REP45780

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 9/16/2004
• Doc Name: 2003 Annual Hydrology Report Appendix F Through H
• From: Hydro Geo Inc
• To: DMG
• Annual Report Year: 2003
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Well SOM-129-H
Water quality and Field Parameters
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Mountain Coal West EIk Mine
Monitoring Location Well SOM-129-H Baseline 2003 Water Year
Descri lion Units Minimum Maximum Mean 4/11/2003 6/5/2003 9/29/2003
Field Parameters
Water Level De th feet 221.71 223.74 224.75
Electrical Conductivi umhos/cm 14130 13080 13050
H SU 7.97 7.88 8.22
Tem eralllre OC 58.6 63.6 62.4
Comment
Laboreto Parameters
Name of Certifed Lab ACZ
Lab Reference # L43179-04
Sam le Date 9/29/2003
Lab Test Date 10/2-10/29
Sam led B
Alkalini Total CaCO3 m /I 3770
Aluminum, dissolved m /I
Ammonia m /I 0.05
Anions m /I 151
Arsenic, dissolved !I -0.001
Arsenic, total m /I
BlCarbonate m /I 3770
Boron, dissolved m /I 1.3
Cadmium, dissolved m /I -0.05
Calcium, dissolved m /I 14
Carbonate m /I -2
Cation -Anion Balance % o
Cations me /I 151
Chloride m !l 2fi80
Conductivi umhos/cm 11800
Co er, dissolved m /I
Hardness m /I 72
H droxide m /I -2
Iron, dissolved m /1 0.3
Iron, total m A 0 9.5 2 1.15
Lead, dissolvetl m /I -0.2
Ma nesium, dissolved m /I 9
Man anese, dissolved m /I -0.03
Man anese, total m /I 0 0.3 0.1 -0.03
Merw ,dissolved m /I -0.0002
Mol bdenum, dissolved m I
Nitrate/Nitrite as N m I -0.02
Nitro en, ammonia m /I 2.05
H SU 8.4
Phos hate m /I 0.12
Phos horns Ortho ,dissolved m /I 0.04
Potassium, dissolved m /I 16
Selenium, dissolved m /I -0.001
Selenium, total m /I
Sodium Absor lion Ratio SAR talc. 176
Sodium, dissolved m /I 3390
Sulfate m /I 10
TDS Ratio talc. 0.98
TDS Calc. m /I 8380
TDS m /I 3208 3924 3559 8210
TSS m /I
Zinc, dissolved m P 0.86

ACZ -ACZ Labs, Steamboat S rin s, Colorado
' Standard is for reference ur oses onl
NA - not a livable NM -not measured NR -not re orted

West Elk Mine
G-17 2003 Annual Hydrology Report HydroGeo, /nc.