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Bowie Resources, LLC Surface Water <br />Bowie No. 2 Mine <br />2004 Annual Hydrology Report Steph-low <br />• Stevens Draw -Drainage System <br />Elevation - 7000' <br />Initiated 9I27I1995 9I27A995 9Y27/1995 9/27/1995 <br />Activated <br />Date 11/18/2004 9/2&2004 6/23Y1004 4/1/2004 <br />Summary Information <br /> Baseline Operation <br />UNITS Min Ave Max Min Ave Max <br />Flow GPM 0.00 0.42 1.58 0 0 0 0 <br />FieldComment Dam Dry D <br />ph su 7.9 8.2 8.4 <br />Conductivi umhos/cm 1020 1139 1310 <br />Temperature Celsius 3.8 10.8 17.2 <br /> UNITS <br />Bicarbonate mglL 452 495 554 <br />Chlodde mglL 14 16 20 <br />Conductivi umhoslan 1020 1093 1180 <br />Hardness mglL 343 382 433 <br />Nitrate-Nitd[e mglL 0.02 0.20 0.97 <br />Oil and Grease mglL <MDL 1 4 <br />pH su 8.0 8.2 8.3 <br />Phosphate mglL <MDL <MDL <MDL <br />ResidueFilterable-TDS mglL 660 718 780 <br />ResidueNOnFilterable-TS mglL <MDL 21 58 <br />SAR <MOL 2.28 3.22 <br />Sulfate mglL 150 170 190 <br />Aluminum mglL 0.05 0.53 1.71 <br />Arsenic mglL <MDL 0.001 0.002 <br />Cadmium m <MDL <MDL <MDL <br />Callum mglL 49.4 59.6 72.4 <br />Co per m <MDL 0.002 0.010 <br />Iron (Total mglL 0.27 0.82 2.57 <br />Lead mglL <MDL <MDL <MDL <br />Magnesium mglL 41.3 55.9 66.2 <br />Manganese Total mglL 0.070 0.211 0.566 <br />Marco mglL <MDL <MDL <MDL <br />Molyebdenum mglL <MDL <MDL <MDL <br />Selenium mglL <MDL 0.0002 0.001 <br />Sodium mg1L 99.8 120.0 152.0 <br />Zinc mglL <MDL 0.01 0.03 <br />The area of concern for monitoring point Steph-low has not been affected by the mining operation. Therefore, all rooorded <br />nonitoring events are considered Baseline. <br />The montoring point location for Lower Sfevens Draw is kxated in Stevens Draw, just bebw Pond 1 and Spdng 14. It is aaessed by a <br />southern fork of the Stevens Draw road. , <br />~~ <br />Baseline Information Collection initiated on 9/27/95 and not yet wnsidered complete. <br />Point Stepfiaow has not been influenced by mining. F19Ur@ NO. 123 <br />