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Bowie Resources Limited <br />Bowie No. 2 Mine <br />2002 Annual Hydrology Report <br />AW-4 <br />Alluvial Well <br />Top of Pipe Elevation - 5977.92' <br />Depth - 60' <br />Pipe 1.12' Above Ground <br />Ground Water <br />Initiated 11/23/1996 11/23/1996 11/23/1996 11/2311996 <br />Activated 3/27/1997 3/27/1997 3/27/1997 3/27/1997 <br />Date 11/23/2002 9/24/2002 6/16/2002 2/28/2002 <br />1I <br />u <br />• <br />Summary Information <br />Field <br />Parameters: .: Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Slatic Water Level Feel 32.42 42.94 60.78 15.54 29.78 88.38 29.31 15.54 28.43 28.31 <br />FieldComment <br />ph su 6.8 6.9 7.0 6.7 7.0 7.3 6.9 6.9 6.8 6.9 <br />Conductivity umhos/cm 5300 5500 5700 2900 3904 5300 3200 3300 3300 3300 <br />Temperature Celsius 112 11.9 12.6 10.5 12.7 15.5 11.4 13.8 ~ 14.9 11.8 <br />Lati <br />Parameters: . <br />UNITS <br />Bicarbonate m /L 624 707 790 493 628 758 618 <br />Carbonate mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Chloride mg/L 57 60 63 49 100 193 160 <br />Condudivi umhos/cm 3880 4495 5110 3040 4526 9490 3040 <br />Hardness m /L 2650 2670 2690 <MDL 1282 2730 949 <br />Nitrate-Nitrite mg/L 0.10 021 0.32 cMDL 028 121 0.41 <br />Ammonia mg/L 0.09 022 0.34 <MDL 0.43 1.13 0.6 <br />pH su 7.1 7.3 7.5 7.1 7.3 7.8 7.4 <br />Phosphate mg/L <MDL <MDL <MDL <MDL 0.02 D.12 <MDL <br />ResidueFilterable-TDS m /L 4830 5080 5330 2410 3576 4990 2410 <br />Sulfate mg/L 2620 2920 3220 1080 1864 2760 1080 <br />Arsenic mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Cadmium mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Calcium mg/L 465 481 496 146 302 496 146 <br />Iron (Dissolved) m /L <MDL 0.04 0.07 0.00 0.11 0.73 0.06 <br />Iron (Total) mg/L 0.10 0.14 0.17 0.16 0.44 0.95 0.35 <br />Magnesium (Dissolved) mg/L 353 357 361 142 225 362 142 <br />Man anese (Dissolved) m /L 022 0.43 0.64 0.00 0.65 1.52 0.46 <br />Man anese (Total) m /L 0.18 0.40 0.62 025 0.72 1.47 0.84 <br />Mercury mg/L <MDL <MDL <MDL <MDL 0.0000 0.0003 0.0003 <br />Selenium mg/L 0.00 0.00 0.00 <MDL 0.000 0.002 <MDL <br />Sodium m /L 590 646 702 250 445 684 250 <br />Zinc mg/L <MDL cMDL <MDL <MDL 0.01 0.04 <MDL <br />Alluvial Wells AW-1 through A W-6 are located north of Old State Highway 133, near fhe entrance to the mine. <br />Baseline Information for Point AW-0 is derived from events beginning on 11/23/96 through 3/27/97. <br />Point inFluenced by mining on 3/27/97. <br />Monitoring Point Table 105 <br />Revised 03/04 <br />