§ 53.052. NATIONAL CATEGORICAL PRETREATMENT STANDARDS.

(A)

[ Federal Standards Incorporated. ] The categorical pretreatment standards found at 40 CFR Chapter 1, Subchapter N, Parts 405—471 are hereby incorporated.

(1)

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 CFR 403.6 (C) and Florida Administrative Code 62-625-410(4).

(2)

When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the Director shall impose an alternate limit using the combined waste stream formula in 40 CFR 403.6 (E) and Florida Administrative Code 62-625-410(6).

(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 CFR 403.13 and Florida Administrative Code 62.625.700, that factors relating to its discharge are fundamentally different from the factors considered by EPA when developing the categorical pretreatment standard.

(4)

When the limits in a categorical pretreatment standard are expressed only in terms of mass of pollutant per unit of production, the Director may convert the limits to equivalent limitations expressed either as mass of pollutant discharged per day or effluent concentration for purposes of calculating effluent limitations applicable to Individual Industrial Users, in accordance with Florida Administrative Code 62-625.410(4).

(B)

Dilution. No user shall ever increase the use of process water, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with a discharge limitation unless expressly authorized by an applicable pretreatment standard or requirement.

(C)

[ Mass Limitations. ] The Director may impose mass limitations on users who are using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.

(Ord. No. 22-94, passed 5/3/94; Am. Ord. No. 84-94, passed 10/18/94; Ord. No. 4-02, § 11, passed 2/19/02; Ord. No. 25-12, § 3, passed 8/21/12)