2012-06-20_PERMIT FILE - C2010089 ‎(61)‎

• Permit No: C2010089
• IBM Index Class Name: PERMIT FILE
• Doc Date: 6/20/2012
• Doc Name: Energy MineTopsoil Segregation Study
• Section_Exhibit Name: Appendix 2.05.4‎(2)‎‎(d)‎-2
• Media Type: D
• Archive: No

2.76 to 3.30 (where 0Di equals
Differences no stand and d 10
equal a full stand).
ratings were not significantly different.
Cover
Total plant cover in 1981 was s � �� is rater
highest on the A horizon (Table 3) over
on the three treatments containing 8 horizon
material was equal. In 1985, over was again
greatest on the A horizon plots, but the means
between treatments were not significant.
TABLE 3.-- PERCENT TOTAL PLANT COYER BY YEAR
ANO SOIL HORIZON
A /B ___ -- B
YEAR A B /5 --__
7x b* 61.0 a 62.5 a 61.0 a
1985 86.7 a
1981 81.0 a 85.3 a 82.3
*Means within a row followed by the sauce letter
are not significantly different at the 0.05
level.
Cover of individual species (Table 4)
appeared to be only partially correlated to
sail horizon. Analysis of variance of individual
cover values by horizon revealed in 1981 no
significant differences in species cover across
horizons s
wheatgrass, smooth broee,
of crested
wheatgrass by soil horizon were found (Table
4). Intermediate wheatgrass, crested wheatgrass
and smooth brome cover was highest an g
which received segregated A horizon soil. As
of 1985, Bromus rnarginatus (Mountain brome)
had successfully invaded the study site. Mountain
brome is commonly found in the surrounding native
SPECIES
Agin
Agcr
Oa gl
Brin
Brbi
Brno
Mesa
Weeds
1985 1981
16.8
6.3
1.0
4.9
9.3
0
19.1
10.1
A
3.2
0.3
6.7
8.8
0
7
13.0
48
1.3
4.4
5.9
0
22.9
0.1
*In 1985 Brin and Brbi were not differentiated
8
Production
Since all life forms followed the same
pattern as for total biomass, the values for
individual life forms were combined in the
analysis of the data.
In 1979, the highest biomass was produced
on the plots receiving c horizon soil (Tle
5). In 1981, 1983 and 1985 greatest production
was associated with the A horizon plots. In
1985 horizon, had no significant influence on
total forage production.
TABLE 5.- -TOTAL FORAGE PRODUCTION BY YEAR AND
SOIL HORIZON (Kg /ha)
YEAR A
1979
1981
1983
1985
1985
1.3
0.5
3.5
4.0
-3s8
64.5
0
K -3 -5
1406 ac*
3043 bde
4343 a
5134 a
areas.
TABLE 4.-- PERCENT COYER OF DOMINANT SPECIES BY SAMPLING YEAR AND SOIL HORIZON
A/B
*Means within a row followed e y the sae e tt er
a not significantly
level.
Plant Community Diversity
Stand ratings in 1978 indicated the highest
diversity was associated with the 8 horizon,
while the lowest diversity l sso i
with the A/B horizon p a
statistical evaluation tindividual eatest co verall
in 1981 and 1985 suggested plots.
diversity was found on the A/B horizon p
In 1985, there were no significant the td if f e r ences
in species diversity among
1981
16.1
5.6
0.9
5.9
9.8
0
_ 9.9
15.6
940 a
1688 a
2986 b
4318 a
8 - � / AB
1985
5.0
0
4.5
5.3
4.3
C43
1666 be
2573 bce
2480 b
4840 a
1981
14.0
5.5
1.0
4.8
7.8
0
14.0
2.5
1506 be
2294 ac
2780 b
4552 a
AB
1E335
1.7
0
5.2
3.2
5.7
0
}