REP29558

• Permit No: C1996083
• IBM Index Class Name: Report
• Doc Date: 5/5/2004
• Doc Name: 2003 Annual Hydrology Report Part 2
• From: J.E. Stover & Associates
• To: DMG
• Annual Report Year: 2003
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Bowie Resources Limited Surface Water
Bowie No. 2 Mine
2003 Annual Hydrology Report D32-4
Terror Creek -Drainage System
Elevation - 7680
Summary Infonnadon

Initiated 10/3111997 10!31/1997 10131/1997 10131/1997
AMivated
Date 11/19/2003 9/15/2003 6/222003 5/21/2003
F~telG "'1' `~"'''
P,arameteis, ~ Baseline Operation
UNITS Min Ave Max Min Ave Max
Flow CFS 0.26 1.18 4.30 N/A 0.42 4.3 N/A
FieldComment
ph su 7.1 7.7 8.4 8.2 7.8 8 8.2
Conductivity umhos/cm 30 85 170 720 70 50 70
Temperature Celsius 1.4 11.0 19.0 1.4 13.8 13.6 13.6
`~.
P,arame e ~
UNITS
Bicarbonate mg/L 28.3 53.8 106.0 28.3 35.5 39.1 29
Chloride mg/L <MOL 1.6 3.0 <MDL <MDL <MDL 1
Conductivity umhos/cm 68.0 122.6 205.0 162 168 112.7 68
Hardness mglL 31.0 52.9 98.0 60.6 40.9 42.3 31
Nitrate-Nitrite mg/L <MDL 0.3 1.7 1.37 0.83 0.1 0.73
Oil 8 Grease mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL
pH su 6.6 7.1 7.6 7.4 7.13 7.42 6.7
Phosphate m /L <MDL 0.20 1.37 0.23 1.35 1.37 0.09
ResidueFilterable-TDS mg/L 70 106 200 200 134.5 142.5 70
ResidueNonFilterable-TS mg/L <MDL 36 450 14.5 450 14 12
SAR <MDL 0.25 0.51 0.366 0.34 0.21 0.23
Sulfate mg/L <MDL 8.4 54.8 6.79 54.8 46.7 10
Aluminum mglL 0.03 1.66 7.02 0.27 3.3 0.5 1.63
Arsenic m /L <MDL 0.0003 0.0012 <MDL <MDL 0.0011 <MDL
Cadmium mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL
Calcium (Total) mg/L <MDL 12.3 2a.9 ~ 10.27 9.23 10.3 7.6
Copper mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL
Iron (Total) m /L 0.110 7.478 5.420 0.175 3.478 0.355 1.25
Lead mglL <MDL 0.0025 0.0300 0.03 0.013 <MDL 0.0004
Ma nesium (Total) m IL 2.90 4.92 8.50 8.5 4.35 4.37 2.9
Man anese (Total) m /L 0.009 0.046 0.259 0.015 0.259 0.018 0.029
Mercury mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL
Molyebdenum mg/L <MDL <MDL <MDL <MDL 0.02 <MDL 0.02
Selenium mg/L <MDL <MDL <MDL <MDL <MDL <MDL <MDL
Sodium mg/L 2.5 4.9 11.1 6.55 5.1 3.07 2.9
Zinc mg/L <MDL 0.019 0.160 0.024 0.16 0.076 0.01
The area of concern for monitoring point D32-4 has not been a9ecfed by the mining operation. Therefore, all recorded
monitoring events are considered Baseline.
The D32-4 Monitoring Point is on upper Terror Creek. It is located at the Cottonwood Stomp ford. This point is used to obtain
conducfiviry, pH and temperature readings. The irregular stream channel found at this location does not provide an adequate
method of determining flow values. Flow values are taken hom the USGS discharge information for station #09132985.
• N/A =Not available
Baseline Information Collection initiated on 10/31/97 and not yet wnsideretl complete.
Point D32-4 has not been influenced by mining.
Figure No. 92