A. Pollutants which create a fire or explosive hazard in the POTW, including, but not limited to, waste streams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees centigrade using the test methods specified in 40 CFR 261.21;

B. Wastewater having a pH value of less than five or more than 11 (unless in compliance with LMC 14.60.319) or otherwise causing corrosive structural damage to the POTW or equipment;

C. Solid or viscous substances in amounts which will cause obstruction of the flow in the collection/conveyance system or with the POTW treatment plant resulting in interference, but in no case solids greater than one-quarter inch;

D. Pollutants, including biochemical and chemical 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 treatment plant;

E. Wastewater having a temperature which will inhibit biological activity at the POTW treatment plant resulting in interference. In no case shall wastewater which causes the temperature at the introduction into the POTW treatment plant to exceed 104 degrees Fahrenheit or 40 degrees centigrade, or the temperature to exceed 150 degrees Fahrenheit or 65 degrees centigrade at the point of discharge to the public sewers, be allowed unless approved by the director;

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

G. 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 issues;

H. Trucked or hauled pollutants (including domestic sewage or septic tank wastes) unless authorized by the director and subject to those conditions as provided in LMC 14.60.379;

I. 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 POTW for maintenance or repair;

J. 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 impart 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 percent from the seasonably established norm for aquatic life;

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

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

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

N. Medical or dental wastes, except as specifically authorized by the director;

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

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

Q. 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 way to the POTW or to the operation of the POTW treatment plant. 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 shall any single reading over 10 percent of the lower explosive limit (LEL) be allowed;

R. Animal entrails, bones, hair, hides or fleshings, 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, glass grindings or polishing wastes in amounts that cause interference in the POTW;

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

T. Any wastewater that can cause harm to the sewers, sewage treatment process, or equipment; have an adverse effect on the receiving stream; or can endanger life, limb, 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);

U. 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 required by the city of Lynnwood and has paid all fees assessed for the privilege of said discharge;

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

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

X. Any slug load;

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

Z. Fats, oils and grease in amounts that may cause obstructions or maintenance problems in the collection/conveyance system, or interfere with the POTW treatment plant operations;

AA. The discharge of any untreated wastewater regulated by National Emission Standards for Hazardous Air Pollutants (NESHAP) is prohibited. The POTW treatment plant does not and will not accept a NESHAP regulated waste stream nor provide treatment or controls as an agent for any industrial user within the meaning of 40 CFR Part 63.