(a) Industrial users shall provide necessary wastewater treatment as required to comply with this chapter and shall achieve compliance with all national categorical pretreatment standards within the time limitations as specified by the federal pretreatment regulations and as required by the city. Industrial users with integrated facilities shall comply with any alternative discharge limits as set by the city. Any facilities required to pretreat wastewater to a level acceptable to the city shall be provided, operated, and maintained solely at the user's expense. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the city for review at the request of the city. The review of those plans and operating procedures will in no way relieve the user from the responsibility of modifying the facility as necessary to produce an effluent acceptable to the city under the provisions of this chapter. Any subsequent changes in the pretreatment facilities or method of operation shall be reported to the city prior to the user's initiation of the changes.
(b) 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 Rule 62-625.410(4), F.A.C.
(2) When wastewater subject to a categorical pretreatment standard is mixed 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 Rule 62-625.410(6), F.A.C.
(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 Rule 62-625.700, F.A.C., 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 discharges per day or effluent concentration for purposes of calculating effluent limitations applicable to Individual Industrial Users, in accordance with 62-625.401(4), F.A.C.
(5) A user may obtain a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15 and Rule 62-625.820, F.A.C.
(c) 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. 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.
(d) All records relating to compliance with pretreatment standards shall be available to officials of the city, the WWF, EPA, or FDEP upon request.
