(A) 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 North Shore Sanitary District that such wastes can harm either the sewers, sewage treatment process, or equipment; have an adverse effect on the receiving stream or otherwise endanger life, limb, or public property; or constitute a nuisance. In forming an opinion as to the acceptability of these wastes, the North Shore Sanitary District will give consideration to such factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant, and maximum limits established by regulatory agencies.
(B) The substances prohibited are:
(1) Any liquid or vapor having a temperature higher than 150°F.
(2) Any waters or wastes containing toxic or poisonous materials or oils, whether emulsified or not, in excess of 100 mg/1 or containing substances which may solidify or become viscous at temperatures between 32°F. and 150°F. (0° and 65°C.).
(3) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the approving authority.
(4) Any waters or wastes containing strong, acid, iron pickling wastes, or concentrated plating solutions whether neutralized or not.
(5) Any waters or wastes containing iron, chromium, copper, zinc, or similar objectionable or toxic substances, or wastes exerting an excessive chlorine requirement, to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the North Shore Sanitary District for such materials.
(6) Any waters or wastes containing phenols or other taste- or odor-producing substances, in concentrations exceeding the limits which may be established by the North Shore Sanitary District as necessary after treatment of the composite sewage, to meet the requirements of the state, federal, or other public agencies of jurisdiction for such discharge to the receiving waters.
(7) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the approving authority 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/1 as Hg at any time except as permitted by the North Shore Sanitary District in compliance with applicable state and federal regulations.
(10) Any cyanide in excess of 0.025 mg/1 at any time except as permitted by the North Shore Sanitary District 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 Fullers 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 such quantities as to constitute a significant load on the sewage treatment works; or
(d) Unusual volume of flow or concentrations of wastes constituting "slugs" as defined herein.
(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 such degree that the sewage treatment plant effluent cannot meet the requirements of agencies having jurisdiction over discharge to the receiving waters.
('79 Code, § 1108) (Ord. 1983-O-5, passed 4-19-83) Penalty, see § 50.999