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on -site sewer lines and public sewer lines shall be used only to convey raw sewage. <br />Rainfall runoff sources (including but not limited to roof drains, site drains, inlets, <br />uncovered wash area drains, etc.) are prohibited from connecting to any public or <br />private sanitary sewer pipeline. <br />Sec. 39-58. - Introduction of pollutants prohibited. <br />No person shall introduce or cause to be introduced any of the following into the <br />city's sewer system; <br />(a) Pollutants that create a fire or explosion hazard in the sewer collection <br />system or the publicly owned treatment works (POTW), including but not limited to <br />waste streams with a closed cup flashpoint of less than 140' Fahrenheit or 601, <br />Centigrade using the test methods specified in 40 CFR (Code of Federal Regulations) <br />section 261.21. <br />(b) Pollutants that will cause corrosive structural damage to the sewer <br />collection pipes and structures, but in no case discharges with pH lower than 5.0, unless <br />the sewer system is specifically designed to accommodate such discharges. <br />(c) Solid or viscous substances in amounts which will cause obstruction to the <br />flow in the sewer collection system or the POTW, resulting in interference. <br />(d) Any pollutant, including oxygen demanding pollutants, exerting biological <br />oxygen demand, released in a discharge at a flow rate and/or pollutant concentration <br />which will cause interference with the POTW. <br />(e) Heat in amounts, which will inhibit biological activity in the POTW resulting <br />in interference, but in no case heat in such quantities that the temperature at the POTW <br />treatment plant exceeds 40" Centigrade (104" Fahrenheit) unless the approval <br />authority, upon request of the POTW, approves alternate temperature limits. <br />(f) Petroleum oil, non -biodegradable cutting oil, or products of mineral oil in <br />amounts that will cause interference or pass through. <br />(g) Pollutants which result in the presence of toxic gases, vapors, or fumes <br />within the sewer collection system or the POTW in a quantity that may cause acute <br />worker health and safety problems. <br />(h) Any trucked or hauled pollutants. <br />(i) Large volume discharges in a short period of time (slug flows) that <br />adversely affect the operational capacity of the sewer. <br />Sec. 39-59. - Private sewer overflows prohibited. <br />Ordinance No. NS-2921 <br />Page 51 of 57 <br />