Northwest Pipeline Corporation

First Revised Volume No. 1-A

Effective Date: 10/03/1991, Docket: RP91-166-006, Status: Effective

First Revised Sheet No. 319 First Revised Sheet No. 319 : Effective

Superseding: Original Sheet No. 319

RATE SCHEDULE TF-1

Firm Transportation

(Continued)

13. RESERVATION CHARGE ADJUSTMENTS

13.3 The adjustments provided in this Section 13 shall not apply if

Transporter's failure to deliver the peak day or annual volume

requested was due to Shipper's failure to deliver such gas to

Transporter or to Shipper's inability to accept delivery of such gas.

14. OVERRUN PROVISIONS

14.1 Authorized Demand-2 Overruns. During any Nomination Year

ending June 30, the total quantity of gas transported for Shipper by

Transporter under this Rate Schedule TF-1 in excess of Shipper's

Annual Demand-2 Nomination but less than Transportation Contract

Demand times 365, shall constitute authorized D-2 overrun volume.

14.2 Unauthorized Demand-2 Overruns. During any Nomination Year

ending June 30, the total quantity of gas transported for Shipper by

Transporter under this Rate Schedule TF-1 in excess of Shipper's

Transportation Contract Demand times 365 shall constitute

unauthorized D-2 overrun volume.

14.3 D-2 overrun penalty payments. The penalty payment for

authorized D-2 overrun volumes as defined in Section 14.1 above shall

be in addition to the commodity rate otherwise payable and shall be

equal to the 100% load factor rate under Transporter's Rate Schedule

TF-1 and shall be computed as the sum of (a) and (b) below:

(a) The Demand-1 rate divided by 30.4;

(b) The Demand-2 rate;

The rates to be utilized shall be the currently effective

tariff rates set forth on Sheet No. 201 of this First Revised Volume

No. 1-A tariff.

The penalty payment for unauthorized D-2 overun volumes as

defined in Section 14.2 above shall be in addition to rates otherwise

payable and shall be equal to $5 times such unauthorized D-2 overrun

volume.

14.4 Authorized Demand-2 Overrun Provisions for Certain Rate

Schedule TF-1 Customers. The authorized Demand-2 Overrun provisions

contained in this Section 14 shall apply to WP Natural Gas, Sierra

Pacific Power Company, Southwest Gas Corporation-Northern California

and Southwest Gas Corporation-Northern Nevada as provided in a joint

offer of settlement filed on November 6, 1991 and approved by the

Federal Energy Regulatory Commission in its December 26, 1991 order

in Docket Nos. RP91-166-003, et al.