2016-07-28_REVISION - C1981008 ‎(2)‎

• Permit No: C1981008
• IBM Index Class Name: Revision
• Doc Date: 7/28/2016
• Doc Name: Application
• From: Tri-State Generation and Transmission Association, Inc
• To: DRMS
• Type & Sequence: SL19
• Email Name: BFB
• Email Name: DIH
• Media Type: D
• Archive: No

nmin = (t 2s 2) / (0.1.X )2
where: n = the number of actual samples collected (initial size = 30 or 45)
t = the value from the one -tailed t distribution for 90% confidence with n-1
degrees of freedom;
S 2 - the variance of the estimate as calculated from the initial samples;
z = the mean of the estimate as calculated from the initial samples.
If the initial samples do not provide a suitable estimate of the mean (i.e., the inequality is false), a
reverse null success evaluation which does not require adequacy would be employed (Rule 4.15.11
(2)(c)). Sample adequacy results are presented on Table 1.
Table
1 Sam le
Adequacy Table
in
Ground Cover Production
Phase III Bond
Release Block
Reference Phase III Bond
Areas Release Block
Reference
Areas
rl
O
N
Mean =
Variance =
n =
nmj„ =
35.4
30.0 60.1
21.1
79.1
73.6 270.2
57.3
30
30 30
45
10.87
14.06 12.9
21.8
Ground Cover Productbn
Phase III Bond
Release Block
Reference Phase III Bond
Areas Release Block
Reference
Areas
O
rl
O
N
Mean =
Variance =
n =
nmm =
38.7
27.9 47.8
23.1
58.0
20.3 248.1
83.6
30
30 30
30
6.7
4.5 18.7
27.0
2.5 Success Evaluation
Success evaluations involve a direct comparison and, where necessary, statistical testing of the
ground cover, production, and forage quality parameters. In the case of ground cover and production,
comparisons are made against reference area data of the same year.
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