Southwest Gas Storage Company

First Revised Volume No. 1

Effective Date: 04/01/2010, Docket: RP10-427-000, Status: Effective

Twenty-Ninth Revised Sheet No. 5 Twenty-Ninth Revised Sheet No. 5

Superseding: Twenty-Eighth Revised Sheet No. 5

CURRENTLY EFFECTIVE RATES

Each rate set forth on this tariff sheet is the currently effective rate pertaining to the

particular rate schedule to which it is referenced, but each such rate is separate and

independent and the change in any such rate shall not thereby effect a change in any other rate

schedule.

Maximum Minimum

Rate Per Dt Rate Per Dt

----------- -----------

(1) (2)

RATE SCHEDULE FSS

-----------------

Capacity Charge $ 0.3419 (1) $ -

Deliverability Charge 2.8496 (1) -

Injection Charge 0.0015 0.0015

Withdrawal Charge 0.0015 0.0015

Authorized Overrun Charge 0.1145 0.0030

ACA Unit Charge 0.0019 0.0019

Fuel Reimbursement

West Area Storage Facilities

Injection 1.72 % 1.72 %

Withdrawal 0.82 0.82

East Area Storage Facilities

Injection 2.89 2.89

Withdrawal 1.48 1.48

RATE SCHEDULE ISS