13-82.)
(q) Holding tank, trucked or hauled wastes, except at discharge points designated by the Director in accordance with Section 923.04 of this code.
(Ord. 15-123. Passed 11-23-15.)