Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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

First Revised Sheet No. 116 First Revised Sheet No. 116

Superseding: Original Sheet No. 116

RATE SCHEDULE DEX-1

Deferred Exchange of Storage Gas (Continued)

2. APPLICABILITY AND CHARACTER OF SERVICE (Continued)

(c) the date by which Shipper must transfer its storage gas to

Transporter;

(d) the Deferred Exchange Storage Facility;

(e) the Deferred Exchange Period; and

(f) the Daily Delivery Quantity.

Interested Shippers may submit bids for any quantity, up to the

lesser of Shipper's Working Gas Inventory in the Target Storage Facility

or the quantity posted. Unless Transporter has specified in its posting

that it is willing to accept Negotiated Rate bids, the rate bid cannot

exceed the Maximum Currently Effective Deferred Exchange Rate for

service under Rate Schedule DEX-1 as set forth on Sheet No. 6 of this

Tariff. If the aggregate quantity bid by all Shippers exceeds the

quantity posted, service will be awarded pursuant to the priority of

service provisions in Section 12 of the General Terms and Conditions.

If applicable, Negotiated Rate bids will be evaluated in accordance

with Section 19.3 of the General Terms and Conditions.

3. RATE

Shipper will pay Transporter a total amount equal to the product of

the Deferred Exchange Quantity and the rate per Dth that Shipper has

bid, plus applicable surcharges. Transporter will submit an invoice to

Shipper for the total amount owed on or before the tenth 10th day of the

month immediately following the month during which Shipper delivers the

Deferred Exchange Quantity to Transporter.

Gas that is transported on Transporter's system to the Target

Storage Facility and/or from the Deferred Exchange Storage Facility will

be subject to transportation and fuel charges under the applicable

transportation rate schedule. Likewise, gas that is stored on

Transporter's system prior to Shipper's delivery to Transporter and/or

after Transporter's delivery to Shipper will be subject to appropriate

charges under the applicable storage rate schedule.