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 G49 (1)
Water l]uality and Field Parameters
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Mountain Coal West Elk Mine
Monitoring Location Spring G49 Baseline 2003 Water Year
Descri lion Units Minimum Maximum Mean 4/13/2003 6/2/2003 9/23/2003
Field Parameters
Flow m 2.7 3.77 1.98
Electrical Conductivi umhos/cm 3540 3250 3360
H SU 7.16 7.32 7.08
Tern erature oC 45.9 47.5 45.8
Comment
Laborato Parameters
Name of Certified Lab AGZ
Lab Reference # L41471-10
Sam le Date 6/2/2003
Lab Test Date 6/5-6/13
Sam led B
Alkalini Total CaCO3 m /I
Aluminum, dissolved m /1 0.06 0.06 0.06
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I
Bicarbonate m /I 138 478 395
Boron, dissolved m /I
Cadmium, dissolved m /I
Calcium, dissolved m /I
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 2 16 12
Conduclivit umhos/cm 317 1800 1059 2650
Co er, dissolved m /I
Hardness m /I 81 877 584
H droxide m /I
Iron, dissolved m /I 0.02 0.08 0.05 -0.02
Iron, total m A 0.01 22.6 2.57 0.47
Lead, dissolved m A
Ma nesium, dissolved m /I 113 113 113
Man anese, dissolved m /I
Man anese, total m /I 0.502 0.056
Mercu ,total m /I
Mol bdenum, dissolved m ll
Nitrate as N m /I
Nitrate/Nitrite as N m /I 0.35 0.22
Nitrite as N m /I
H SU 7.9 8.3 8.1 7.6
Phos hate m /I
Phos horns Ortho ,dissolved m A 0.032 0.004
Potassium, dissolved m /I
Selenium, total m /I
Sodium Abso lion Ratio SAR talc. 2.35 4.59 3.12
Sodium, dissolved m /I
Sulfate m /I 60 906 633
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 230 1720 1280 50
TSS m /I 8 724 366 -5
Zinc, dissolved m /I

ACZ -ACZ Laborato Steamboat S do s Colorado
' Standard is for reference u oses onl
NA - not a linable NM -not measured NR -not re orted

West Elk Mine
E-73 2003 Annual Hydrology Report HydroGeo, Ine.