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REV103503
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REV103503
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Entry Properties
Last modified
8/25/2016 1:14:21 AM
Creation date
11/22/2007 1:07:24 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981071
IBM Index Class Name
Revision
Doc Date
11/14/1997
Doc Name
REQUEST FOR PHASE II & III BOND LIABILITY RELEASE NORTH & SOUTH BLOCKS MINE 3 PN C-84-062
From
COLO YAMPA COAL CO
To
DMG
Type & Sequence
SL6
Media Type
D
Archive
No
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• The following is a brief synopsis of the date: <br />North Block Rcfcrcncc Arca <br />1995 <br />Desirable Cover 56.66 14 r~ <br />(°~a) <br />Desirable Production 88.97 41.77 <br />(g/.25m) <br />1996 <br />Desimble Cover 48.38 43.52 ~ <br />(%) <br />Desirable Production 46.31 23.54 <br />(g/.25m) <br />South Block Reference Area <br />1996 <br />• Desirable Cover 49.95 42.36 <br />(%) <br />Desirable Production 43.66 30.39 <br />(g/.25m) <br />1997 <br />Desirable Cover 58.61 52.46 <br />(%) <br />Desirable Production 56.36 42.31 ~ <br />(g/.25m) <br />Cover sampling was conducted using the inclined 10-point frame method at 5 meter intervals along each <br />rardomly located 50 meter transect, for a total of 100 points per transect. Production was determined by <br />means of clipping (bY life form) a total of 5 oneyuarter meter square plots per transect randomly located <br />along each transect line. Production samples wets then oven dried at a temperature of 100 deerees <br />Celsius for a minimum of 48 hours prior to weighing to the nearest hundredth of a gram. <br />From the Seld data, mean and standard deviation were calculated. These two values, in conjunction with <br />t-table values and degree of desired accuracy, were used to determine sample adequacy. The t values were <br />obtained from a Student's t Table as was suggested by the Division per a meeting with the Operator on <br />April 1, 1994. Those values are listed on the appropriate tables. <br />Species composition values were derived utilizing the previously obtained cover data for the block. <br />Sampling was previously conducted by the Division and during this episode the Division approved CYCC <br />
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