Natural Gas Pipeline Company Of America

Seventh Revised Volume No. 1

Effective Date: 04/18/2008, Docket: RP08-319-000, Status: Effective

Original Sheet No. 133 Original Sheet No. 133 : Pending

RATE SCHEDULE IBS

INTERRUPTIBLE BALANCING SERVICE

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(2) Where an end-use facility is not directly

connected to Natural's system, a separate IBS Monitoring Agreement

must be agreed upon and executed among Natural, the Shipper, the

operator of the end-use facility and the point operator and must

provide (i) that the point operator will monitor the use of the

service to assure that service is being provided hereunder to the

end-use facility or facilities consistent with Rate Schedule IBS;

and (ii) that, during periods when deliveries to the end-use

facility are from more than one source, gas from Natural is deemed

the first gas delivered to and used by the end-use facility unless

another allocation is set out in the IBS Monitoring Agreement or is

otherwise agreed upon by the parties. Natural will provide to the

point operator relevant flow and nomination information related to

the IBS Agreement. Service hereunder for any end-use facility not

directly connected to Natural shall be contingent upon satisfaction

on a continuing basis of these requirements.

(d) TERM OF SERVICE

The request shall specify:

(1) The date service is requested to commence;

and

(2) The date service is requested to terminate.

(e) CREDIT

Acceptance of a request is contingent upon a

satisfactory credit appraisal by Natural in accordance with the

General Terms and Conditions of this Tariff.

(f) COMPLIANCE WITH IBS TARIFF

Submission of a request for service hereunder

shall be deemed agreement by Shipper that it will abide by the terms

and conditions of this Rate Schedule IBS, including the applicable

General Terms and Conditions.