REP08730

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 8/25/2005
• Doc Name: 2004 AHR Appendix F Thru H
• From: HydroGeo Inc
• To: DMG
• Annual Report Year: 2004
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Well SOM-73
Water Ouallty and Field Pammetera
C
r
LJ
•
G-9
Mountain Coal Weat Elk Mine
Manitorin Location Well SOM-13 Suellne 2001 Water Year
Descrt lion Units Minimum Maximum Mean 4/28/2004 5/27/2004 9/6/2004
Pield Parameters
Water Level De th feet 16z.11 1ez1a 182.09
Electdcal Conductivity µmhos/cm 1075 938 sae
H SU 7.42 7./S 7.39
Tem eratllre °C 53.3 fi2.7 60.5

Comment WL too low
ro sample WL too low
to sampb WL loo low
ro sample
Laborato Parameters
Name of Certified Lab
Lab Reference iF
Sam le Date
Lab Test Date
Sam led B
Alkalinity (Total CaCO~) mgA
Aluminum, dissolved m /I
AmmOnla m 0.375 0.487 0.421
Anions me I
Arsenic, dissolved m /I
Arsenic total m /l
BIWrbOnatB m ll 460 590 511
Boron, dissolved m A
Cadmium, dissolved m A
Calcium, dissolved m 0
Carbonate m 0
Cation -Anion Balance °1°
Cations me ll
Chlodde m p 6 13 10
Conductivity µmhos/cm
Co er, dissolved m 0
Hardness m /I 249 292 2fi4
H droxide m /I
Iron, dissolved m /l 0 0.027 o.dos
Iron, total m A 0.37 1.07 0.61
Leatl, dissolved A
Ma nesium, dissolvetl m A
Man anese, dissolved m fl 0.006 0.026 0.013
Man anese, total m A
Mercu ,total m !I
Mal bdenum, dissolved m A
Nitrate/Nitrite as N m /I
Nitro en, ammonia m 0
H SU 7.15 7.55 7.37
Phos hate m /I
Phos hbNB Ortho ,dissolvetl m fl 0 0.085 0.012
Potassium, dissolved m /I
Selenium, dissolved m A
Selenium, total m 0
Sodium Abso lion Ratio SAR talc.
Sodium, dissolved m /I
Sulfate m /I 32.9 77.5 61
TDS Ratio talc.
TDS Caic. m 11
TDS m A 512 688 622
TSS m 0
Zinc, dissolved m /I

ACZ Labs, Steamboat S do s, Colorado
Ne alive values denote readin s below lab detection levels
NA - not a livable NM -not measured NR - not re orted

West Elk Mine
2004 Annual Hydrology RaPort HydroGeo, /ne.