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COLORADO LEGACY LAND <br /> SCHWARTZWALDER MINE <br /> TABLE E-S. COLORADO DISCHARGE PERMIT #CO.0001244 WATER TREATMENT PLANT DISCHARGE SAMPLING REQUIREMENTS <br /> Effluent Limitations Maximum Concentrations Monitoring Requirements <br /> 30-Day 7-Day Daily Maximum 2-Year Frequency Sample Type <br /> Effluent Parameter Units Average Average Average <br /> Antimony, Total µg/L S.6 - - - 2 Days / Month Composite <br /> Arsenic, Total Recoverable pg/L Report - - - 2 Days / Month Composite <br /> Boron, Total Recoverable mg/L 0.7S - - - 2 Days / Month Composite <br /> Cadmium, Potentially Dissolved µg/L Report - Report - 2 Days / Month Composite <br /> Chemical Oxygen Demand mg/L 100 200 - 1 Day / Week Composite <br /> Chromium (Cr[III]), Total µg/L - - 5o 0.75 2 Days / Month Composite <br /> Hexavalent Chromium (Cr[IV]), Dissolved µg/L Report - Report - 2 Days / Month Composite <br /> Copper, Potentially Dissolved µg/L 12 - 18 1.8 2 Days / Month Composite <br /> Cyanide, WAD µg/L - - 5 0.85 2 Days / Month Composite <br /> Chloride mg/L 250 - - 54 2 Days / Month Composite <br /> Effluent Flow M G D 0.288 - Report - Continuous Recorder <br /> Fluoride mg/L - - 2 - 2 Days / Month Composite <br /> Iron, Dissolved µg/L 300 - - 45 2 Days / Month Composite <br /> Iron, Total Recoverable µg/L Report - - Report 2 Days / Month Composite <br /> Manganese, Dissolved µg/L 50 - - 7.5 2 Days / Month Composite <br /> Mercury, Total µg/L Report - - - 2 Days / Month Composite <br /> Nickel, Potentially Dissolved µg/L Report - Report Report 2 Days / Month Composite <br /> Oil and Grease mg/L - - 10 - 5 Days / Week Visual/ Grab <br /> PH - - - 6.5-9 - 5 Days / Week Grab <br /> Selenium, Potentially Dissolved pg/L Report - Report Report 2 Days / Month Composite <br /> Silver, Potentially Dissolved µg/L 0.13 - 3.5 0.02 2 Days / Month Composite <br /> Sulfate mg/L 250 - 131 2 Days / Month Composite <br /> Sulfide mg/L Report - - Report 2 Days / Month Composite <br /> Total Radium 226+228 pCi/L 5 - - - 2 Days / Month Composite <br /> Radium 226, Dissolved pCi/L 3 - 10 - 2 Days / Month Composite <br /> Radium-226, Total pCi/L 10 - 30 - 2 Days / Month Composite <br /> Total Dissolved Solids mg/L I Report - Report - Quarterly Composite <br /> JANUARY 2 0 2 1 3 7 A M E N D M E N T 5 <br />