2010-06-30_REPORT - C1980007 ‎(7)‎

• Permit No: C1980007
• IBM Index Class Name: REPORT
• Doc Date: 6/30/2010
• Doc Name: 2009 AHR Appendix E Thru I
• From: HydroGeo, Inc
• To: DRMS
• Annual Report Year: 2009
• Permit Index Doc Type: Hydrology Report
• Email Name: TAK
• Media Type: D
• Archive: No

Well SOM-129-H
Water Quality and Field Parameters
•
E
Mountain Coal West Elk Mine
Monitoring Location Well SOM-129-H Baseline' 2009 Water Year'
Description Units Minimum Maximum Mean 5/8/2009 5/24/2009 8/12/2009 Q °
Field Parameters
Water Level Depth feet 11.9 42.1 124.6
Electrical Conductivity mhos/cm 773 655 929
H SU 8.97 8.87 9.08
Temperature °C °C 11.9 11.4 14.5
Comment
Laboratory Parameters 3
Name of Certified Lab 2 ACZ
Lab Reference # L77515-06
Sample Date 8/12/2009
Lab Test Date 8/14-8/19
Sampled B PH
Alkalinity (Total CaC03) mg/I
Aluminum, dissolved m /I
Ammonia m /I
Anions me /I
Arsenic, dissolved m /I
Arsenic, total m /I
Bicarbonate m /I
Boron, dissolved m /I
Cadmium, dissolved m /I
Calcium, dissolved m /I
Carbonate m /I
Cation - Anion Balance %
Cations me /I
Chloride mg/1
Conductivity mhos/cm 860
Copper, dissolved m /I
Hardness m /I
Hydroxide m /I
Iron, dissolved m /I 0.05 B
Iron, total m /I 0 9.5 2 3.38
Lead, dissolved m /I
Magnesium, dissolved m /I
Manganese, dissolved m /I
Manganese, total m /I o 0.3 0.1
Mercury, dissolved m /I
Molybdenum, dissolved m /I
Nitrate/Nitrite as N m /I
Nitrogen, ammonia m /I
H lab SU 8.8 H
Phosphate m /I
Phosphorus Ortho , dissolved m /I
Potassium, dissolved m /I
Selenium, dissolved m /I
Selenium, total m /I
Sodium Absorption Ratio SAR calc.
Sodium, dissolved m /I
Sulfate m /I
TDS Ratio calc.
TDS Calc. m /I
TDS m /l 3208 3924 3559 480
TSS m /I 22
Zinc, dissolved mg/I
'Baseline and WY 2000 data adapted from WWE (2001).
2 ACZ Laboratory, Steamboat Springs, CO
3 Negative values denote readings below lab detection levels.
4 ACZ Lab Qualifiers: U - Analyte was analyzed for but not detected at the indicated MDL.
H - Holding time exceeded; pH is a field test with an immediate hold time.
B - Analyte conc detected at a value bet method detection limit (MDL) and practical quantitation limit (PQL).
5 At some point before 5/8/2009 the well casing was knocked over and runoff and precipitation water from the drainage ditch alongside the road flowed
freel into the well, compromising both the water level and water quality in the well. The casing was returned to a standing position.
West Elk Mine
G-23 2009 Annual Hydrology Report HydroGeo, Inc.