REP48339

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 9/13/2002
• Doc Name: 2001 AHR, Appendx E Thru Appendix H
• From: Mountain Coal Company
• To: DMG
• Annual Report Year: 2001
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Spring G7
Water Quality and Feld Parameters

Mountain Coal West Elk Mine
Monitodn Location S tin G-7" ~ Baseline toot Water Yea r
Descri lion Units Minimum Maximum Mean 4129/2001 6/24/2001 9/30/2001
Field Parameters
Flow 0.83 0.76 1.25
Electrical Conductive urtihos/cm a20 ago 410
H SU 8.3 6.3 8.2
Tem stature oC 10.3 13.8 3.1
Comment N.I: 1.25 m N.I.= 0.42 m
Laborato Parameters
Name of CeriiTied Lab ACZ
Lab Reference R L32668-02
Sam le Date 6/24/2001
Lab Test Date 8/27.7/11
Sam led B RH
Alkaline Total CaCO3 m
Aluminum dissolved m - 0.05 0.05 0.a5
Anions ma
Arsenic total m
Bicarbonate ~ m 177 184 180.5
Boron dissolved m "
Cadmium dissolved m
Calcium dissolved m 41.8 41.8 41.8
Carbonate ~ m
Cation -Anion Balance m
Cations me
Chloride m 1 Ob
Conductive umhos/cm 387 414 400.5 472
Co er dissolved rn
Hardness - m 134 142 13e
H droxide m
Iron dissolved m 0.04 0.07 0 0.34
Iron total m 0.35 O.4 0.375 1.16
Lead dissolved m 0.02 0.01
Ma nesium, dissolved m 6.8 7.2 7
Man anese, dissolved m
Man anese, total m 0.005 0.008 0
Mercu ,total m
Mol bdenum dissolved m
Nitrate/Nitrite as N m 0.08 0.1 0.09
H - ~ SU 7.8 8.1 7.95 7.5
Phos hate m
Phos horns Ortho ,dissolved m 0.014 0.007
Potassium, dissolved m
Selenium total m
Sodium Abso lion Ratio SAR talc. t5a 1.83 1.6
Sodium dissolved m 42.8 42.6 42.8
Sulfate ~ m 40 50 45
TDS Ratio - talc.
TDS Calc, m
TDS ~ m 230 230 230 310
TSS m - 10 30 20 46
Zinc dissolved rn

AAL. Inc -American Assa Laboratories, I nc. S arks Nevada
''Standard is for reference u oses on
NA - not a livable NM -not measured NR -not re rted
NI -new inflow
West Elk Mine
E-1 2001 Annual Hydrology Report HydroGeo, Inc.