§ 18-158 FEDERAL CATEGORICAL PRETREATMENT STANDARDS.
   (A)   (1)   Upon the promulgation of the federal categorical pretreatment standards for a particular industrial subcategory, the federal standard, if more stringent that limitations imposed under this chapter for sources in that subcategory shall immediately supersede the limitations imposed under this chapter.
      (2)   The Administrator shall notify all affected users of the applicable reporting requirements under 40 C.F.R. § 403.12.
   (B)   (1)   If the city’s wastewater treatment system achieves consistent removal of pollutants limited by federal pretreatment standards, the city may apply to DHE for modification of specific limits in the federal pretreatment standards.
      (2)   CONSISTENT REMOVAL shall mean reduction in the amount of a pollutant or alteration of the nature of the pollutant by the wastewater treatment system to a less toxic or harmless state in the effluent which is achieved by the system in 95% of the samples taken when measured according to the procedures set forth in 40 C.F.R. § 403.7(c)(2), General Pretreatment Regulations for Existing and New Sources of Pollution, promulgated pursuant to the Act.
(2011 Code, § 18-158)