Northwest Pipeline Corporation

First Revised Volume No. 1-A

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Effective Date: 04/01/1993, Docket: RP93- 5-000, Status: Suspended

First Revised Sheet No. 313 First Revised Sheet No. 313 : Suspended

Superseding: Original Sheet No. 313

RATE SCHEDULE TF-1

Firm Transportation

(Continued)

3. MONTHLY RATE(S)

Each month, Shipper shall pay Transporter for service rendered under

this Rate Schedule, the sum of the amounts specified in Sections 3.1 and

3.2, as applicable. For the purpose of applying the rates on Sheet No.

201 of this Tariff, a TF-1 Small Customer is any electing Rate

Schedule TF-1 Shipper whose Contract Demand, specified in its Service

Agreement hereunder, is for 6,000 MMBtus per day or less. (A Shipper

qualified to elect either the TF-1 [Small Customer] or TF-1 [Large

Customer] service hereunder may change its election only in connection

with the filing of a general Section 4 rate case by Transporter.

Transporter shall provide such Shippers with an opportunity to make such

an election prior to filing such rate applications.) All other Rate

Schedule TF-1 Shippers are TF-1 Large Customers for the purpose of

applying the rates on Sheet No. 201 of this Tariff. Rate Schedule TF-1

transportation services for The Washington Water Power Company, WP

Natural, a division of The Washington Water Power Company, and Cascade

Natural Gas Corporation to delivery points located off the Pacific Gas

Transmission Company system will be subject to as-billed charges from PGT

in addition to Northwest's posted TF-1 rates.

3.1 Reservation Charge:

The product of Shipper's Transportation Contract Demand as

specified in the executed Transportation Agreement and a unit rate

per MMBtu of Contract Demand as set forth on Sheet No. 201 of this

First Revised Volume No. 1-A.

Shipper shall commence payment of the Reservation Charges on

the date of the Transportation Agreement for firm service under this

rate schedule.

3.2 Commodity Charge: The sum of (a) and (b) below:

(a) An amount obtained by multiplying (i) the quantity of MMBtu

delivered by Transporter to Shipper after transportation

during the month, after reduction for fuel provided in kind,

if applicable by (ii) an amount no less than the Minimum Firm

Transportation rate nor greater than the Maximum Firm

Transportation rate per MMBtu, each as set forth on Sheet No.

201 of this First Revised Volume No. 1-A. Unless specifically

adjusted pursuant to Section 3.4 herein, the Maximum Rate set

forth on Sheet No. 201 shall apply.

(b) An amount obtained by multiplying (i) the quantity of MMBtu

delivered by Transporter to Shipper after transportation

during the month, after reduction for fuel provided in kind,

if applicable times (ii) the sum of the applicable GRI

adjustment, the ACA and the SSP components in cents per