No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with or pass through the operation or performance of the treatment works. These general prohibitions apply to all such users of the treatment works whether or not the user is subject to National Categorical Pretreatment Standards or any other national, state or local pretreatment standards or requirements. A user may not contribute the following substances to any POTW:
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 treatment works or to the operation of the treatment works. At no time shall two successive readings on an explosion hazard meter, at the point of discharge into the system (or at any point in the system) be more than five percent nor any single reading over 10 percent of the lower explosive limit (LEL) of the meter. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides and any other substances which the city, and the state or EPA has indicated is a fire hazard or hazard to the system.
B.
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 such as, but not limited to: grease, garbage with particles greater than one-half inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastics, gas, tar, asphalt residues, residues from refining, or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes.
C.
Any wastewater having a pH less than 5.5 or higher than 10.5 or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment, and/or personnel of the treatment works.
D.
Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with or pass through any wastewater treatment process, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the treatment works, 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 Section 307(a) of the Act.
E.
Any noxious or malodorous liquids, gases, or solids which either singly or by interaction with other wastes are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for maintenance and repair.
F.
Any substance which may cause the treatment works effluent or any other product of the treatment works 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 system cause the treatment works to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 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.
G.
Any substance which will cause the treatment works to violate its NPDES and/or State Disposal System Permit or the receiving water quality standards.
H.
Any wastewater with objectionable color not removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions.
I.
Any wastewater having a temperature of 60 degrees Celsius (140 degrees Fahrenheit) or more at the point of discharge into the sanitary sewer, or which may cause the temperature at the wastewater treatment plant to exceed 104 degrees Fahrenheit.
J.
Any pollutants, including oxygen demanding pollutants (BOD, etc.) released at a flow rate and/or pollutant concentration which a user knows or has reason to know will cause interference to the treatment works. In no case shall a slug load have a flow rate or contain concentration or qualities of pollutants that exceed for any time period longer than 15 minutes more than five times the average 24-hour concentration, quantities, or flow during normal operation.
K.
Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations.
L.
Any wastewater which causes a hazard to human life or creates a public nuisance.
M.
Any stormwater, seepage, cooling water or unpolluted process water.
N.
The contents of a swimming pool, except as approved by the Superintendent. When the Superintendent determines that a user(s) is contributing to the system, any of the above enumerated substances in such amounts as to interfere with the operation of the treatment works, the Superintendent shall: (1) advise the user(s) of the impact of the contribution on the treatment works; and (2) develop effluent limitation(s) for such user to correct the interference with the treatment works.
(Ord. 1097 (part), 1981; Ord. 1378 § 1(part), 1989)