Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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Effective Date: 12/01/2009, Docket: RP10-85-000, Status: Effective

First Revised Sheet No. 309 First Revised Sheet No. 309

Superseding: Original Sheet No. 309

ADDENDUM TO SERVICE AGREEMENT (Continued)

(To Be Added to the Releasing Shipper's Base or Temporary Capacity Release

Service Agreement in the Event such Releasing Shipper Permanently Releases All

or a Portion of its Contract Demand)

Pursuant to Offer Number________, effective_________, [Original

Shipper] has permanently released all or a portion of the Contract

Demand underpinning this Agreement to [New Shipper]. Therefore,

this Agreement is [terminated] (or) [modified to reflect the terms

contained in such Offer, including the reduction of Contract

Demand by _____Dth/d]. [New Shipper's] Service Agreement number is

______.

(To Be Added to the Replacement Shipper's Temporary Capacity Release Service

Agreement in the Event that the Related Releasing Shipper Permanently Releases

All of its Contract Demand which is Encumbered by such Replacement Shipper's

Temporary Capacity Release Transaction)

Pursuant to Offer Number________, effective__________, [New

Shipper] replaces [Original Shipper] as the Releasing Shipper for

the Contract Demand underpinning this Agreement due to a permanent

capacity release transaction. Additionally, the original Service

Agreement number ______ has been replaced with new Service

Agreement number ______.