Southwest Gas Storage Company

First Revised Volume No. 1

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Effective Date: 12/15/1999, Docket: RP00- 58-000, Status: Effective

Original Sheet No. 29 Original Sheet No. 29 : Effective









The rates and charges for interruptible service under this Rate

Schedule ISS shall include the applicable storage rate components per

Dt as described in Sections 3.1, 3.2 and 3.3.


3.1 Storage Charges


For storage service rendered to Shipper under this Rate Schedule

ISS, Shipper shall pay Southwest each Month the Inventory Charge.

The monthly charge per Dt is determined by multiplying the Average

Storage Balance for the billing month by the Inventory Charge rate

as set forth on the effective Tariff Sheet No. 5 of this Tariff.


3.2 Authorized Overrun Charge


The Authorized Overrun Charge shall be equal to the applicable

Authorized Overrun Charge rate, as set forth on the effective

Tariff Sheet No. 5, multiplied by the Quantity of Gas withdrawn

from Southwest's facilities pursuant to Section 2.3(B).


3.3 Fuel Reimbursement


Shipper shall reimburse Southwest in kind for fuel usage pursuant

to the terms and conditions of the Storage Service Agreement and

as stated on the effective Tariff Sheet No. 5 for service



3.4 Range of Rates


Unless otherwise agreed upon by Shipper and Southwest, the rates

applicable to a Shipper for service hereunder shall be the

applicable Maximum Rate(s) as set forth on the effective Tariff

Sheet No. 5. In the event an amount less than the applicable

Maximum Rate(s) and not less than the applicable Minimum Rate(s)

is agreed upon, such amount shall be confirmed in writing by

Southwest, shall be applied prospectively and Southwest shall be

responsible for compliance with any reporting requirements

prescribed by the Commission.