Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

Effective Date: 01/31/2008, Docket: RP08-130-000, Status: Effective

Original Sheet No. 231-C Original Sheet No. 231-C : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

14. OPERATING CONDITIONS (Continued)

14.13 Balancing. Balancing of thermally equivalent volumes of gas

received and delivered shall be achieved as nearly as feasible on a

daily basis, with any cumulative imbalance accounted for as provided in

Section 15. Imbalance makeup shall be nominated and scheduled in

accordance with the nomination procedures of this Section or netted or

traded as provided in Section 15.

14.14 System Integrity. Nothing herein shall limit Transporter's right

to take actions or to require Receiving Parties or Shippers hereunder to

take actions of whatever nature may be required to correct any

situations which may threaten the operation or integrity of its system,

including maintenance of service to other customers. Among the actions

Transporter shall be entitled to take is the issuance of Operational

Flow Orders in accordance with Section 14.15 below.