2008-05-01_REPORT - C1996083 (4)

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Bowie Resources, LLC Bowie No. 2 Mine 2007 Annual Hydrology Report Field Parameters UNITS Min S34-23 Hubbard Creek -Spring 34-23 Elevation - 6650 Summary Information Baseline Operation Ave Max Min Ave Mai. Flow GPM 0.0 3.5 75.0 0.0 0.0 0.0 0 0 0 0 FieldComment Dry Dry Dry Dry Ph su 7.6 7.8 8.0 Conductivity umhos/cm 320 390 460 Temperature Celsius 12.1 14.0 15.9 Leh Parameters UNITS Bicarbonate mg/L 249 268 287 Chloride mg/L 2 3 4 Conductivity umhos/cm 537 545 552 Hardness mg/L 169 171 173 Nitrate-Nitrite mg/L <MDL 0.01 0.02 Oil and Grease mg/L <MDL <MDL <MDL PH su 8.1 8.3 8.4 Phosphate mg/L <MDL <MDL <MDL ResidueFilterable-TDS mg/L 330 335 340 ResidueNonFilterable-TSS mg/L <MDL 11 22 SAR <MDL <MDL <MDL Sulfate mg/L 30 40 50 Aluminum mg/L 0.32 0.95 1.57 Arsenic mg/L <MDL <MDL <MDL Cadmium mg/L <MDL <MDL <MDL Calcium mg/L 40.5 41.8 43.1 Co er mg/L <MDL <MDL <MDL Iron otal mg/L 0.25 0.77 1.29 Lead mg/L <MDL <MDL <MDL Magnesium mg/L 15.9 16.1 16.4 Manganese otal mg/L <MDL 0.013 0.026 Mercury mg/L <MDL <MDL <MDL Molyebdenum mg/L <MDL <MDL <MDL Selenium mg/L 0.001 0.001 0.001 Sodium mg/L 59.8 61.1 62.4 Zinc mg/L <MDL 0.005 0.010 The monitoring point forS34-23 is located high on the northern facing slopes that forms the Dove Gulch Canyon. It is accessed on foot from the remnants of an old coal exploration road in the mouth of Dove Gulch. It in one of three springs found in this location, orginating in the sandstone outcrops and discharges via sheet flow into Dove Gutch. • • Baseline Information for Point S34-23 is derived from events beginning on 6/9/98 through 12/8/03. Point influenced by mining on 12/8/03. Surface Water Initiated 6/9/1998 6/9/1998 6/9/1998 6/9/1998 Activated 12/8/2003 12/8/2003 12/8/2003 12/8/2003 Date 11!2/2007 8/31/2007 6/22/2007 5/28/2007 Figure No. 79