REP44816

• Permit No: C1981035
• IBM Index Class Name: Report
• Doc Date: 4/29/1988
• Doc Name: QUARTERLY SUBSIDENCE MONITORING MONITORING STATIONS
• Permit Index Doc Type: SUBSIDENCE REPORT
• Media Type: D
• Archive: No

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NI KING
E%PLOR~tION FRED M. JOHNSON. C.P.G.
ENGINEERING GEOLOGIST
P:O. BOX 2162
UURANGO. COLORADO 81302
July 5, 1988
TO: National King Coal
OFIICE !O! 36~~0118
RE6IO ENCE 3~~-l7l0
SUBJECT: Quarterly Sut'sider.ce Monitoring, Second Quarter 1988
1) The second quarterly visual inspection for subsidence, King
Coal Mine, La Plata County, Colorado was made on June 30, 1988.
2) No inspection was possible during the first quarter because
of snow cover.
3) Survey statior;s were monitored by Clifford Sch.~nid, L.S.
during this quarter.
4) No new e~~idence of subs~der,ce is apparent.
Tne surface area above both old and current workings was
inspected. Particular a`te.ntion was given co the most recent
areas of retreat. Tha surface wes inspected for evidence of
slur*,?, subsidence, shearing, cracks in bedrock, vegetation
damaoe and water infiltration. too evidence of rlew subsidence
is apparent.
The purpose of this inspection was to meet requirements
es:abiished by the Colorado Mined Land Reclamation Division
for quarterly monitcring_of the surface for subsidence.
~ F- 3 r?. Jo~jC.P.G.
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