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 SOM-2-H
Water Quality and Field Parameters
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Mountain Coal West Elk Mine
Monitoring Location Well SOM-2-H Baseline 2004 Water Year
Descri lion Units Minimum Maximum Mean
Field Parameters
Water Level De th feet
Electrical Conductivity µmhoslcm
H SU
Tem erature °C
Comment Obstructed Obstructed Obstucted
Laborato Parameters
Name of Cert~ed Lab
Lab Reference #
Sam le Date
Lab Test Date
Sam led B
Alkalinity (Total CaCO3) mg/1
Aluminum, dissolved m ll
Ammonia m 0.14 0.19 O.1s5
Anions me /1
Arsenic, dissolved m /I 0.001 0.001 0.001
Arsenic, total m /I
Bicarbonate m /I 989 1140 1064.5
Boron, dissolved m /I
Cadmium, dissolved m /I 0 0 0
Calcium, dissolved m ll 4.6 a.s 4.6
Carbonate m /I
Cation -Anion Balance
Cations me /I
Chloride m n 310 450 390
Conductivity µmhoslcm 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 7.56
Lead, dissolved m /I 0 0 0
Ma nesium, dissolved m ll 2.4 2 4 2.4
Man anese, dissolved m !I 0.015 0.02 0.0175
Man anese, total m /I 0.037 0.27 0.11
Mercu ,dissolved m /1 0 0 0
Mol bdenum, dissolved m /l
Nitrate/Nitrite as N m ll 0 0.04 0.02
Nitro en, ammonia m /I
H SU 8.1 8.9 8.6
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0 0.007 0
Potassium, dissolved m /I
Selenium, dissolved m /I 0 0 0
Selenium, total m /I
Sodium Abso lion Ratio SAR talc. 46.8 70.4 59
Sodium, dissolved m R 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 mg/I o 0 0

ACZ Labs, Steamboat S rin 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
G•14 2004 Annual Hydrology Report HydroGeo, Ine.