REP37337

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 4/17/2007
• Doc Name: 2005 AHR Appendix A Thru D
• From: Hydro Geo Inc
• To: DRMS
• Annual Report Year: 2005
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Lower Dry Fork
Surtace Water Quality and Field Parameters
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•

C-8
Mountain Coal West Elk Mine
Monitoring Location L. Dry Fork Flume Baseline 2005 Water Year
Descri lion Units Minimum Maximum Mean 5/1/2005 6/5/2005 9/6/2005
Field Parameters
Flow Staff Gau a or cfs 0.16 0.07 0.40
Electrical Conductivi umhos/cm 709 1773 435
H SU 7.9 8.46 8.50
Temperature (C C
Temperature (F) F 07.2 57.8 67.5
Comment
Laborato Parameters'
Name of Certified Lab ACZ '
Lab Reference # L51525-02
Sam le Date 6/5/2005
Lab Test Date 6/8-620
Sam led B
Alkalini Total CaCO3 m /I
Aluminum, dissolved m /t
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
Cations me /I
Chloride m /I 8.4 4.2
Conductivi Umhos/cm 207 1920 755 1420
Co er, dissolved m /I
Hardness m /I 125 726 360
H droxide m /l
Iron, dissolved m /I 0.178 0.049 0.08
Iron, total m /I 0.02 84 5.6 0.27
Lead, dissolved m /I
Lead, total m /I
Ma nesium, dissolved m /I 9.8 49 29
Man anese, dissolved m /I 0.008 0.013 0.011
Man anese, total m /I 46.4 1.4
Mercu ,total m /I
Mol bdenum, dissolved m /I
Nitrate as N ,dissolved m /1
NitratelNitrite as N m ll O.t 0.3 0.2
Nitrite as N ,dissolved m /I
H lab SU 6.9 9 8.2 8.4
Phos hate m /I
Phos horns Ortho ,dissolved m /I 0.763 0.048
Potassium, dissolved m /I
Selenium, dissolved m /I
Selenium, total m /I
Sodium Abso lion Ratio SAR talc. 0.71 1A8 1.11
Sodium, dissolved m /I 69 69 69
Sulfate m /I 35 613 249
TDS Ratio talc.
TDS Calc. m /I
TDS m /I 158 1388 581 1060
TSS m /I 1.2 1098 144 -5
Zinc, dissolved mg/I
'Baseline, WY 2000, and WY 2001 data ada led from WWE.
ACZ - AC2 Laboratories, Inc., Steamboat S rin s, CO
Ne alive values denote readin s below lab detection levels
NM -Not Measured

West Elk Mine
2005 Annual Hydrology Report HydroGeo, Inc.