(A)   Generally.  Users subject to categorical pretreatment standards are required to comply with applicable standards as set out in 40 C.F.R. Chapter 1, Subchapter N, Parts 405-471 and incorporated herein.
   (B)   Specifically.
      (1)   Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the POTW Director may impose equivalent concentration or mass limits in accordance with 40 C.F.R. § 403.6(C).
      (2)   When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the POTW Director shall impose an alternate limit using the combined wastestream formula in 40 C.F.R. § 403.6(e).
      (3)   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.
      (4)   A user may obtain a net gross adjustment to a categorical standard in accordance with 40 C.F.R. § 403.15.
(Ord. passed 8-22-1994)  Penalty, see § 51.999