1989-07-27_REPORT - C1981033

• Permit No: C1981033
• IBM Index Class Name: Report
• Doc Date: 7/27/1989
• Doc Name: MULTI-SEAM SUBSIDENCE STUDY
• From: GEOWEST COLORADO SPRINGS, INC
• Annual Report Year: 1989
• Permit Index Doc Type: SUBSIDENCE REPORT
• Media Type: D
• Archive: No

EAR COAL COMPANY - SUBSIDENCE MONITORING SYSTEM DATABASE
COORDINATES: INCREMENTAL CHANGES: CUMULATIVE CHANGES:
---------------------------
DATE STATION NORTHING FASTING ELEVATION NORTH EAST ELEV. NORTH EAST ELEV.
------------------------------------------------------------------------------------------------------------
Aug-85 U72 400582.35 1439723.95 7697.57 0 0 0 0 0 0
Jul-86 UT2 400582.01 1439723.89 7697.05 -0.34 -0.06 -0.52 -0.34 -0.06 -0.52
Nov-66 UT2 400582.02 1439723.77 7697.07 0.01 -0.12 0.02 -0.33 -0.18 -0.50
Jul-87 UT2 400582.11 1439723.96 7697.01 0.09 0.19 -0.06 -0.24 0.01 -0.56
Oct-87 UT2 400582.23 1439723.96 7696.92 0.12 0.00 -0.09 -0.12 0.01 -0.65
Jun-88 UT2 40D582.37 1439724.16 7696.73 0.14 0.20 -0.19 0.02 0.21 -0.84
Nov-88 UT2 400582.42 1439724.10 7696.68 0.05 -0.06 -0.05 0.07 0.15 -0.89
MEAN:
COEFF.OF VARIATION:
pug-85 U4 400428.00 1440494.69 7752.86 0.00 0.00 0.00 0.00 0.00 0.00
Jul-86 U4 400427.56 1440494.60 7752.15 -0.44 -0.09 -0.71 -0.44 -0.09 -0.71
Nov-86 U4 4OD427.51 1440494.47 7752.10 -0.05 -0.13 -0.05 -0.49 -0.22 -0.76
Jul-87 U4 400427.61 1440494.58 7752.15 0.10 0.11 0.05 -0.39 -0.11 -0.71
Oct-87 U4 40D427.71 11.40494.60 7751.98 0.10 0.02 -0.17 -0.29 -0.09 -0.68
Jun-88 U4 400427.78 1440494.83 7751.93 0.07 0.23 -0.05 -0.22 0.14 -0.93
Nov-88 U4 400427.83 1440494.85 7751.80 0.05 0.02 -0.13 -0.17 0.16 -1.06
MEAN:
COEFF.OF VARIATION:
Au9-85 U1 400463.00 1440850.18 7B30.16 0.00 0.00 0.00 0.00 0.00 0.00
Jul-86 U1 400462.62 1440850.24 7829.40 -0.38 0.06 -0.76 -0.38 0.06 -0.76
Nov-86 U1 40D462.57 1440850.17 7829.43 -0.05 -0.07 0.03 -0.43 -0.01 -0.73
Jul-87 U1 40D462.66 1440850.19 7829.41 0.09 0.02 -0.02 -0.34 0.01 -0.75
Oct-87 U1 400462.76 1440850.19 7829.36 0.10 0.00 -0.05 -0.24 0.01 -0.80
Jun-88 U1 400462.83 1440850.46 7829.28 0.07 0.27 -0.08 -0.17 0.28 -0.88
Nov-88 U1 400462.87 1440850.46 7829.20 0.04 0.00 -0.08 -0.13 0.28 -0.96
MEAN:
LOEFF.OF VARIATION:
Aug-85 U3 399660.91 1441734.54 7748.01 0.00 0.00 0.00 0.00 0.00 0.00
Jul-86 U3 399660.94 1441734.66 7747.22 0.03 0.12 -0.79 0.03 0.12 -0.79
Nov-86 U3 399660.41 1441734.56 7747.32 -0.53 -0.10 0.10 -0.50 0.02 -0.69
Jul-87 U3 399660.49 1441734.62 7747.21 0.08 0.06 -0.11 -0.42 0.08 -0.80
Oct-87 U3 399660.49 1441734.69 7747.21 0.00 0.07 0.00 -0.42 0.15 -0.80
Jun-88 U3 399660.62 1441734.93 7747.17 0.13 0.24 -0.04 -0.29 0.39 -0.84
Nov-88 U3 399660.78 1441734.94 7747.04 0.16 0.01 -0.13 -0.13 0.40 -0.97
MEAN:
�JEFF.OF VARIATION:
Aug-85 U2 400633.05 1441796.16 7548.06 0.00 0.00 0.00 0.00 0.00 0.00
Jul-86 U2 400632.55 1441796.24 7547.26 -0.50 0.08 -0.80 -0.50 0.08 -0.80
Nov-86 U2 400632.58 1441796.19 7547.34 0.03 -0.05 0.08 -0.47 0.03 -0.72
Jul-87 U2 400632.70 1441796.23 7547.26 0.12 0.04 -0.08 -0.35 0.07 -0.80
Oct-87 U2 400632.69 1441796.27 7547.16 -0.01 0.04 -0.10 -0.36 0.11 -0.90
Jun-88 U2 400632.81 1441796.49 7547.08 0.12 0.22 -0.08 -0.24 0.33 -0.98
Nov-88 U2 400632.90 1441796.48 7546.95 0.D9 -0.01 -0.13 -0.15 0.32 -1.11
MEAN:
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