Rockies Express Pipeline LLC (Entrega)

Second Revised Volume No. 1

Effective Date: 04/05/2010, Docket: RP10-474-000, Status: Effective

Original Sheet No. 78 Original Sheet No. 78

RATE SCHEDULE IBS (continued)

2. APPLICABILITY, CHARACTER AND PRIORITY OF SERVICE

2.1 This Rate Schedule IBS shall apply to all interruptible balancing

services provided by Transporter for a Shipper at a specified

Delivery Point. A Shipper may nominate service hereunder pursuant to

daily balancing Access Requests under Section 6 of this Rate Schedule

IBS. This service will be provided based on line pack and/or

operational Gas capability and on offsetting Access Requests under

Section 6 of this Rate Schedule IBS. It is understood that

Transporter is not providing a supply or storage service under this

Rate Schedule IBS.

2.2 This service is designed to help a Shipper accommodate differences

between nominated and actual gas flows to a specified Delivery Point

under the FTS or ITS Agreement to which the IBS Agreement is linked

consistent with Section 3.2A of this Rate Schedule IBS.

2.3 Transporter shall not be required to provide service hereunder:

A. In excess of Shipper's confirmed daily Access Request under the

IBS Agreement and as determined under Section 6.1 hereof;

B. In excess of the maximum allowable cumulative IBS Balance (the

Cumulative Balance under an IBS Agreement may not exceed two

times Shipper's MDQ, absent agreement by Transporter) or in

excess of the MDQ of the IBS Agreement; or

C. If Transporter determines on a non-discriminatory basis that the

offering of requested balancing services to Shipper at a

designated Delivery Point would reduce its ability to satisfy

existing obligations to higher priority services or maintain the

integrity of its System.

2.4 Priorities of service for purposes of scheduling and curtailment

shall be governed by Section 3 of the General Terms and Conditions of

this Tariff.

2.5 The service provided under this Rate Schedule IBS shall be performed

in accordance with Part 284 of the Commission's Regulations. Shipper

shall only request service under this Rate Schedule IBS to the extent

such service would qualify under the applicable statutes,

regulations, Commission orders and the blanket certificate

authorizing service by Transporter under this Rate Schedule. For

service under Subpart B of Part 284 of the Commission's Regulations,

Shipper shall provide to Transporter appropriate certification,

including sufficient information in order for Transporter to verify

that the service qualifies under Subpart B of Part 284 of the