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Messer, LLC. Industrial Wastewater Discharge Permit page 9 of 41 <br />3. Discharge Screening Level Limitations have been established to evaluate the need for a <br />limitation for pollutants that are not listed in the Effluent Limitation section of the permit. <br />If a permittee has no limit for a particular pollutant, but observes, through monitoring <br />and analysis, a concentration of that pollutant greater than the listed Discharge Screening <br />Level concentration found in the table below, the permittee shall notify the Control <br />Authority. This notification shall be made in writing within five days of observing the <br />pollutant concentration. <br /> <br />Parameter Daily Maximum Screening Level (mg/L) <br />Arsenic (mg/L) 0.2 <br />Cadmium (mg/L) 0.1 <br />Chromium (mg/L) 2.0 <br />Copper (mg/L) 0.3 <br />Lead (mg/L) 0.3 <br />Nickel (mg/L) 0.3 <br />Silver (mg/L) 0.2 <br />Zinc (mg/L) 0.3 <br /> <br /> <br />