2008-03-13_REPORT - C1981019 ‎(2)‎

• Permit No: C1981019
• IBM Index Class Name: REPORT
• Doc Date: 3/13/2008
• Doc Name: 2007 AHR 2007 Revegetation Monitoring Report
• From: Colowyo Coal Company
• To: DRMS
• Annual Report Year: 2007
• Permit Index Doc Type: Hydrology Report
• Email Name: SB1
• Media Type: D
• Archive: No

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Table 7 Colo o - Ve etation Cover - 2007
West Pit Revegetation -Relative Covelr Summary
Area -> WP008
Growing Seasons--> 7
Grasses and Grass-likes
N P Agropyron asystac yum is pi e W eatgrass 22.46
N P Agropyron riparium Streambank Wheatgrass 6.88
I P Agropyron sibericum Siberian Wheatgrass 15.02
N P Agropyron smithii Western Wheatgrass 1.39
N P Agropyron spicatum Bluebunch Wheatgrass 1.18
N P Agropyron irachycau/um Slender Wheatgrass 0.35
I P Bromus inennis Smooth Brome 8.48
I A Bromusjaponicus Japanese Brome 12.59
I A Bromus tectorum Cheatgrass 13.98
I P Dactylisg/omerata Orchardgrass 1.39
N P E/ymus cinereus Basin Wildrye 1.74
I P E/ymus junceus Russian Wildrye 5.08
N P Festuca ovina/saximontana Hard Fescue 0.35
I P Poa pratensis Kentucky Bluegrass 2.57
N P Poa secunda Sandberg Bluegrass 0.07
Forbs
I P aga us cic~r Cicer Mi etc 1.32
N B Grindelia squarrosa Curlycup Gumweed 0.14
N P Linum /ewisii Lewis Flax 1.67
M icago sativa a a 1
Shrubs, Cacti & Trees
N P Artemisia fi entata vas Mtn. Big Sage rus 0.35
N P Afriplexcanescens Four-wing Saltbush 2.78
Summary b Lifeform:
Perennial Grasses 66.97
Annual Grasses 26.56
Perennial Forbs 3.20
Annual & Biennial Forbs 0.14
Noxious /Aggressive Weeds -
Shrubs 3.13
Diversi Number of S ecies with between 3% - 50% Relative Cover c
Number of Perennial Grasses = 5
Number of Perennial Forbs = 0
Rio Tinto Energy America/Colowyo Mine Page 33 Revegetation Monitoring - 2007