12.0418 Additional discharge restrictions.

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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 enforcing officer that such wastes can harm either the sewers, sewage treatment process, or equipment, have an adverse effect on the receiving waters, or can otherwise endanger life, limb, public property, or constitutes a nuisance. In forming his opinion as to the acceptability of these wastes, the enforcing officer 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 other pertinent factors. The substances prohibited are:

(a) Any liquid or vapor having a temperature higher than 130?F;

(b) Any water or waste containing fats, wax, grease 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?F;

(c) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower or greater shall be subject to the review and approval of the enforcing officer;

(d) Any waters or wastes containing iron, chromium, copper, zinc, and 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 enforcing officer for such materials ;

(e) Any waters or wastes containing phenols or other taste-producing or odor-producing substances, in concentrations exceeding limits which may be established by the enforcing officer as necessary , after treatment of the composite sewage, to meet the requirements of the Commission, or other public agencies having jurisdiction for such discharge to the receiving waters;

(f) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the enforcing officer in compliance with applicable standards and regulations;

(g) Any waters or wastes having a pH in excess of 10.5;

(h) Materials which exert or cause:

(1) 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),

(2) Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions),

(3) Unusual BOD, chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works,

(4) Unusual volume of flow or concentration of wastes constituting “slugs” ; (i) Wastes removed from septic tanks and cesspools;

(5) 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 discharge requirements established by the government.

History: Env. Qual. Comm. Regs., err prior to 1975, § 10.18.