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 CR-12
Wate Quality and Field Parameters
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Mountain Coal West Elk Mine
Monitoring Location Spring CR-12 Baseline 2002 Water Year
Descd lion Units Minimum Maximum Mean 4/30/2002 6/17/2002 9/26/2002
Field Parameters
Flow m 0.75 0.2 2
Electrical Conductivi umhos/cm 1468 1429 1990
H SU 8.16 8.04 7.65
Tem erdtUre oC 20.6 24.9 10.2
Comment
Laborato Parameters
Name of Certified Lab ACZ
Lab Reference # L37306-05
Sam 1e Date 6!1712002
Lab Test Date 6/20-7/10
Sam led B GV
Alkalinit otal CaCO3 m /I
Aluminum, dissolved m /I
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I
Bicarbonate m /I
Boron, dissolved m /I
Cadmium, dissolved m /1
Calcium, dissolved m /I
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I
Conductivi umhos/cm 1440
Co er, dissolved m /I
Hardness m /I
H droxide m /I
Iron, dlssolved m II 0.11
Iron, total m /I 1.58
Lead, dissolved m /I
Ma nesium, dissolved m /I
Man anese, dissolved m /I
Man anese, total m /I
Mercu ,total m /I
Mol bdenum, dissolved m /I
Nitrate as N m /I
Nitrate/Nitrite as N m /I
Nitrite as N m /I
H SU 8.4
Phos hate m /I
Phos horns Ortho ,dissolved m /I
Potassium, dissolved m /I
Selenium, total m /I
Sodium Absor lion Ratio SAR talc.
Sodium, dissolved m /I
Sulfate m /I
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 970
TSS m /I 332
Zinc, dissolved m /I

ACZ -ACZ Laborato Steamboat S rin s Colorado
` Standard is for reference u ses onl
NA - not a livable NM -not measured NR -not re orted

West Elk Mine
E-15 2002 Annual Hydrology Report HydroCreo, Inc.