Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 08/16/2010, Docket: RP10-975-001, Status: Effective

Substitute Ninth Revised Sheet No. 154 Substitute Ninth Revised Sheet No. 154

Superseding: Eighth Revised Sheet No. 154

RATE SCHEDULE MPS

MID Pooling Service

(f) While maintaining a balance of all volumes at a specific pooling point,

a Pooling Customer may transfer gas to another Pooling Customer at the

same pooling point through the nomination process without incurring a

transportation or fuel charge.

(g) A Pooling Customer can only sell gas at a pooling point to another

Pooling Customer or to a Northern transportation shipper.

(h) A Pooling Customer may enter into multiple MPS Agreements.

(i) Associated with each MID pooling area, with the exception of the

MID 17 pool and MID 17-192 pool, as listed below, is a MID storage

point available for service on an interruptible or firm basis in

accordance with Rate Schedule IDD, PDD or FDD, respectively.

(j) The pooling points and associated storage points are as follows:

Associated

Pooling Storage

Point Point

Pooling Area/MID POI POI

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

1 71302 71318

2 71303 71319

3 71304 71320

4 71305 71321

5 71306 71322

6 71307 71323

7 71308 71324

1-7 78930 78933

8 71309 71325

9 71310 71326

10 71311 71327

11 71312 71328

12 71313 71329

8-12 78931 78934

13 71314 71330

14 71315 71331

15 71316 71332

16A 71317 71333

13-16A 78932 78935

16A-1707* 71450 71451

16B 37654 62389

17*** 71458 N/A

17-192** 78623 N/A

(k) A pooling point may be scheduled as a primary or an alternate point for

firm throughput Shippers and is also available for interruptible

throughput Shippers. A MID pooling point will be considered a Primary

Receipt Point for purposes of scheduling at the MID pool to the extent

the Shipper holds unused primary receipt capacity at an allocated

point within the same MID. In the event of an allocation, Northern

will schedule the MID pooling point(s) based upon the priority of the

capacity the Shipper has contracted at the specific allocated receipt

point(s) upstream of the MID pooling point, in accordance with

Section 29 of the GENERAL TERMS AND CONDITIONS of this Tariff.

Aggregate MID pooling points must be on a separate contract from

individual MID pooling points.