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-2-H
Water Quality and Field Parameters
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Mountain Coal West EIk Mine
Monitoring Location Well SOM-2-H Baseline 2003 Water Yaar
Descri tion Units Minimum Maximum Mean
Field Parameters
Water Level De th feet
Electrical Conductivi umhos/cm
H SU
Tem erature oC
Comment Obstruction Obstruction Obstruction
Laborato Parameters
Name of Certified Lab
Lab Reference #
Sam le Date
Lab Test Date
Sam led B
Alkalini Total CaC03 m /I
Aluminum, dissolved m /I
Ammonia m /I 0.14 0.19 0.165
Anions me /I
Arsenic, dissolved m /I 0.001 0.001 0.001
Arsenic, total m /I
Bicarbonate m /I 989 1140 1060.5
Boron, dissolved m /I
Cadmium, dissolved m /I o 0 0
Calcium, dissolved m /I 4.6 4.6 4.6
Carbonate m /I
Cation -Anion Balance
Cations me /l
Chloride m /I 310 450 390
Condudivit umhos/cm 2880 3060 2970
Co er, dissolved m /I
Hardness m /I 21 37 29
H droxide m /I
Iron, dissolved m /I 0 0.1 0.05
Iron, total m /I 1.76 19.4 7.5s
Lead, dissolved m /I 0 0 0
Ma nesium, dissolved m /I 2.4 2.4 2.4
Man anese, dissolved m )1 0.015 0.02 0.0175
Man anese, total m /I 0.037 0.27 0.11
Mercu ,dissolved m /I 0 0 0
Mol bdenum, dissolved m /I
Nitrate/Nitrite as N m /I 0 0.04 0.02
Nitro en, ammonia m /I
H SU B.1 8.9 8.6
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0 0.007 0
Potassium, dissolved m A
Selenium, dissolved m /I 0 0 0
Selenium, total m /I
Sodium Absor tion Ratio SAR talc. 46.8 70.4 59
Sodium, di5501ved m /I 739 739 739
Sulfate m /I 0 10 5
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 1656 1760 1718
TSS m /I
Zinc, dissolved m /I 0 0 0

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-12 2003 Annual Hydrology Report HydroGeo, Inc.