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

Y
t . ,
• Comp
RE

Ground Cover % endium 5 - WP009
VEGETATION DATA
, . .•:.. ,
r. 2 4 7 9 10
, _
I 2003 2005 1008 2010 2011

., Perennial Grasses 5.9 24.8 42.9
Q..• • Perennial Forbs 0.1 0.2
1.5

L.
.
.. Shrubs .5 1.9
f )
r4
?
A &ennials
nnuals 48.8 42.8 20.9
,
y t?
' T Litter 6.8 20.0 27.2
,
i Standing Dead - -
Rock 2.3 0.6 0.3
,t
,n `?1(.•'i ?,. , ?. ? C Bare Ground 35.6 11.6 5.4
- (i
ll
++ A
y
Ground Cover
I
100%
80°b ?

REVE GETATIO_ N SPECIFICATIONS
1)
,`.P(IU
t Acres: '),4 w 60°.ro ?
Localro +'
' Flrst Growl Seawn: '002 C 2008 succP ,
i
n
41 Sa
C
it
Topography: • .......
• • er
o
-
n
r
Aspec t: N Avg. % Sin
Regrading Note s:
20na 1-
i
Topsoil: MO ro/Placement: r--
_
f Pl il -
aced Tops
DePth o o o'
Surface Prc aratf
Soil Augmentation A on:
ctivites
Mo. r,
Its ac. 100} 2005 2008 2010 2011
Wood Plant Densi Countable Shrubs
4
1
7 9 10

2005
1003
2008 2010 2011
Young & Mature per acre 178 81 219
Seeding Dominant Emergent Spe cies` Woody Plant Density
Meth od; (Most Current Year Only) 1400 - - -
Total t PLS / Ac re: it ..it
_._
Seeded Species
went a.L
C.w
r 1200
Mo./Yr. of Seed ! i 1000 ............. ............................. ...............................
Species Seeded: , PLS/nt. Tlncksp:ke W heatgrals 16.31 Success Ulterior, = 1000 plants / acre
800
Gracs •+ 5.06 Cie--Rid Wheat r us 10.87
0 so Western Whet grass 7.52 0 600

( u su Streambank Wheat rasa 7.07 - 400
smn. : wnwl 0.25
67 Bann Wild
n Wild a
Ru
i 5.58
3.72 ; 200
w..re .. wr.eat r 0. ss
a _ 0
mne.r wn.a . 0 33 S_rnu)th Brume 2_31 2003 2005 2008 2010 2011
s: xelr From. 0.25 Kentucky Bluegrass 141
1 0o Rubber Rabbitbrush 141 Current Annual Pr
; oduCti0 11 (Pounds
2 per Acre)
4
7
9 to
..n Drs Ali_a R. 1.12 r.•. nmp
ea rn, 2011
1
0...m w•wrr• 0.50 Yelp i,rn o 2003 2005 2008 0
20
.1,1111.1 wile , o so Perennial Grasses 1,790.4
b.,,d teal" 0.13 Perennial Forbs 45.7
r•,•mny oAl Volunteers Sub-shrubs
knnnxey elu 0.06 3a anew Brume 11.21 Annual Grasses 27'5 -
Forbc 1.61 Ch-t rasa 10 35 Annual Forbs 26'8
W--, Y.- 0.06 Siberian Wheatprass S.29 Total 1,890.3
r. MIkwlrh L.67 Pru Illy Lettuce 2.9U
Current Annual Production
-
---0 saiumroet 0.25 F.,ld Penn cress 2.08 2000
l.•w ,Flax o 3J Beardless 8luebunch W. 1.56
A:c•ia, q 1J Curt ru 1 Gumweed 1.19
LOO Gamncl Oak l 1? 1600
v?.:.,.: n.amon 0.1J
H-k Mir.. P,n t-
Shrubs O 25
2,44 • Taxa w/ 1% composition - tBxa
counting toward diversity standard
a 1200
5,rvrceb,n o u (3%<X<50%) are blue _
Y : ~
Frn 9.1 Sag, 006 . ?.
'.
Ph o.11 Remediation / Weed Control 8 800
Fn.,rw. -itb.,.h 1,00 Measures / Other Not es: 2008 Success
Criterion - 427 lb6/acre
W u:tnrai O.13 400 ............. .................. . ...............................
R.:l:lx•• Rabt1tbru.h 0.25 _
A::tM.nr.' 6•r, e: b: uen use

025 0
2003 2005 2008 2010 2011
R
E
MM
C
O ENDATIONS Diversity (Number of Species between 3% and 50 % Relative Cover)
C
_
_
_
_
_
FAILS Diver Slty antl WP Dor-ay r-'- ---? ?:+ Ill, le is L rt<!eds more fork. Success Criterio n = 3 r. "asses & 1 per. fort b oy
etween 3%and SB% RelaWe
II
nt
1 2 4 7 9 10
Noxious weeds are co nlro0,ti1 prese
.
-1
o sl
- ~ I 8 2010 2011
20
i?,.I? ins arc shr nkm
Manr,nv; hstorv nn rn -.. , ?r± - 2005
2003 0
_ P-'ri-I Grasses 0 5 7
Perennial Forbs 0 0 I
0
Rio Tinto Energy America/Colowyo Mine Page 21 Revegetation Monitoring - 2008