REP08730

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 8/25/2005
• Doc Name: 2004 AHR Appendix F Thru H
• From: HydroGeo Inc
• To: DMG
• Annual Report Year: 2004
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Well RPE-t
Water Quality and Field Parameters
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C_ J
Mountain Coal West EIk Mine
Monitoring Location Well RPE-1 Baseline 2004 Water Year
Descri lion Units Minimum Maximum Mean 4/25/2004 5127/2004 915/2004
Field Parameters
Water Level De th feet 27.2 29.39 29.39
Electrtcal Conductivity µmhoslcm zaso 2470
H SU 6.96 7.12
Tem ersfure °C 55.5 59.4
Comment
Laborato Parsmeters
Name of Certifed Lab
Lab Reference #
Sam le Date
Lab Test Date
Sam led B
Alkalinity (Total CaCO~) mgll
Aluminum, dissolved m 11
Ammonia m /I
Anions me /I
Arsenic dissolved m /I
Arsenic, total m /I
Bicarbonate m /I
Boron, dissolved m
Cadmium, dissolved m ll
Calcium, dissolved m /1
Carbonate m B
Cation -Anion Balance
Cations me A
Chloride m /I
Conductivity µmhoslcm
Co er, dissolved m /I
Hardness m /I
H droxide m /I
Iron, dissolved m /I
Iron, total m /I
Lead, dissolved m /l
Ma nesium, dissolved m A
Man anese, dissolved m 11
Man anese, total m ll
Mercu ,total m A
Mol bdenum, dissolved m /1
Nitrate/Nitrite as N m /I
Nitro en, ammonia m /I
H SU
Phos hate m /I
Phos horns Ortho ,dissolved m /I
Potassium, dissolved m /I
Selenium, dissolved m /I
Selenium, total m /I
Sodium Abso lion Ratio SAR talc.
Sodium, dissolved m /I
Sulfate m /I
TDS Ratio talc.
TDS Calc. m /I
TDS m /I
TSS m /I
Zinc, dissolved mg/I

ACZ Labs, 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
G-5 2004 Annual Hydrology Report HydroGeo, Inc.