Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 11/01/1993, Docket: RS92- 8-004, Status: Effective

Original Sheet No. 481 Original Sheet No. 481 : Effective








Page 3 of 7




Each party will allocate the quantities which are to be


delivered and received at the [Interconnection/Receipt Point(s)]


among each party's respective shippers pursuant to the confirmed


nominations. Any differences between the actual physical flow


and the sum of the confirmed nominations is the "Imbalance", and


will be the responsibility of the parties to eliminate on a


continuous basis.


3. Adjustment to Operational Imbalance


On a daily basis, measured quantities shall be


estimated for use in determining the estimated Imbalance at


the [Interconnection/Receipt Point(s)]. The parties shall


agree on the daily level of adjustment to physical flow of


gas during each delivery month required to reasonably


control the estimated Imbalance.


The physical flow at the [Interconnection/Receipt


Point(s)] for each month will be determined and communicated


by the party which operates the measurement facilities to


the other party in writing as soon as possible, but in no


case later than the tenth (10th) workday of the month


following the month of delivery. Any Imbalance shall be


corrected in a manner agreed to within thirty (30) days of


the date the Imbalance is confirmed in writing by the


parties or within such longer period of time agreed upon by


the parties.