No person shall discharge or cause to be discharged to any of the city's sewer facilities any substances, materials, waters, or wastes in the quantities or concentrations which will do any of the following, or which have the following properties:
   (1)   Create a fire or explosion hazard, including but not limited to gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas.
   (2)   Cause corrosive damage or hazard to structures, equipment, or personnel of the sewer facilities, but in no case discharges having a pH lower than 5.0 or greater than 9.5 for any period of time. This requirement may be modified for facilities designed to accommodate greater ranges.
   (3)   Cause obstruction to the flow in sewers, or other interference with the operation of sewer facilities due to accumulation of solid or viscous materials.
   (4)   Constitute a rate of discharge or substantial deviation from normal rates of discharge, (slug discharge), sufficient to cause interference in the operation and performance of the sewer facilities.
   (5)   Contain heat in amounts which will accelerate the biodegradation of wastes, causing the formation of excessive amounts of hydrogen sulfide in the sewer or inhibit biological activity in the sewer treatment facilities. However, in no case shall the discharge of heat cause the temperature in the city sewer to exceed 58°C. (150°F.) or the temperature of the influent to the treatment facilities to exceed 40°C. (104°F.) unless the facilities can accommodate this heat.
   (6)   Contain more than 100 milligrams per liter of nonbiodegradable oils of mineral or petroleum origin.
   (7)   Contain floatable oils, fat, or grease.
   (8)   Contain noxious, malodorous gas or substances present in quantities that create a public nuisance or a hazard to life.
   (9)   Contain radioactive wastes in harmful quantities as defined by applicable state and federal regulations.
   (10)   Contain any garbage that has not been properly shredded.
   (11)   Contain any odor or color-producing substances exceeding concentration limits which may be established by the Public Works Department for purposes of meeting the city's sewer permit.
(Ord. 118, passed 10-23-80; Am. Ord. 1518, passed 11-6-14) Penalty, see § 10.99