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REP09032
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REP09032
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Last modified
8/24/2016 11:38:46 PM
Creation date
11/27/2007 12:01:55 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981038
IBM Index Class Name
Report
Doc Date
7/23/1993
Doc Name
1992 ANNUAL SUBSIDENCE REPORT
Permit Index Doc Type
SUBSIDENCE REPORT
Media Type
D
Archive
No
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exhibit significantly different subsidence effects. Panels Y and AA will <br />• entail mining urxier deeper than usual cover in their northernmost <br />development and subsidence effects are therefore anticipated to be less <br />evident at the surface. Panel C lies in an area of relatively low cover <br />(300 to 800 feet) and will be mined utilizing a partial extraction minuxJ <br />method intended to preclude the occurrence of subsidence. <br />Projected blil~sidence Monitoring 1993 <br />Per the conditions of technical revision 16, CnVCC is required to inform <br />the Division of selected sites proposed for surveying for the upcmning <br />year in the Annual Subsidence Report. For the 1993 Calendar year, OOVCC <br />proposes the following thirteen (13) sites for surveying (see Map No. 2-5 <br />appended to this report): !r, 3!; iG, and 9T drill hole locations Fiy <br />~, ~; and !9'; structure locations in the north x of Section 10 which <br />will be denoted subsidence monitoring points 94', 9lC; 9i/, arx~; and the <br />corner of Sections 9, 10, 15, and 16 designated point p~! COVOC proposes <br />to abandon extension of the wide spaced monitoring grid on 1300' x 2600' <br />foot centers in favor of utili2irq readily accessible sites. Zhe terrain <br />and vegetation cover in the west pod area combine to make establishment of <br />additional grid sites prohibitive. Alternative locations with established <br />access will provide sufficient data. <br />In addition, NVCC also proposes to survey the seven (7) Pitkin Mesa <br />Pipeline monitoring locations as required. <br />• <br /> <br />6 <br />
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