REV01171

• Permit No: C1981026
• IBM Index Class Name: Revision
• Doc Date: 8/4/1998
• Doc Name: REQUEST FOR PHASE III BOND RELEASE AT SLURCO CORP CANADIAN STRIP MINE
• Type & Sequence: SL5
• Media Type: D
• Archive: No

1
' Table A-7
Canadian Strip Mine
' 1998 Reclamation Success
Shrub Density Estimation
COMBINED DATA
' (All Phases) General Descriptive Stat/sOcs
_ Stem Density
Sample 6x5 M Quad Acre Mean 1413.28
1 8 1162 Standard Error 285.98
' 2 3 581 Median 968.00
3 5 968 Mode 387.20
4 2 367 Standard Deviation 1566.35
' 5
6 42
1 8131
194 Variance 2453451.94
Kurtosis 11.33
7 14 2710 Skewness 2.92
8 4 774 Range 8131.20
9 5 968 Minimum 0.00
' 10 18 3098 Maximum 6131.20
11 9 1742 Sum 42398.40
12 4 774 Count 30.00
13 2 387 Confidence Level(0. 560.50
1a s sfie
15 9 1742 Estimate Lower C/ per G116ert:
16 2 387 I = P(n+1) - ZI(nD(1-D)112
17 15 2904
18 6 1162 where p = 1
' 19 0 0 n = 30
20 4 774 Z = 1
21 1 194 then the Lower C! is defined by the
' 22
23 2
10 367
1936 f2 W ranked sample o/the data set
24 5 966 Interpolation to determine the 12th
25 3 581 ranked sample of the data set:
26 8 1549 The data presented by rank and percentile
27 73 2517 is ordered by rank from the lowest density
28 0 0 to highest density.
29 7 1355 Since the lower confidence limit (774) is
30 18 3098 greater than the success standard (500),
the median (968) is greater than the success
standard at the 90% confidence level.
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Data Set by Rank and Percentile
Sample Demity Rank Percent
19 0 1 0.00%
28 0 1 0.00%
6 194 3 8.90%
21 194 3 6.90%
13 387 5 13.79%
4 387 5 13.79%
22 387 5 13.79%
16 387 5 13.79%
2 581 9 27.59%
25 581 9 27.59%
6 774 11 34.48%
12 774 11 71.48%
20 77a 11 3x.46%
14 968 14 44.63%
24 968 14 44.83%
3 988 14 44.83%
9 968 14 44.83%
1 1162 18 58.62%
18 1162 18 58.62%
29 1355 20 65.52%
28 1549 21 68.97%
11 1742 22 72.41 %
15 1742 22 72.41 %
23 1936 24 79.31 %
27 2517 25 82.78%
7 2710 26 86.21 %
17 2904 27 89.66%
10 3098 28 93.10%
30 3098 28 93.10%
5 8131 30 100.00%
A-17