Southern Natural Gas Company

Seventh Revised Volume No. 1

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Effective Date: 08/01/2009, Docket: RP09-670-001, Status: Effective

Sub. Twelfth Revised Sheet No. 212H Sub. Twelfth Revised Sheet No. 212H

Superseding: Twelfth Revised Sheet No. 212H

GENERAL TERMS AND CONDITIONS

(Continued)

40. NAESB STANDARDS

COMPANY hereby incorporates into this tariff by reference, rather than verbatim, the following NAESB

business standards and recommendations which have been adopted by the Commission in its regulations at 18

C.F.R. Section 284.10(b) and 284.12. Notwithstanding this Section 40, COMPANY shall adhere to the NAESB WGQ

Standards as modified by Order No. 717 and Order No. 587-T.

NAESB Standards - Version 1.8:

0.2.1, 0.2.2, 0.2.3, 0.3.1, 0.3.2, 0.3.11, 0.3.12, 0.3.13, 0.3.14, 0.3.15, 0.4.1

1.1.17, 1.1.18, 1.1.20, 1.1.21, 1.1.22, 1.2.3, 1.2.4, 1.2.8, 1.2.12, 1.2.13, 1.2.14, 1.2.15, 1.2.16, 1.2.17,

1.2.18, 1.2.19, 1.3.2(v), 1.3.2(vi), 1.3.4, 1.3.7, 1.3.14, 1.3.18, 1.3.19, 1.3.22, 1.3.27, 1.3.31, 1.3.33,

1.3.35, 1.3.36, 1.3.38, 1.3.39, 1.3.41, 1.3.42, 1.3.43, 1.3.44, 1.3.46, 1.3.47, 1.3.48, 1.3.49, 1.3.50,

1.3.51, 1.3.52, 1.3.53, 1.3.54, 1.3.55, 1.3.56, 1.3.57, 1.3.58, 1.3.59, 1.3.60, 1.3.61, 1.3.62, 1.3.63,

1.3.64, 1.3.65, 1.3.66, 1.3.67, 1.3.68, 1.3.69, 1.3.70, 1.3.71, 1.3.72, 1.3.73, 1.3.74, 1.3.75, 1.3.76,

1.3.77, 1.3.79, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7

2.1.5, 2.1.6, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.3.1, 2.3.2, 2.3.8, 2.3.10, 2.3.12, 2.3.13, 2.3.17, 2.3.18,

2.3.19, 2.3.21, 2.3.22, 2.3.23, 2.3.27, 2.3.31, 2.3.32, 2.3.33, 2.3.34, 2.3.35, 2.3.42, 2.3.43, 2.3.45,

2.3.46, 2.3.48, 2.3.51, 2.3.52, 2.3.53, 2.3.54, 2.3.55, 2.3.56, 2.3.57, 2.3.58, 2.3.59, 2.3.60, 2.3.61,

2.3.62, 2.3.64, 2.3.65, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9, 2.4.10, 2.4.11,

2.4.12, 2.4.13, 2.4.14, 2.4.15, 2.4.16, 2.4.17, 2.4.18

3.3.4, 3.3.6, 3.3.8, 3.3.9, 3.3.10, 3.3.11, 3.3.12, 3.3.13, 3.3.16, 3.3.20, 3.3.21, 3.3.22, 3.3.23, 3.3.24,

3.3.25, 3.3.26, 3.4.1, 3.4.2, 3.4.3, 3.4.4

4.1.16, 4.1.17, 4.1.18, 4.1.19, 4.1.20, 4.1.21, 4.1.22, 4.1.23, 4.1.24, 4.1.26, 4.1.27, 4.1.28, 4.1.29,

4.1.30, 4.1.31, 4.1.32, 4.1.33, 4.1.34, 4.1.35, 4.1.36, 4.1.37, 4.1.38, 4.1.39, 4.1.40, 4.2.1+, 4.2.2,

4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.8, 4.2.9, 4.2.10, 4.2.11, 4.2.12, 4.2.13, 4.2.14, 4.2.15, 4.2.16,

4.2.17, 4.2.18, 4.2.19, 4.2.20, 4.3.1, 4.3.2, 4.3.5, 4.3.16, 4.3.17, 4.3.18, 4.3.20, 4.3.22, 4.3.23, 4.3.24,

