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TABLE 6 <br />MW-65 WATER QUALITY DATA <br />PARAMETER <br />UNITS <br />2012 Sample Dates: <br />06/13/12 11/28/12 <br />2012 <br />AVERAGE <br />1984 -2012 <br />MIN. AVE. MAX. <br />pH (lab) <br />units <br />8.0 <br />8.3 <br />■ <br />8.2 <br />` 7.2 <br />8.0 <br />8.8 <br />Conductivity at 25C <br />umhos /cm <br />1840 <br />1770 <br />1805 <br />` 770 <br />` 1853 <br />` 2320 <br />Temperature (field) <br />deg C <br />18.1 <br />12.4 <br />` 15.3 <br />` 9.4 <br />` 14.5 <br />` 19.0 <br />Solids, total dissolved <br />mg /I <br />1170 <br />1150 <br />• 1160 <br />` 1040 <br />` 1139 <br />1330 <br />Bicarbonate as CaCO3 <br />mg /I <br />754 <br />727 <br />` 741 <br />` 198 <br />` 736 <br />830 <br />Calcium, dissolved <br />mg /I <br />15.0 <br />16.3 <br />15.7 <br />` 0.0 <br />I. 14.7 <br />` 36.0 <br />Chloride <br />mg/I <br />150 <br />154 <br />152 <br />` 60 <br />` 148 <br />630 <br />Magnesium, dissolved <br />mg /I <br />3.0 <br />3.2 <br />` 3.1 <br />2.0 <br />` 3.0 <br />` 8.0 <br />Nitrogen, ammonia <br />mg /I <br />2.28 <br />2.11 <br />` 2.20 <br />` 0.00 <br />1.27 <br />2.50 <br />Nitrogen, nitrate nitrite <br />mg /I <br />0.65 <br />0.04 <br />` 0.35 <br />` 0.00 <br />` 0.21 <br />2.66 <br />Phosphorus, ortho <br />mg /I <br />0.11 <br />0.13 <br />` 0.12 <br />` 0.00 <br />` 0.10 <br />0.64 <br />Phosphorus, total <br />mg /I <br />` 0.07 <br />` 0.11 <br />0.16 <br />Sodium, dissolved <br />mg/I <br />427 <br />421 <br />` 424 <br />370 <br />` 441 <br />543 <br />Sulfate <br />mg /I <br />50 <br />50 <br />` 50 <br />` 12 <br />` 75 <br />587 <br />Arsenic, dissolved <br />mg /I <br />` 0.0000 <br />` 0.0007 <br />` 0.0023 <br />Cadmium, dissolved <br />mg /I <br />0.00 <br />` 0.00 <br />0.01 <br />Iron, dissolved <br />mg /I <br />0.02 <br />0.00 <br />` 0.01 <br />` 0.00 <br />` 0.18 <br />1.81 <br />Manganese, dissolved <br />mg /I <br />0.144 <br />0.140 <br />0.142 <br />` 0.020 <br />` 0.119 <br />` 0.162 <br />Mercury, dissolved <br />mg /I <br />` 0.0000 <br />` 0.0002 <br />0.0033 <br />Selenium, dissolved <br />mg /I <br />0.000 <br />` 0.001 <br />` 0.012 <br />Zinc, dissolved <br />mg /I <br />` 0.00 <br />` 0.02 <br />` 0.06 <br />NOTES: <br />1. Zero data values = parameter was analyzed for but not detected. <br />2. Blank data field = no data. <br />EFCI Southfield Mine - 2012 Annual Hydrology Report <br />April 18, 2013 <br />2012 AHR text doc <br />Page 16 <br />