REP08333

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 9/16/2004
• Doc Name: 2003 Annual Hydrology Report Appendix D Through E
• From: Hydro Geo Inc
• To: DMG
• Annual Report Year: 2003
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Spring G-16
Water Quality and Field Parameters
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Mountain Coal West Elk Mine
Monitoring Location Spring G-16 Baseline 2003 Water Year
DeSCri tiOn Units Minimum Maximum Mean 4/10/2003 6/2/2003 9/23/2003
Field Parameters
Flow m 0.16 0.48 Wet
Electrical Conductivi umhos/cm 784 688 663
H SU 8.02 7.77 8.14
Tem erature oC 44.2 57.2 53
Comment
Laborato Parameters
Name of Certified Lab ACZ
Lab Reference # L41507-76
Sam le Date 6/5/2003
Lab Test Date 6/6-6/17
Sam led B
Alkalinit Total CaC03 m /I
Aluminum, dissolved m /I
Anions me A
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 ll
Cations me /I
Chloride m /I 2 12 5
Conductivi umhos/cm 529 1120 691 604
Co er, dissolved m A
Hardness m /I 160 453 220
H droxide m /I
Iron, dissolved m I 0.08 0.01 0.03
Iron, total m /I 4.63 0.56 0.59
Lead, dissolved m /I
Ma nesium, 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 A 0.07 0.16 0.1
Nitrite as N ,dissolved m A
H SU 7.1 8.2 7.7 8.5
Phos hate m /I
Phos horns Ortho ,dissolved m I 0.79 0.04
Potassium, dissolved m I
Selenium, total m /I
Sodium Absor 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 fl
TDS m /I 274 700 349 360
TSS m A 194 21 12
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 2003 Annual Hydrology Report HydroGeo, Inc.