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? <br />(c) State Requirements. State requirements and limitations on discharges to the <br />sewage disposal system shall be met by all dischargers which are subject to such <br />standards in any instance in which they are more stringent than Federal requirements and <br />limitations or those in this or any other applicable ordinance. <br />(d) Right of Revision The City reserves the right to amend the Codified <br />Ordinances to provide for more stringent limitation or requirements on discharges to the <br />sewage disposal system where deemed necessary to comply with the objectives set forth <br />in this chapter. <br />(e) Dilution: No discharger shall increase the use of potable or process water in <br />any way for the purpose of diluting a discharge as a partial or complete substitute for <br />adequate treatment to achieve compliance with the standards set forth in the Codified <br />Ordinances, contained in the Federal pretreatment standards or contained in any State <br />requirements. This Shall not prohibit the use of equalization tanks utilized to regulate <br />flows. <br />(f) Supplementary Limitations. No discharger shall discharge wastewater <br />containing concentrations of the following enumerated materials, exceeding the following <br />values: <br />Material m L <br />Arsenic 0.2 <br />Cadmium 2.0 <br />Chromium, Total 2.0 <br />Copper 1.0 <br />Cyanide, Total 2.0 <br />Iron 15.0 <br />Lead 0.5 <br />Mercury 0.01 <br />Nickel 3.0 <br />Phenols 10.0 <br />Selenium 0.2 <br />Silver 2.0 <br />Toxic Organics, Any One Solvent 0.4 <br />Toxic Organics, Total 2.5 <br />Zinc 2.0 <br />The Service Director may impose mass limitations on dischargers when deemed <br />appropriate by the City. The Director may also convert Categorical Pretreatment <br />Standards expressed in terms of mass to equivalent concentration limits when deemed <br />appropriate.