Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 06/01/2008, Docket: RP08-262-002, Status: Effective

Sixth Revised Sheet No. 309 Sixth Revised Sheet No. 309

Superseding: Fifth Revised Sheet No. 309

See actual tariff sheet referenced for entire provision.

Rate

Tariff Sheet Schedule/General

No(s). Terms & Conditions Provision

__________________ ___________________ _______________________________

151 SF Purchaser may elect to use Northern as

agent..to perform functions mutually

agreed to.

212 GTC Upon request, Northern will offer to

negotiate with a Delivery Point

Operator, on a not unduly discriminatory

basis, how Northern will manage the

quality of gas delivered to the Delivery

Point Operator...

226 GTC Unless Northern and Shipper mutually

agree to limit hourly takes to less than

6.3% for incremental entitlement,...

226 GTC In the Field Area, Northern and Shipper

may mutually agree to hourly takes of

4.16% of the new or extended entitlement

at the delivery point,...

264 GTC Contract flow orders...

275 GTC Unless otherwise mutually agreed to,

delivery of natural gas...shall be at

such varying pressures as may exist...

288 GTC Demand Credit. Unless Northern

and the Releasing Shipper have agreed to

a different credit...

297 GTC A Shipper may agree to waive its ROFR at

any time...

297 GTC The ROFR will not be applicable...