(A) Deadline for compliance with categorical standards by existing sources with categorical pretreatment standards shall be within three years of the date the standard is effective unless a shorter compliance time is specified in the appropriate subpart of 40 C.F.R. Chapter I, Subchapter N, Parts 405-471. Direct dischargers with NPDES permits modified or reissued to provide a variance pursuant to § 301(i)(2) of the Act, being 33 U.S.C. § 1311, shall be required to meet compliance dates set in any applicable categorical pretreatment standard. Existing sources which become industrial users subsequent to promulgation of an applicable categorical pretreatment standard shall be considered existing industrial users except where such sources meet the definition of a new source as defined in 40 C.F.R. § 403.3(k). New sources shall install and have in operating condition and shall “start-up” all pollution control equipment required to meet applicable pretreatment standards before beginning to discharge. Within the shortest feasible time (not to exceed 90 days), new sources must meet all applicable pretreatment standards.
(B) Upon the promulgation of the national categorical pretreatment standards for a particular industrial subcategory, the national standard, if more stringent than limitations imposed under this chapter for sources in the subcategory, shall immediately supersede the limitations imposed under this chapter. The Supervisor shall notify all affected users of the applicable pretreatment standards.
(C) When wastewater subject to a national categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the Supervisor shall impose an alternate limit using the combined wastestream formula in 40 C.F.R. § 403.6(e).
(Ord. 677, passed 8-28-2023) Penalty, see § 54.99