REP12201

• Permit No: M1977004
• IBM Index Class Name: Report
• Doc Date: 1/3/2003
• Doc Name: 2002 Geotechnical Report
• From: Homestake Mining Company
• To: DMG
• Media Type: D
• Archive: No

Depths to Water Measured in Piezometers on Waste Rock Dumps
Date of
Measuremalt Piezometer Elevations (feet amsl)
Indian Creek Waste Rock Dump Piezometers
Tie Cam Area Piezometer
ICI0630 IC10600 ICI0525 IC10440 IC10370 IC10360 IC10300 TC10375
1/15/02 10428.4 10372.6 10293.8 Destro ed 10190.1 10142.3 10106.8 10200.7
2/20/02 10428.3 10372.5 10293.7 10189.7 10141.5 10106.8 10200.7
3115/02 10428.1 10372.5 10293.5 10189.6 10141.1 10106.8 10200.7
4/22/02 10428.4 10372.9 10294.2 10190.1 10141.8 10107.0 10200.7
5/20/02 10428.4 10372.9 10294.1 10190.1 10146.2 10106.9 10201.4
6/18/02 10428.4 10372.9 10294.1 10190.1 10144.1 10106.7 10201.1
7/12/02 10428.4 10372.8 10294.0 10190.1 10141.5 10106.2 10201.0
8/14/02 10428.4 10372.8 10294.0 10189.9 10141.1 10106.0 10200.8
9/23/02 10428.4 10372.7 10294.0 10189.8 10140.7 10105.9 10200.6
10/17/02 10428.4 10372.7 10293.9 10189.6 10139.9 10105.7 10200.5
2002
Maximum
Differential
0.3
0.4
0.7
N/A
0.6
6.9
1.4
1.0
Notes:
• Piezometer IC10440 was destroyed during regreding efforts in September 1996. IC10525 covtts this area of the Indian
Creak Waste Rock Dump.
• Depths recorded in feet above mean sea level (amsq