Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 12/31/9999, Docket: RP00-404-007, Status: Accepted

Original Sheet No. 142C Original Sheet No. 142C : Pending

RATE SCHEDULE PDD

Preferred Deferred Delivery Service

A transportation rate and fuel is charged both into and out of a Field Area

storage point. Except as provided below with regard to a transportation

point and its associated storage point, a transportation rate and fuel

is charged for delivery to the Ogden storage point. If redelivery from

Ogden is to a Market Area point, there is no additional transportation or

fuel charge. If the redelivery is to a Field Area point, the Field Area

mileage/MID transportation rate and fuel is charged. To the extent a

volume is transported between a pooling point and its associated storage

point, no transportation fee or fuel shall be assessed. With the exception

of Ogden, to the extent a volume is transported from a storage point to a

transportation point other than its own associated transportation point

then a transportation fee and fuel will be assessed.

When a Market Area Storage point is utilized, the Shipper must use the same

type of service (i.e., firm or interruptible) to transport to and from the

storage point, unless agreed to otherwise by Northern on a

non-discriminatory basis. However, in the event interruptible

transportation service was used injecting into the PDD account, capacity

release may be utilized, under the terms and conditions of Section 47,

Capacity Release, to transport quantities from the PDD account.

5. PDD POINTS OF SERVICE

Shipper shall specify any of the following designated Deferred Delivery

points as its injection and withdrawal point:

Ogden Powertex Transwestern Halley

Demarcation Westar Carson Linam Ranch

Permian Pinnacle Lea WTU/San Angelo

Mid-Continent WTU/Rio Pecos Golden Spread

Westar Hale Ventura

Oasis Waha CIG Dumas TW/NNG Gray

El Paso Plains Pleasant Valley Transok Arapaho

Arkla Redmoon Westar Reeves ANR Greensburg

Lonestar Sprayberry PEPL Mullinville Enogex Custer

Westar Seagraves

Valero Spraberry

El Paso Keystone

Pony Express (Tescott)

In addition to the points listed above, there is a deferred delivery point

associated with each Mileage Indicator District (MID) as set forth in Rate

Schedule MPS.

6. REQUESTS FOR SERVICE

Requests for service under this Rate Schedule shall be considered

acceptable only if Shipper has completed and returned a valid written

request in accordance with Section 27, "Information Required for a Valid

Request", of the GENERAL TERMS AND CONDITIONS of this Tariff. Such request

for service shall contain the information specified in Northern's service

request form, as such may be revised from time to time, and:

A. Either with the request for service or at the time of execution

of the PDD Service Agreement, such other information as required

to comply with regulatory reporting or filing requirements; and

B. Sufficient information to determine Shipper's creditworthiness in

accordance with Section 46 of the GENERAL TERMS AND CONDITIONS of

this Tariff.

Upon Northern's acceptance to provide the requested service, Northern shall

tender to Shipper for execution a PDD Form of Service Agreement in the form

as set forth in this Tariff.