(a) Dilution. No user shall increase the use of process water or dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with any pretreatment standard or requirement. This shall not prohibit the use of equalization tanks utilized to regulate flows.
(b) Pass Through and Interference. No User shall discharge or cause to be discharged, directly or indirectly, any pollutants which by their nature or concentration will pass through or cause interference with the operation of performance of the POTW.
(c) Specific Prohibitions. In addition, the following pollutants shall not be introduced into the POTW:
(1) Pollutants which create a fire or explosion hazard in the POTW including, but not limited to, wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade using the test method specified in 40 CFR 261.21.
(2) Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, or to exceed the limitations set forth in this chapter. A toxic pollutant shall include but not be limited to any pollutant identified in the priority pollutant list set forth in Appendix A of this chapter.
(3) Any substance which may cause the POTW's effluent or treatment residues, sludges or scums to be unsuitable for reclamation or reuse or to interfere with the reclamation process. In no case shall a substance discharged to the POTW cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act, Resource Conservation and Recovery Act or State standards applicable to the sludge management method being used.
(4) Pollutants which will cause corrosive or structural damage to the POTW, but in no case discharges with a pH lower than 5.0 or higher than 9.5 Standard Units.
(5) Solid or viscous substances in amounts which will cause obstruction to the flow in the POTW or otherwise interfere with proper operation. Prohibited substances include, but are not limited to, grease, uncomminuted garbage, manure, hair, feathers, sand, spent lime, grass clippings, and similar substances.
(6) Any slug load discharge.
(7) Heated wastewater which will cause the temperature at the introduction into the POTW to exceed 40 C (104 F) or inhibit biological activity in the wastewater treatment processes.
(8) Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through the POTW and not to exceed 100 mg/L at any time.
(9) Any liquids, solids, or gases which either singly or by interaction result in toxic or malodorous gases, vapors or fumes which cause a public nuisance, health and safety problems, or danger to POTW workers.
(10) Any substance with color not removed in the treatment processes such as, but not limited to, dyes and tanning solutions.
(11) Any unpolluted waters which will increase the hydraulic loading on the plant including, but not limited to, any storm water, surface water, groundwater, roof run-off water, subsurface drainage, uncontaminated cooling water or uncontaminated industrial process waters. This applies strictly to all new connections. All existing connections may be approved or rejected after review of hardship and/or other considerations by the Water/Wastewater Superintendent.
(12) Any wastewater containing any radioactive wastes or isotopes.
(13) Any trucked or hauled pollutants, including septage and industrial waste, except at locations and times designated by the Water/Wastewater Superintendent.
(14) 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.
(d) When the Water/Wastewater Superintendent determines that a discharger is contributing any substances in such amounts as to interfere with the operation of the POTW, the Water/Wastewater Superintendent shall:
(1) Advise the discharger of the impact of the contribution on the POTW; and
(2) Develop effluent limits for the discharger to correct the interference with the POTW.
(Ord. 4516-20. Passed 1-21-20.)