REP41255

• Permit No: C1996083
• IBM Index Class Name: REPORT
• Doc Date: 4/18/2007
• Doc Name: 2006 AHR Part 2
• From: J.E. Stover & Associates Inc
• To: DRMS
• Annual Report Year: 2006
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Bowie Resources, LLC Surtace Water
Bowie No. 2 Mine
2006 Annual Hydrology Report Steph-low
Stevens Draw -Drainage System
Elevation - 7000'
Initiated 9/27/1995 9/27/1995 9/27/1995 9/27/1995
Activated
Date 11/9/200fi 9/18/2006 6/13/2008 3/28/2006
Summary Information
Baseline Operation
UNITS Min Ave Max Min Ave Max
Flow GPM 0.00 0.35 1.58 0 0 0 0
FieldComment No Flow Damp No Flow Damp
h su 7.9 8.2 8.4
Conductivity umhos/un 1020 1139 1310
Temperature Celsius 3.8 10.8 17.2
UNITS
Bicarbonate m /L 452 495 554
Chloride mg/L 14 16 20
Conductivity umhos/cm 1020 1093 1180
Hardness mg/L 343 382 433
Nitrate-Nitrite mg/L 0.02 0.20 0.97
Oil and Grease m /L <MDL 1 4
H su 8.0 8.2 8.3
Phosphate mg/L <MDL <MDL <MDL
ResidueFilterable-TDS mg/L 660 718 780
ResidueNOnFilterable-TSS mg/L <MDL 21 58
SAR <MDL 2.28 3.22
Sulfate m /L 150 170 190
Aluminum mg/L 0.05 0.53 1.71
Arsenic mg/L <MDL 0.001 0.002
Cadmium mg/L <MDL <MDL <MDL
Calcium m /L 49.4 59.6 72.4
Co er m /L <MDL 0.002 0.010
Iron (Total) mglL 0.27 0.82 2.57
Lead mg/L <MDL <MDL <MDL
Magnesium mg/L 41.3 55.9 86.2
Man anese otap m /L 0.070 0.211 0.568
Mara m /L <MDL <MDL <MDL
Molyebdenum mg/L <MDL <MDL <MDL
Selenium m /L <MDL 0.0002 0.001
Sodium mg/L 99.8 120.0 152.0
Zinc mg/L <MDL 0.01 0.03
The area o/ concern for monitoring point Steph-low has not been affected by the mining operate"an. Therefor:, al/ recrorded
monitoring events are consideratl8aseline.
The monitoring point location for Lower Stevens Draw is bcated in Stevens Omw, just below Pond 1 and Spring 14. It is accessed by a
southern lock o/the Stevens Draw road.
Baseline Information Collection initialetl on 9/27!95 antl not yet wnsitleretl wmplete.
Poinl Steph-low has not been influencetl by mining.
Figure No. 124