Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

Effective Date: 11/01/2009, Docket: RP09-1056-000, Status: Effective

First Revised Sheet No. 30 First Revised Sheet No. 30

Superseding: Original Sheet No. 30

RATE SCHEDULE TI-1

Interruptible Transportation

1. AVAILABILITY

This Rate Schedule is available on a first-come, first-served basis

to any party (hereinafter called "Shipper") for the transportation of

natural gas by Transporter through Transporter's mainline transmission

system under the following conditions:

(a) Transporter can render the service contemplated without need

for construction of any additional pipeline facilities, other than

such new taps, valves, measurement equipment, or other facilities,

such as laterals, required at the Receipt or Delivery Point(s) to

effect delivery and measurement of the gas; and

(b) Shipper and Transporter shall have executed a Service

Agreement for service under this Rate Schedule.

As used in this Rate Schedule, Transporter's mainline

transmission system does not include Designated Laterals.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 Applicability. This Rate Schedule shall apply to gas transported

by Transporter for Shipper pursuant to the executed Service Agreement

for service under this Rate Schedule.

2.2 Transportation Components. Transportation service under

this Rate Schedule, which does not include service on Designated

Laterals, shall consist of:

(a) The receipt by Transporter for the account of Shipper of

Shipper's gas at the Receipt Point(s) specified in the executed

Service Agreement;

(b) The transportation of such gas through Transporter's

pipeline system for the account of Shipper either directly or by

displacement; and