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Well SOM-2-H <br />Water Quality and Field Parameters <br /> <br />• <br />G-14 <br />Mountain Coal West Elk Mine <br />Monitoring Location Well SOM-2-H Baseline 2009 Water Year <br />Description Units Minimum Maximum Mean <br />Field Parameters <br />Water Level Depth feet <br />Electrical Conductivity µmhos/cm <br />pH SU <br />Temperature F <br />Comment O bstructed <br />Laboratory Parameters 3 <br />Name of Certified Lab <br />Lab Reference # <br />Sample Date <br />Lab Test Date <br />Sampled By <br />Alkalinity (Total CaCO3) mg/I <br />Aluminum, dissolved mg/I <br />Ammonia mg/I 0.14 0.19 0.165 <br />Anions meq/1 <br />Arsenic, dissolved mg/I 0.001 0.001 0.001 <br />Arsenic, total mg/I <br />Bicarbonate mg/I 989 1140 1064.5 <br />Boron, dissolved mg/I <br />Cadmium, dissolved mg/I 0 0 0 <br />Calcium, dissolved mg/I 4.6 4.6 4.6 <br />Carbonate mg/I <br />Cation -Anion Balance % <br />Cations meq/1 <br />Chloride mg/I 310 450 390 <br />Conductivity µmhos/cm 2880 3060 2970 <br />Copper, dissolved mg/I <br />Hardness mg/I 21 37 29 <br />Hydroxide mg/I <br />Iron, dissolved mg/I 0 0.1 0.05 <br />Iron, total mg/I 1.76 19.4 7.56 <br />Lead, dissolved mg/l 0 0 0 <br />Magnesium, dissolved mg/I 2.4 2.4 2.4 <br />Manganese, dissolved mg/I 0.015 0.02 0.0175 <br />Manganese, total mg/I 0.037 0.27 0.11 <br />Mercury, dissolved mg/l 0 0 0 <br />Molybdenum, dissolved mg/I <br />Nitrate/Nitrite as N mg/I 0 0.04 0.02 <br />Nitrogen, ammonia mg/I <br />pH SU 8.1 8.9 8.6 <br />Phosphate mg/I <br />Phosphorus (Ortho), dissolved mg/I 0 0.007 0 <br />Potassium, dissolved mg/I <br />Selenium, dissolved mg/I 0 0 0 <br />Selenium, total mg/I <br />Sodium Absorption Ratio (SAR) ca1c. 46.8 70.4 59 <br />Sodium, dissolved mg/I 739 739 739 <br />Sulfate mg/I 0 10 5 <br />TDS Ratio calc. <br />TDS (Calc.) mg/I <br />TDS mg/I 1656 1760 1718 <br />TSS mg/I <br />Zinc, dissolved mg/I 0 0 0 <br />Baseline and WY 2000 data adapted from WWE (2001). <br />West Elk Mine <br />2009 Annual Hydrology Report HydroGeo, Inc.