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Lower Dry Fork Flume <br />Surface Water Quality and Field Parameters <br />• <br />0 <br />• <br />Mountain Coal West Elk Mine YO <br />Baseline pg Water Year <br />Monitoring Location: Lower Dry Fork Fl ume <br /> Units Minimum Maximum Mean 5/5/2008 6/7/2008 8/23/2008 <br />Description <br />Field Parameters <br />Staff Gauge or cfs <br />1.02 <br />0.33 0.35 <br />Flow <br />Electrical Conductivity umhos/cm 327 <br />96 <br />7 369 320 <br />8 <br />.39 <br />.47 <br />8 <br /> <br />PH <br />C) <br />t S C 1.2 . <br />1 8.9 <br />.0 1 <br />1 <br />6 <br />ure ( <br />Tempera <br /> <br />Comment <br />Laboratory Parameters 3 <br />Enviro-Chem <br />Name of Certified LabZ 08/933 <br />Lab Reference # /2008 <br />6/7 <br />/200 <br />Sample Date 6/ <br />Lab Test Date P. Holder <br />Sampled B <br />Alkalinity (Total CaCO3) m g/1 <br />Aluminum, dissolved m g/1 <br /> me /1 <br />Anions <br />Arsenic, dissolved m g/1 <br />l <br />t <br />i <br />t m g/1 <br />o <br />a <br />c, <br />Arsen <br />t m /I 118 324 220 <br />e <br />Bicarbona <br />d <br />l <br />di m /l <br />ve <br />sso <br />Boron, <br />lved <br />di <br />i m g/1 <br />sso <br />um, <br />Cadm <br />l <br />d <br />di m g/1 87.9 87.9 87.9 <br />ve <br />sso <br />Calcium, <br />t m /I <br />e <br />Carbona <br />Cation - Anion Balance % <br /> me /1 <br />Cations m g/1 8.4 4.2 <br />Chloride <br />it <br />d <br />ti <br />C umhos/cm 207 1920 755 336.96 <br />y <br />uc <br />v <br />on <br />Copper, dissolved m /I <br /> m g/1 125 726 360 <br />Hardness m g/1 <br />Hydroxide <br />d m /I 0.178 0.049 0.2 <br />Iron, dissolve <br />l <br />t m /I 0.02 84 5.6 2.42 <br />a <br />Iron, to <br />d <br />l <br />di m g/1 <br />ve <br />sso <br />Lead, <br />l <br />t <br />d <br />t m g/1 <br />- <br />- <br />a <br />, <br />o <br />Lea - 29 <br />dissolved <br />Magnesium m g/1 9.8 49 <br />, <br />dissolved <br />Man anese m /I 0.008 0.013 0.011 <br />, <br />Manganese, total m g/1 46.4 1.4 <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />Nitrate (as N), dissolved m g/1 <br />Nitrate/Nitrite (as N) m /I 0.1 0.3 0.2 <br />Nitrite (as N), dissolved m /I <br />9 <br />2 <br />8 <br />7.14 <br />pH (lab) SU 6.9 . <br />t <br />h <br />h m g/1 <br />- <br />- <br />e <br />a <br />osp <br />P <br />Phosphorus (Ortho), dissolved m /I - 0.763 0.048 <br />Potassium, dissolved m /I <br />Selenium, dissolved m /I <br />Selenium, total <br />Sodium Absorption Ratio (SAR) m g/1 <br />calc. <br />0.71 <br />1.48 <br />1.11 <br />lv <br />d <br />di <br />i m /I 69 69 69 <br />sso <br />e <br />um, <br />Sod 249 <br /> m g/1 3 5 613 <br />Sulfate <br />TDS Ratio calc. <br />TDS (Calc.) m g/1 <br />m g/1 158 1388 581 253 <br />TDS <br />TSS m g/1 1.2 1098 144 58 <br />Zinc, dissolved mg/1 <br />Baseline and WY 2000 data adapted from WWE (2001). <br />2 Enviro-Chem Analytical, Grand Junction, CO <br />Zero values denote readings below lab detection levels (MDL). <br />West Elk Mine <br />C-8 2008 Annual Hydrology Report HydroGeo, Inc.