2015-10-13_REVISION - C1981010

• Permit No: C1981010
• IBM Index Class Name: Revision
• Doc Date: 10/13/2015
• Doc Name: Bond Release Application
• From: Trapper Mining Inc
• To: DRMS
• Type & Sequence: SL17
• Email Name: TNL
• Email Name: DIH
• Media Type: D
• Archive: No

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Table 2.2-1. Reverse null T -Test on mean to demonstrate revegetation success for production and shrub density values.
Sample Parameters
Mean (Xbar)
Standard Deviation (S)
Standard Error (Sxbar)
[S/(n)v2]
Sample Size (n)
Q = 90% of standard
Table T Value = Tt
(alpha = .20; df = 29 or 31)
Calculated T Value = Te
Tc = Xbar - Q
Sxbar
D,F&Z Pits RSABB 01-05
Plant Production
Shrub Density
(grams per 1/4 m2)
(shrubs per 100 m2)
2014 2015
2014 2015
72.9 86.1
22.7 28.1
59.3 48.7
35.5 65.3
10.83 8.89
6.48 11.92
A,D&H Pits RSC 03-0
Plant Production
(grams per 1/4 m2)
2014 2015
81.0 83.3
52.3 48.0
9.25 8.49
30 t'
30 i'
30
30
32 ''
32 *'
14.04 *2
14.04 *2
8.89 *3
8.89 *3
10.67 *4
10.67 *4
0.84
0.84
0.84
0.84
0.84
0.84
5.44
8.10
2.13
1.61
7.61
8.56
Note: If Tc > than Tt, then the null hypothesis (Ho) is rejected and revegetation is deemed successful.
*' Three clip plots per transect, thus 90 or 96 total samples collected.
*2 Actual standard = 62.39 grams per m2. {62.39 / 4 (sampled plots = grams per 1/4 m2) * 0.9 (90% of standard) = 14.04.}
*3 Actual standard = 400 shrubs per acre. {4051.1 m2 in an acre = .0987 shrubs/m2 * 100 m2 transect = 9.87 * 0.9 (90% of standard) = 8.89.}
*4 Actual standard = 47.40 grams per m2. {47.40 / 4 (sampled plots = grams per 1/4 m) * 0.9 (90% of standard) = 10.67.}