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(1) No person shall discharge, or cause to be discharged, any storm water, surface water, groundwater, roof runoff, subsurface drainage, cooling water, or unpolluted industrial process water to any sanitary sewer.

(2) Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer:

(a) Any water or waste which may contain more than 100 parts per million, by weight, of fat, oil or grease;

(b) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;

(c) Any garbage that has not been properly shredded;

(d) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, petroleum products, antifreeze, wood, paunch, manure or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works;

(e) Any waters or wastes having a pH lower than five and five-tenths or higher than eight and five-tenths or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works;

(f) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with sewage treatment process, constitute a hazard to humans or animals or create any hazard in the receiving waters of the sewer treatment plant;

(g) Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant;

(h) Any noxious or malodorous gas or substance capable of creating a public nuisance.

(3) Grease, oil and sand interceptors shall be provided when, in the opinion of the approving authority, they are necessary for the proper handling of liquid wastes containing grease, in excessive amounts, or any flammable wastes, sand and other harmful ingredients. All interceptors shall be of a type and capacity approved by the approving authority and shall be located as to be readily and easily accessible for cleaning and inspection. (Ord. 524 § 1, 2017)