Unless otherwise agreed to in writing by the city, no person shall discharge or cause to be discharged the following described substances, materials or wastes into the public sewer:
A. Any solid, liquid or gas having a temperature higher than one hundred fifty degrees Fahrenheit (150°F) (65°C).
B. Any gasoline, benzene, naphtha, fuel oil, petroleum products or derivatives, mineral oil or other flammable or explosive liquid, solid or gas.
C. Any water or wastes containing fats, wax, grease or oils, whether emulsified or not, in excess of one hundred milligrams per liter (100 mg/l) or containing substances that will solidify or become discernibly viscous at temperatures between thirty two degrees (32°) and one hundred fifty degrees Fahrenheit (150°F) (0° and 65°C). (Ord. 75-2, 9-2-1975)
D. Any garbage that has not been properly shredded. (Ord. 75-2, 9-2-1975; amd. Ord. 05-11, 9-6-2005)
E. Any ashes, bones, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch manure, blood, hair and fleshings, entrails, beer or distillery slops, chemical residues, paint, or ink residues, cannery wastes, tannery wastes, bulk solids, or any other solid or viscous substance capable of causing obstruction to the flow in sewers or interference with the proper operation of the wastewater facilities. (Ord. 75-2, 9-2-1975)
F. Any waters or wastes having a pH lower than five and five- tenths (5.5) or greater than nine and five-tenths (9.5), or having any other corrosive property capable of causing damage or hazard to wastewater facilities, equipment or personnel, or create any hazard in the receiving stream, including, but not limited to, cyanides in excess of 0.025 milligrams per liter as cyanides or in excess of 1.0 milligrams per liter of hydrogen sulfide in the wastewater discharged to the public sewers which is subject to change to come into compliance with applicable state and federal regulations. (Ord. 05-11, 9-6-2005)
G. Any water or wastes containing strong acid pickling wastes or concentrated plating solutions.
H. Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances to such degree that any such material received in the composite wastewater exceeds the limits established by the administrative officer in compliance with applicable state or federal regulations.
I. Any radioactive wastes or isotopes of such half-life or concentrations as may exceed limits established by the administrative officer in compliance with applicable state or federal regulations.
J. Any water or wastes containing phenols or other waste or odor producing substances, in such concentrations exceeding limits established by the administrative officer in compliance with regulations of state or federal agencies having jurisdiction over discharge to the receiving streams.
K. Any water, wastes, materials or substances which either singly or by interaction with other water or wastes in the sewerage system, release obnoxious or malodorous gases, form suspended solids in unusual concentration or create any other condition deleterious to structures and treatment processes or which is capable of creating a public nuisance or hazard to public health.
L. Materials which exert or cause:
1. 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).
2. Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions). (Ord. 75-2, 9-2-1975)
3. BOD greater than two hundred milligrams per liter (200 mg/l) and or having SS greater than two hundred forty milligrams per liter (240 mg/l), except that "industrial wastes", as defined herein, may be discharged into the public sewer providing that the person so discharging notifies the administrative officer in advance thereof, and thereupon fully qualifies and complies with all the terms and provisions of this chapter relating to industrial wastes; however, the person first must have received approval by action of the city council to dump such wastes. Approval is revokable at any time by the city council. (Ord. 75-2, 9-2-1975; amd. 1996 Code; Ord. 05-11, 9-6-2005)
4. Volume of flow or concentration of wastes constituting a slug. A "slug" is defined as the intermittent release or discharge of industrial waste. (Ord. 75-2, 9-2-1975; amd. 1996 Code)
M. Wastes or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amendable to treatment only to such degree that the wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving stream. (Ord. 75-2, 9-2-1975)