REP03538

• Permit No: C1981019
• IBM Index Class Name: REPORT
• Doc Date: 4/6/2007
• Doc Name: 2006 AHR & ARR Section 7 Exhibit 7A to Section 9 Exhibit 9A
• From: Colowyo Coal Company L.P.
• To: DRMS
• Annual Report Year: 2006
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Table 1 -Vegetation Production -Summary of Areas Sampled - 2006 .....................
Chart 5 -Summary of Current Annual Production by Unit and Lifeform - 2006.........

Table 2 -Woody Plant Density -Summary of All Areas Sampled - 2006 ....................................... 10
Chart 6 -Woody Plant Density by Species and Area - 2006 ......................................................... 10
Chart 7 -Woody Plant Density by Species and Year of Revegetation - 2006 ................................. 10
Table 3 -Vegetation Cover -Diversity Summary - 2006 ............................................................. 11
Chart 8 -Number of Species with between 3% & 50% Relative Cover (by Area) - 2006 ................ 11
Chart 9 - Number of Species with between 3% & 50% Relative Cover (by Reveg. Year) - 2006....,. 11
Map 2 -Vegetation Sampling Point Locations - EP034 - 2006 ........................
Figure 1 -Pertinent Data Compendium - EP034 - 2006 ................................
Map 3 -Vegetation Sampling Point Locations - EP035 - 2006 .......................
Figure 2 -Pertinent Data Compendium - EP035 - 2006 .................................
Map 4 -Vegetation Sampling Point Locations - EP037 - 2006 ........................
Figure 3 -Pertinent Data Compendium - EP037 - 2006 .................................
Map 5 -Vegetation Sampling Point Locations - EP042 - 2006 ........................
Figure 4 -Pertinent Data Compendium - EP042 - 2006 .................................
Map 6 -Vegetation Sampling Point Locations - EP043 - 2006 ........................
Figure 5 -Pertinent Data Compendium - EP043 - 2006 .................................
Map 7 -Vegetation Sampling Point Locations - EP046 - 2006 ........................
Figure 6 -Pertinent Data Compendium - EP046 - 2006 .................................
Map 8 -Vegetation Sampling Point Locations - WP007 - 2006 .......................
Figure 7 -Pertinent Data Compendium - WP007 - 2006 ...............................
Map 9 -Vegetation Sampling Point Locations - 516016 - 2006 ......................
Figure 8 -Pertinent Data Compendium - 516016 - 2006 ...............................
Map 10 -Vegetation Sampling Point Locations - 516017 - 2006 ....................
Figure 9 -Pertinent Data Compendium - 516017 - 2006 ...............................
Map 11 -Vegetation Sampling Point Locations - FA002 - 2006 ......................
Figure 10 -Pertinent Data Compendium - FA002 - 2006 ...............................
Map 12 -Vegetation Sampling Point Locations - FA003 - 2006 ......................
Figure 11 -Pertinent Data Compendium - FA003 - 2006 ...............................
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Table 4 -Vegetation Cover -East Pit Revegetadon -Average Cover Summary - 2006 .................. 36
Table 5 -Vegetation Cover -East Pit Revegetation -Relative Cover Summary - 2006 ................... 37
Table 6 -Vegetation Cover -West Pit Revegetation -Average Cover Summary - 2006 ................. 39
Table 7 -Vegetation Cover -West Pit Revegetation -Relative Cover Summary - 2006 ................. 40
Table 8 -Vegetation Cover -Section 16 Revegetation -Average Cover Summary - 2006 .............. 42
Table 9 -Vegetation Cover -Section 16 Revegetation -Relative Cover Summary - 2006 .............. 43
Table 10 -Vegetation Cover -Fire Area Revegetation -Average Cover Summary - 2006 .............. 45
Table 11 -Vegetation Cover -Fire Area Revegetation -Relative Cover Summary - 2006 ............... 46
Chart 10 - 1999 Revegetation (7 Growing Seasons) -Average Cover by Lifeform - 2006 ............... 48
Chart 11 - 1999 Revegetation (7 Growing Seasons) -Relative Cover by Lifeform - 2006 ............... 48
Table 12 - 1999 Revegetation (7 Growing Seasons) -Average Cover Summary - 2006 .................. 49
Table 13 - 1999 Revegetation (7 Growing Seasons) -Relative Cover Summary - 2006 .................. 50
Chart 12 - 2002 Revegetation (4 Growing Seasons) -Average Cover by Lifeform - 2006 ............... 52
Chart 13 - 2002 Revegetation (4 Growing Seasons) -Relative Cover by Lifeform - 2006 ............... 52
Table 14 - 2002 Revegetation (4 Growing Seasons) -Average Cover Summary - 2006 .................. 53
Table 15 - 2002 Revegetation (4 Growing Seasons) -Relative Cover Summary - 2006 .................. 55