2010-05-17_REPORT - C1980006

• Permit No: C1980006
• IBM Index Class Name: REPORT
• Doc Date: 5/17/2010
• Doc Name: 2009 Revegetation Monitoring Report
• From: Kerr Coal Company
• To: DRMS
• Permit Index Doc Type: Reveg Monitoring Report
• Email Name: RDZ
• Media Type: D
• Archive: No

Table 2,
Marr Mine
Sample Adequacy Calculations

Site # Samples
Collected Mean Standard
Deviation Nm
90/10 Nm Using
Reverse
Null
Alkali Sagebrush Reference Area
Total Plant Cover (%) 15 32.13 4.37 3.4
Total Herbaceous Production (g/1/4m2) 30 2.78 0.88 17.2

1999 Reclamation
Total Plant Cover (%) 17 33.94 8.09 10.2
Total Herbaceous Production (g per 1/4m2) 30 30.81 20.03 72.7 30
Shrub Density (# per 100m) 30 75.57 88.13 103.9 30

Tipple Reference Area
Total Plant Cover (%} 15 26.60 6.75 11.6
Total Herbaceous Production (g per 1/4m) 30 4.64 1.56 194.8 30

Tipple Reclamation
Total Plant Cover (%) 20 32.85 9.68 15.3
Total Herbaceous Production (g per 1/4m2) 30 19.36 15.72 113.4 30
Shrub Density (# per 100m) F 30 196.03 58.54 6.8
18