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EM Southfield Mine - 2008 Annual Hydrology Report April 15, 2009 <br />TABLE 12 <br />MAGPIE CREEK (DOWNSTREAM) WATER QUALITY DATA <br />(Monitoring Point MC-2) <br /> <br />PARAMETER <br />UNITS 2008 Sample Date: <br />2nd QTR. 4th QTR. 2008 <br />AVERAGE 1997 -2008 <br />MIN. AVE. MAX. <br /> No Flow No Flow No Flow <br />pH (field) units 6.2 7.4 8.3 <br />Conductivity (field) umhos/cm 53 241 360 <br />Temperature (field) de C 5.2 14.0 25.8 <br />Solids, total suspended m /I 64 302 678 <br />Solids, total dissolved m I 110 230 340 <br />Oil and Grease (visual) es/no 0 0 0 <br />SAR in water m /I 0.00 0.32 0.56 <br />Bicarbonate as CaC03 m /I 16 21 27 <br />Calcium m /I 4 35 57 <br />Chloride m /I 0 1 2 <br />Magnesium m /I 4.9 14.7 43.0 <br />Nitrogen, nitrate nitrite m /I 0.09 0.41 1.23 <br />Selenium m /I 0.0 0.0 0.0 <br />Phosphorus, ortho m /I 0.00 0.05 0.17 <br />Sodium m /l 3 11 17 <br />Sulfate m /I 30 120 190 <br />Aluminum m /I 9.12 49.04 188.00 <br />Arsenic m /I 0.0010 0.0057 0.0200 <br />Cadmium m /I 0.000 0.001 0.007 <br />Copper m /I 0.00 0.07 0.29 <br />Iron m /I 7.01 48.46 193.00 <br />Lead m /I 0.00 0.00 0.00 <br />Manganese m /I 0.171 0.899 3.490 <br />Mercury m /I 0.00 0.00 0.00 <br />Molybdenum m /l 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 />2008 AHR.doc WP Page 25