(a) No person shall discharge or cause to be discharged any waters or waste containing constituents exceeding the concentration limits established by these regulations.
(b) National categorical pretreatment standards as promulgated by the U.S. Environmental Protection Agency (EPA) pursuant to the Act are hereby adopted and shall be met by all dischargers of the regulated industrial categories.
(c) State requirements and limitations on discharges to the POTW shall be met by all dischargers which are subject to such standards in any instance in which they are more stringent than Federal requirements and limitations or those in this or any other applicable section. (Ord. 82-211. Passed 12-13-82.)
(d) The Director shall establish additional or more stringent limitations on wastewater strength and more stringent specific limitations and requirements on individual dischargers where deemed necessary by the Director to comply with the applicable Pretreatment Standards or the objectives set forth in Chapter 921. Such standards and requirements shall be published fifteen days prior to their effective date in the largest newspaper of general circulation within the City. Additionally, the Director shall notify in writing each regulated or potentially regulated industrial discharger of the limitations or requirements. All limitations and requirements established by the Director shall be rulings subject to the provisions of Section 923.23. Local limits of wastewater strength can be found within the industrial user discharge permit provided by the City of Zanesville Wastewater Treatment Plant. The Director may also develop BMP’s and would be considered local limits and pretreatment standards.
(e) When a categorical pretreatment standard is expressed only in terms of pollutant concentrations, a SIU may request the Director to convert the limits to equivalent mass limits. The determination to convert concentration limits to mass limits is within the discretion of the Director. The Director may establish equivalent mass limits only if the SIU meets the conditions set forth in 40 CFR 403.6(C)(5). The Director may convert the mass based limits of the categorical pretreatment standards of 40 CFR Parts 414,419, and 455 to concentration limits, in accordance with 40 CFR 403.6(C)6, for purposes of calculating limitations applicable to the individual SIU. The determination to convert mass based limits to concentration limits is at the discretion of the Director. (Ord. 15-123. Passed 11-23-15.)
(f) An application for modification of the National Categorical Pretreatment Standards may be submitted to the USEPA by the Director, when the City's wastewater treatment system achieves consistent removal of the pollutants as defined by 40 CFR - 403.7. The Director may apply to the USEPA for allowable variances from categorical Pretreatment Standards for fundamentally different factors, pursuant to 40 CFR 403.13. The Director may require any or all dischargers potentially affected by such applications to provide data, records and other pertinent information necessary for the preparation and review of the application, subject to the provisions of Section 923.19. (Ord. 84-159. Passed 11-26-84.)
(g) The Director may issue specific orders to any industrial user or to classes of industrial users or may issue general orders to all industrial users to require compliance with any requirements under this section, including applicable categorical pretreatment standards, other discharge limits and reporting requirements. (See Section 923.14)
(h) Users may be required by the Director to comply with Best Management Practices.
(Ord. 15-123. Passed 11-23-15.)
(i) Dilution. No person shall in any way increase the use of potable or process water, or mix separate waste streams for the purpose of diluting a discharge as a partial or complete substitute for adequate treatment to comply with standards specified in this chapter.
(Ord. 15-123. Passed 11-23-15.)