REP43087

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

East Gulch, East of Horse Gulch
Surface Water Quality and Field Parameters
•
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Mountain Coal West Elk Mine
Monitoring Location E. Gulch, E. of Horse Gulch Baseline 2003 Water Year
Descri lion Units Minimum Maximum Mean 4/12/2003 6/3/2003 9/18/2003
Field Parameters
Flow m D D D
Electrical Conductivi umhos/cm 260 480 402
H SU 7.7 8.4 8
Tem erature oC 4.8 14.8 10
Laborato Parameters
Name of Certified Lab
Lab Reference #
Sam le Date
Lab Test Date
Sam led B
Alkalini Total CaCO3 m /I 135 245 202
Aluminum, dissolved m /I 0.03 0.03 0.03
Anions me /I 4.s 4.9 4.9
Arsenic, total m /I
Bicarbonate m /I 135 2a5 202
Boron, dissolved m /I
Cadmium, dissolved m /I
Calcium, dissolved m /I 26.8 53.6 42.600
Carbonate m /I 6 0.5
Cation -Anion Balance m A
Cations me A a.s a.s a.s
Chloride m /I 1 4 2
Conductivit umhos/cm 453 453 453
Co er, dissolved m /I
Hardness m /I 95 190 156
H droxide m /I
Iron, dissolved m /I 0.05 0.05 0.05
Iron, total m /I 0.41 3.59 1.07
Lead, dissolved m /1
Ma nesium, dissolved m ~ 6.9 13.7 11.6
Man anese, dissolved m /I 0.012 0.012 0.012
Man anese, total m /I 0.01 0.094 0.068
Mercu ,total m /I
Mol bdenum, dissolved m !I
NiVatelNitrite aS N m /I O.OA 0.23 0.13
H SU 8 8 8
Phos hate m /I 0.2 0.2 0.2
Phos horns Ortho ,dissolved m /I 0.066 0.018
Potassium, dissolved m /I 1.8 1.8 1.8
Selenium, total m /1
Sodium Absor lion Ratio SAR talc. 0.94 1.65 1.5
Sodium, dissolved m A 20.9 47.8 40.2
Sulfate m /I
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 170 2so 252
TSS m /I 50 t7
Zinc, dissolved m /I

ACZ Labs, 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
C•14 2003 Annual Hydrology Report HydroGeo, Inc.