El Paso Natural Gas Company

Second Revised Volume No. 1A

Effective Date: 04/01/2010, Docket: RP10-454-001, Status: Effective

Third Revised Sheet No. 147D.01 Third Revised Sheet No. 147D.01

Superseding: Second Revised Sheet No. 147D.01

RATE SCHEDULE ISS

Interruptible Storage Service

(Continued)

4. RATE (Continued)

4.3 In addition to the storage inventory rate provided in Section 4.2 of

this rate schedule, Shipper shall pay a commodity charge consisting

of the sum of the following components:

(a) Quantity Injection Charge. The Quantity Injection Charge

shall be the product of the Quantity Injection Rate multiplied

by the quantity scheduled for injection into storage for

Shipper's account each Month. Unless otherwise provided in

the ISS TSA, the Quantity Injection Rate shall be the maximum

rate(s) per dth set forth from time to time on the currently

effective Statement of Rates.

(b) Quantity Withdrawal Charge. The Quantity Withdrawal Charge

shall be the product of the Quantity Withdrawal Rate

multiplied by the quantity delivered from storage for

Shipper's account each Month. Unless otherwise provided in

the ISS TSA, the Quantity Withdrawal Rate shall be the maximum

rate(s) per dth set forth from time to time on the currently

effective Statement of Rates.

4.4 No surcharges are applicable to service under this Rate Schedule.

Surcharges, where applicable, will be assessed on the downstream

component of the transportation service associated with the

withdrawal of the gas from storage.

5. FUEL

In addition to the payments made pursuant to the other provisions

of this Rate Schedule, Shipper shall provide and be responsible for the

Fuel necessary to support the injection and storage of Natural Gas

pursuant to Shipper's ISS TSA. Fuel will be assessed on the injection

quantity. Unless otherwise agreed, the Fuel charge shall be set forth on

the applicable Statement of Rates and shall be subject to adjustment in

accordance with Section 13 of the GT&C.