Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 11/01/1997, Docket: RP97- 17-007, Status: Effective

First Revised Sheet No. 263E First Revised Sheet No. 263E : Superseded

Superseding: Original Sheet No. 263E






During the heating season, Northern will not reduce any nomination for firm

receipts at Carlton for any Sourcer or Other Carlton Entitlement Shipper

who has a verifiable market or use. Verification of such market or use may

be provided by fax or electronically as part of the nomination process or

otherwise in the daily routine.


When Northern requires an increase in firm receipts at Carlton, Northern will

notify the appropriate parties to flow no later than twenty-four (24) hours

before nominations on Northern are due. When Northern requires a decrease in

firm receipts at Carlton, Northern will notify the appropriate parties to

decrease flow at least 24 hours prior to the time nominations are due to



No Carlton Sourcer or Carlton Supplier/Shipper will be required to flow at

Carlton for the purpose of allowing Northern to avoid curtailment, as

defined in Northern's tariff, of TI service.


If, as a result of the operational flow requirements being invoked by

Northern at Carlton, those shipper(s) for whom flow modifications were

required, incur an imbalance penalty related solely to such flow change,

the imbalance penalty shall be waived.


If any Sourcer releases any portion of the Volume, the Carlton flow

obligation and all other obligations follow the Volume. In addition, the

primary receipt point may not be modified. A Carlton Supplier/Shipper may

not release its obligation.


In the event that any Sourcer or Carlton Supplier/Shipper fails to comply

with Northern's flow requirements to increase or reduce firm receipts at

Carlton, for any reasons other than force majeure on an upstream pipeline,

such shipper shall pay a penalty of twenty-five dollars ($25.00) for each

MMBtu that does not comply with Northern's flow requirements to increase or



All parameters described above for Other Carlton Entitlement, Sourcers or

Carlton Supplier/Shippers will be outside of Northern's normal scheduling

and curtailment parameters.