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Energy Fuels Coal, Inc. Southfield Mine - 2004 Annual Hydrology Report April 5, 2005 <br />TABLE 15 <br />MAGPIE CREEK (DOWN STREAM) WATER QUALITY DATA <br />Monitorin Point MC-2 <br /> 2004 Sample Date: 2004 1997 - 2004 <br />Parameter Units 04/13/04 12107/04 Average Min. Ave. Max. <br />pH (field) units 8.3 No flow 8.3 6.2 7.4 8.3 <br />Conductivity (field) umhos/cm 360.1 360.1 53.2 240.7 360.1 <br />Temperature (field) deg C 25.8 25.8 5.2 14.0 25.8 <br />Solids, total suspended mgll 406.0 406.0 64.0 301.6 678.0 <br />Solids, total dissolved mg/I 260.0 260.0 110.0 230.0 340.0 <br />Oil and Grease (visual) yes/no No No n/a n/a n/a <br />SAR in water mg/I 0.37 0.37 0.0 0.32 0.56 <br />Bicarbonate as CaCO3 mg/I 16.0 16.0 16.0 20.6 27.0 <br />Calcium, t rec mg/I 52.5 52.5 4.3 34.6 56.7 <br />Chloride mg/I 2.0 2.0 0.0 1.2 2.0 <br />Magnesium, t rec mg/I 9.6 9.6 4.9 14.7 43.0 <br />Nitrogen, nitrate/nitrite mg/I 1.23 1.23 0.09 0.41 1.23 <br />Selenium, t rec mg/I 0.000 0.000 0.000 0.000 0.000 <br />Phosphorus, ortho diss mg/I 0.05 0.05 0.00 0.05 0.17 <br />Sodium, t rec mg/I 10.50 10.50 3.30 10.64 17.10 <br />Sulfate mg/I 140.0 140.0 30.0 120.0 190.0 <br />Aluminum, t rec mg/I 20.0 20.0 9.1 49.0 188.0 <br />Arsenic, t rec mg/I 0.0036 0.0036 0.0010 0.0057 0.0200 <br />Cadmium, t rec mg/l 0.000 0.000 0.000 0.0014 0.0070 <br />Copper, t rec mg/I 0.020 0.020 0.000 0.068 0.290 <br />Iron, t rec mg/I 18.30 18.30 7.01 48.46 193.00 <br />Lead, r rec mg/I 0.000 0.000 0.000 0.000 0.000 <br />Manganese, t rec mg/I 0.411 0.411 0.171 0.899 3.490 <br />Mercury, t rec mg/I 0.000 0.000 0.000 0.000 0.000 <br />Molybdenum, t rec mg/I 0.000 0.000 0.000 0.000 0.000 <br />Zinc, r rec mg/I 0.060 0.060 0.040 0.186 0.730 <br />NOTES: <br />-Zero data values =parameter was analyzed for but not detected. <br />- Blank data felds = no data. <br />- t rec =total recoverable <br />6417/2004 annualhydrpt.doc NWCC INC. Page 31 <br />