2009-07-01_REPORT - C1980007 (7)

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Lick Creek Flume Surface Water Quality and Field Parameters • • • Mountain Coal West Elk Mine Monitoring Location: Lick Creek Flume Baseline 2008 Water Year Description Units Minimum Maximum Mean 5/5/2008 6/8/2008 8/23/2008 Field Parameters 64 0 Dry Flow Staff Gau a . Electrical Conductivity umhos/cm 162 H SU M 7.87 8.70 p Temperature (°C) °C 7.4 Comment Laboratory Parameters 3 Enviro-Chem Name of Certified Lab 081950 Lab Reference # 6/8/2008 Sample Date 6/9-7/3 Lab Test Date P. Holder Sampled B Alkalinity (Total CaCO3) m /I Aluminum, dissolved m /I 0.12 0.12 0.12 Anions meq/1 Arsenic, dissolved m /l 0.001 0.001 0.001 Arsenic, total m /l Bicarbonate m /I 56 229 111 Boron, dissolved m /l Cadmium, dissolved m /l Calcium, dissolved m /l 25.5 25.5 25.5 Carbonate m /I Cation - Anion Balance % Cations me /1 Chloride m /l umhos/cm 118 8 481 4 238 115.21 Conductivity Copper, dissolved m /I Hardness m /I 45 169 87 Hydroxide m /I m /I 0.56 0.13 0.11 Iron, dissolved m /I 0.49 11.3 4.06 2.3 Iron, total Lead, dissolved m /I total Lead m /I , Magnesium, dissolved m /l 5.3 6.9 6.1 Manganese, dissolved m /l 0.007 0.015 0.012 Manganese, total m /l 0.003 0.39 0.11 Mercur , total m /I Mol bdenum, dissolved m /I 0.01 0.005 Nitrate (as N), dissolved m /I Nitrate/Nitrite (as N m /I 0.13 0.04 Nitrite (as N), dissolved m /l 57 7 pH (lab) SU 7.1 8.75 7.85 . Phosphate m /I Phosphorus (Ortho), dissolved m /I 1.67 0.19 Potassium, dissolved m /I Selenium, dissolved m /I Selenium, total m /l Sodium Absorption Ratio (SAR) calc. 0.59 1.08 0.86 dissolved Sodium m /I 23.6 23.6 23.6 , lf t S m /I 8.5 47.2 21.03 a e u TDS Ratio calc. m /I TDS (Calc.) m /I 90 169 111 TDS TSS m /I 4 ]614 157 63 Zinc, dissolved mg/I Baseline and WY 2000 data adapted from WWE (2001). 2 Enviro-Chem Analytical, Grand Junction, CO ,'Zero values denote readings below lab detection levels (MDL). West Elk Mine C-11 2008 Annual Hydrology Report HydroGeo, Inc.