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MINREC, INC. AHR PAGE 3 <br />The following table presents arithmetic averages of flow and quality measurements taken <br />at Outfall 001. Outfall 001 is the discharge point for the passive water treatment system. <br />OUTFALL 001 - QUALITY <br />YEAR Flow Max Flow Ave H COND TDS IRON <br />2000 49.2 36.8 8.1 1924 1329 0.09 <br />2001 30.0 25.5 8.1 1884 1376 0.09 <br />2002 25.0 22.4 7.9 1907 1388 0.07 <br />2003 22.0 17.2 8.2 1944 1346 0.03 <br />2004 25.0 17.2 8.2 1970 1399 0.02 <br />2005 17.0 14.9 8.0 1929 1321 0.03 <br />2010 30.0 26.7 8.0 2027 1419 0.03 <br />The units for the figures in the above table are; flow (gpm), pH (standard units); <br />conductivity (umhos/cm); total dissolved solids (mg/1) and iron (mg/1). Iron was measured <br />potentially dissolved through 2005. The current discharge permit requires iron to be <br />measured as dissolved and total recoverable. Dissolved iron is presented in the table. <br />SPECIAL ANALYSIS <br />None <br />WET TESTS <br />Not required by discharge permit. <br />Discharge Monitoring Reports (DMRs) <br />DMRs are submitted quarterly to the Colorado Department of Public Health and <br />Environment with copies to the Division of Reclamation Mining and Safety and are included <br />herein by reference. <br />ANTICIPATED IMPACT <br />Discharge from outfall 001 may slightly impact the quality of water in North Thompson <br />Creek. The mine water discharge has a low iron content and an acceptable pH, however <br />its conductivity is moderately high. The following table presents the impact outfall 001 <br />would have on the conductivity of North Thompson Creek at varying discharge rates.