REP23812

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 4/25/2003
• Doc Name: 2002 AHR Appendix E Thru H
• From: Mountain Coal Company
• To: DMG
• Annual Report Year: 2002
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Spring G-14
Water duality and Field Parameters

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L. J
Mountain Coal West Elk Mine
Monitoring Location Spring G-14 Baseline 2002 Water Year
Descri lion Units Minimum Maximum Mean 4/24/2002 6/18/2002 9/912002
Field Parameters
Flow m 0.53 0.75 0.4
Electrical Conductivit umhos/cm 967 1288 1184
H SU 7.49 7.91 6.86
Tem erature oC 9.3 9.1 11.4
Comment
Laborato Parameters
Name of Certifed Lab ACZ
Lab Reference # L37330-08
Sam le Date 6/18/2002
Lab Test Date 6/20-7/13
Sam led B GV
Alkalini otal CaCO3 m /I
Aluminum, dissolved m /I
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I 0.001 0.001 0.001
Bicarbonate m /I 325 484 406
Boron, dissolved m /I
Cadmium, dissolved m /I
Calcium, dissolved m /I 54.9 61.4 58.2
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 2 14 6
Conductivi umhos/cm 553 682 637 958
Co er, dissolved m /I
Hardness m /I 215 307 257
H droxide m /I
Iron, dissolved m /l 0.11 0.02 -0.01
Iron, total m /I 3 0.1 -0.01
Lead, dissolved m /I
Ma nesium, dissolved m /I 21.5 29.8 24.6
Man anese, dissolved m /I
Man anese, total m /I 0.03 0.003
Mercu ,total m /I
Mol bdenum, dissolved m /I
Nitrate as N ,dissolved m /I
Nitrate/Nitrite as N m /I 0.12 0.21 0.16
Nitrite as N ,dissolved m /I
H SU 7.1 8.2 7.7 7.6
Phos hate m /I
Phos hones Ortho ,dissolved m /I 2.08 0.15
Potassium, dissolved m /I
Selenium, total m /I 0.001 0.001 0.001
Sodium Absor lion Ratio SAR talc. 2.22 3.11 2.53
Sodium, dissolved m /I 81.3 114 97.7
Sulfate m /I 40 150 88
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 324 708 499 620
TSS m /I 107 5 -5
Zinc, dissolved m /I

ACZ -ACZ Laborato Steamboat S rin s Colorado
`Standard is for reference ur oses one
NA - not a livable NM -not measured NR -not re orted

West Elk Mine
E-2 2002 Annual Hydrology Report HydroGeo, Inc.