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Bowie Resources Limited Surface Water <br />Bowie No. 1 Mine <br />2003 Annual Hydrology Report P1003 <br />East Roatcap Creek -Pond 10-3 <br />Depth - 3' <br />Elevation -8680 <br />Initiated 10/1/1991 10/7/1991 10/7/7991 10/1/7991 <br />Activated 7111/1993 11/111993 71/111993 11!1/1993 <br />Date 12/22/2003 9/20!2003 6!30/2003 4/25/2003 <br />Summary Information <br /> <br />i• <br />e' <br />P..arame a Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow GPM 0.0 0.7 2.5391 0.0 5.5 26.25 0 0 0.2 1.9 <br />Freeboard Feet 0.0 0.0 0 0.0 0.2 2.68 0.7 0 0 <br />Temperature Celsius 0.5 12.0 24.3 19.2 8.3 <br />Conductivi umhos/cm BO 123 155 70 161 460 100 200 <br />pH su 7.2 7.8 8.7 7.4 7.6 <br />Field Comments <br />,dram; a UNITS <br />Bicarbonate mg/L 46.0 67.3 114 qg <br />Carbonate m /L 0.0 0.0 0 <MDL <br />Chloride !L 1.0 1.3 2 <MDL <br />Conductivity umhos/cm 97.0 133.7 222 105 <br />Hardness mg/L 48.0 66.1 111 53 <br />pH su 6.6 7.3 7.7 7.2 <br />ResidueFilterable-TDS m /L 60.0 94.0 160 80 <br />ResidueNonFilterable-TS mg/L 10.0 52.0 184 10 <br />SAR 0.1 0.2 0.24 0.14 <br />Sulfate m 2 0.0 12.0 30 <MDL <br />Calcium (Dissolved) mg/L 12.4 15.1 20.7 14.2 <br />Ma nesium (Dissolved) mglL 3.9 5.8 10.1 4.3 <br />Sodium (DissoYved) mglL 2.3 3.5 5.8 2.4 <br />Potassium m /L 0.0 0.5 2.1 <br />TDS Ratio (grav./talc.) 1.0 1.2 1.3 <br />Pond 10.3 is a man made pond (approximately 50' z 30) with an earthem berm located on the south and southeast sides. The pond is <br />located on the SWt/4NE1/4 of Section 10, T13S, R92 W. Source of suAace water is from fhe Overland Difch via both natural and man <br />made tlrainages. (Simon Hydro Search, 92) <br />Baseline Information for Point P7003 is tlenved from events txginning on 10/1/91 through 11/1/93. 1-1 Ufe NO. 62 <br />Point influenced by mining on 17/1/93. 9 <br />