Puget Sound Energy, Inc.

Original Volume No. 1

Effective Date: 11/01/1998, Docket: CP98-250-002, Status: Effective

Original Sheet No. 13 Original Sheet No. 13 : Effective

1.17 Firm Working Gas Capacity

"Firm Working Gas Capacity" of an Owner means an amount equal to

such Owner's Share of Project Firm Working Gas Capacity multiplied

by the Project Firm Working Gas Capacity, as set forth in Part 1

of Exhibit E as such part may be revised in accordance with this

Agreement.

1.18 Gas Inventory

"Gas Inventory" of an Owner means the cumulative Daily Activity of

such Owner, adjusted for gains and losses of natural gas pursuant

to Section 8.2, allocations of fuel use pursuant to Section 8.3

and In Field Transfers, excluding Northwest's transportation

deliveries to the Chehalis Farm Tap.

1.19 In Field Transfer

"In Field Transfer" means the transfer of Available Working Gas

Inventory in place between the accounts of two Owners, without any

associated injections or withdrawals.

1.20 Interruptible Injection Capability

"Interruptible Injection Capability" of an Owner means the right

of such Owner to deliver natural gas, on a daily nonfirm basis to

the Storage Project. The Project Interruptible Injection

Capability for a Day shall be allocated among the Owners, up to

their respective nominations of Interruptible Injection

Capability, as follows:

(1) First to Northwest for Northwest System Balancing;

(2) Then to all Owners, in proportion to their respective

Shares of Project Firm Injection Capability, except that any

allocation to Northwest under this (2) shall be decreased by the

amount allocated to Northwest pursuant to (1) above.