REP30304

• Permit No: C1981014
• IBM Index Class Name: Report
• Doc Date: 6/30/2001
• Doc Name: SEMI ANNUAL SUBSIDENCE MONITORING REPORT 1/2001 - 6/30/01
• Permit Index Doc Type: SUBSIDENCE REPORT
• Media Type: D
• Archive: No

TABLE 1
Southfield Mine
SEMI-ANNUAL SUBSIDENCE MONTTORING DATA SUMMARY
PERIOD: JANUARY I THROUGH JUNE 30, 2001
FLORENCE WATER LINE
Original Survey Dates: 05!65, 10/87, 01195, 05!96
Previous Survey Date: 04/01
La[est Survey Date: 06/01
Change from Original Survey (feet) Change from Previous Survey (feet)
Monument Latest Survey Vertical Horizontal Previous Survey Vertical Horizontal
No. Elevation Chan a Chan a Elevation Chan a Chan e
B 6,431.69 -0.31 0.75 6,432.00 -0.31 0.11
C 6,477.35 -0.78 1.26 6,477.65 -0.30 0.12
__
D 6,553.45 ___
-1.02 __
_
0.20 __
__
6,553.75 _
-0.30 __
0.15
E 6,631.34 -2.29 1.86 6,631.66 -0.32 0.16
F 6,296.55 -2.35 0.65 ___
__
6,296.85 -0.30 0.06
G 6,261.30 -3.25 0.74 6,261.50 -0.20 0.01
H 6,238.97 -1.31 0.35 6,239.02 -0.05 0.06
I 6,206.08 -3.23 0.63 6,206.11 -0.03 0.07
CV Joint 6,258.60 -2.99 _
_
0.20 _
_
6,258.93 -0.33 _
0.05
THOMPSON RANCH STRUCTURES
Original Survey Date: 05165
Previous Survey Dete: 04!01
Latest Survey Date: 06101
Change from Original Survey (feet) Change from Previous Survey (feet)
Latest Survey Vertical Horizontal Previous Survey Vertical Horizontal
Structure Elevation Chan a Chan a Elevation Chan a Chan e
N. House 6,367.03 -0.32 0.28 6,367.38 -0.35 0.21
S. House 6,371.69 -0.25 0.22 6,372.01 -0.32 0.12
Bam 6,383.12 -0.28 0.01 6,383.43 -0.31 0.13
NEWLW CREEK POINT
Original Survey Date: 05/65, 12196
Previous Survey Date: 04101
Latest Survey Date: 06/07
Change from Original Survey (feet)
Latest Survey Vertical Horizontal
Elevation Change Change
Change from Previous Survey (feet)
Previous Survey Vertical Horizontal
Point 6,221.67______-0.31 0.12 ~ 6,221.76 -0.09 0.08 ~