No user shall introduce or cause to be introduced into the city’s sanitary sewer system any of the following pollutants, substances, or wastewater:
1. Pollutants which create a fire or explosive hazard in the city’s sanitary sewer system with a closed cup flashpoint of less than 140° degrees Fahrenheit (60 degrees centigrade) using the test methods specified in 40 CFR Part 261.21. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, or sulfides. Closed cup flashpoint values may be found in the National Institute of Occupational Safety and Health (NIOSH) Pocket Guide to Chemical Hazards;
2. Wastewater having a pH lower than 5.0 or more than 11.5, or otherwise capable of causing damage or hazard to the city’s sanitary sewer system;
3. Solids or viscous substances, including, but not limited to, fats, oils, or grease, garbage with particles greater than one-half inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, wastepaper, wood, plastics, gas, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes, which may cause obstruction of flow in the sewer or other inference with the operation of the city’s sanitary sewer system;
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 to the city’s sanitary sewer system;
5. Wastewater having a temperature greater than 140 degrees Fahrenheit (60 degrees centigrade), or which will inhibit biological activity in the water pollution control plant resulting in interference, but, in no case, wastewater which causes the temperature, at the introduction into the water pollution control plant which to exceeds 140 degrees Fahrenheit (60 degrees centigrade);
6. Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin that will cause interference or pass through;
7. Pollutants which result in the presence of toxic gases, vapors or fumes within the city’s sanitary sewer system in a quantity that may cause acute worker health and safety issues;
8. Trucked or hauled wastes, except at discharge points designated by the director;
9. Noxious or malodorous liquids, gases, or solids, 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 city’s sanitary sewer system for maintenance and repair;
10. Wastewater that may cause a detrimental environmental impact or nuisance in the waters of the state or United States that is unacceptable to any public agency having regulatory jurisdiction over the city;
11. Wastewater which imparts color which cannot removed in the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions;
12. Wastewater causing two readings on an explosion hazard meter at the point of discharge into the city’s sanitary sewer system (or at any point in the city’s sanitary sewer system) of more than five (5) percent nor any single reading over ten (10) percent of the lower explosive limit (LEL) of the meter. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, sulfides, and any other substances in any quantity or concentration that the city, state, or USEPA has notified the user are a fire hazard or a hazard to the city’s sanitary sewer system;
13. Wastewater containing algaecides, fungicides, antibiotics, insecticides, strong oxidizing agents or strong reducing agents in such quantity or strength as to cause or contribute to violations of the city’s NPDES permit discharge restrictions, interference with or upset of the city’s sanitary sewer system, or personnel safety hazards;
14. Medical waste, except as specifically authorized by the director, in a wastewater discharge permit;
15. Wastewater requiring an excessive quantity of chlorine or other chemical compound used for disinfection purposes;
16. Wastewater containing radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the director in compliance with any applicable state or federal regulations;
17. Wastewater that causes a hazard to human life or creates a public nuisance;
18. Wastewater containing toxic pollutants, gases, vapors, or fumes in sufficient quantity, which either singly or by interaction with other pollutants, may injure or interfere with any wastewater treatment process, cause acute worker health and safety problems, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the city’s sanitary sewer system, result in exceedances of biosolids disposal restrictions, or exceed the limitation set forth in a pretreatment standard or requirement. A toxic pollutant shall include, but not be limited to, any pollutant identified pursuant to section 307(a) of the Act;
19. Stormwater, rainwater, groundwater, street drainage, subsurface drainage, yard drainage, and cooling water, including evaporative type air cooler discharge water and noncontact cooling water;
20. Wastewater containing sulfides in sufficient quantity or strength as to cause or contribute to corrosion in the city’s sanitary sewer system or violations of the city’s NPDES permit; or
21. Discharges which, if otherwise disposed of, would be a hazardous waste under 40 CFR Part 261.
Pollutants, substances, or wastewater prohibited by section 15.40.021 of this chapter shall not be processed or stored in such a manner that they could be discharged into the city’s sanitary sewer system.
(Ord. 2481 §1 (part))