2009-03-27_REPORT - C1981019 ‎(7)‎

• Permit No: C1981019
• IBM Index Class Name: REPORT
• Doc Date: 3/27/2009
• Doc Name: 2008 AHR & ARR Exhibit 9A
• From: Colowyo Coal Company
• To: DRMS
• Annual Report Year: 2008
• Permit Index Doc Type: Hydrology Report
• Email Name: JRS
• Media Type: D
• Archive: No

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Com pendium 7 - WP011
y 1.: R EVEGETATION DATA
.,.
Ground Cover io
4 1 9 20
rrn^•;,rt.+- 2003 2005 2008 2010 2011
r
Perennial Grasses
7.8 44.8
46.3
w Perennial Fortis 0.9 26 20.6

?
?r Shrubs - 0.2 -
, • ?' ' Annuals Biennials 46.5 16.6 4.3

'titt
14
5 _
26
8 2
er . .
6.5
Stand i+p Dead 3.2

r Rock 1.5 - 0.3

al' Bare Ground 25.6 9.0 2.1
/
. a
Ground Cover

so- t

REVEG
Unit:
ETATION
WP011
SPECIFICATIONS
Acres
:

. ..:
60°ro

Location:
-.t v,l G
5ea .on
Fnr rowr :
2110:
C

-----

20085uccrs
200
,
Topography: }I .......... .... 8 n-41.
.
0
.
Aspect: -0 Avg. 0 d,,b .
...
..
...................
Regrading Notes: - - - -
20°,
Topsoil: Mo Yr of Placement:
Depth of Placed Topsoil
0. __-
SurfacePrnration: 0
2003 .twS :lxNi 2010 2011

Soil Augmentation Acti
viteS /v
Mo.
• _ Wood Plant Den CouMaDle Shrutrs
7 9 10
?d
', ?! -- 2003 2005
2008
2010 2011
Young & Mature per acre 8 0 67
Dominant Emer gent Species• Woody Plant Density
Me (Most Current Year Onl y) 1400
Total I 1 Seeded Specks Pvraa K.I.
CO'r'r 1200
Mo./YSeeding 1 .....................................................................
.
Species Seede PiSac Ore, Mdkvetch 000 .....
SuCCe
s Criteri
n 1000
l
nt
u
•
7 S.06 Thlcksp± 8oO s
o
a
s / a
a
p
Smooth Bronle 600
St-nbank Whtsat rass d 400
.•-it Wheat rass 200
0

Ru„pan Wild, a 4.29
2003 2005 2008 201D 7011
O.??n
Wlldrye
w.,.. ?.„ 6r0ma . •.I.•r wheat rass 2 74 Current Annual Productio n Pounds per Acre
., a Y?..a I. , Fla. 1.55 ., ., ..... 2 4 7 9 10
.^ w?dr re n su 2003 2005 2008 2010 2011
oso Perenmal Grasses 2,577.0
U It Perennial Fortis 34.3
Sub-shrubs -
.v ni. o.06 Annual Grasses 21.8
Fortis )81 Annual Fortis 5.0
Volunteers Total 2,638.0
?? n?il..alrn Crested Wheat ss 5.41
Cheat rass 4 ; Current Annual Production
Fla. la anese Wome 119 3000
J
2500

Tana w/ 1% composition - tal<a 2000
Shrubs counting toward diversity standard
!, (3°+0<%<50°70) arc hi- a
0
,.,pr
- - o e6 150
p
C
0 11 Remediation / Weed Control
.. ,oltbuah 1 00 Measures / Other Notes: g 1000

w •. ,•
. 01]
ess
2008 SZ;
rr o."a„6Wt1ar W+ 0 7s
_
500 Criterion • crn
............................. ...............................
- adtalbr-h 0 SO
0

- 7003 2005 2008 2010 2011

_ RECOMM ENDATIONS Dive7rsit?y (Number of Species between 3% and SO% Relative Cover)
t'-pt f", WP D--ty wdl PASS BR t.•, tmg _ C,t,1, n 3 x•rrornbetwn 3'1n +nd S0% Reltive Cov
F 29 1
2003 2005 2008 2010 2011

orlw 0 1 1
Rio Tinto Energy America/Colowyo Mine Page 2S Revegetation Monitoring - 2008