Spreadsheet: jeff_dasovich__14181__2nd QTR 2001 - Appdx A
Sheet: Summary

Appendix A
Balancing Entity Detail Report and Significant Contributor Calculations
 |  |  | Significant Contributor2
Balancing Entity ID # | Balancing Entity Type1 | Targeted during Customer Specific | 3-Day Volume + Percent Imbalance | 3-Day Volume Imbalance Only | 3-Day Percent Imbalance Only | OFO Day Supply & Imbalance Increase
Dth Threshold |  | --- |  |  | ----
Percent Threshold |  | --- |  | --- |  | ----
1117 | CTARGAS |  |  |  | 8
1126 | CTARGAS
1157 | CTARGAS
1780 | CTARGAS |  |  |  | 6
2280 | CTARGAS |  |  |  | 3
2584 | CTARGAS |  |  |  | 14
2771 | CTARGAS
2832 | CTARGAS |  |  |  | 3
2892 | CTARGAS |  | 1 | 1 | 9
3152 | CTARGAS |  | 2 | 2 | 12
6500 | CTARGAS | 4 | 2 | 22 | 2
12296 | CTARGAS |  |  |  | 9
16786 | CTARGAS |  |  |  | 15
17791 | CTARGAS |  |  |  | 6
1117 | NBAA | 1 | 8 | 11 | 8 | 1
1126 | NBAA | 3 | 2 | 2 | 2
1157 | NBAA | 2 | 12 | 20 | 12 | 1
1281 | NBAA | 1 | 4 | 4 | 5
1377 | NBAA | 2 | 2 | 8 | 2 | 1
1830 | NBAA | 1 | 13 | 14 | 13 | 1
1864 | NBAA | 2 | 4 | 13 | 4 | 1
1922 | NBAA | 1 | 6 | 7 | 6 | 1
2056 | NBAA |  | 12 | 12 | 12
2280 | NBAA |  | 7 | 7 | 8
2584 | NBAA | 1 | 8 | 15 | 8
2771 | NBAA | 3 | 19 | 19 | 19
2832 | NBAA |  |  |  | 4
2892 | NBAA |  |  |  | 1
3015 | NBAA | 1 | 13 | 13 | 13 | 2
3115 | NBAA | 1 | 13 | 13 | 13
3550 | NBAA |  | 1 | 1 | 4
4760 | NBAA | 2 | 10 | 19 | 10
6084 | NBAA |  |  |  | 3
6728 | NBAA |  | 2 | 2 | 3
12296 | NBAA |  | 2 | 2 | 16
15966 | NBAA | 3 | 10 | 16 | 10
16666 | NBAA |  |  |  | 9
30069 | NBAA |  | 2 | 2 | 5
59 | NGSA
62 | NGSA
71 | NGSA
82 | NGSA
100 | NGSA
112 | NGSA
113 | NGSA
117 | NGSA
127 | NGSA
128 | NGSA
129 | NGSA
132 | NGSA
133 | NGSA
145 | NGSA |  | 1 | 1 | 1
194 | NGSA
195 | NGSA
196 | NGSA
197 | NGSA
205 | NGSA
213 | NGSA | 0 |  | 0 | 0 | 0
254 | NGSA |  |  |  | 1
282 | NGSA
283 | NGSA
288 | NGSA
295 | NGSA
303 | NGSA
308 | NGSA |  |  |  | 13
376 | NGSA
399 | NGSA
442 | NGSA |  |  |  | 22
447 | NGSA
483 | NGSA |  |  |  | 10
512 | NGSA
535 | NGSA
536 | NGSA
543 | NGSA |  |  |  | 11
544 | NGSA
545 | NGSA
572 | NGSA |  |  |  | 6
598 | NGSA | 0 |  | 0 | 0 | 0
635 | NGSA |  |  |  | 8
650 | NGSA
654 | NGSA |  | 2 | 2 | 5
713 | NGSA
755 | NGSA |  |  |  | 1
779 | NGSA |  |  |  | 2
858 | NGSA |  |  |  | 1
877 | NGSA
886 | NGSA |  |  |  | 1
915 | NGSA
944 | NGSA |  |  |  | 3
949 | NGSA | 0 |  |  | 7
995 | NGSA | 0 |  |  | 13
1011 | NGSA | 0 |  |  | 7
1015 | NGSA | 0
5328 | NGSA | 0
5361 | NGSA | 0 | 7 | 7 | 11
5370 | NGSA | 0 |  | 0 | 0 | 0
5973 | NGSA | 0 |  | 0 | 0 | 0
6063 | NGSA | 0
6583 | NGSA | 0
7602 | NGSA | 0 | 6 | 12 | 7
7604 | NGSA | 0 | 10 | 10 | 10 | 2
7610 | NGSA | 0
8217 | NGSA | 0
8556 | NGSA | 0
8576 | NGSA | 0
8577 | NGSA | 0
8578 | NGSA | 0
8579 | NGSA | 0
8580 | NGSA | 0
8916 | NGSA | 0 |  | 0 | 0 | 0
10556 | NGSA | 0 |  | 0 | 0 | 0
13556 | NGSA | 0 |  | 0 | 0 | 0
18287 | NGSA | 0 |  | 0 | 0 | 0
18586 | NGSA | 0 |  | 0 | 0 | 0
19307 | NGSA | 0 |  | 0 | 0 | 0
26669 | NGSA | 0 |  | 0 | 0 | 0
26909 | NGSA | 0 |  | 0 | 0 | 0
28030 | NGSA | 0 |  | 0 | 0 | 0
30511 | NGSA | 0 |  | 0 | 0 | 0
30889 | NGSA | 0 |  | 0 | 0 | 0
32594 | NGSA | 0 |  | 0 | 0 | 0
33353 | NGSA | 0 |  | 0 | 0 | 0
34866 | NGSA | 0 |  | 0 | 0 | 0
35930 | NGSA | 0 |  | 0 | 0 | 0
40016 | NGSA | 0 |  | 0 | 0 | 0
40018 | NGSA | 0 |  | 0 | 0 | 0
42288 | NGSA | 0 |  | 0 | 0 | 0
42988 | NGSA | 0 | 5 | 0 | 0 | 0
43069 | NGSA | 0 |  | 0 | 0 | 0
43268 | NGSA | 0 |  | 0 | 0 | 0
Total |  | 28 | 186 | 257 | 417 | 10
1.   CTARGAS is a Core Procurement Group; NBAA is  group of noncore enduse customers; NGSA is an individual customer.
2.  "Significant Contributor" per the OFO Settlement is the "3-Day Volume +  Percent Imbalance" Column.  The other significant contributor measures are for additional information.
 | Assumptions:
 | Thresholds for Significant Contributor Calculations
 | Dth | 5000
 | Percent | 0.1
 | Threshold for OFO Day Increase
 | Dth | 5000