§ 67.1-2-2. National Categorical Pretreatment Standards.

(a)

This Ordinance incorporates by reference the Categorical Pretreatment Standards set out in 40 C.F.R., Chapter I, Subchapter N, Parts 405-471.

(b)

Upon the promulgation of the National Categorical Pretreatment Standards for an industrial subcategory, the Federal Standard, if more stringent than the limitations imposed by the County and/or by the State for such subcategory, shall immediately supersede the County and/or State limitations.

(c)

Where a Categorical Pretreatment Standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Director may impose equivalent concentration or mass limits in accordance with 40 C.F.R. § 403.6(c).

(d)

When wastewater subject to a Categorical Pretreatment Standard is mixed, prior to the sampling location, with wastewater not regulated by the same standard, the Director shall, as appropriate, impose an alternate limit using the combined wastestream formula in 40 C.F.R. § 403.6(e). Standards apply at the end of the regulated process unless the standard indicates otherwise.

(e)

An Industrial User may obtain a variance from a Categorical Pretreatment Standard if it can prove, pursuant to the procedural and substantive provisions of 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.

(f)

An Industrial User may obtain a net/gross adjustment to a Categorical Pretreatment Standard in accordance with 40 C.F.R. § 403.15. (44-09-67.1.)