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Energy Fuels Coal, Inc. Southfield Mine - 2004 Annual Hydrology Report Apri15, 2005 <br />TABLE 16 <br />SECOND ALKALI CREEK WATER QUALITY DATA <br />Monitorin PointSA-1 <br /> 2004 Sample Date: 2004 1997 -1999 <br />Parameter Units 04/13/04 12107/04 Average Min. Ave. Max. <br />pH (feld) units No flow No flow No flow 7.2 7.7 8.0 <br />Conductivity (Feld) umhos/cm 107 267 440 <br />Temperature (feld) deg C 8.3 14.3 19.2 <br />Solids, total suspended mg/I 0 150 874 <br />Solids, total dissolved mgll 108 358 930 <br />Oil and Grease (visual) yes/no n/a n/a nla <br />SAR in water mg/7 0.00 1.95 3.93 <br />Bicarbonate as CaCO3 mg/I 60 110 205 <br />Calcium, t rec mg/I 19.5 36.7 69.9 <br />Chloride mg/I 1.0 4.0 10.0 <br />Magnesium, t rec mg/I 5.3 14.0 32.7 <br />Nitrogen, nitrate/nitrite mg/I 0.00 0.04 O.DB <br />Selenium, t rec mg/I 0.000 0.001 0.003 <br />Phosphorus, ortho diss mg/l 0.113 0.150 0.178 <br />Phosphorous, total mg/I 0.215 0.215 0.215 <br />Sodium, t rec mg/I 13.1 63.1 157.0 <br />Sulfate mg/I 30.0 182.0 470.0 <br />Aluminum, t rec mg/I 0.84 3.08 5.89 <br />Arsenic, t rec mg/I 0.002 0.002 0.003 <br />Cadmium, t rec mg/I 0.000 0.000 0.000 <br />Copper, t rec mg/I 0.000 0.000 0.000 <br />Iron, t rec mg/I 0.17 1.90 4.36 <br />Lead, r rec mgfl 0.00 0.00 0.00 <br />Manganese, t rec mg/I 0.000 0.021 0.039 <br />Mercury, t rec mg/I 0.000 0.000 0.000 <br />Molybdenum, t rec mg/I 0.000 O.OOD 0.000 <br />Zinc, r rec mg/I 0.000 0.020 0.030 <br />NOTES: <br />-Zero data values =parameter was analyzed for but not detected. <br />-Blank data fields = no data. <br />- t rec =total recoverable <br />6477/2004 annualhydrptdoc NWCC INC. Page 32 <br />