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-16
Water Quality and Field Parameters

•
Mountain Coal West EIk Mine
Monitoring Location Spring G-16 Baseline 2002 Water Year
Descri lion Units Minimum Maximum Mean 4/24/2002 6/17/2002 9/9/2002
Field Parameters
Flow m 1.6 0.25 0.2
Electrical Conductivi umhos/cm 583 672 679
H SU 8.09 7.96 6.93
Tem erature oC 8.05 16.5 14.8
Comment
Laborato Parameters
Name of Certified Lab ACZ
Lab Reference # L37306-06
Sam le Date 6/17/2002
Lab Test Date 6/20-7/10
Sam led B Gv
Alkalinit Total CaCO3 m A
Aluminum, dissolved m /I
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I
Bicarbonate m /I 241 441 307
Boron, dissolved m /I
Cadmium, dissolved m /I
Calcium, dissolved m /I 55.2 55.9 55.6
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 2 12 5
Conductivi umhos/cm 529 1120 691 604
Co er, dissolved m /I
Hardness m /I 160 453 220
H droxide m /I
Iron, dissolved m /I 0.06 0.01 0.06
Iron, total m /I 4.63 0.56 2.91
Lead, dissolved m /I
Ma ^eSIUm, dissolved m /I 15.1 15.8 15.3
Man anese, dissolved m /I
Man anese, total m /I 0.07 0.01
Mercu ,total m /I
Mol bdenum, dissolved m /I
Nitrate as N ,dissolved m /I
Nitrate/Nitrite as N m /I 0.07 0.16 0.1
Nitrite as N ,dissolved m /l
H SU 7.1 8.2 7.7 8.2
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0.19 0.04
Potassium, dissolved m A
Selenium, total m /I
Sodium Atuor lion Ratio SAR talc. 1.4 2 1.8
Sodium, dissolved m /I 58.1 64.5 61.3
Sulfate m /I 18.2 200 51.6
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 274 700 349 380
TSS m /I 194 21 134
Zinc, dissolved m /I

ACZ -ACZ Laborato 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
E-3 2002 Annual Hydrology Report HydroGeo, Inc.