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Marr Mine - 2007 Annual Hydrology Report <br />TABLE 10 - MINE AREA SURFACE WATER QUALITY DATA <br />May 2007 <br /> 4/?/05 4/11/2005 4/19/2005 6/8/2005 4/12/2006 3/21/2007 312712007 4/312007 <br />STATION 301 <br />Flow Rate cfs 0.488 0.085 NF NF NF 1.03 0.207 0.045 <br />Field Temperature © 2 2 6 11 8 <br />H -field s.u. 8.1 8.1 8.2 8.1 7.8 <br />EC - field umhos/cm 85 200 180 <br />Oil & Grease NONE NONE NONE NONE NONE <br />Settleable Solids mL/L/h <0.2 <.1 < 1 <br /> <br />STATION 302 <br />Flow Rate cfs NF NF NF NF NF 0.033 0.027 0.002 <br />Field Temperature © 5 6 8 <br />H - field s.u. 8.1 8 7.9 <br />EC - field umhos/cm 75 100 130 <br />Oil & Grease NONE NONE NONE <br />Settleable Solids mL/L/h <.1 <.1 <br /> <br />STATION 303 <br />Flow Rate cfs NF NF NF NF NF RECL RECL RECL <br /> <br />STATION 304 <br />Flow Rate cfs 1.065 0.071 NF 0.101 NF 0.557 0.241 0.093 <br />Field Temperature © 3.0 2.0 15.0 6.0 8.0 8.0 <br />H -field s.u. 8.2 8.0 8.0 8.2 7.9 7.9 <br />EC - field umhos/cm 100.0 100.0 150.0 <br />Oil & Grease NONE NONE NONE NONE NONE NONE <br />Settleable Solids mL/L/h <0.2 <0.2 <.1 <•1 <br /> <br />STATION 305 <br />Flow Rate cfs 0.64 0.035 0.001 0.001 0.25 0.207 0.053 0.022 <br />Field Temperature © 3.0 1.0 8.0 16.0 13.1 5.0 11.0 8.0 <br />H -field s.u. 8.1 8.0 8.0 8.1 8.1 8.2 8.0 7.9 <br />EC - field umhos/cm 774.0 95.0 100.0 140.0 <br />Oil & Grease NONE NONE NONE NONE NONE NONE NONE NONE <br />Settleable Solids mL/L/h <0.2 <0.2 <.1 <.1 <.1 <br /> <br />STATION 321 <br />Flow Rate cfs 0.12 NF NF 0.001 NF 0.206 0.0413 0.003 <br />Field Temperature © 4.0 15.0 6.0 10.0 8.0 <br />H - field s.u. 8.0 8.0 8.1 8.0 8.0 <br />EC - field umhos/cm 40.0 80.0 80.0 <br />Oil & Grease NONE NONE NONE NONE <br />Settleable Solids mL/L/h <0.2 <0.2 <•1 <.1 <br />NF = No Flow <br />* = EC Equipment Failure <br />Note: No flows on dates not shown <br />RECL = Reclaimed <br />6371/2007/2007 hydrology rpt Page 1I5