(A) No person shall discharge any substances directly into a manhole or other opening in a community sewer other than through an approved building sewer unless, upon a written application by the user and the payment of the applicable user charges and fees, the city issues a permit for such direct discharges.
(B) No person shall introduce or cause to be introduced into the POTW, directly or indirectly, any pollutant or wastewater which causes pass through or interference. These general prohibitions apply to all users of the POTW whether or not they are subject to categorical pretreatment standards or any other national, state, or local pretreatment standards or requirement. Furthermore, no person may contribute the following substances to the POTW:
(1) Pollutants which create a fire or explosive hazard in the municipal wastewater collection and POTW, including, but not limited to, wastestreams with a closed-cup flashpoint of less than 140° F (60° C) using the test methods specified in 40 CFR 261.21.
(2) Any wastewater having a pH less than 5.0 or more than 12.5, or otherwise causing corrosive structural damage to the POTW or equipment, or endangering city personnel.
(3) Solid or viscous substances in amounts which will cause obstruction of the flow in the POTW resulting in interference, but in no case solids greater than one-inch or 25.4 millimeters in any dimension.
(4) Any wastewater containing pollutants, including oxygen demanding pollutants (BOD, and the like), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with either the POTW, or any wastewater treatment or sludge process; or which will constitute a hazard to humans or animals.
(5) Any wastewater having a temperature greater than 150° F (65.5° C), or which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed 104° F (40° C).
(6) Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through, but in no case shall the discharge exceed 25 mg/l.
(7) Any pollutants which result in the presence of toxic gases, vapors or fumes within the POTW in a quantity that may cause worker health and safety problems.
(8) Any trucked or hauled pollutants, except at discharge points designated by the city in accordance with § 50.039 of this chapter.
(9) Any noxious or malodorous liquids, gases, solids, or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance, a hazard to life, or to prevent entry into the sewers for maintenance and repair.
(10) Any wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts color to the treatment plant’s effluent thereby violating the city’s NPDES permit. Color (in combination with turbidity) shall not cause the treatment plant effluent to reduce the depth of the compensation point for photosynthetic activity by more than 10% from the seasonably established norm for aquatic life.
(11) Any wastewater containing any radioactive wastes or isotopes, except as specifically approved in writing by the City Manager in compliance with applicable state or federal regulations.
(12) Stormwater, surface water, ground water, artisan well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water, and unpolluted industrial wastewater, unless specifically authorized in writing by the City Manager.
(13) Any sludges, screenings, or other residues from the pretreatment of industrial wastes.
(14) Any medical wastes, except as specifically authorized in writing by the City Manager in a wastewater discharge permit.
(15) Any wastewater causing the treatment plant’s effluent to fail a toxicity test.
(16) Any wastes containing detergents, surface active agents, or other substances which may cause excessive foaming in the POTW.
(17) Any discharge of fats, oils, or greases of animal or vegetable origin is limited to 100 mg/l.
(C) Wastes prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW. All floor drains located in process or materials storage areas must discharge to the industrial user’s pretreatment facility before connecting with the POTW.
(‘63 Code, § 5-5.201) (Ord. 571-C.S., passed 6-2-94; Am. Ord. 737-C.S., passed 2-3-09; Am. Ord. 775-C.S., passed 12-20-11) Penalty, see § 50.999