A. Standards Used: Upon the promulgation of the federal categorical pretreatment standards for a particular industrial subcategory, the federal standard, if more stringent than limitations shown in appendices A and B, attached hereto and by reference made a part hereof, for sources in that subcategory, shall immediately supersede the limitations shown in appendices A and B. The superintendent shall notify all affected users of the applicable reporting requirements under 40 CFR, section 403.12.
B. Modification: Where the Hayden area regional sewage treatment wastewater system achieves consistent removal of pollutants limited by federal pretreatment standards, the county and Hayden area regional sewage treatment board may apply to the approval authority for modification of specific limits in the federal pretreatment standards. 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 ninety five percent (95%) of the samples taken when measured according to the procedures set forth in section 403.7(c)(2) 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 county may then 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 discharges shall apply in any case where they are more stringent than federal requirements and limitations or those in this chapter.
D. County's Right Of Revision: The county reserves the right to establish by ordinance more stringent limitations or requirements on discharges to the wastewater disposal system if deemed necessary to comply with the objectives presented in section 4-4-1 of this chapter.
E. Dilution Prohibited: No user shall ever increase the use of process water or in any way, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in the federal categorical pretreatment standards, or in any other pollutant specific limitation developed by the county or state. (Ord. 153, 5-3-1990)