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Energy Fuels Coal, Inc. Southfield Mine - 2004 Annual Hydrology Report Apri15, 2005 <br />TABLE 8 <br />MW-65 WATER QUALITY DATA <br /> Sample Dates 2004 1983 - 2004 <br />Parameter Units 06107/04 12/07/04 Avera a Min. Ave. Max. <br />pH (lab) units 8.0 7.9 8.0 7.2 7.9 8.8 <br />Conductivity at 25C umhos/cm 1820 1630 1725 770 1841 2320 <br />Tem erature (field) de C 16.8 9.4 13.1 9.4 14.5 19.0 <br />Solids, total dissolved m /I 1110 1130 1120 1040.0 1137.3 1330.0 <br />Bicarbonate as CaC03 m /I 741 775 759 198.0 729.0 830.0 <br />Calcium, dissolved m /I 14.8 15.8 15.3 5.0 14.7 36.0 <br />Chloride m /I 138 133 136 60.0 149.5 630.0 <br />Ma nesium, dissolved m /I 2.70 3.20 2.95 2.00 3.00 8.00 <br />Nitro en, ammonia m /I 1.81 1.81 1.81 0.00 1.07 2.50 <br />Nitro en, nitrate nitrite m /I 0.03 0.00 0.02 0.00 0.20 2.66 <br />Phosphorus, artho m /I D.OS 0.13 0.09 0.00 0.09 0.64 <br />Phos horns, total m /I 0.07 0.11 0.16 <br />Sodium, dissolved m /I 401 441 421 370 447 543 <br />Sulfate m /I 70 60 65 12 85 587 <br />Arsenic, dissolved m /I 0.001 0.001 0.001 0.000 0.001 0.002 <br />Cadmium, dissolved ~ m /I 0.000 0.000 0.000 0.000 0.001 0.010 <br />Iran, dissolved m /I 0.060 0.090 0.075 0.020 0.223 1.810 <br />Man anese, dissolved m /I 0.117 0.149 0.133 0.020 0.112 0.162 <br />Mercury, dissolved m /I 0.000 0.000 0.000 0.000 0.000 0.003 <br />Selenium, dissolved m /I 0.000 0.000 0.000 0.000 0.001 0.012 <br />Zinc, dissolved m /I 0.050 0.030 0.040 0.000 0.021 0.060 <br />Notes: <br />1. Zero data values =parameter was analyzed for but not detected. <br />2. Blank data field = no data. <br />6417/2004 annualhydrpl.doc NWCC INC. Page 20 <br />