2011-01-19_REVISION - C1981019 ‎(6)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 1/19/2011
• Doc Name: Updated 2011 2008 Phase III Bond Release Evaulation - Year 2
• From: Colowyo Coal Company
• To: DRMS
• Type & Sequence: SL5
• Email Name: JRS
• Email Name: SB1
• Media Type: D
• Archive: No

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Table 3 Colowyo - Vegetation Production - 2008
Summary of Areas Sampled
Pounds (lbs) per Acre

Perennial Perennial Sub- Annual Annual Noxious TOTAL
Area Weight Grasses Forbs shrubs Grasses Forbs Weeds Ibs / ac Perennial Ibs / ac
Phase III 100% 1,649.8 153.6 - 1.7 5.1 - 1,811.2 1,803.4
c Mountain Shrub SS% 664.1 20.0 32.89 8.7 726
2 684
1
C . .
ry A
y 2 Sagebrush 45% 437.9 33.4 54.2 62.2 12.3 600.3 525
5
„a .
Weighted Average 562.3 26.0 24.4 46.1 10.29 - 669.6 612.7
Phase III 100% 1,690.6 245.6 - 28.4 1.2 0.9 1,966.8 1,936.2
Mountain Shrub SS% 505.1 64.3 11.24 2.7 1.2 584.6 569
4
e .
A
Sagebrush 45% 257.1 54.8 46.9 240.2 9.3 - 608.2 358
8
„a .
Weighted Average 393.5 60.0 21.1 114.3 5.65 0.69 595.2 474.6
Chart 4
Summary of Current Annual Production by Unit and Lifeform - 2008
2,000
¦Noxious Weeds ©Annual Forbs
1,600 ?Annual Grasses ®Sub-shrubs
?Perennial Forbs ¦Perennial Gressel
y 1,200
Q 2007 Success Standard - 90% of Ref.
y Areas Perennial Average
c 800 2008 Success Standard 90% of Ref.
Areas Perennial Average
a 400
0
Phase III Standard Mountain Shrub Sagebrush Phase III Standard Mountain Shrub Sagebrush
Reference Areas Reference Areas
2007 2008