Northwest Pipeline Corporation

First Revised Volume No. 1-A

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Effective Date: 04/01/1993, Docket: RP93- 95-000, Status: Effective

Substitute First Revised Sheet No. 313 Substitute First Revised Sheet No. 313 : Effective

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. The charges set

forth in Sections 3.3 and 3.4 below shall only apply to The Washington

Water Power Company for Rate Schedule TF-1 deliveries to off-PGT points.

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 3.6 herein, the Maximum Rate set forth on Sheet

No. 201 shall apply.