The categorical pretreatment standards found at 40 C.F.R. Chapter I, Subchapter N, Parts 405 through 471 are hereby incorporated.
(A) 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 C.F.R. § 403.6(c).
(B) 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 using the combined wastestream formula in 40 C.F.R. § 403.6(e).
(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.
(D) A user may obtain a variance from a categorical pretreatment standard if the user can prove, pursuant to the procedural and substantive provisions in 40 C.F.R. Part 403.13, that factors relating to its discharge are fundamentally different from the factors considered by EPA when developing the categorical pretreatment standard.
(E) A user may obtain a net gross adjustment to a categorical standard in accordance with 40 C.F.R. § 403.15.
(Ord. 2016-15, passed 8-10-2016)