Northwest Pipeline Corporation

First Revised Volume No. 1-A

Effective Date: 11/25/1990, Docket: GT91- 5-000, Status: Effective

Original Sheet No. 301 Original Sheet No. 301 : Effective

RATE SCHEDULE TI-1

Interruptible Transportation

1. AVAILABILITY

This transportation rate schedule is available on a first-come,

first served basis to any party (hereinafter called "Shipper") for the

transportation of natural gas by Northwest Pipeline Corporation

(hereinafter called "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 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 Transportation

Agreement for service under this Rate Schedule.

2. APPLICABILITY AND CHARACTER OF SERVICE

This Rate Schedule shall apply to gas transported by Transporter for

Shipper pursuant to the executed Transportation Agreement for service

under this Rate Schedule.

Transportation service under this Rate Schedule 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 Transportation Agreement;

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

system for the account of Shipper either directly or by

displacement; and

transportation (less any fuel use reimbursement furnished

in-kind in accordance with the terms of the executed

Transportation Agreement and Section 14.5 of the General

Transportation Terms and Conditions) by Transporter to Shipper

or for the account of Shipper at the Delivery Point(s)

specified in the executed Transportation Agreement.

Transportation service rendered under this Rate Schedule is

interruptible, and subject to curtailment or interruption at any time.