Natural Gas Pipeline Company Of America

Seventh Revised Volume No. 1

Effective Date: 07/01/2010, Docket: RP10-147-004, Status: Effective

First Revised Sheet No. 25 First Revised Sheet No. 25

Superseding: Original Sheet No. 25

CURRENTLY EFFECTIVE TRANSPORTATION FUEL RETENTION FACTORS 1/

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DELIVERY ZONE 2/

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RECEIPT ZONE 2/ Market Midcontinent Texok Louisiana South Texas Permian

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Iowa-Illinois 1.27% 0.60% 0.60% 0.60% 0.60% 0.60%

Amarillo 2.23% 0.60% 0.87% 1.09% 1.20% 0.60%

Gulf Coast Mainline 2.12% 0.60% 0.60% 1.06% 1.13% 0.60%

Midcontinent 3.16% 1.48% 1.68% 2.42% 2.49% 1.48%

Texok 2.66% 2.00% 1.12% 1.37% 1.64% 1.43%

Louisiana 2.28% 1.10% 0.73% 0.77% 0.76% 0.60%

South Texas 3.12% 1.98% 1.61% 1.58% 1.13% 1.41%

Permian 4.40% 1.89% 1.82% 2.56% 2.63% 1.33%

1/ Fuel Gas and Gas Lost and Unaccounted For (GLU) retention factors applicable to service provided

under Rate Schedules FTS, FFTS, FTS-G and ITS. The Fuel Retention Factors stated above include a GLU

factor of 0.60%. The Fuel Retention Factors apply unless Natural and Shipper mutually agree on

monetary reimbursement.

2/ See Footnote 2/ on Sheet No. 36 for definition of transportation zones.