TRANSPORTATION GENERAL TERMS AND CONDITIONS
                             (Continued)
   
         6.  Monthly Imbalances -  Monthly imbalances result when actual
deliveries by Shipper to MIGC at the aggregate of MIGC's receipt points under
a Transportation Service Agreement, less applicable fuel and unaccounted for
loss reimbursement volumes, vary in any billing month from the aggregate of
deliveries at MIGC's delivery points under such agreement that month.
   
         (a) MIGC shall determine the monthly imbalance quantity attributable
to each Transportation Service Agreement for each Shipper through the last day
of the billing month, with the cutoff for the closing of measurement being
five (5) business days after the business month.  Measurement data, which is
missing or late, shall be estimated by the measuring party, with subsequently
obtained actual data to be treated as a prior period adjustment.  Prior period
measurement adjustments shall be reported as a restated line item reflecting
the new total quantity by Day and by Month (Standards Board Standard 2.3.12).
MIGC shall then net imbalance quantities arising under each Transportation
Service Agreement with each Shipper for such month against imbalance quantities
arising under all other Transportation Service Agreements with such Shipper for
such month, to determine one monthly imbalance quantity for each Shipper.
   
         (b) The cumulative imbalance quantity shall be calculated as the
cumulative total of all previous and current monthly imbalance quantities which
have not been cashed out, swapped or cured in any other manner as allowed in
this tariff.  If the cumulative imbalance quantity for a Shipper exceeds five
(5) percent of the total monthly quantities received or delivered, as
applicable, under all of Shipper's Transportation Service Agreements, MIGC
shall notify Shipper of such imbalance by time-stamping and delivering to
Shipper's designated address on or before the ninth (9) business day after the
end of the month in which the excess occurred an Imbalance Statement,
indicating the level of the Shipper's cumulative imbalance for the preceding
billing month.  Shipper shall have thirty (30) days from the date of the
Imbalance Statement to cure the cumulative imbalance either through additional
deliveries to or receipts of gas from MIGC, or by the use of Imbalance Swaps.
   
             (i)   "Imbalance Swaps" shall mean the reallocation of cumulative
imbalance quantities from one Shipper to another Shipper in order to reduce the
cumulative imbalance quantities of both Shippers.
   
             (ii)   Shippers shall negotiate the terms of any Imbalance Swaps
among themselves.  The results of any successfully negotiated Imbalance Swaps
must be reported to MIGC, in writing (Imbalance Trade Confirmation), by all