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 G-7
Water Quality and Field Parameters

u

Mountain Coal West Elk Mine
Monitoring Location Spring G-7 Baseline 2005 water Year
Descri tion Units Minimum Maximum Mean 5/3/2005 6/7/2005 9/20/2005
Field Parameters
Flow m 12.8 6.57 1.47
Electrical Conductivity µmhos/cm 523 681 568
H SU 6.84 6.83 7.48
Temperature (°C) °C
Tem erature (°F) °F 44.9 45.0 55.4
Comment
Laborato Parameters
Name of Certified Lab ACz
Lab Reference # L51623-03
Sam le Date 6/7/2005
Lab Test Date 6/13/2005
Sam led B
Alkalinity (Total CaCO3) mg/I
Aluminum, dissolved m /I 0.05 0.05 0.05
Anions me /I
Arsenic, total m /I
Bicarbonate m /I 177 184 180.5
Boron, dissolved m /I
Cadmium, dissolved m /I
Calcium, dissolved m /I 41.8 41.8 41.8
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 1 0.5
Conductivity µmhos/cm 387 414 400.5 464
Co er, dissolved m /I
Hardness m /I 134 142 138
H droxide m /I
Iron, dissolved m /I 0.04 0.07 0 0.01
Iron, total m /I 0.35 0.4 0.375 0.07
Lead, dissolved m /I 0.02 0.01
Lead, total m /I
Ma nesium, dissolved m /I 6.8 7.2 7
Man anese, dissolved m /I
Man anese, total m /I 0.005 0.006 0
Mercu ,total m /I
Mol bdenum, dissolved m A
NitratelNitrite as N m /I 0.08 0.1 0.09
H lab SU 7.8 8.1 7.95 7.4
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0.014 0.007
Potassium, dissolved m /I
Selenium, dissolved m /I
Selenium, total m /I
Sodium Absor lion Ratio SAR talc. 1.54 1.63 1.6
Sodium, dissolved m fl 42.8 42.8 42.8
Sulfate m /I a0 50 a5
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 230 230 230 290
TSS m /I 10 30 20 12
Zinc, dissolved mg/I

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

West Elk Mine
E-9 2005 Annual Hydrology Report HydroGeo, Inc.