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Article II. General Requirements
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A. General Prohibitions. No user shall introduce or cause to be introduced into the POTW 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 requirements.

B. Specific Prohibitions. No user shall introduce or cause to be introduced into the POTW the following pollutants, substances, or wastewater:

1. Pollutants which create a fire or explosive hazard in the POTW, including, but not limited to, wastestreams with a closed-cup flashpoint of less than one hundred forty degrees Fahrenheit (sixty degrees Celsius) using the test methods specified in 40 CFR 261.21;

2. Wastewater having a pH less than 5.0 or more than 11.0, or otherwise causing corrosive structural damage to the POTW or equipment;

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-quarter inch;

4. Pollutants, including oxygen-demanding pollutants (BOD, COD, etc.), 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 the POTW;

5. Wastewater having a temperature 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 one hundred four degrees Fahrenheit (forty degrees Celsius) unless the approval authority, upon the request of the POTW, approves alternate temperature limits;

6. Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through;

7. Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems;

8. Trucked or hauled pollutants (except domestic sewage or septic tank wastes) unless authorized by the director, and at discharge points designated by the city;

9. 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 or a hazard to life, or to prevent entry into the sewers for maintenance or repair;

10. 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 ten percent from the seasonably established norm for aquatic life;

11. Wastewater containing any radioactive wastes or isotopes except as specifically approved by the director in compliance with applicable state or federal regulations;

12. Stormwater, surface water, ground water, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water, and unpolluted wastewater, unless specifically authorized by the director;

13. Any sludges, screenings, or other residues from the pretreatment of industrial or commercial wastes or from industrial or commercial processes, except as authorized by the director;

14. Medical wastes, except as specifically authorized by the director;

15. Wastewater causing, alone or in conjunction with other sources, the treatment plant’s effluent to fail a toxicity test;

16. Detergents, surface-active agents, or other substances in amounts which may cause excessive foaming in the POTW;

17. 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 POTW or to the operation of the POTW. At no time shall two successive readings on an explosion meter, at the point of discharge into the system (or at any point in the system), be more than five percent nor any single reading over ten percent of the lower explosive limit (LEL) of the meter;

18. Animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dusts, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastics, gas, tar asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes;

19. Any substance which will cause the POTW to violate its NPDES and/or other disposal system permits;

20. Any wastewater which in the opinion of the director can cause harm either to the sewers, sewage treatment process, or equipment; have an adverse effect on the receiving stream; or otherwise endanger life, limb, or public property, or constitute a nuisance, unless allowed under special agreement by the director (except that no special waiver shall be given from categorical pretreatment standards);

21. The contents of any tank or other vessel owned or used by any person in the business of collecting or pumping sewage, effluent, septage, or other wastewater unless said person has first obtained testing and approval as may be generally required by the city of Everett and paid all fees assessed for the privilege of said discharge;

22. Any hazardous or dangerous wastes as defined in rules published by the state of Washington (Chapter 173-303 WAC) and/or in the EPA rules (40 CFR Part 261);

23. Persistent pesticides and/or pesticides regulated by the Federal Insecticide Fungicide Rodenticide Act (FIFRA);

24. Any substance which may cause the POTW’s effluent or treatment residues, sludges, or scums to be unsuitable for reclamation and reuse, or to interfere with the reclamation process;

25. Fats, oils and grease in amounts that may cause obstructions or maintenance problems in the collection/conveyance system, or interference in the POTW.

Pollutants, substances, or wastewater prohibited by this section shall not be processed or stored in such a manner that they are likely to be discharged to the POTW unless the user has in place an accidental spill prevention plan (ASPP)/slug control plan. (Ord. 3071-08 § 2.1, 2008.)