Rockies Express Pipeline LLC (Entrega)

Second Revised Volume No. 1

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

Original Sheet No. 90 Original Sheet No. 90

RATE SCHEDULE IBS (continued)

A. A confirmed Access Request for a Gas Day shall permit a Shipper

to receive balancing service hereunder related to the linked

transportation Agreement without further notice. Shipper shall

not, however, be obligated to use such balancing volumes, i.e.,

Access Requests do not establish changes to scheduled

transportation nominations and are used to define the level of

balancing service available to the Shipper that day to cover IBS

Balance volumes allocated under Section 6.2B. Further, this

service is subject to the curtailment provisions of the General

Terms and Conditions of this Tariff.

B. Transporter shall account separately for each Gas Day's imbalance

services under the IBS Agreement. Differences on any Gas Day

between nominations and physical gas flow at the specified

Delivery Point and associated with the linked FTS or ITS

Agreement shall be allocated to the IBS Agreement up to the

confirmed Access Request quantities. The resulting allocated

imbalance volume, which may be positive or negative, shall be

added to the IBS Agreement Cumulative Balance and the linked FTS

or ITS Agreement will not reflect an imbalance at the delivery

point for such quantities. Actual volumes allocated to the

linked transportation Agreement at the Delivery Point may be

pursuant to a predetermined allocation Agreement. Service

hereunder allows Shipper to have daily imbalances or variances

within the level of the confirmed Access Request. Any volume

allocated to Shipper at the Delivery Point on any Gas Day in

excess of 1) the confirmed Access Request quantity for park or

loan under this Section 6; 2) the MDQ of the IBS contract; and/or

3) the maximum allowable Cumulative Balance shall be subject to

additional overrun charges pursuant to Section 7 of this Rate

Schedule.

6.3 Transporter shall provide to Shipper on its Interactive Website the

best available information on the IBS Balances under an IBS Agreement

by 10:00 a.m. CCT for the next Gas Day. Transporter shall identify

both the IBS Balance for the Gas Day ("Daily Balance") and the

Cumulative Balance. The Daily Balance parked or loaned shall equal

Transporter's allocation under Section 6.2 to balance the linked

transportation agreement on that Gas Day. Shipper shall be obligated,

based upon Shipper's projected requirements and information provided

by Transporter, to nominate in the next Gas Day's timely nomination

cycle to payback and bring its Daily Balance and Cumulative Balance to

zero ("IBS Payback nomination"). Transporter may adjust the Daily and

Cumulative Balance information in future periods, and Shipper's future

payback obligations shall be adjusted accordingly, but Shipper should

nominate IBS Payback nominations based upon available information

provided by Transporter.