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

AR COAL COMPANY -
RATES OF MOVEMENT (FT/DAY): ANNUAL MOVEMENT:
EQUIVALENT ANNUAL RATE
DATE STATION HORI2. VERT. TOTAL HORI2.(FT/YR) VERT.(FT/YR) TOTAL (FT/YR)
------------------------------------------------------------------------------------------
Aug-85 UT2
Jul-86 UT2 0.001033 -0.001556 0.001868 0.377298 -0.568263 0.682112
NOV-86 UT2 0,000978 0.0001626 0.000992 0.357332 0.059350 0.362227
Jul-87 UT2 0.000868 -0.000247 0.000903 0.317094 -0.090496 0.329755
Oct-87 U12 0.001304 -O.DDO97B 0.001630 0.476OB7 -0.357065 0.595109
Jun-as U72 0.001000 -0.000778 0.001267 0.365196 -0.284221 0.462763
Nov-88 U72 0.000510 -0.000326 0.000636 0.186323 -0.119281 0.221233
MEAN: 0.000949 -0.000621 0.001212 0.346555 -0.226663 0.442200
COEFF.OF VARIATION: 24.9% -89.9% 35.7% 24.9% -89.9% 35.7%
Aug-85 U4
Jul-86 L14 0.001344 -0.002125 0.002515 0.490794 -0.775898 0.918094
Nov-B6 U4 0.001132 -0.000406 0.001203 0.413322 -0.148374 0.439147
Jul-87 U4 0.000614 0.0002066 0.000648 0.224220 0.075413 0.236562
Oct-87 U4 0.001108 -0.001847 0.002154 0.404596 -0.674457 0.786505
Jun-88 U4 0.000985 -0.000204 0.001006 0.359639 -0.074795 0.367334
Nov-88 U4 0.000351 -0.000849 0.000919 0.128470 -0.310131 0.3356B7
MEAN: 0.000923 -0.000871 0.001408 0.336840 -0.318040 0.513888
COEFF.OF VARIATION: 36.5% -97.7% 48.5% 36.5% -97.7% 48.5%
Aug-B5 U1
Jul-86 U1 0.001151 -0.002275 0.002550 0.420414 -0.830539 0.930883
Nov-86 U1 0.000699 0.0002439 0.000740 0.255272 0.089024 0.270350
Jul-87 U1 0.000380 -0.000082 0.000389 0.139055 -0.030165 0.142289
Oct-87 U1 0.001086 -0.000543 0.001215 0.396739 -0.198370 0.443568
Jun-88 U1 0.001143 -0.000327 0.001189 0.417247 -0.119672 0.434069
Nov-88 U1 0.000261 -0.000522 0.000584 0.095425 -0.190850 0.213376
MEAN: 0.000787 -0.000585 0.001112 0.287359 -0.213429 0.405756
CDEFF.OF VARIATION: 46.3% -137.3% 63.9% 46.3% -137.3% 63.9%
400582.010
Aug-85 U3
Jul-96 U3 0.000370 -0.002365 0.002394 0.135174 -0.863323 0.873842
Nov-86 U3 0.004384 0.0008130 0.004459 1.600515 0.296748 1.627792
Jul-87 U3 0.000413 -0.000454 0.000614 0.150826 -0.165909 0.224220
Oct-87 U3 0.000760 0 0.000760 0.277717 0.000000 0.277717
- Jun-88 U3 0.001118 -0.000163 0.001130 0.408302 -0.059836 0.412663
Nov-88 U3 0.001047 -0.000849 0.001349 0.382444 -0.310131 0.492387
MEAN: 0.001349 -0.000503 0.001785 0.492496 -0.183742 0.651437
COEFF.OF VARIATION: 102.8% -193.5% 74.3% 102.8% -193.5% 74.3%
Aug-85 U2
Jul-86 U2 0.001516 -0.002395 0.002834 0.553357 -0.874251 1.034659
Nov-86 U2 0.000474 0.0006504 0.000834 0.173032 0.237398 0.293766
Jul-87 U2 0.000522 -0.000330 0.000618 0.190782 -0.120661 0.225736
Oct-87 U2 0.000448 -0.001086 0.001175 0.163580 -0.396739 0.429139
Jun-88 u2 0.001027 -0.000327 0.001078 0.374B72 -0.119672 0.393510
Nov-88 U2 0.000591 -0.000849 0.001035 0.216027 -0.310131 0.377953
{
MEAN: 0.000763 -0.000723 0.001258 0.278608 -0.264009 0.459127
L