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EFCI Southfield Mine - 2010Annual Hydrology Report <br />May 30, 2011 <br /> TABLE 13 <br /> SECOND ALKALI CREEK WATER QUALITY DATA <br /> (Monitoring Point SA-1) <br />PARAMETER UNITS 2010 Sample Date: 2010 1991-2010 <br /> 2nd QTR. 4th QTR. AVERAGE MIN. AVE. MAX. <br /> No Flow No Flow No Flow <br />H field units 7.2 7.7 8 <br />0 <br />Conductivity field umhos/cm 107 267 . <br />440 <br />Temperature field de C <br /> <br />Solids, total suspended <br />m /I 8.3 14.3 19.2 <br /> <br />Solids, total dissolved <br />m /I 0 150 874 <br /> <br />Oil and Grease visual <br />es/no 108 358 930 <br /> <br />SAR in water <br />m /I 0 0 0 <br /> <br />Bicarbonate as CaC03 <br />m /I 0.00 1.95 3.93 <br /> <br />Calcium <br />m /I 60 110 205 <br /> <br />Chloride <br />m /I 19.5 36.7 69.9 <br /> <br />Magnesium <br />m /I 1 4 10 <br /> <br />Nitrogen, nitrate nitrite <br />m /I 5.30 13.98 32.70 <br /> <br />Selenium <br />m /I 0.00 0.04 0.08 <br /> <br />Phosphorus, ortho <br />m /I 0.00 0.00 0.00 <br /> <br />Phosphorus <br />total <br />I 0.11 0.15 0.18 <br />, <br />Sodium m <br />m /I 0.22 0.22 0.22 <br /> <br />Sulfate <br />m /I 13 63 157 <br /> <br />Aluminum <br />m /I 30 182 470 <br /> <br />Arsenic <br />m /I 0.84 3.08 5.89 <br /> <br />Cadmium <br />m /I 0.0020 0.0022 0.0030 <br /> <br />Copper <br />m /I 0.000 0.000 0.000 <br /> <br />Iron 0.00 0.00 0.00 <br /> m /I 0.17 1.90 4 <br />36 <br />Lead m /I 0.00 0.00 . <br />0 <br />00 <br />Manganese m /I 0.00 0.02 . <br />0 <br />04 <br />Mercury m /I 0.0000 0.0000 . <br />0 <br />0002 <br />Molybdenum- m /I 0.00 0.00 . <br />0 <br />00 <br />Zinc m /I 0.00 0.02 . <br />0.03 <br /> <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 23