REP14584

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 4/25/2003
• Doc Name: 2002 AHR Appendix A Thru D
• From: Mountain Coal Company
• To: DMG
• Annual Report Year: 2002
• 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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C-14
West EIk Mine
2002 Annual Hydrology Report

HydroGeo, Inc.
Mountain Coal West Elk Mine
Monitoring Location E. Gulch, E. of Horse Gulch Baseline 2002 Water Year
Descri lion Units Minimum Maximum Mean 4/25/2002 6/17/2002 9/10/2002
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 za5 202
Aluminum, dissolved m /I 0.03 0.03 0.03
Anions me /I a.9 4.9 4.9
Arsenic, total m A
Bicarbonate m !1 135 245 202
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 /I
Cations me /I 4.9 4.9 4.9
Chloride m /I 1 4 2
Conductivi umhos/Cm 453 453 453
Co er, dissolved m /I
Hardness m /I 95 190 156
H droxide m /1
Iron, dissolved m /I 0.05 0.05 0.05
Iron, total m /I 0.41 3.59 1.07
Lead, dissolved m /I
Ma nesium, dissolved m /I 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
Nitrate/Nitrite as N m /I 0.04 0.23 0.13
H SU 8 B 8
Phos hate m lV 0.2 0.2 0.2
Phos horns Ortho ,dissolved m /I O.oss 0.018
Potassium, dissolved m /I 1.8 1.8 1.8
Selenium, total m /I
Sodium Absor lion Ratio SAR talc. 0.94 1.65 1.5
Sodium, dissolvetl m /I 20.9 47.8 40.2
Sulfate m !I
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 170 z90 252
TSS m /I 50 17
Zinc, dissolved m 11

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