REP26018

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 9/22/2006
• 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 13-3
Water Quality and Field Parameters
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Mountain Coal West Elk Mine
Monitoring Location Spring 13.3 Baseline 2005 Water Year
Descri lion Units Minimum Maximum Mean 5/11/2005 6/6/2005 9/19/2005
Field Parmeters
Flow m 50 6.45 0.28
Electrical Conductivi umhos/cm 52a 678 397
H SU 6.68 6.77 6.83
Tem stature °F 43.5 42.7 58.6
Comment was 24-3-B
Laborato Parameters
Name of Certified Lab ACZ
Lab Reference # L51554-06
Sam le Date fi/6/2005
Lab Test Date 619-6/29
Sam led 8
Alkalini Total CaCO3 m /I 11a
Aluminum, dissolved m /I -0.03
Anions me A 3.8
Arsenic, dissolved m A
Arsenic, total m A -0.0005
Bicarbonate m /I 114
Boron, dissolved m /1 0.01
Cadmium, dissolved m /I -0.005
Calcium, dissolved m A 35.8
Carbonate m /I -2
Cation -Anion Balance m /I 0.0
Cations me /I 3.8
Chloride m A 2
Conductivi umhos/cm 379
Co er, dissolved m A -0.01
Hardness m /I 127
H droxide m 0 '2
Iron, dissolved m A -0.01
Iron, total m /I 0.03
Lead, dissolved m A -0.04
Ma nesium, dissolved m A 9.2
Man anese, dissolved m /I -0.005
Man anese, total m /I -0.005
Mercu ,total m /I -0.0002
Mol bdenum, dissolved m /I -0.01
Nitrate as N ,dissolved m /I
Nitrate/Nitrite as N m /I 0.03
Nitrite as N), dissolved m A
Fi SU 8.1
Phos hate m /I -0.03
Phos horns Ortho ,dissolved m fl -0.01
Potassium, dissolved m /I 1.4
Selenium, total m /I -0.001
Sodium Abso lion Ratio SAR talc. 1.11
Sodium, dissolved m /I 26.4
Sulfate m A 70
TDS Ratio talc. 1.16
TDS (Calc. m /I 215
TDS m /I 250
TSS m /I -5
Zinc, dissolved mg/l -0.01

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

West Elk Mine
E4 2005 Annual Hydrology Report HydroGeo, Inc.