REP16732

• Permit No: C1981019
• IBM Index Class Name: Report
• Doc Date: 3/28/2006
• Doc Name: 2005 ARR Section 9 Thru Section 11
• From: Colowyo Coal Company L.P.
• To: DMG
• Permit Index Doc Type: Annual Reclamation Report
• Media Type: D
• Archive: No

Table of Contents
1.0 Introduction ..............................................................................................................................1
2.0 Results &Discussion .................................................................................................................5
2.1 Overall Summary ..................................................................................................... ...............5
2,2 East Pit .................................................................................................................. ..............12
2.2.1 EP032 - 7`h Year -Cover, Diversity, Production, & Woody Plant Density ...... .............12
2.2.2 EP033 - 7`h Year -Cover, Diversity, Production, & Woody Plant Density ...... .............13
Z.2.3 EP038 - 4`~ Year -Cover, Diversity, & Woody Plant Density ........................ .............14
2.2.4 EP039 - 2nd Year -Cover, Diversity, & Woody Plant Density ........................ .............15
2.2.5 EP040 - 2"d Year -Cover, Diversity, & Woody Plant Density ........................ .............16
2.2.6 EP041 - 2"d Year -Cover, Diversity, & Woody Plant Density ........................ .............17
2.2.7 EP044 - 2"d Year -Cover, Diversity, & Woody Plant Density ........................ .............18
2.3 West Pit .................................................................................................................. .............19
2.3.1 WP006 - 7`h Year -Cover, Diversity, Production, & Woody Plant Density ..... .............19
2.3.2 WP009 - 4`" Year -Cover, Diversity, & Woody Plant Density ....................... .............20
2.3.3 WPO10 - 4`h Year -Cover, Diversity, & Woody Plant Density ....................... .............21
2.3.4 WPOll - 4"' Year -Cover, Diversity, & Woody Plant Density ....................... .............22
2.4 Section 16 ............................................................................................................... .............23
2.4.1 516014 - 7`" Year -Cover, Diversity, Production, & Woody Plant Density ..... .............23
2.4.2 516015 - 7`h Year -Cover, Diversity, Production, & Woody Plant Density ..... ............. 24
2.5 Summary by Area .................................................................................................... .............25
2.6.1 East Pit .................................................................................................... .............25
2.6.2 West Pit ................................................................................................... .............29
• 2.6.3 Section 16 ................................................................................................ .............32
2.6 Summary by Year .................................................................................................... .............35
2.7.1 1998 Revegetation .................................................................................... .............35
2.7.2 2001 Revegetation .................................................................................... .............39
2.7.3 2003 Revegetation .................................................................................... .............43
2.7 Reference Areas ...................................................................................................... .............47
2.8.1 Mountain Brush Reference Area ................................................................. .............47
2.8.2 Sagebrush Reference Area ........................................................................ .............47
2.8 Planted Seed Establishment ..................................................................................... .............53
2.9 CSU Shrub Plots ...................................................................................................... .............57
3.0 Conclusions &Recommendations ..........................................................................................71
4.0 Literature Cited .......................................................................................................................73
In-Text Tables, Charts, Figures, and Maps
Map 1 -Vegetation Sampling Unit Locations - 2005 ........................................................................3
Table P -Precipitation at the Colowyo Mine, 2001 - 2005 ................................................................4
Chart P -Precipitation by Growing Season at the Colowyo Mine, 2001 - 2005 ...................................4
Chart 1 -Ail Sampled Areas -Average Ground Cover by Lifeform - 2005 .........................................7
Chart 2 -All Sampled Areas -Relative Ground Cover (Composition) by Lifeform - 2005 ....................7
Chart 3 -Perennial Cover Success Criteria Comparison by Area - 2005 .............................................8
1~ Chart 4 -Perennial Cover Success Criteria Comparison by Year of Revegetation - 2005 .....................8