Southwest Gas Storage Company

Original Volume No. 1

Effective Date: 04/01/1999, Docket: RP99-244-000, Status: Effective

Third Revised Sheet No. 114 Third Revised Sheet No. 114 : Superseded

Superseding: Second Revised Sheet No. 114

RATE SCHEDULE ISS (Continued)

INTERRUPTIBLE STORAGE SERVICE

(b) Service hereunder and Buyer's Storage Service Agreement

shall be governed by and interpreted in accordance with

the laws of the State of Texas, except for the conflict of

laws provisions thereof.

third parties.

6.13 Operation of Rate Schedule ISS in Conjunction with Marketing

Affiliates

(a) All terms and conditions contained herein shall be applied

in a uniform and nondiscriminatory manner without regard

to affiliation of any entity to Seller.

(b) Other than telephone equipment, a computer system, and a

Local Area Network, Seller does not share any facilities

or operating personnel with its marketing affiliate. The

computer equipment, including access to all computer data

bases, is password protected in order to maintain

segregation of utilization and confidential access to the

system.

6.14 Fuel Reimbursement Adjustment

The Fuel Reimbursement Percentages under Rate Schedules FSS and ISS

shall be adjusted downward to reflect reductions and may be adjusted

upward to reflect increases in fuel usage and lost and unaccounted

for Gas in accordance with this Section 6.14.

(a) Filing of Fuel Reimbursement Adjustment

(1) Effective Date of Adjustment

The effective date of each Fuel Reimbursement

Adjustment shall be November 1 and April 1.

(2) Filing Procedure

At least thirty 30 Days prior to the effective date

of adjustment, Seller shall file with the

Commission and post, as defined by Section 154.2(d)

of the Commission's Regulations, a schedule of

effective Fuel Reimbursement Quantities, as

determined in accordance with Section 6.14(b)

hereof, together with supporting documentation.