Users must comply with the applicable categorical Pretreatment Standards found in 40 C.F.R. Chapter I, Subchapter N, Parts 405—471.
(A) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the City Manager 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 City Manager 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 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.
(D) A user may obtain a net gross adjustment to a categorical standard in accordance with 40 C.F.R. 403.15.
(Prior Code, Art. 16B, § 2.2)