A. 1. General Discharge Prohibitions: No user shall contribute or cause to be contributed, 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 requirements.
2. Surface water and all other drainage shall be discharged to such sewers as are specifically designated as storm sewers, or to surface water system components whether private or public in accordance with Title 8, of this code.
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, waste streams with a closed- cup flashpoint of less than one hundred forty degrees Fahrenheit (140 F) (60 Celsius) using the test methods specified in 40 CFR 261.21.
2. Wastewater having a pH less than six (6.0) or more than ten (10.0), 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 industrial discharge solids greater than 1/2 inch in any dimension);
4. Pollutants, including oxygen-demanding pollutants (BOD, 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 (104F ) (40 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 at discharge points designated in writing by the City of Rathdrum;
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 containing any radioactive wastes or isotopes except as specifically approved by the Public Works Director in compliance with applicable Local, State or Federal regulations.
11. Industrial user sources of storm water, 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 Public Works Director.
12. Any sludges, screenings or other residues from the pretreatment of industrial wastes or from industrial processes.
13. Medical wastes that may cause or contribute to pass-through, interference, or violate any pretreatment standard or requirement.
14. Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a Whole Effluent Toxicity (WET) test required by the City of Post Fall's NPDES permit.
15. Detergents, surface-active agents or other substances which may cause excessive foaming, inhibition or pass-through in the POTW.
16. Any liquid, solid 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 (2) 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 (5%) nor any single reading over ten percent (10%) of the lower explosive limit (LEL) of the meter.
17. Grease, 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.
18. Any substance which will cause the POTW to violate its NPDES and/or other disposal system permits.
19. The contents of any tank or other vessel owned or used by any person in the business of collecting or pumping sewage, effluent, septic tank and chemical toilet waste, or other wastewater unless said person has first obtained written authorization from the Director and complied with the testing and other requirements specified by the Director.
20. Pesticides in concentrations exceeding the water quality standards of the State of Idaho, IDAPA 58.01.02.
21. Sewage sludge, except in accordance with the Post Fall's NPDES permit, providing that it specifically allows the discharge to surface waters of sewage sludge pollutants.
22. A slug load as defined in Section 8-4-1-3 of this Chapter.
23. Any pollutant directly into a manhole or other opening in the POTW unless specifically authorized by the Director or otherwise permitted under this Chapter.
24. Water containing PCBs in excess of 3 µg/L.
C. Pollutants, substances, or wastewater prohibited by this Section shall not be processed or stored in such a manner that they could be discharged to the POTW. (Ord. 353, 6-21-1994; amd. Ord. 582, 10-9-2019)