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EFCI Southfield Mine - 2009 Annual Hydrology Report March 10, 2010 <br />TABLES <br />MW-23 WATER QUALITY DATA <br />PARAMETER UNITS 2009 Sample Dates: <br />06/01/09 12/01/09 2009 <br />AVERAGE 1979- 2009 <br />MIN. AVE. MAX. <br />H lab units 8.9 8.4 8.7 6.2 8.2 8.9 <br />Conductivity at 25C umhos/cm 1380 1110 1245 210 1000 2820 <br />em rature field de C 15.1 14.5 14.8 10.0 14.7 24.5 <br />Solids, total dissolved mg/1 830 710 770 156 647 1870, <br />Bicarbonate as CaC03 m /I 477, 337 407 150 351 1100 <br />Calcium, dissolved m /I 14.6 56.8 35.7 2.2 8.3 56.8 <br />Chloride m I 18 23 21 3 16 24 <br />Magnesium, dissolved m I 3.3 13.2 8.3 0. 1.1 13.2 <br />Nitrogen, ammonia mg/I 0.00 0.00 0.00 0.00 0.26 5.50 <br />Nitrogen, nitrate nitrite mg/1 0.19 0.33 0.26 0.04 0.37 0.64 <br />Phosphorus, ortho M911 0.06 0.05 0.06 0.00 0.06 0.23 <br />Phosphorus, total m /I 0.00 0.06 0.07 <br />Sodium, dissolved m /I 326 180 253 29 245 652 <br />Sulfate m /I 160 193 177 10 174 348 <br />Arsenic, dissolved m /I 0.0000 0.0014 0.0050 <br />Cadmium, dissolved mg/I 0.00 0.0 0.01 <br />Iron, dissolved m /I 0.00 0.0 0.00 0.00 0.88 24.20 <br />Manganese, dissolved m /I 0.008 0.000 0.004 0.000 0.032 0.697 <br />Mercury, dissolved m I 0.0000 0.0000 1 0.000 <br />Selenium, dissolved m /I 0.000 0.002 0.053 <br />inc, dissolved m /I 0.0 0.03 1 0.24 <br />NOTES: <br />1. Zero data values = parameter was analyzed for but not detected. <br />2. Blank data field = no data. <br />2009 AHR.doc WP Page 13