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SNOWCAP COAL COMPANY <br />TABLE 18-1 <br />EFFLUENT LIMITATIONS FOR SURFACE DISCHARGE <br />Effluent Limitations for Outfalls 002 & 016 <br />Effluent Parameter <br />Effluent Limits <br />30 -Day Average <br />Effluent Limits <br />7 -Day Average <br />Effluent Limits <br />Daily Maximum <br />Monitoring <br />Requirements <br />Effluent Flow MGD <br />0.5 <br />Report <br />Continuous <br />pH (su) <br />6.5-9 <br />Monthly <br />TSS (mg/1) <br />35 <br />70 <br />Monthly <br />Oil/Grease (visual) <br />Report <br />Quarterly <br />Oil/Grease (mg/1) <br />10 <br />Contingent <br />TDS (mg/1) <br />Report <br />Report <br />Quarterly <br />As, TR (ug/1) <br />18 <br />2Days/Month <br />Cd, PD (ug/1) <br />0.92 <br />2Days/Month <br />Cu, PD (ug/1) <br />22 <br />35 <br />2Days/Month <br />CN, WAD (ug/1) <br />Report <br />2Days/Month <br />Fe, TR (ug/1) <br />3500 <br />7000 <br />Quarterly <br />Pb, PD (ug/1) <br />7.6 <br />2Days/Month <br />Se, PD (ug/1) <br />4.6 <br />18.4 <br />2Days/Month <br />Ag, PD (ug/1) <br />Report <br />2Days/Month <br />Sulfide as 1-12S (mg/1) <br />Report <br />2Days/Month <br />Effluent Limitations for Outfalls 005, 007, 008, 011, 012, 013 & 014 <br />A Sediment Control Plan approved by the Colorado Division of Reclamation, Mining and Safety will be <br />required to satisfy ELG requirement of Sediment Control Plan. Notification of such approval has been <br />submitted to the Division (CDPHE). No other monitoring or limitations are applied to these outfalls. <br />T18-1-1 <br />TR -67 (Rev 11/15) <br />