MIGC LLC

Second Revised Volume No. 1

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Effective Date: 06/13/2008, Docket: RP08-376-000, Status: Effective

Original Sheet No. 66 Original Sheet No. 66 TRANSPORTATION GENERAL TERMS AND CONDITIONS (Continued) 6. Monthly Imbalances - Monthly imbalances result when actualdeliveries by Shipper to MIGC at the aggregate of MIGC's receipt points undera Transportation Service Agreement, less applicable fuel and unaccounted forloss reimbursement volumes, vary in any billing month from the aggregate ofdeliveries at MIGC's delivery points under such agreement that month. (a) MIGC shall determine the monthly imbalance quantity attributableto each Transportation Service Agreement for each Shipper through the last dayof the billing month, with the cutoff for the closing of measurement beingfive (5) business days after the business month. Measurement data, which ismissing or late, shall be estimated by the measuring party, with subsequentlyobtained actual data to be treated as a prior period adjustment. Prior periodmeasurement adjustments shall be reported as a restated line item reflectingthe new total quantity by Day and by Month (Standards Board Standard 2.3.12).MIGC shall then net imbalance quantities arising under each TransportationService Agreement with each Shipper for such month against imbalance quantitiesarising under all other Transportation Service Agreements with such Shipper forsuch month, to determine one monthly imbalance quantity for each Shipper. (b) The cumulative imbalance quantity shall be calculated as thecumulative total of all previous and current monthly imbalance quantities whichhave not been cashed out, swapped or cured in any other manner as allowed inthis tariff. If the cumulative imbalance quantity for a Shipper exceeds five(5) percent of the total monthly quantities received or delivered, asapplicable, under all of Shipper's Transportation Service Agreements, MIGCshall notify Shipper of such imbalance by time-stamping and delivering toShipper's designated address on or before the ninth (9) business day after theend of the month in which the excess occurred an Imbalance Statement,indicating the level of the Shipper's cumulative imbalance for the precedingbilling month. Shipper shall have thirty (30) days from the date of theImbalance Statement to cure the cumulative imbalance either through additionaldeliveries to or receipts of gas from MIGC, or by the use of Imbalance Swaps. (i) "Imbalance Swaps" shall mean the reallocation of cumulativeimbalance quantities from one Shipper to another Shipper in order to reduce thecumulative imbalance quantities of both Shippers. (ii) Shippers shall negotiate the terms of any Imbalance Swapsamong themselves. The results of any successfully negotiated Imbalance Swapsmust be reported to MIGC, in writing (Imbalance Trade Confirmation), by all