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REP13745
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REP13745
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Last modified
8/24/2016 11:43:55 PM
Creation date
11/27/2007 1:17:20 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982057
IBM Index Class Name
Report
Doc Date
3/29/2004
Doc Name
2003 Revegetation Monitoring Report
From
SCC
To
DMG
Permit Index Doc Type
Reveg Monitoring Report
Media Type
D
Archive
No
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a Seneca II-W extended reference area values from data collected in 2003 <br />° Seneca II-WS extended reference area values from data collected in 1997; it is likely that values from <br />2003 would have somewhat lower, so the calculated standard is probably somewhat high. <br />As can be seen, the observed herbaceous production in both the 1996 antl 1999 reclaimed areas <br />exceeded the production standard. The listed reclaimed area production figures are not <br />corrected as they would need to be in actual Phase III bond release testing for the presence of <br />annual/biennial species. The correction downward for "excess" annual/biennial species in the <br />1996 cover data (above) was about 12%. Since the measured production in the 1996 <br />reclamation area exceeded the standard by 78%, the annuallbiennial correction would still leave <br />the allowable production value well above the standard. Likewise, for the 1999 reclamation area, <br />the correction in the cover values for "excess" annual/biennial cover was 28%. Correcting the <br />total production downward by this amount would leave it at 1657 Ib/ac, well above the standard of <br />1421 Ib/ac. <br />Woody Plant Density <br />2003 data from the 1996 reclaimed area indicate the presence of about 733 woody plant stems <br />per acre. This number is only somewhat below the current standard of 900 stems per acre <br />(1,000 x 0.9). The 1996 reclaimed area was first sampled when it was 4 years old in 2000 <br />(ESCO 2001). At that time, woody plant density was 696 stems per acre, most of which was <br />snowberry and big sagebrush. The 2003 figure of 733 stems per acre is encouragingly stable. <br />Composition has shifted to a predominance of snowberry and serviceberry rather than snowberry <br />and sagebrush. <br />In the 1999 reclamation area, the 2003 woody plant density level of 753 stems per acre greatly <br />exceeds the 32 stems per acre density observed in 2001 (ESCO 2002). The bulk of 2003 shrubs <br />present were snowberry and big sagebrush that apparently germinated and established during <br />the very dry 2002 growing season. <br />Species Diversity and Composition <br />The 1996 reclaimed area is dominated by native perennial cool season grasses and introduced <br />perennial fortis (mostly titer milkvetch), comprising together almost 60 percent of total vegetation <br />cover (Figure 5). <br />The distribution of species density by lifeform (Figure 4) shows that the 1996 and 1999 reclaimed <br />areas are more similar to the reference areas than would appear to be the case from the lifeform <br />distribution of relative cover (Figure 5). This is important in that it shows that the basic <br />components of the original ecosystem have indeed been returned and that it is a matter of <br />relative proportions that separates the reclaimed from the native vegetation. Perhaps the largest <br />12 <br />
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