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Maximum eenrzeRtF toren of heatsy^ta4 Under this article, the maximum <br />allowable concentrations of heavy metals, stated in terms of milligrams per liter <br />(mg/1), are as follows: <br />(1) ARSENIC <br />1.108 mg/I <br />(2) CADMIUM 0.284 mg/I <br />(3) CHROMIUM <br />1.377 mg/1 <br />(4) COPPER <br />0.43 mg/I <br />n <br />(5) CYANIDE <br />(6) LEAD <br />75 Mg/l <br />0.141 mg/I <br />(7) MERCURY <br />0.005 mg/I 0.0906 Fng�l <br />(8) NICKEL <br />0.075 mg/I <br />Selenium <br />2.1 mg/I <br />(9) SILVER <br />0.66 mg/I <br />(10) ZINC <br />2.295 mg/I <br />C. The above limits apply at the point where the wastewater is discharge to the <br />POTW. All concentrations for metallic substances are for total metals unless <br />indicated otherwise. The Director may impose mass limitations in addition to <br />the concentration -based limitation above. <br />. ... ..97m2mrM2. . •.. <br />74-50t2-.54 ity's Right of Revision <br />The City reserves the right to establish, by ordinance or in wastewater discharge <br />permits, more stringent standards or requirements on discharges to the POTW if <br />deemed necessary to comply with the objectives presented in 74-36 Brim 1.i <br />of this ordinance or the general and specific prohibitions in 74-46 Section 24 of <br />this ordinance. <br />16 <br />