Washington Natural Gas Company

First Revised Volume No. 1

 Contents / Previous / Main Tariff Index

Effective Date: 12/15/1995, Docket: CP95-300-001, Status: Effective

First Revised Sheet No. 23 First Revised Sheet No. 23 : Effective

Superseding: Original Sheet No. 23

This

Appendix A

shall become

effective on

the date

designated by

the Federal

Energy

Regulatory

Commission

and on such

date will

supersede any

previously

effective

Appendix A

establishing

the

Characteristi

cs and

Capabilities

of the

Jackson

Prairie

Storage

Project.

Attest: THE

WASHINGTON

WATER POWER

COMPANY

By /s/ Gary G. Ely

Gary G. Ely

Vice

President

Attest: WASHINGTON NATURAL GAS COMPANY

In Its Individual Capacity and as Project

Operator

By /s/ James W. Gustafson

James W. Gustafson

Senior Vice

President

Attest: NORTHWEST PIPELINE CORPORATION

By /s/ Matt Gillis

Matt Gillis

Vice President of

Operations

Washington Natural Gas Company First Revised Sheet No.

21 FERC Gas Tariff Superseding

First Revised Volume No. 1 Original Sheet No. 21