(A) Pursuant to 40 C.F.R. § 403.6(c), when the limits in a National Categorical Pretreatment Standard are expressed only in terms of mass of pollutant per unit of production, the District may elect to convert the limits to equivalent limitations expressed either as mass of pollutant discharged per day or effluent concentration for purposes of calculating effluent limitations applicable to individual IUs.
(B) IUs for which the District has calculated equivalent limitations shall be required to comply with said equivalent limitations in lieu of the promulgated National Categorical Pretreatment Standards from which the equivalent limitations were derived.
(Ord. 18-0017, passed 11-13-2018)