Southern Natural Gas Company

Seventh Revised Volume No. 1

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Effective Date: 01/09/2009, Docket: RP09-147-000, Status: Effective

Fifth Revised Sheet No. 126A Fifth Revised Sheet No. 126A

Superseding: Fourth Revised Sheet No. 126A

GENERAL TERMS AND CONDITIONS

(Continued)

Section 12.2(b) (continued)

(b) Intraday Nominations: Any SHIPPER may revise its nomination in effect by

submitting a revised daily nomination to COMPANY on the day the change is

requested to be effective. COMPANY will support two intraday nomination cycles.

In the first cycle, the intraday nomination shall leave the control of the

nominating party by 10:00 a.m. and COMPANY must receive such nomination no later

than 10:15 a.m. Central Clock Time. COMPANY will have until 10:30 a.m. to send

a quick response, until 1:00 p.m. to complete confirmation and until 2:00 p.m.

to provide scheduled quantities to affected shippers, point operators and bumped

parties. Subject to further provisions of this Section 12 regarding scheduling

and confirmation, SHIPPER's intraday nomination will be effective as of 5:00 p.m.

Central Clock Time on the same gas day. In the second intraday nomination cycle,

the intraday nomination shall leave the control of the nominating party by

5:00 p.m. and must be received by COMPANY by 5:15 p.m. COMPANY will have until

5:30 p.m. to send a quick response, until 8:00 p.m. to complete confirmations

and until 9:00 p.m. to provide scheduled quantities to affected SHIPPERS and

point operators. Scheduled Quantities resulting from the second intraday

nomination cycle shall become effective at 9:00 p.m. on the same gas day. No

bumping of flowing gas shall occur as a result of the second intraday nomination

cycle. SHIPPER may request increases or decreases in total flow, or changes to

receipt points or delivery points of scheduled gas. For intraday nominations

under this Section, there is no limitation as to the number of intraday

nominations which a service requester may submit at any one standard nomination

cycle or in total across all standard nomination cycles. The intraday nomination

cycles set forth above shall apply to nominations from TTT Service Providers.

(c) All provisions of this Section 12 shall apply to intraday nominations;

provided that Intraday nominations and Evening Cycle nominations shall span one

day only and will not rollover or replace the remainder of a standing nomination.

(d) No-Bump Rule for Interruptible Nominations: SHIPPER may not nominate

to increase its existing flowing quantities at any Receipt Point or

Delivery Point to an IT Service Agreement if such increase would cause

the reduction of existing quantities flowing at said points; provided,

however, that a scheduled temporary reduction in the quantities being

transported on behalf of SHIPPER, when requested by SHIPPER and approved

by COMPANY or when requested by COMPANY for maintenance or construction, shall not

serve to establish a reduced level of existing flowing quantities for the purposes

of this provision.

SHIPPER also may not nominate to increase its existing flowing quantities

at any Exhibit A-1 Receipt Point or Exhibit B-1 Delivery Point to a

Service Agreement under Rate Schedule FT or FT-NN if such increase would

cause the reduction of existing quantities at said points for other

firm shippers; provided, however, that a scheduled temporary reduction in

quantities being transported on behalf of SHIPPER, when requested by SHIPPER

and approved by COMPANY, shall not serve to establish a reduced level of

existing flowing quantities for the purposes of this provision.