REP35905

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 4/17/2007
• Doc Name: 2005 AHR Appendix E Thru H
• From: Hydro Geo Inc
• To: DRMS
• Annual Report Year: 2005
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Spring Gd9
Water Quality and Field Parameters

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Mountain Coal West Elk Mine -
Monitoring location Spring Gd9 Baseline 2005 Water Year
Descd lion Units Minimum Maximum Mean 5/4/2005 616/2005 9/20/2005
Feld Parameters
Flow m 7.2 2.82 Wet
EleMdcal Contluctivity µmhos/cm 3120 2070
H SU 7.22 7.7
Temperature (°C) °C
Tem erature (°F °F 47.8 57.0
Comment
Laborato Parameters
Name of Certified Lab ACz
Lab Reference # L5t6z3-Ot
Sam le Dale 6/6/2005
Lab Test Date s/73-7/1
Sam led B
Alkalinity (Total CaCO~) mgA
Aluminum, dissolved m A o.os 0.06 0.06
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I
BlCarbOnate m /I 138 478 395
Boron, dissolved m /I
Cadmium, dissolved m A
Calcium, dissolved m /I
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 2 16 12
CondualVity µmhos/Cm 377 1800 1059 1850
Co er, dissolved m /l
Hardness m /I e1 877 Sea
H tlroxide m /I
Iron, dissolved m /I 0.02 0.09 005 0.03
Iron, total m /l 0.01 22.fi 2.57 0.07
lead, dissolved m /I
Ma nesium, d15501ved m /I 113 113 713
Man anese, dissolved m /I
Man anese, total m /I 0.502 0.056
Mercu ,total m /I
Mol bdenum, dissolvetl m /l
Nitrate as N m /I
Nitrate/Nitdte as N m A 0.35 0.22
Nitrite as N m /I
H SU 7.9 8.3 8.7 7.fi
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0.032 9.000
Potassium, dissolved m /I
Selenium, dissolved m /I
Selenium, total m /I
Sotlium Absor lion Ratio SAR calc. 2.35 4.59 3.72
Sotlium, dissolvetl m /I
Sulfate m /I 60 906 633
TDS Ratio talc.
TDS Calc. m /l
TDS m /I 230 1720 1290 7330
TSS m /I 8 724 366 14
Zinc, dissolved m /I

AC2 Laborato , Steamboat S tin s, Colorado
Ne alive values denote readin s below lab detection levels
NA - not a licable NM -not measuretl NR -not re orted

West EIk Mlne
E-27 2005 Annual Hydrology Report HydroGeo, Inc.