4.3.25, 4.3.26, 4.3.27, 4.3.28, 4.3.29, 4.3.30, 4.3.31, 4.3.32, 4.3.33, 4.3.34, 4.3.35, 4.3.36, 4.3.38,

4.3.39, 4.3.40, 4.3.41, 4.3.42, 4.3.43, 4.3.44, 4.3.45, 4.3.46, 4.3.47, 4.3.48, 4.3.49, 4.3.50, 4.3.51,

4.3.52, 4.3.53, 4.3.54, 4.3.55, 4.3.56, 4.3.57, 4.3.58, 4.3.59, 4.3.60, 4.3.61, 4.3.62, 4.3.65, 4.3.66,

4.3.67, 4.3.68, 4.3.69, 4.3.72, 4.3.73, 4.3.74, 4.3.75, 4.3.76, 4.3.78, 4.3.79, 4.3.80, 4.3.81, 4.3.82,

4.3.83, 4.3.84, 4.3.85, 4.3.86, 4.3.87, 4.3.89, 4.3.90, 4.3.91, 4.3.92, 4.3.93

5.2.2, 5.3.7, 5.3.12, 5.3.18, 5.3.21, 5.3.22, 5.3.23, 5.3.24, 5.3.25, 5.3.29, 5.3.31, 5.3.32, 5.3.33,

5.3.35, 5.3.36, 5.3.37, 5.3.38, 5.3.40, 5.3.41, 5.3.42, 5.3.43, 5.3.46, 5.4.1, 5.4.2, 5.4.3, 5.4.4, 5.4.5,

5.4.6, 5.4.7, 5.4.8, 5.4.9, 5.4.10, 5.4.11, 5.4.12, 5.4.13, 5.4.14, 5.4.15, 5.4.16, 5.4.17, 5.4.18, 5.4.19,

5.4.20, 5.4.21, 5.4.22, 5.4.23

10.2.1, 10.2.2, 10.2.3, 10.2.4, 10.2.5, 10.2.6, 10.2.7, 10.2.8, 10.2.9, 10.2.10, 10.2.11, 10.2.12, 10.2.13,

10.2.14, 10.2.15, 10.2.16, 10.2.17, 10.2.18, 10.2.19, 10.2.20, 10.2.21, 10.2.22, 10.2.23, 10.2.24, 10.2.25,

10.2.26, 10.2.27, 10.2.28, 10.2.29, 10.2.30, 10.2.31, 10.2.32, 10.2.33, 10.2.34, 10.2.35, 10.2.36, 10.2.37,

10.2.38, 10.3.1, 10.3.3, 10.3.4, 10.3.5, 10.3.6, 10.3.7, 10.3.8, 10.3.9, 10.3.10, 10.3.11, 10.3.12, 10.3.13,

10.3.14, 10.3.15, 10.3.16, 10.3.17, 10.3.18, 10.3.19, 10.3.20, 10.3.21, 10.3.22, 10.3.23, 10.3.24, 10.3.25

COMPANY agrees to use, and incorporates herein by reference, NAESB's Model Trading Partner Agreement for

transacting business with parties who choose to use the electronic delivery mechanism standards set forth in

Section 4 of the NAESB Standards.

COMPANY agrees to accept and provide standardized data elements for EDI pursuant to Version 1.8 of the NAESB

Standards which are incorporated herein by reference. A copy of COMPANY'S Implementation Guide for EDI

transactions is available upon request.

COMPANY agrees to use, and incorporates herein by reference, NAESB'S Funds Transfer Agent Agreement pursuant

to Version 1.8 to be used to supplement COMPANY's General Terms and Conditions in order to appoint an agent

for all transactions wherein there is a need for instantaneous transfer of title of gas from a seller to

buyer to buyer's repurchaser.

COMPANY agrees to use, and incorporates herein by reference, NAESB's Base Contract for Sale and Purchase of

Natural Gas as well as the Model Credit Support Addendum to the Base Contract pursuant to Version 1.8 in

order to facilitate purchase and sale transactions of gas on a firm or interruptible basis.