2009-04-13_REPORT - C1996083 (4)

Home Browse Search

Bowie Resources, LLC Bowie No. 2 Mine 2008 Annual Hydrology Report Summary Information • • Deer-low Canal - Deer Trail Ditch Elevation - 6920 Surface Water Initiated 6/14/1995 6/14/1995 6/14/1995 6/14/1995 6/14/1995 Activated 3/30/1997 3/30/1997 3/30/1997 3/30/1997 3/30/1997 Date 11/25/2008 922/2008 8/11/2008 6/18/2008 4/22/2008 7 Baseline Operation UNITS Min Ave Max Min Ave Max Flow GPM 0 8 32 0 7 83 0 0 0 1.25 0 Water Level in Flume Feet 0.00 0.05 0.17 FieldComment No Flow No Flow No Flow No Flow ph su 6.8 8.3 9.0 8.1 8.4 9.2 8.2 Conductivity umhos/crn 80 276 638 60 202 720 60 Temperature Celsius 4.9 13.1 21.2 3.1 13.0 21.5 14.5 DO mg/L 0.0 3.7 10.7 0.0 5.5 9.3 7.8 I i: I'a = UNITS Bicarbonate 41 70 118 39 93 127 39.02 Chloride <MDL 1 2 <MDL 2 4 2.76 Chromium III Crlll <MDL <MDL <MDL Chromium VI CrIV <MDL <MDL <MDL Cyanide, Total <MDL <MDL <MDL Conductivity 97 148 238 98 202 308 104.1 Hardness Hmg/L 48 67 96 33 79 111 32.98 Nitrate-Nitrite <MDL 0.07 0.17 <MDL 0.01 0.04 <MDL Nitrate <MDL 0.08 0.17 <MDL 0.54 2.69 Nitrite <MDL 0.01 0.02 <MDL 0.00 0.01 Ammonia 0.10 0.18 0.25 Oil and Grease <MDL <MDL <MDL <MDL 2 2 <MDL pH 7.5 7.8 8.0 7.7 8.1 8.6 8.15 Phosphate mg/L <MDL 0.03 0.08 <MDL 0.03 0.08 0.02 ResidueFilterable-TDS mg/L 30 93 150 70 169 302 129 ResidueNonFilterabl e-TSS mg/L 6 101 286 <MDL 17 41 SAR 0.21 0.38 0.68 <MDL 0.44 0.352 Sulfate mg/L <MDL 7 10 <MDL 11 d 10.7 Sulfide S mg/L <MDL <MDL Aluminum mg/L 0.25 3.03 7.68 0.18 0.63 0.87 Arsenic mg/L <MDL 0.001 0.002 <MDL 0.0011 0.0007 Boron 0.78 0.78 0.78 Cadmium <MDL 0.001 0.003 <MDL 0.01 0.05 0.001 Calcium 13.4 18.8 26.9 9.1 21.4 31.1 9.1 Copper <MDL <MDL <MDL <MDL 0.004 0.017 0.017 Iron (Dissolved) <MDL <MDL <MDL <MDL 0.03 0.10 Iron (Total) H 0.45 3.83 9.79 0.10 0.51 1.01 0.36 Lead <MDL <MDL <MDL <MDL 0.0071 0.0400 0.02 Magnesium 3.4 4.9 6.9 2.5 6.0 8.6 2-49 Manganese (Dissolved) <MDL <MDL <MDL <MDL 1.3 6.2 Manganese (Total) 0.012 0.075 0.193 0.001 0.029 0.107 0.026 Mercury <MDL 0.00007 0.0002 <MDL 0.0001 0.0002 0.0001 Molyebdenum mg/L <MDL <MDL <MDL <MDL 0.0002 0.0010 0.001 Nickel mg/L <MDL <MDL <MDL Selenium mg/L <MDL <MDL <MDL <MDL 0.002 0.006 0.0007 Silver mg/L <MDL <MDL <MDL Sodium mg/L 3.7 7. 5.3 i 3.9 12.6 31.5 5.1 Zinc mg/L 0.03 0.03 0.04 <MDL 0.02 0.05 0.031 The lower end of Deer Trail Ditch is monitored at a point where the ditch empties into the Fire Mountain Canal. Baseline Information for Point Deer-low is derived from events beginning on 6/14/95 through 3/30/97. Point influenced by mining on 3/30/97. Figure No. 106