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10 <br /> <br />SECTION 2 - GENERAL REQUIREMENTS <br /> <br />2.1 Prohibited Discharge Standards <br /> <br />A. General Prohibitions: No user shall introduce or cause to be introduced into the <br />POTW any pollutant or wastewater which causes pass through or interference. <br />These general prohibitions apply to all users of the POTW whether or not they are <br />subject to categorical pretreatment standards or any other National, State, or local <br />pretreatment standards or requirements. <br /> <br />B. Specific Prohibitions: No user shall introduce or cause to be introduced into the <br />POTW the following pollutants, substances, or wastewater: <br /> <br />(1) Pollutants which create a fire or explosive hazard in the POTW, including, <br />but not limited to, wastestreams with a closed-cup flashpoint of less than <br />140°F (60°C) using the test methods specified in 40 CFR 261.21; <br />(2) Wastewater having a pH less than 5.0 s.u. or more than 11.0 s.u. (unless in <br />compliance with Section 2.5 of this Ordinance) or otherwise causing <br />corrosive structural damage to the POTW or equipment; <br />(3) Solid or viscous substances in amounts which will cause obstruction of the <br />flow in the POTW resulting in interference but in no case solids greater than <br />one quarter inch (1/4"); <br />(4) Pollutants, including oxygen-demanding pollutants (BOD, COD, etc.), <br />released in a discharge at a flow rate and/or pollutant concentration which, <br />either singly or by interaction with other pollutants, will cause interference <br />with the POTW; <br />(5) Wastewater having a temperature which will inhibit biological activity in <br />the treatment plant resulting in interference, but in no case wastewater <br />which causes the temperature at the introduction into the treatment plant to <br />exceed 104°F (40°C) unless the Approval Authority, upon the request of the <br />POTW, approves alternate temperature limits; <br />(6) Petroleum oil, non-biodegradable cutting oil, or products of mineral oil <br />origin, in amounts that will cause interference or pass through; <br />(7) Pollutants which result in the presence of toxic gases, vapors, or fumes <br />within the POTW in a quantity that may cause acute worker health and <br />safety problems; <br />(8) Trucked or hauled pollutants (except Domestic Sewage or Septic Tank <br />Wastes) unless authorized by the director, and at discharge points <br />designated by the City.