A. General prohibitions (C.F.R. 403.5(a)1). A user may not introduce into a POTW any pollutant(s) which cause pass through or interference. These general prohibitions and the specific prohibitions in this section apply to each user introducing pollutants into a POTW whether or not the user is subject to other national pretreatment standards or any national, state, or local pretreatment requirements.
B. Specific prohibitions (C.F.R. 403.5(b)). No user shall introduce or cause to be introduced into the POTW the following pollutants, substances, or wastewater;
1. Any liquids, solids, or gases which by reason of their nature or quantity are, or may be, sufficient, either alone or by interaction with other substances, to cause fire or explosion or be injurious in any other way to the municipal wastewater system. Included in this prohibition are wastestreams with a closed cup flash point of less than 140° F (60° C) using the test methods prescribed in 40 C.F.R. 261.21.
2. Solid or viscous substances in amounts which will cause interference with the flow in a sewer.
3. Any fat, oils or greases, including but not limited to petroleum oil, non-biodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through.
4. Any wastewater from a grab sample having a pH less than 6.0 su., or more than 10.0 su., or which may otherwise cause corrosive structural damage to the POTW, but in no case discharges with a pH lower than 5.0, unless the sewerage treatment system is specifically designed to accommodate such discharges.
5. Any wastewater containing pollutants, including oxygen-demanding pollutants (BOD, and the like), in sufficient quantity (flow or concentration), either singly or by interaction with other pollutants, to pass through or interfere with the municipal wastewater system, any wastewater treatment or sludge process, or constitute a hazard to humans or animals.
6. Any noxious or malodorous liquids, gases, or solids or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for maintenance and repair.
7. Any substance which may cause the treatment plant effluent or any other residues, sludge, or scum, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case, shall a substance discharged to the system cause the city to be in noncompliance with sludge use or disposal regulations or permits issued under Section 405 of the Act; the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act, or other state requirements applicable to the sludge use and disposal practices being used by the city.
8. 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 plants effluent thereby violating the city's NPDES permit.
9. Heat in amounts that will inhibit biological activity in the POTW resulting in Interference, but in no case wastewater that causes the temperature at the introduction into the treatment plant to exceed 104° F (40° C).
10. Any wastewater containing any radioactive waste or isotopes except as specifically approved by the Public Works Director or other designee in compliance with applicable state and federal regulations.
11. Any pollutants, which result in the presence of toxic gases, vapor or fumes within the POTW in a quantity that may cause acute worker health and safety problems.
12. Any hauled pollutants, except at discharge points designated by the city in accordance with § 13.16.040.
13. Storm water, surface water, groundwater, artisan well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, cooling water and unpolluted industrial wastewater, unless specifically authorized by the Public Works Director or other designee.
14. Any sludge, screening, or other residues from the pretreatment of industrial wastes.
15. Any medical wastes, except as specifically authorized by the Public Works Director or other designee in a wastewater permit.
16. Any material containing ammonia, ammonia salts, or other chelating agents, which will produce metallic complexes that interfere with the municipal wastewater system.
17. Any material identified as hazardous waste according to 40 C.F.R. Part 261 except as specifically authorized by the Public Works Director or other designee.
18. Any wastewater causing the treatment plant effluent to demonstrate toxicity to test species during a bio-monitoring evaluation.
19. Recognizable portions of the human body or animal anatomy.
20. Any wastes containing detergents, surface-active agents, or other substances, which may cause excessive foaming in the municipal wastewater system.
21. Wastewater discharging from dental facilities which contain mercury shall be provided with an approved amalgam separator.
22. Any wastewater from dry cleaning machines.
C. Waste prohibited by this section shall not be processed or stored in such a manner that these waste could be discharged to the POTW.
(Ord. 1413 § 2.1, passed 4-1-2015)