GENERAL TERMS AND CONDITIONS
                                  (Continued)
   
   
            verification of the accuracy of such equipment.  Transportation
            and related expenses involved in the testing of meters shall be
            borne by the party incurring such expenses.
   
            The Operator, for purposes of this section, shall be the owner
            of the equipment referenced herein, or the agent of such owner,
            or such other person as the parties may agree in writing.
   
            If, upon any test, Operators measuring equipment is found to
            be in error, such errors shall be taken into account in a
            practical manner in computing the deliveries.  If the resultant
            aggregate error in the computed receipts or deliveries is not
            more than 0.5% for chromatograph or calorimeter and two percent
            (2%) for other measuring equipment, then previous receipts or
            deliveries shall be considered accurate.  All equipment shall,
            in any case, be adjusted at the time of test to record
            correctly.  If, however, the resultant aggregate error in
            computing receipts or deliveries exceeds 0.5% for chromatograph
            or calorimeter and two percent (2%) for other measuring
            equipment, at a recording corresponding to the average hourly
            rate, of Gas flow rate for the period since the last preceding
            test, the previous recordings of such equipment shall be
            corrected to zero error for any period which is known
            definitely or agreed upon, such correction shall be for a
            period extending over one-half of the time elapsed since the
            date of the last test.
   
      6.4   In the event any measuring equipment is out of service, or is
            found registering inaccurately and the error is not determinable
            by test, previous recordings of injections or withdrawals
            through such equipment shall be determined as follows; provided,
            however, that the correction period shall not exceed one (1)
            year:
   
            (a)  by using the registration of any check meter or meters
                 if installed and accurately registering, or in the
                 absence of (a);
   
            (b)  by correcting the error if the percentage of error is
                 ascertainable by calibration, special test or
                 mathematical calculation, or in the absence of both (a)
                 and (b) then;