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Supplemental Information
PGA Summaries: Iowa
| Navigator |
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Purchased Gas Adjustments During 2008 (per therm)
| MidAmerican Energy Company (West System) |
| Northern Natural Gas,
ANR and NGPL Pipelines: |
| Revision No. |
Effective Date |
SVF/MVF/SGS |
LVF |
| Gas Supply Charge |
Pipeline Transport Charge |
Demand |
Gas Supply Charge |
| 156th Rev.
Sh. No. W-4 |
1/07/08 |
.74543 |
.06873 |
.74994 |
.77003 |
| 157th Rev.
Sh. No. W-4 |
2/07/08 |
.85534 |
.06873 |
.74994 |
.82013 |
| 158th Rev.
Sh. No. W-4 |
3/07/08 |
1.00020 |
.06873 |
.74994 |
.90022 |
| 159th Rev.
Sh. No. W-4 |
4/07/08 |
1.01264 |
.06873 |
.74994 |
.91521 |
| 160th Rev.
Sh. No. W-4 |
5/07/08 |
1.11121 |
.06873 |
.74994 |
1.03148 |
| 161st Rev.
Sh. No. W-4 |
6/07/08 |
1.15304 |
.06873 |
.74994 |
1.07613 |
| 162nd Rev.
Sh. No. W-4 |
7/07/08 |
1.22625 |
.06873 |
.74994 |
1.21816 |
| 163rd Rev.
Sh. No. W-4 |
8/07/08 |
.77326 |
.06873 |
.74994 |
.82924 |
| 165th Rev.
Sh. No. W-4 |
9/07/08 |
.70783 |
.06873 |
.74994 |
.72395 |
| 166th Rev.
Sh. No. W-4 |
10/07/08 |
.50962 |
.06958 |
.74994 |
.52562 |
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| MidAmerican Energy Company (East System) |
| Northern Natural Gas,
ANR and NGPL Pipelines: |
| Revision No. |
Effective Date |
Rider No. 6 |
| Clause 1 |
| Rates 60, 70, 87 & 90 |
| 156th Rev.
Sh. No. E-20 |
1/07/08 |
.81416 |
| 157th Rev. Sh. No. E-20 |
2/07/08 |
.92407 |
| 158th Rev.
Sh. No. E-20 |
3/07/08 |
1.06893 |
| 159th Rev.
Sh. No. E-20 |
4/07/08 |
1.08137 |
| 160th Rev.
Sh. No. E-20 |
5/07/08 |
1.17994 |
| 161st Rev.
Sh. No. E-20 |
6/07/08 |
1.22177 |
| 162nd Rev.
Sh. No. E-20 |
7/07/08 |
1.29498 |
| 163rd Rev.
Sh. No. E-20 |
8/07/08 |
.84199 |
| 165th Rev.
Sh. No. E-20 |
9/07/08 |
.77656 |
| 166th Rev.
Sh. No. E-20 |
10/07/08 |
.57920 |
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©2008 MidAmerican Energy
Holdings Company. All rights reserved.
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