REP26018

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 9/22/2006
• Doc Name: 2005 AHR Appendix E Thru H
• From: Hydro Geo Inc
• To: DRMS
• Annual Report Year: 2005
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Spring G-16
Water Quality and Field Parameters
•

Mountain Coal Wes[ Elk Mine
Monitorin Location Sprin G-16 Baseline 2005 water year
DesCri tion Units Minimum Maximum Mean 5/2/2005 6/4/2005 9/20/2005
Field Parameters
Flow m 4.2s t.ss 7.0
Electrical Conductivity µmhos/cm 575 7t7 5a3
H SU 7.42 7.89 7.4a
Tem erature °C °C
Tem erature °F °F as as.s a9.z
Comment
Laborato Parameters
Name of Certified Lab ACZ
Lab Reference # L57as6-Oa
Sam le Date 6/4/2005
Lab Test Date s/e-7/7
Sam led B
Alkalinity (Total CaCO~) mgA
Aluminum, dissolved m A
Anions me /I
Arsenic, dissolved m ll
Arsenic, total m ~
Bicarbonate m /I 247 447 307
Boron, dissolved m ~
Cadmium, dissolved m A
Calcium, dissolved m fl 55.2 55.9 55.6
Carbonate m A
Cation -Anion Balance m /I
Cations me /I
Chloride m /I 2 t2 5
Conductivity µmhos/Cnt 529 1120 691 556
Co er, dissolved
Hardness /I
m /I
1so
a53
220
H droxide m ~
Iron, dissolved m /I 0.09 0.01 -o.ot
Iron, total m A 4.83 0.56 0.17
Lead, dissolved m /I
Ma nesium, dissolved m A 15.t 15.a 15.3
Man anese, dissolved m /I
Man anese, total m /I 0.07 o.ot
Mercu ,total m /I
Mol bdenum dissolved m /I
Nitrate as N ,dissolved m A
NihateMitrite as N m /I 0.07 o.ts o.t
Nitrite as N ,dissolved m /I
N SU 7.i a.z z7 e.a
Phos hate m ~
Phos horns Ortho ,dissolved m /I o.ts o.oa
Potassium, dissolved m /1
Selenium, total m /I
Sodium Absor lion Ratio SAR talc. 1.a 2 t.s
Sodium, dissolved m /I 58.7 84.5 61.3
Sulfate m /I ta.2 200 51.6
7DS Ratio talc.
TDS Calc. m ~
TDS m fl 274 700 349 330
TSS m 4 t9a 21 s
Zinc, dissolved mg/I

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

West Elk Mine
E-10 2005 Annual Hydrology Report HydroGeo, Inc.