(a) National Categorical Pretreatment Standards, as promulgated and amended by the U.S. Environmental Protection Agency pursuant to the Act, shall be met by all dischargers of the regulated industrial categories. An application for modification of the National Categorical Pretreatment Standards may be considered for submittal to the Regional Administrator by the Authority, when the Authority's wastewater treatment system achieves consistent removal of the pollutants as defined by 40 CFR 403.7. If a pollutant in an industrial discharge is limited by both National Categorical Pretreatment Standards and limits established by the Authority, the maximum allowable concentration will be the more stringent of the two.
(b) State requirements and limitations on discharges to the POTW shall be met by all discharges 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 ordinance.
(c) The Authority reserves the right to amend any ordinance and administrative order to provide for more stringent limitations or requirements on discharges to the Authority's treatment system where deemed necessary to comply with the objectives of an ordinance.
(Ord. 21-94. Passed 6-28-94.)
(d) No discharger shall increase the use of potable or process water in any way, nor mix separate waste streams, for the purpose of diluting a discharge, or attempt to dilute a discharge, as a partial or complete substitute for adequate treatment, to achieve compliance with the standards set forth in this chapter or any ordinance or administrative order.
(Ord. 16-21. Passed 4-27-21.)
(e) No discharger shall discharge wastewater which exceeds the limits for the materials listed below based on a twenty-four hour composite sample or as may be established by the Authority from time to time for such materials to meet NPDES permit conditions:
Effluent characteristics Discharge limitation (mg/l) CBOD 541 TSS 250 Cadmium 0.01 Chromium 0.36 Copper 0.27 Cyanide 0.17 (grab sample) Lead 0.11 Mercury 0.007 Nickel 0.25 Zinc 0.36 |
(f) The preceding list of substances is subject to revision as required to meet current water quality standards or effluent standards imposed by State or Federal agencies. In special cases (low volume users), the concentration of the applicable substances in the wastewater may be exceeded if it is determined by the Authority that the total weight of the substances discharged to the sewage system is not harmful to, or will not interfere with, the sewage treatment process or will not violate water quality or effluent standards.
(g) No discharger shall discharge any waters or wastes containing phenols or other taste or odor-producing substances, in concentrations exceeding limits which may be established by the Authority as necessary, after treatment of the composite sewage, to meet the requirements of Federal, State or other public agencies of jurisdiction for such discharge to the receiving waters, and which might cause the POTW to violate its NPDES permit and/or other disposal system permits.
(Ord. 21-94. Passed 6-28-94.)
(Ord. 21-94. Passed 6-28-94.)