(a) These general prohibitions shall apply to all Dischargers to the POTW regardless of whether the Discharger is or is not subject to Categorical Pretreatment Standards or any other National, State, or Local Pretreatment Standard or Requirement. No person shall discharge or cause to be discharged, any of the following described water or wastes to any public sewer:
(1) Pollutants which singly or in combination with others present may create a fire or explosion hazard in the POTW including, but not limited to, discharges 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) Pollutants which result in the presence of toxic gases, vapors or fumes within the POTW in a quantity that may cause acute worker or public health and safety problems.
(3) Any solids, greases, slurries or viscous material of such character or in such quantity that may cause an obstruction to the flow in the sewer or otherwise interfere with the proper functioning of any portion of the POTW.
(4) Any toxic substances, chemical elements or compounds in quantities sufficient to impair the operation or efficiency of the sewage treatment plant or that will pass-through the sewage treatment plant and cause the effluent thereof to exceed NPDES permit limits, or otherwise interfere with the effective and final disposal of sludge removed or separated by the sewage treatment plant. This includes but is not necessarily limited to the substances and respective limitations referenced in Section 924.04.
(5) Any discharges having a pH lower than 6.0 or higher than 10.0 or having any corrosive property capable of causing damage or hazard to structures, equipment or personnel of the POTW.
(6) Any wastewater having a temperature which will inhibit biological activity at the sewage treatment plant or otherwise result in interference, but in no case, wastewater with a temperature at the introduction into the treatment plant which exceeds forty degrees Centigrade (104 degrees Fahrenheit).
(7) Any slug release, which means any pollutant, including oxygen-demanding pollutants (CBOD, etc.), discharged in an extraordinary discharge episode of such volume, flow-rate and/or pollutant concentration or load which, either singly or by interaction with other pollutants, will cause interference with the sewage treatment plant.
(8) Any discharge containing any radioactive wastes or isotopes of such half-life or concentration which exceeds limits in compliance with applicable Local, State or Federal regulations.
(9) Any substance with objectionable color not removed in the treatment process, such as, but not limited to dye wastes and vegetable tanning solutions.
(10) Any wastewater that causes a hazard to human life or creates a public nuisance.
(11) Any discharge containing petroleum oil, nonbiodegradable cutting oil or products of mineral origin in amounts that can pass-through or cause interference with the POTW operations.
(12) Any discharge containing fats, wax, grease, or oils regardless of origin, and whether emulsified or not, in excess of 100 mg/L or containing substances which may solidify or become viscous at temperatures between 33 degrees and 150 degrees Fahrenheit (1 degree and 65 degrees Centigrade).
(13) Noxious or malodorous substances (solids, liquids or gases) which either singly or by interaction with other wastes, are capable of creating a public nuisance or hazard to life or may be sufficient to prevent entry into a sewer for its maintenance and repair.
(14) Garbage that has not been ground or comminuted to such a degree that all particles will be carried freely in suspension under flow conditions normally prevailing in the public sewers, with no particle greater than one-half (½) inch in any dimension.
(15) Any discharge that may cause the sewage treatment plant’s treatment residues, sludges, or scums to be unsuitable for reclamation and reuse or to interfere with the reclamation processes.
(16) Unless specifically authorized by the City or an applicable Pretreatment Standard or Requirement, any unpolluted water that will increase the hydraulic load on the POTW, including but not limited to storm water, surface water, roof runoff, or uncontaminated, non-contact cooling water.
(17) Any discharge that may cause the POTW to violate its NPDES permit or other applicable permits or fail a toxicity test.
(18) Unless specifically authorized by the City, any trucked or hauled pollutants. Such pollutants shall only be discharged at the times and locations designated by the City. Refer to Section 924.23 of this chapter.
(b) Nothing in this section shall be construed as preventing any special agreement or arrangement between the City and any Discharger to the POTW whereby wastewater of unusual strength or character is discharged into the system. No Agreement shall be made which violates any state or federal standards or requirements including Categorical Pretreatment Standards, or standards or requirements specific to the City’s Ordinance that are more stringent than state or federal regulations.
(Ord. 12966/2020. Passed 10-14-20.)