(A) No person shall discharge or cause to be discharged to any of the city’s wastewater facilities any substances, materials, waters or wastes in quantities or concentrations that will:
(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 wastewater facilities and in no case will discharges be allowed with a pH lower than six or greater than ten;
(3) Cause obstruction to the flow in sewers, or other interference with the operation of wastewater 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 wastewater facilities;
(5) Contain heat in amounts that will accelerate the biodegradation of wastes, causing excessive amounts of hydrogen sulfide to form in the wastewater sewer, or inhibit biological activity in the wastewater treatment facilities, and in no case shall the discharge of heat cause the temperature in the city wastewater sewer to exceed 58°C (150°F) or the temperature of the influent to the treatment facilities to exceed 40°C (104°F);
(6) Contain more than 100 milligrams per liter of non-biodegradable oils of mineral or petroleum origin;
(7) Contain floatable oils, fat or grease;
(8) Contain noxious, malodorous gas or substance 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 guidelines;
(10) Contain any garbage that has not been properly shredded to a size or shape that causes no operational problems; and
(11) Contain any odor or color-producing substances exceeding concentration limits that may be established by the Utilities Director and the city’s NPDES permit.
(B) If in establishing discharge restrictions, discharge limits or pretreatment standards pursuant to this article, the Utilities Director establishes concentration limits to be met by an industrial user, the Utilities Director in lieu of concentration limits may establish mass limits of comparable stringency for an individual industrial user at the request of such user.
(Ord. 481-99, passed 2-15-1999) Penalty, see § 10.99