The categorical pretreatment standards found at 40 C.F.R. Ordinance I, Subordinance N, Parts 405-471, and any amendments, are hereby incorporated by reference.
(A) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Board of Public Works, through the Superintendent or person designated to manage the pretreatment program for the POTW, 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 Board of Public Works, through the Superintendent or designated pretreatment staff, 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 the Board for a categorical pretreatment standard if the user can prove to the Board, 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 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. 1476, passed 6-18-07; Am. Ord. 1639, passed 12-19-16)