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. 130 Original Sheet No. 130 : Pending

RATE SCHEDULE IBS

INTERRUPTIBLE BALANCING SERVICE

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3. VALID REQUESTS

3.1 A request for service under this Rate Schedule IBS shall

be valid as of the date received if it complies with this Section and

contains adequate information on all of the items specified in Section

3.2, subject to any necessary verification of such information and to

the following:

(a) A request shall not be valid and Natural shall not

be required to grant any such request: (i) which would require the

construction, modification, expansion, or acquisition of any

facilities; provided, however, that Natural may agree in its

reasonable discretion to construct, modify, expand, or acquire

facilities to enable it to perform such services: (ii) unless and

until Shipper has provided Natural with the information required in

Section 3.2 hereof; (iii) if Natural determines, based on the credit

analysis referenced in Section 3.2(e) hereof, that Shipper lacks the

financial stability to make it reasonably likely the service provided

hereunder will be paid for on a timely basis; (iv) if the service

requested would not comply with this Rate Schedule IBS; or (v) if the

service requested is at less than the applicable maximum rate;

provided, however, that Natural may agree to provide service hereunder

at a discount consistent with this Rate Schedule IBS. Nothing herein

is intended to govern the scheduling and curtailment of service once a

request for service has been granted pursuant to this Section and

while an IBS Agreement is in effect. Such matters are governed by

Section 6(b) of this Rate Schedule IBS and the General Terms and

Conditions of this Tariff.

(b) In the event that Natural agrees to construct, modify,

expand or acquire facilities to perform service under this Rate Schedule

IBS, Natural shall maintain a separate record of the nature and costs of

such facilities.

satisfy an otherwise valid request because such request is incomplete or

does not comply with this Rate Schedule IBS. Any request shall be null

and void unless it is substantially complete and complies with this Rate

Schedule. In the event a request is substantially but not entirely

complete, Natural shall inform Shipper in writing of the specific items

needed to complete the IBS Agreement, after which Shipper shall have

fifteen (15) days to provide the specified information. In the event

such information is not received within fifteen (15) days, Shipper's

request shall be null and void.