REP23812

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 4/25/2003
• Doc Name: 2002 AHR Appendix E Thru H
• From: Mountain Coal Company
• To: DMG
• Annual Report Year: 2002
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Spring G-24
Water Quality and Field Parameters
I•

Mountain Coal West EIk Mine
Monitoring Location Spring G-24 Baseline 2002 Water Year
Descri tion Units Minimum Maximum Mean 4/24/2002 6/18/2002 9/9/2002
Field Parameters
Flow m 0.53 0.5 0.4
Electrical Conductivi umhos/cm 721 1115 960
H SU 7.68 7.78 6.84
Tem erature oC 7.4 9.8 11.7
Comment
Laborato Parameters
Name of Certified Lab ACZ
Lab Reference # L37330-07
Sam le Date 6/18/2002
Lab Test Date 6/20-7116
Sam led B GV
Alkalini Total CaCO3 m /I
Aluminum, dissolved m /I 0.08 0.04
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I 0.001 0.001 0.001
Bicarbonate m /I 267 376 307
Boron, dissolved m /I
Cadmium, dissolved m /I
Calcium, dissolved m /I 56.4 56.4 56.4
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 1.2 10 4.4
Conductivi umhos/cm 550 564 557 820
Co er, dissolved m /I
Hardness m /I 176 233 203
H droxide m /I
Iron, dissolved m /I 0.1 0.03 0.02
Iron, total m /I 2.28 0.45 0.03
Lead, dissolved m /I
Ma nesium, dissolved m /I 15.9 16.5 16.2
Man anese, dissolved m /I 0.006 0.002
Man anese, total m /I 0.048 0.005
Mercu ,total m /I
Mol bdenum, dissolved m /I
Nitrate as N ,dissolved m /I
Nitrate/Nitrite as N m /I 0.05 0.1 0.08
Nitrite as N ,dissolved m /I
H SU 7.2 8.3 7.9 7.4
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0.105 0.027
Potassium, dissolved m /1
Selenium, total m /I
Sodium Absor [ion Ratio SAR talc. 1.8 1.8 1.8
Sodium, dissolved m /I 58.9 58.9 58.9
Sulfate m /I 21.2 70 30.5
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 214 520 362 510
TSS m /I 102 21 8
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 rted

West Elk Mine
E-5 2002 Annual Hydrology Report HydroGeo, Inc.