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2002-08-22_REVISION - M1988044
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2002-08-22_REVISION - M1988044
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Last modified
6/16/2021 5:41:17 PM
Creation date
11/21/2007 4:06:28 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1988044
IBM Index Class Name
Revision
Doc Date
8/22/2002
Doc Name
Partial Bond Release Request
From
Southwestern Ecological Services
To
DMG
Type & Sequence
SR2
Media Type
D
Archive
No
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The natural vegetation selected for comparison is located immediately east of the reclaimed land. This <br />vegetation rests on a gentle slope that faces the same direction as the bottom of the reclaimed land. <br />Four 1000 foot long transects were sampled, including one of the natural vegetation. In the reclaimed area, <br />one transect extended along the west facing slope, another along the east facing slope, and a third traversed the <br />bottom of the reclaimed land from the northeast corner to just north of the southwest comer. Using this pattern the <br />variations across the reclaimed floor could be determined and comparison of reclaimed floor to side slopes also <br />made. Each of these could then be compared to the natural vegetation as well as a comparison of all reclaimed <br />vegetation with the natural vegetation. <br />Table 1 shows the values found for the North Reclamation area. <br />Table 1 -North Reclamation Cover Adequacy <br />Location Mean Max. Min. Sample Sample Max. Min. Max. Min. <br /> Cover Cover Cover Variance Stndrd Range Range Deviation Deviafion <br /> <br /> <br />Natural <br />46.31 <br />90 <br />1 <br />459.5 <br />21.44 <br />67.74 <br />24.87 <~'h~lT~!'^in~SfY <br />~;,~;~~iyy~h: ;S<i: ib"23 a/'sC•q~ <br />Hs <br />r~3 <br />, <br />~ <br />. <br /> ~ <br />~ <br />, <br />,~ <br /> <br />Bottom 43.55 85 5 510.25 22.59 66.14 20.96 -24.20 18.68 <br />West 38.55 80 5 383.99 19.60 58.15 18.95 -29.20 13.68 <br />Facing <br />East 34.65 85 0 386.49 19.66 54.31 14.99 -33.10 9.78 <br />Facing <br />All 38.92 85 0 437.37 20.91 59.83 18.00 -28.83 14.04 <br />Reclaimed <br />If the maximum deviation of a unit is a negative value AND the minimum deviation of that unit is a <br />positive value then that population is within the standard deviation range of the control population, the natural <br />vegetation. Deviation pairs other than these indicate a population that differs with respect to cover from the control <br />population. Because the deviations meet the first test (negative maximum, positive minimum) for all the <br />revegetation units as well as all the revegetation units combined, then it is concluded that, with respect to cover, the <br />reclamation vegetation is statistically within the values expected for the natural vegetation. hl other words, the <br />reclamation revegetation is similar to the natural vegetation with respect to the extent of cover. Although other tests <br />can be performed on these data, this simple analysis provides an adequate comparison to say whether or not the <br />cover standard for reclamation has been achieved. <br />Reclamation Status -Coal Creek Resources M-1988-044 August 2002 Page 4 of 10 <br />
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