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Well RPE-1 <br />Water Quality and Field Parameters <br />• <br />• <br /> <br />Mountain Coal West Elk Mine <br />Monitoring Location Well RPE-1 Baseline' 2007 Water Year <br />Description Units Minimum Maximum Mean 4/26/2007 5/30/2007 8/2212007 <br />Field Parameters <br />Water Level Depth feet 29.7 29.4 26.6 <br />Electrical Conductivity µmhos/cm 1190 <br />H SU 7.17 <br />Temperature (OF) OF 57.0 <br />Temperature (C <br /> <br />Comment °C <br /> <br />too shallow <br /> <br />too shallow <br />not enough water for <br />sample <br />Laboratory Parameters <br />Name of Certified Lab <br />Lab Reference # <br />Sample Date <br />Lab Test Date <br />Sampled B <br />Alkalinity (Total CaCO3) mg/I <br />Aluminum, dissolved m /I <br />Ammonia m /I <br />Anions me /l <br />Arsenic, dissolved m /I <br />Arsenic, total m /I <br />Bicarbonate m /I <br />Boron, dissolved m /I <br />Cadmium, dissolved m /I <br />Calcium, dissolved m /I <br />Carbonate m /I <br />Cation - Anion Balance % <br />Cations me /1 <br />Chloride m /I <br />Conductivity µmhos/cm <br />Copper, dissolved m /I <br />Hardness m /I <br />Hydroxide m q/1 <br />Iron, dissolved m /l <br />Iron, total m /I <br />Lead, dissolved m /I <br />Magnesium, dissolved m /l <br />Manganese, dissolved m q/1 <br />Manganese, total m /I <br />Mercury, total m /I <br />Molybdenum, dissolved m /I <br />Nitrate/Nitrite as N m /I <br />Nitrogen, ammonia m /I <br />H SU <br />Phosphate m /I <br />Phosphorus Ortho , dissolved m /I <br />Potassium, dissolved m /I <br />Selenium, dissolved m /I <br />Selenium, total m /I <br />Sodium Absorption Ratio SAR calc. <br />Sodium, dissolved m /I <br />Sulfate M q/1 <br />TDS Ratio calc. <br />TDS Calc. m /I <br />TDS m /l <br />TSS m /I <br />Zinc, dissolved mg/I <br />Baseline andWY 2000 data adapted from WWE (2001). <br />2 ACZ Labs, Steamboat Springs, Colorado <br />3 Negative values denote readings below lab detection levels <br />4 ACZ Lab Qualifiers: U - Analyte was analyzed for but not detected at the indicated MDL <br />H - Holding time exceeded; pH is a field test with an immediate hold time. <br />B - Analvte conc detected at a value bet method detection limit (MDL) and practical quantitation limit (PQL). <br />West Elk Mine <br />GS 2007 Annual Hydrology Report HydroGeo, Inc.