El Paso Natural Gas Company

Second Revised Volume No. 1A

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

Second Revised Sheet No. 147 Second Revised Sheet No. 147

Superseding: First Revised Sheet No. 147

RATE SCHEDULE IHSW

Interruptible Hourly Swing Service

1. AVAILABILITY

This Rate Schedule is available to any Shipper for hourly

deliveries of Natural Gas on an interruptible basis by Transporter under

the following conditions:

1.1 Shipper has met the creditworthiness requirements of this Tariff.

1.2 Shipper and Transporter have executed a TSA for the IHSW service in

the form contained in this Tariff ("IHSW TSA").

1.3 Shipper has an Executed TSA(s) under Transporter's Rate Schedules

FT-1, FTH-V, FT-H, NNTD, NNTH and/or IT-1 for the transportation of

gas ("Transport TSA(s)").

1.4 IHSW service is available only at Delivery Points identified as

Premium Service Delivery Points on Transporter's EBB.

1.5 IHSW service is available to any party meeting the requirements of

this Rate Schedule including DP Operators.

1.6 A DP Operator shall have the flexibility to apply IHSW service to

hourly quantities under one of the pre-determined allocation methods

described in Section 10.5 of the GT&C.

(a) If a DP Operator utilizes IHSW service it may choose to

associate such service with the Operator Sweep method option

pursuant to Section 10.5. In this event, the Operator's OSA

shall be defined as a Transport TSA for purposes of this rate

schedule only.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 This Rate Schedule shall apply to all Natural Gas delivered by

Transporter for Shipper pursuant to the IHSW TSA.

2.2 Delivery service hereunder shall be interruptible, subject to the

provisions of the IHSW TSA and to the GT&C incorporated herein by

reference.

2.3 IHSW service is provided to accommodate hourly flow variations

above Hourly Scheduled Entitlements, based on total quantities

scheduled on Transport TSAs, at each Premium Service Delivery

Point.