(a) Upon the promulgation of the Federal Categorical Pretreatment Standard for control of toxic pollutants as designated in Section 307(a) of the Federal Act for a particular industrial subcategory, the Federal standard, if more stringent than limitations imposed under this chapter for sources in that subcategory, shall immediately supersede the limitations imposed under this chapter. The Director shall notify all affected users of the applicable reporting requirements under 40 CFR, Section 403.12.
(b) Modification of Federal Categorical Pretreatment Standards. Where the City's wastewater treatment works achieves consistent removal of pollutants limited by Federal pretreatment standards, the City may apply to the State approval authority for modification of specific limits in the Federal pretreatment standards. "Consistent removal" means reduction in the amount of a pollutant or alteration of the nature of the pollutant by the wastewater treatment works to a less toxic or harmless state in the effluent which is achieved by the system in ninety-five percent (95%) of the samples taken when measured according to the procedures set forth in Section 403.7(c)(2) and amendments thereto of (Title 40 of the Code of Federal Regulations, Part 403) "General Pretreatment Regulations for Existing and New Sources of Pollution" promulgated pursuant to the Act. The City may modify pollutant discharge limits in the Federal pretreatment standards if the requirements contained in 40 CFR, Part 403, Section 403.7 are fulfilled and prior approval from the approval authority is obtained.
(c) State Requirements. State requirements and limitations on discharge shall apply in any case where they are more stringent than Federal requirements and limitations or those in this chapter.
(Ord. 87-8399. Passed 2-18-87.)