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EFCI Southfield Mine - 2010 Annual Hydrology Report May 30, 2011 <br />TABLE 11 <br />MAGPIE CREEK (UPSTREAM) WATER QUALITY DATA <br />(Monitoring Point MC-1) <br />PARAMETER UNITS 2010 Sample Date: <br />2nd QTR. 4th QTR. 2010 <br />AVERAGE 1991-2010 <br />MIN. AVE. MAX. <br /> No Flow No Flow No Flow <br />pH field units 6.5 7.6 8.8 <br />Conductivity field umhos/cm 30 67 201 <br />Temperature (field) de C 5.0 11.1 16.9 <br />Solids, total suspended m /I 0 1115 4920 <br />Solids, total dissolved m /I 60 131 260 <br />Oil and Grease (visual) es/no 0 0 0 <br />SAR in water m /I 0.00 0.43 0.76 <br />Bicarbonate as CaCO3 m /I 20 35 82 <br />Calcium m /I 9 60 399 <br />Chloride m /I 0 4 20 <br />Magnesium m /I 1.7 16.9 55.0 <br />Nitrogen, nitrate nitrite m /I 0.06 0.37 0.65 <br />Selenium m /I 0.0 0.0 0.0 <br />Phosphorus, ortho m /I 0.03 0.11 0.21 <br />Phosphorus, total m /I 0 0 1 <br />Sodium m /I 4 13 55 <br />Sulfate m /I 0 38 100 <br />Aluminum m /I 0.09 66.10 254.00 <br />Arsenic m /I 0.0010 0.0097 0.0300 <br />Cadmium m /I 0.000 0.001 0.005 <br />Copper m /I 0.00 0.07 0.28 <br />Iron m /I 0.06 63.58 239.00 <br />Lead m /I 0.00 0.04 0.20 <br />Manganese m /I 0.020 0.945 3.510 <br />Mercury m /I 0.00 0.00 0.00 <br />Molybdenum m /I 0.00 0.00 0.00 <br />Zinc m /I 0.0 0.2 0.7 <br />NOTES: <br />1. Zero data values = parameter was analyzed for but not detected. <br />2. Blank data fields = no data. <br />2010 AHR text.doc Page 21 <br />