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Bowie Resources Limited <br />Bowie No. 1 Mine <br />2002 Annual Hydrology Report <br />P7004 <br />East Roatcap Creek -Pond 10-4 <br />Depth - 3' <br />Elevation -8780 <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 11/7/1993 <br />Date 12/12/2002 9/29/2002 6/27/2002 4/30/2002 <br />J <br />• <br />Summary Information <br />~I81d ~ ~ e <br />y..3 v k 6 *i <br />~?arameFei'k~l° ~FRGw '.=i~!! Baseline Operation <br /> <br />UNITS Min Ave Max Min Ave Max <br />Flow GPM 0.4 1.3 10.131 0.0 13.5 65.6 0 0 11.3 7.5 <br />Freeboard Feet 0.0 0.0 0 0.0 0.1 1.5 1.09 0.96 0.0 0 <br />Temperature Celsius 0.4 12.4 23.9 11.5 23.5 10.7 <br />Conductivity umhos/cm 110.0 182.8 225 40.0 128.3 490 120 90 110 <br />pH su 6.8 7.9 8.9 ~ 7.5 7.5 7.5 <br />Field Comments <br />>_ab,~a il 1 ~' <br />i,T t v <br />Pa'rameters>m ,, _ -=6. <br /> <br />UNITS <br />Bicarbonate mg/L 40.0 59.9 90 68 <br />Carbonate m /L <MDL <MDL <MDL <MDL <br />Chloride mg/L <MDL 1.2 2 2 <br />Conductivity umhos/cm 76.0 116.3 173 126 <br />Hardness mg/L 37.0 56.5 86 62 <br />pH su 6.6 7.2 7.9 ~ 7.3 <br />ResidueFilterable-TDS mg/L 60.0 82.3 120 90 <br />ResidueNonFilterable-TS mg/L 8.0 27.6 62 16 <br />SAR 0.1 0.2 0.18 0.16 <br />Sulfate m /L <MDL 9.3 20 <MDL <br />Calcium (Dissolved) mg/L 10.5 14.7 22 17.2 <br />Ma nesium (Dissolved) mglL 2.7 4.8 7.6 4.7 <br />Sodium (Dissolved) mg/L 1.8 2.8 3.9 3 <br />TDS Ratio ( rav./talc.) <MDL 1.0 1.35 1.32 <br />Pond 10-4 is a man made pond (approximately 50' x 50) with an earthen dam located on [he south side. The pond is located in the <br />SE7/4NW1/4 of Section 10, T13S, R92 W. Source of the surtace wafer is from the Overland Ditch. (Simon Hydro Search, 92) <br />Baseline Information for Point P1004 is derived from events beginning on 10/1/91 through 11/1/93. <br />Point inFluenced by mining on 11/1/93. <br />Monitoring Point Table 38 <br />(Revised 03/04) <br />