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

Lower Dry Fork
Surface Water Quality and Field Parameters
C
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Mountain Coal West Elk Mine
Monitoring Location L. Dry Fork Flume Baseline 2003 Water Year
Descri lion Units Minimum Maximum Mean 4/12/2003 6/3/2003 9/18/2003
Field Parameters
Flow cfs 0.03 0.04 0.05
Electrical Conductivi umhos/Cm 1496 1420 1166
H SU 7.31 7.58 8.58
Tem erature oC 49.9 75.4 53.6
Comment
Laborato Parameters
Name of Certified Lab ACZ
Lab Reference # L47507-08
Sam le Dale 6/3/2003
Lab Test Date 6/6-6/17
Sam led B
Alkalini Total CaCO3 m I
Aluminum, dissolved m I
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I
Bicarbonate m /I 118 324 220
Boron, dissolved m /I
Cadmium, dissolved m I
Calcium, dissolved m /I 87.9 87.9 87.9
Carbonate m /I
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 8.4 4.2
COnductiVi UmhOS/Cm 207 1920 755 1430
Co er, dissolved m /I
Hardness m /1 125 726 360
H droxide m /I
Iron, dissolved m /I 0.178 0.049 0.26
Iron, total m /I 0.02 84 5.6 5.69
Lead, dissolved m /I
Ma nesium, dissolved m /I 9.8 49 29
Man anese, dissolved m A 0.008 0.013 0.011
Man anese, total m A a6.a 1.4
Mercu ,total m /I
Mol bdenum, dissolved m /I
Nitrate as N ,dissolved m I
NitratelNitrite as N !I 0.1 0.3 0.2
Nitrite as N ,dissolved m /I
H SU 6.9 9.00 8.2 8
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0.763 0.048
Potassium, dissolved m /I
Selenium, total m /l
Sodium Absor lion Ratio SAR talc. 0.71 1.46 1.11
Sodium, dissolved m A 69 69 69
Sulfate m /I 35 613 249
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 158 1388 581 1050
TSS m /I 1.2 10911 144 80
Zinc, dissolved m /I

ACZ Labs, Steamboat S rin s, Colorado
Standard is for reference ur ses onl
NA - not a livable NM -not measured NR -not re orted

West EIk Mine
C-ti 2003 Annual Hydrology Report HydioGeo, inc.