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Well SOM-05-H-1 Water Quality and Field Parameters • i • I • Mountain Coal West Elk Mine Monitorin Location Well SOM-05-H-1 Baseline ~ 2001 Water Year DBSCd lion Units Minimum Maximum Mean 5/2/2001 6/232001 9/27/2001 Field Parameters Water Level De W feet 376.11 316.1 316.13 Electrical Conductivi umhos/cm H SU Tem erature oC Comment InsuMdent Water to Sample InsuKcient Water to Sample Insuffident Water to Sample Laborato Parameters Name of Certified Lab ` Lab Reference # ' Sam le Date Lab Test Date Sam led B Alkalini otal CaCO3 m Aluminum, dissolved ~ m Ammonia m Anions ~ me Arsenic, dissolved m 0.001 0.001 0.007 Arsenic, total m Bicarbonate m Ise use 766 Boron dissolved m Cadmium, dissolved m 0 0 0 Calcium, dissolved m 6 6 6 Carbonate m Cation -Anion Balance ~ % Cations ~ me Chloride m 9 9 9 Conductivi umhos/cm Co er, dissolved m Hardness m 23 23 23 H dioxide ~ m Iron, dissolved m 0.34 0.34 0.34 Iron, total m Lead, dissolved m Ma nesium, dissolved m t.9 t.9 t.9 Man anese, dissolved m /1 0.056 0.056 0.056 Man anese, total m Mercu ,total m 0 0 0 Mol bdenum dissolved m NitratelNitrile as N m 0 0 0 Nitro en; ammonia m H SU Phos hate m /I Phos horns Ortho ,dissolved m 0.007 0.007 0.007 Potassium, dissolved m Selenium, dissolved m 0 0 0 Selenium, total m Sodium Absor ti0n Ratfo SAR Ca1C. 32.9 32.9 32.9 Sodium, dissolved m 1 357 357 357 Sulfate m 30 30 30 TDS Ratlo calc. TDS Caid. - m TDS m 650 850 650 TSS m Zinc, dissolved m fl 0.01 0.01 0.01 AAL. Inc - Amedcan Assa Laboratories, Inc., S arks, Nevatla Standartl is for reference u ses onl NA - not a Iicabie NM • not measured NR -not re rted West Elk Mine G-e 2001 Annual Hydrology Report HydroGeo, Ina.