Sec. 13-4-50.   Prohibited wastes.
   (a)   Toxic or nonbiodegradable waste or any wastes which could make the effluent not within state standards after providing conventional treatment shall not be discharged into the sewer systems. No drain accepting discharge from vehicle wash racks, filling stations, restaurants or other building sewers as specified by the City shall be connected to any sewer service line unless the discharge first passes through an acceptable grease, sand or oil interceptor.
   (b)   Except as provided herein, no person shall discharge, or cause to be discharged, any of the following described waters or wastes to any public sewer:
      (1)   Any liquid or vapor having temperatures higher than one hundred four (104) degrees Fahrenheit.
      (2)   Any water or waste which may contain more than one hundred (100) ppm by weight of animal or vegetable fat, oil or grease.
      (3)   Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid, gas, oil or grease.
      (4)   Any garbage that has not been properly shredded to less than one-half (½) inch in the largest dimension.
      (5)   Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastic, 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 and normal operation of the sewage works.
      (6)   Any waters or wastes having pH lower than 5.0 or higher than 9.0, or having any other corrosive or toxic property capable of causing damage or hazard to structures, equipment or personnel of the sewage works.
      (7)   Any water or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans, animals or fish, or create any hazard in the receiving waters of the sewage treatment plant effluent.
      (8)   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.
      (9)   Any noxious substances or malodorous waste, waters, gases or substance capable of creating a public nuisance, either in the public sewer or at the sewage treatment plant.
      (10)   A five-day B.O.D. concentration greater than three hundred (300) ppm.
      (11)   A concentration of more than three hundred (300) ppm of suspended solids.
      (12)   Concentrated wastes from septic tanks and portable sanitary devices.
      (13)   A peak flow rate greater than five (5) times the average flow rate.
      (14)   Any chemicals having a twenty-four-hour proportionate composite sample concentration at the point of discharge in excess of the following:
0.1 mg/l
5.0 mg/l
3.0 mg/l
2.0 mg/l
15.0 mg/l
10.0 mg/l
H 2 S (Hydrogen Sulfide)
1.0 mg/l
2.0 mg/l
(Ord. 334 §4.3, 2005)