Industrial users per 40 CFR 403.8(f)(1)(ii) must comply with the categorical pretreatment standards found at 40 CFR Chapter I, Subchapter N, Parts 405-471.
(A) When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the Wastewater Superintendent shall impose an alternate limit in accordance with 40 CFR 403.6(e).
(B) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Wastewater Superintendent may impose equivalent concentration or mass limits in accordance with 40 CFR 404.6(c).
(C) When the limits in a categorical pretreatment standard are expressed only in terms of mass of pollutant per unit of production, the Wastewater Superintendent may 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 industrial users.
(Ord. 15-2021, passed 11-23-21)