Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 04/01/2010, Docket: RP10-354-000, Status: Pending

28 Revised Sheet No. 61 28 Revised Sheet No. 61

Superseding: 27 Revised Sheet No. 61

MILEAGE INDICATOR DISTRICTS FUEL PERCENTAGES

DELIVERY DISTRICT

------------------------

RECEIPT 1 2 3 4 5 6 7 7B 8

DISTRICT ----- ----- ----- ----- ----- ----- ----- ----- -----

1 ML Fuel 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.95% 1.83%

2 ML Fuel 0.00% 0.00% 0.79% 0.79% 0.00% 0.00% 0.79% 0.95% 1.83%

3 ML Fuel 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.95% 1.83%

4 ML Fuel 0.79% 0.79% 0.79% 0.79% 0.00% 0.79% 0.79% 0.95% 1.83%

5 ML Fuel 0.79% 0.79% 0.79% 0.79% 0.00% 0.79% 0.79% 0.95% 1.83%

6 ML Fuel 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.95% 1.83%

7 ML Fuel 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.95% 1.83%

7B ML Fuel 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.00% 0.88%

8 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

9 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

10 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

11 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

12 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

13 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

14 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

15 ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

16A ML Fuel 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.83% 1.04% 0.88%

16B ML Fuel 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.00% 0.88%

17 ML Fuel 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.79% 0.00% 0.88%

Note:ML Fuel percentages include the unaccounted-for percent as set forth on Sheet No. 54.

Northern will adjust its fuel percentages in accordance with Section 53

of the General Terms and Conditions of this Tariff.

In recognition of all to-and-through transactions where gas is nominated and

scheduled for delivery first to the Bushton inlet at POI 1708 in MID 16A and

then subsequently delivered to other delivery points on Northern's system, the

UAF percent will be zero on deliveries to the Bushton inlet (POI 1708); and the

fuel will be zero from the Bushton outlet (POI 1707) to MID 16B.