REP50676

• Permit No: C1981034
• IBM Index Class Name: Report
• Doc Date: 7/13/1989
• Doc Name: RED CANYON MINE SUBSIDENCE MONITORING REPORT 05-1989 PN C-81-034
• From: MLRD
• To: JEFF CLAPTON
• Permit Index Doc Type: SUBSIDENCE REPORT
• Media Type: D
• Archive: No

-~ ~ V
GRAND MESA COAL COMPANY
SUBSIDENCE MONITORING TABLE
SEPT 1986 MAY 1989 CHANGE RELATIVE
POINT ELEVATION ELEVATION IN ELEV CHANGE IN ELEV
Sta 3 6551.21 6551.L1 0.00 0.00
Sub K 6534.44 6534.34 0.10 0.10
K-2-1 6538.89 6538.80 0.09 -0.01
K-2-2 6539.26 6539.16 0.10 0.00
Sub O 6562.58 6562.54 0.04 0.04
0-8-1 6553.48 6553.47 0.01 -0.03
0-8-2 6553.33 6553.32 0.01 -0.03
Sub R 6479.27 6479.21 0.06 0.20
R-6-1 6496.48 6496.43 0.05 -0.01
R-6-2 6493.56 6493.50 0.06 0.00
Sub Q 6465.78 6465.92 -0.14 -0.14
Sub S 6574.96 6575.09 -0.13 0.01
5-7-1 6565.23 6565.36 -0.13 0.00
5-7-2 6566.64 N/A
ORIGINAL MAY 1989 CHANGE RELATIVE BACK
POINT ELEVATION ELEVATION IN ELEV C HANGE IN ELEV SITE
Sta 3 6551.21 6551.21 0.00 0.00
Sub K 6534.71 6534.34 -0.37 -0.37 Sta 3
K-2-1 6539.19 6538.80 -0.39 -0.02 Sub k
K-2-2 6539.57 6539.16 -0.41 -0.04 Sub K
Sub 0 6563.24 6562.54 -0.70 -0.70 Sta 3
0-8-1 6554.17 6553.47 -0.70 0.00 Sub 0
0-8-2 6554.03 6553.32 -0.71 -0.01 Sub 0
Sub R 6480.44 6479.21 -1.23 -0.33 Sub Q
R-6-1 6497.67 6496.43 -1.24 -0.01 Sub R
R-6-2 6494.76 6493.50 -1.26 -0.03 Sub R
Sub Q 6466.82 6465.92 -0.90 -0.90 Sta 3
Sub S 6576.06 6575.09 -0.97 -0.07 Sub Q
5-7-1 6566.35 6565.36 -0.99 -0.02 Sta S
5-7-2 6566.64 N/A