REV10470

• Permit No: C1980003
• IBM Index Class Name: Revision
• Doc Date: 2/27/1998
• Doc Name: PH II/III BRA EXHIBIT 1
• From: VEGETATION STUDY FOR FINAL BOND RELEASE
• Type & Sequence: SL3
• Media Type: D
• Archive: No

• Table 4a. Statistical Evaluations for the Reclaimed and Reference Areas on the H-G
Mine Study Area, 1996.
Parameters
X S N Nmin
Reclamation
Vegetation Cover (%) 78.3 8.1 17 2
Ground Cover (%) 96.4 4.4 17 1
Production (g/m~) 161.1 49.4 20 17
Shrub Density (#/T) 10.9 19.9 100 554*
Armen Reference
Vegetation Cover (%) 79.2 4.4 10 1
Ground Cover (%) 96.0 3.5 10 1
Production (g/mz) 95.7 22.7 20 10
Chokecherry Reference
Vegetation Cover (%) 80.6 5.7 10 1
Ground Cover (%) 95.6 3.4 10 1
Production (g/mZ) 107.3 23.0 20 9

Oak brush Reference
Vegetation Cover (%) 75.0 4.9 10 1
Ground Cover (%) 94.2 2.4 10 1
Production (g/mZ) 108.5 26.7 21 11
Saeebrush Reference
Vegetation Cover (%) 69.2 8.5 10 3
Ground Cover (%) 93.6 4.5 10 1
Production (g/mZ) 63.7 12.2 10 1
X = Mean
S = Sample Standazd Deviation
N = Number of Samples Collected
Nmin = Number of Samples needed to meet sample adequacy
= Percent
#/T = Number per Transect
* = NGnimum number calculated with "standard" t-test method
CJ
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