2008-05-01_REPORT - C1996083 ‎(4)‎

• Permit No: C1996083
• IBM Index Class Name: REPORT
• Doc Date: 5/1/2008
• Doc Name: 2007 AHR Part 2
• From: J.E. Stover & Associates Inc
• To: DRMS
• Annual Report Year: 2007
• Permit Index Doc Type: Hydrology Report
• Email Name: MLT
• Media Type: D
• Archive: No

Bowie Resources, LLC Surface Water
Bowie No. 2 Mine
2007 Annual Hydrology Report D2-1
Sheep Corral -Drainage System
Elevation - 6360
Summary Information
Initiated 10/31/1997 10/31/1997 10/31/1997 10/31/1997
Activated 4/1/2002 4/1/2002 4/1/2002 4/1/2002
Date 11/2/2007 8/31/2007 6/22/2007 5/28/2007
Field
Parameters Baseline Operation
UNITS Min Ave Max Min Ave Max
Flow GPM 0.00 0.32 4.55 0.00 0.51 5.40 0 0 0 0
FieldComment Dry Dry Dry Dry
ph su 7.1 7.8 8.4 7.4 7.9 8.1
Conductivity umhos/cm 940 1210 1640 1140 1223 1300
Temperature Celsius 4.1 11.1 19.4 5.0 14.0 19.8
Lab
Parameters
UNITS
Bicarbonate mg/L 540 540 540 398.95 566.09 663.51
Chloride mg/L 11 11 11 <MDL <MDL <MDL
Conductivity umhoslcm 1230 1230 1230 1173.0 1235.2 1267.0
Hardness mg/L 291 291 291 314.00 348.94 372.55
Nitrate-Nitrite mg/L <MDL <MDL <MDL 1.368 1.866 2.730
Oil and Grease mg/L <MDL <MDL <MDL <MDL 0.069 0.069
pH su 8.2 8.2 8.2 7.8 8.0 8.1
Phosphate mg/L <MDL <MDL <MDL <MDL <MDL <MDL
ResidueFilterable-TDS mg/L 790 790 790 824.0 892.3 984.5
ResidueNonFilterable-TSS mg/L <MDL <MDL <MDL 1.0 6.2 11.5
SAR 5.3 5.3 5.3 1.34 2.34 3.20
Sulfate mglL 190 190 190 244.90 259.24 271.04
Aluminum mg/L 0.39 0.39 0.39 0.057 0.071 0.088
Arsenic mg/L <MDL <MDL <MDL 0.003 0.019 0.047
Cadmium mg/L <MDL <MDL <MDL <MDL 0.015 0.015
Calcium mg/L 49.8 49.8 ~ 49.8 54.7 61.6 66.6
Cop er mg/L <MDL <MDL <MDL <MDL <MDL <MDL
Iron (Total mg/L 0.3 0.3 0.3 0.10 0.12 0.14
Lead mglL <MDL <MDL <MDL <MDL 0.05 0.05
Magnesium mg/L 40.6 40.6 40.6 38.0 47.5 57.3
Manganese otal) mg/L 0.01 0.01 0.01 <MDL 0.022 0.022
Mercu mg/L <MDL <MDL <MDL <MDL 0.0001 0.0001
Molyebdenum mg/L <MDL <MDL <MDL <MDL <MDL <MDL
Selenium mg/L <MDL <MDL <MDL 0.0042 0.0404 0.1090
Sodium mg/L 205 205 205 54.8 101.6 139.8
Zinc mglL <MDL <MDL <MDL 0.017 0.018 0.020
The D2-1 Monitoring point is at the lower extreme of Sheep Corral Gulch. It is located just below the Hubbard Creek Road,
just north of the Blue Ribbon Mine.
Baseline Information for Point D2-1 is derived from events beginning on 10/31/97 through 4/1/02.
Point influenced by mining on 4/1/02.

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Figure No. 92