(A) No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
(1) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas.
(2) Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance or create any hazard in the receiving waters of the sewage treatment plant.
(3) Any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to public structures, equipment and personnel of the sewage works.
(4) Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, mild containers and the like either whole or ground by garbage grinders.
(B) No person shall discharge or cause to be discharged the following described substances, materials, waters or wastes if it appears likely, in the opinion of the Superintendent of the Sewerage Department, the wastes can harm either the sewers, sewage treatment process or equipment, have an adverse effect on the receiving stream or can otherwise endanger life, limb, public property or constitute a nuisance. In forming an opinion as to the acceptability of these wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process capacity of sewage treatment plant, degree of treata- bility of wastes in the sewage treatment plant and maximum limits established by regulator agencies. Those prohibited substances are:
(1) Any liquid vapor having a temperature higher than 150° Fahrenheit.
(2) Any water or wastes containing toxic of poisonous materials or oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 32° and 150° Fahrenheit.
(3) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of 3/4 horsepower or greater shall be subject to the review and approval of the Superintendent.
(4) Any waters or wastes containing strong acid, iron pickling wastes or concentrating plating solutions, whether neutralized or not.
(5) Any waters or wastes containing iron, chromium, copper, zinc or other similar objectionable or toxic substances or wastes exerting an excessive chlorine requirement to the degree that any material received in the composite sewage at the sewage treatment works exceeds the limits established by the Superintendent for the materials.
(6) Any waters or wastes containing phenols or other taste- or odor-producing substances in concentrations exceeding limits which may be established by the Superintendent as necessary after treatment of the composite sewage to meet the requirements of the state, federal or other public agencies of jurisdiction for discharge into the receiving waters.
(7) Any radioactive wastes or isotopes of a half-life or concentration that may exceed limits established by the Superintendent in compliance with applicable state or federal regulations.
(8) Any waters or wastes having a pH in excess of 9.5.
(9) Any mercury or any of its compounds in excess of 0.0005 mg/l as Hg at any time except as permitted by the Superintendent in compliance with applicable state and federal regulations.
(10) Any cyanide in excess of 0.025 mg/l at any time except as permitted by the Superintendent in compliance with applicable state and federal regulations.
(11) Materials which exert or cause:
(a) Unusual concentrations of inert suspended solids (such as, but not limited to, Fuller's earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate.)
(b) Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions)
(c) Unusual BOD, chemical oxygen demand or chlorine requirements in quantities as to constitute a significant load on the sewage treatment works.
(d) Unusual volume of flow or con- centrations of wastes constituting slugs.
(12) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed or are amenable to treatment only to the degree the sewage treatment plant effluent cannot meet the requirements of agencies having jurisdiction over discharge of the receiving waters.
('74 Code, § 27-80) (Ord. 1030, passed 10-16-84) Penalty, see § 51.99