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Bowie Resources Limited <br />Bowie No. 1 Mine <br />2002 Annual Hydrology Report <br />P1003 <br />East Roatcap Creek -Pond 10-3 <br />Depth - 3' <br />Elevation -6680 <br />Surface Water <br />Initiated 10/1/1991 10/1/1991 10/1/1991 10/1/1991 <br />Activated 11/1/1993 11/1/1993 11/1/1993 11/1/1993 <br />Date 12/12/2002 9/29/2002 6/27/2002 4/30/2002 <br /> <br />• <br />Summary Information <br />preld ~ :. vv ~. <br />t~afamefer&~a" n~'~v r~~ Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow GPM 0.0 0.7 2.5391 0.0 6.2 26.25 0 0 9.4 2.5 <br />Freeboard Feet 0.0 0.0 0 0.0 0.2 2.68 2.68 2.25 0.0 0 <br />Temperature Celsius 0.5 11.8 24.3 13.6 22.0 8.1 <br />Conductivity umhoslcm 80 123 155 70 162 460 140 90 150 <br />pH su 7.2 7.8 8.7 7.7 7.5 7.6 <br />Field Comments <br />Lab <br />Parameters ~`,- <br />UNITS <br />Bicarbonate mg/L 46.0 70.0 114 68 <br />Carbonate mg/L 0.0 0.0 0 <MDL <br />Chloride mg/L 1.0 1.8 3 3 <br />Conductivity umhos/cm 97.0 136.1 222 122 <br />Hardness mg/L 48.0 67.0 111 59 <br />pH su 6.6 7.3 7.7 7.5 <br />ResidueFilterable-TDS mg/L 60.0 95.4 160 90 <br />ResidueNonFilterable-TS mg/L 10.0 52.4 184 12 <br />SAR 0.1 0.2 0.24 0.18 <br />Sulfate mg/L 0.0 12.0 30 <MDL <br />Calcium (Dissolved) mg/L 12.4 15.4 20.7 16.3 <br />Magnesium (Dissolved) mg/L 3.9 5.8 10.1 4.5 <br />Sodium (Dissolved) mg/L 2.3 3.6 5.8 3.2 <br />TDS Ratio (grav./talc.) 1.0 1.2 1.32 1.32 <br />Pond 10.3 is a man made pond (approximately 50' x 30'J with an earthem berm located on fhe south and southeast sides. The pond is <br />located on the SWf/4NE1/4 of Section f0, T13S, R92W. Source of surface water is from the Overtand Ditch via both natural and man <br />made drainages. (Simon Hydro Search, 92) <br />Baseline Information for Point P7003 is derived from events beginning on 10/1/91 through 11/1/93. <br />Point influenced by mining an 11/1/93. <br />Monitoring Point Table 37 <br />(Revised 03/04) <br />