The categorical pretreatment standards found at 40 C.F.R. Chapter I, Subchapter N, Parts 405-471 are hereby incorporated.
(A) Upon the promulgation of a categorical pretreatment standard for a particular industrial category or subcategory, the categorical pretreatment standard, if more stringent than specific local limits imposed under this chapter for industrial users subject to that categorical standard, shall supersede the local limits imposed under this chapter.
(B) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the environmental officer may impose equivalent concentration or mass limits in accordance with 40 C.F.R. § 403.6(c).
(C) Where industrial users combine wastestreams prior to treatment, compliance with an applicable categorical pretreatment standard will be determined either prior to combining the wastestreams or following treatment of the combined wastestream (by applying the combined wastestream formula found in 40 C.F.R. § 403.6(e)).
(D) A user may obtain a variance from a categorical pretreatment standard if the industrial user can prove, pursuant to the procedural and substantive provisions in 40 C.F.R. § 403.13, that factors relating to its discharge are fundamentally different from the factors considered by EPA when developing the categorical pretreatment standard.
(E) An industrial user may obtain a net gross adjustment to a categorical pretreatment standard in accordance with 40 C.F.R. § 403.15.
(Ord. 160726-A, passed 7-26-2016)