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Bowie Resources Limited <br />Bowie No. 2 Mine <br />2002 Annual Hydrology Report <br />DH-25 <br />C Gulch -Drill Hole <br />Pipe Elevation - 7144.17 <br />Pipe 2.3' above ground <br />Depth - 325' <br />Ground Water <br />Initiated 6/12/1995 6/12/1995 6/12/1995 6/12/1995 <br />Activated 3/30/1997 3/30/1997 3/30/1997 3/30/1997 <br />Date 11/22/2002 9/25/2002 6/19/2002 4/30/2002 <br />Summary Information <br /> <br /> <br /> <br />l~.a,,,,Bte e, Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Static Water Level Feet 314.62 315.44 316.61 173.79 311.69 320.38 31926 319.35 319.50 319.07 <br />FieldComment <br />ph su 6.6 7.6 7.9 7.3 7.7 8.0 7.6 7.7 7.7 8 <br />Conductivi umhos/cm 4800 5712 5683 3700 4730 5000 4700 4700 4800 4700 <br />Temperature Celsius 75.6 17.9 20.2 11.4 16.7 18.9 16.7 18.8 78.6 15 <br />Lea <br />Rar, pte a ~`. ~ <br />UNITS <br />Bicarbonate mg/L 1730 2203 2480 2470 3092 5060 3710 2600 <br />Carbonate mg/L <MDL <MDL <MDL <MDL 9 77 <MDL <MDL <br />Chloride mg/L 99 107 110 77 99 108 103 103 <br />Conductivity umhos/cm 4170 4698 4910 4230 4475 4630 4480 4230 <br />Hardness mg/L 90 107 721 <MDL 57 104 47 63 <br />Nitrate-Nitrite m /L <MDL 0.04 0.08 <MDL 0.11 0.61 <MDL 0.06 <br />Ammonia mg/L 2,06 2.37 2.80 1.62 2.93 11.50 2.30 1.97 <br />pH su 7.5 7.9 8.1 7.7 8.0 8.3 8.1 7.7 <br />Phosphate mg/L 0.12 0.68 220 <MDL 0.37 1.46 1.46 0.54 <br />ResidueFilterable (TDS mg/L 2960 3133 3280 2200 2924 3100 2900 2950 <br />Sulfate mg/L 200 428 600 <MDL 43 740 <MDL <MDL <br />Arsenic m /L <MDL 0.007 0.002 <MDL 0.001 0.003 0.001 <MDL <br />Cadmium mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Calcium m /L 14.1 16.3 18.5 7.6 13.9 21.9 7.6 10.3 <br />Iron (Dissolved) mg/L 0.11 0.14 020 <MDL 023 1.12 0,11 0.11 <br />Iron (Total) m /L 0.54 1.03 1.63 0.57 15.22 67.00 67 0.90 <br />Ma nesium m /L 13.2 16.7 18.4 6.7 11.8 16.0 6.7 9 <br />Manganese (Dissolved) mg/L 0.03 0.04 0.04 <MDL 0.03 0.06 0.02 0.02 <br />Manganese (Total) mg/L 0.04 0.06 0.09 0.03 0.75 325 3.25 0.06 <br />Mercu mg/L <MDL <MDL <MDL <MDL 0.0002 0.0072 0.0005 0.0003 <br />Selenium mg/L <MDL <MDL <MDL <MDL 0.0003 0.001 <MDL <MDL <br />Sotlium mg/L 1240 1293 1330 259 1146 1940 911 259 <br />Zinc m /L <MDL <MDL <MDL <MDL 0.03 020 <MDL 0.03 <br />Driq Hole 25 is located immediately above the mine portals on a southern facing slope at the end of an old coal exploration roatl. <br />Baseline Information for Point DH-25 is derived from events beginning on 6172/95 through 3/30/97. <br />Point inFluenced by mining on 3/30/97. <br />Monitoring Point Table 90 <br />Revised 03/04 <br />