The categorical pretreatment standards now found or hereafter found at 40 C.F.R. Chapter I, Subchapter N, are hereby incorporated in this subchapter by reference as though set forth in full and shall apply to significant industrial users, including categorical industrial users.
(A) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the authority 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 authority shall impose an alternate limit using the combined waste stream formula in 40 C.F.R. § 403.6(e).
(C) A user may obtain a variance from a categorical pretreatment standard if the user can prove, pursuant to the procedural and substantive provisions of 40 C.F.R. § 403.13, that factors relating to its discharge are fundamentally different from the factors considered by the EPA when developing the categorical pretreatment standard.
(D) A user may obtain a net gross adjustment to a categorical standard in accordance with 40 C.F.R. § 403.15.
(Ord. 199, passed 10-13-2010)