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Bowie Resources, LLC Surtace Water <br />Bowie No. 2 Mine <br />2004 Mnual Hydrology Report NFG-up <br />North Fork -Drainage System <br />Elevation - 5880 <br />Initiated 813011996 9!30/1996 9r30/1996 9/30/1996 9/3011996 <br />Activated 3/3111997 3/3111997 3/31/1997 3/31/1997 3/3111997 <br />Date 11/17/2004 9282004 824/2004 628/2004 3/182004 <br />Summary Infonnatan <br /> <br /> <br /> Baseline Operation <br /> UNITS Min Ave Max Min Ave Max <br />Flow CFS 99 292 610 53 470 2390 97 113 243 285 202 <br />FieldCamment <br />ph su 8.1 B.5 8.8 7.5 8.2 8.8 8.7 8.8 8.5 7.9 8.3 <br />CoMucti ' umhoslcm 160 167 180 60 165 260 160 170 220 110 130 <br />Tem rature Celsius 3.6 7.3 13.7 0.2 11.3 22.2 5.2 15.1 18.6 14.5 9.2 <br />DO m 0.0 7.1 11.7 9.4 9.1 7.5 9.4 9.1 <br /> UNITS <br />Bicarbonate m 88 93 98 43 87 135 87 - 57 <br />ChlorWe m 2 3 3 <MDL 3 7 4 3 cMDL <br />Chromium III DAII m <MDL <MDL <MDL <MDL <br />Chromium VI CM m <MDL <MDL <MDL <MDL <br />olds, Total m <MDL <MDL cMDL <MDL <br />Conductl umhos/cm 185 205 225 7 171 303 195 138 <br />Hartlness m 74 77 79 38 72 101 74 101 58 <br />Nitrate m <MOL 0.05 0.09 <MDL 0.29 3.47 CADL <MDL 0.03 <br />Nitrite m <MDL <MDL <MDL <MDL 0.002 0.010 <MDL <MDL <MDL <br />Ammonia m <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Oi18 Grease m <MDL <MDL <MDL <MDL 7 11 <MDL <MDL <br />H su 7.9 8.0 8.0 7.2 7.B 9.0 8.2 7.8 7.8 <br />Phos to m <MDL <MDL <MDL <MDL 0.01 0.04 <MDL <MDL <br />ResidueFitte2ble-TDS m 120 130 140 60 120 180 100 150 90 <br />ResldueNonFiltereble-TS m 10 11 12 <MDL 15 114 <MDL <MDL <br />SAR 0.42 0.60 0.78 <MDL 0.60 2.17 0.9 0.44 <br />Sulfate m 10 15 20 <MDL 16 30 10 20 20 <br />Sulfide S m <MDL 0.05 0.05 <MDL <br />Aluminum m O.OB 0.18 0.27 0.09 0.50 2.78 0.39 0.16 <br />Arsenic m <MDL <MDL <MDL <MDL 0.0004 0.0010 <MDL 0.0006 <MDL <br />Bomn m 0.03 0.04 0.04 0.04 <br />Cadmium m cMDL <MDL <MDL <MDL <MDL <MDL cMDL <MDL <MDL <br />Callum m 21.9 22.9 24.0 11.1 21.1 30.3 22.5 30 16.6 <br />Co r m <MDL cMDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Iron, Dissolved m 0.02 0.03 0.03 0.03 <br />Iran otal m 0.09 0.09 0.09 0.11 0.43 2.80 0.34 0.15 0.12 <br />Lead m <MDL <MDL <MDL <MDL 0.0002 0.0009 0.0004 0.0004 0.0001 <br />Ma nesium m 4.7 4.7 4.7 2.1 4.6 6.3 4.3 ~ 6.3 3.9 <br />Ma anew Dissolved m <MDL <MDL <MDL cMOL 0.45 2.80 0.005 <br />Ma anew otal m 0.011 0.015 0.019 0.006 0.019 0.067 0.012 0.021 ~ 0.016 <br />Merv m <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Mo hdenum m <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Nickel m <MDL <MDL <MDL <MDL <br />Selenium m <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <MDL <br />Silver m <MDL <MDL <MDL <MOL <br />Sodium m 8.6 12.0 15.3 3.3 15.4 41.2 17.7 7.6 <br />Zinc m 0.02 0.02 0.03 <MDL 0.01 0.03 <MDL 0.01 <MDL <br />Field parameters, except flaw, in the Upper North Fork of the Gunnison River monitomg point are taken on the river just above its cronfluence with <br />Hubbard Creek. Fbw data /or the North Frxk of the Gunnison river is obtalrred Iron USGS station #09132500. <br />Baseline Infarmatbn (or Pdm NFG~p is tlerivad from everds beginring on 9/30/96 tlrwgh 3131/97. <br />Poird influenced by mirurg on 3/31/97. <br />Figure No. 121 <br />