Enbridge Pipelines (Midla) Inc.

Second Revised Volume No. 2

Effective Date: 10/01/2001, Docket: GT01- 30-000, Status: Effective

Original Sheet No. 86 Original Sheet No. 86 : Effective

RATE SCHEDULE X-8

(Continued)

the measurement of gas, for the purposes hereof, shall be by the responsible

party's meters only, except as hereinafter specifically provided to the

contrary.

At least once each 35 days, on a date as near the first of each month as

practicable, the responsible party shall calibrate its meters and recording

instruments and any other party, if it has installed check meters or other

recording instruments, shall at the same time calibrate its meters and

instruments. Each party shall give notice to the other of the time of all

tests of metering equipment so that the other party may conveniently (but at

its own expense) have its representative present.

The meters, instruments and equipment installed by any party shall be

subject to inspection by the other at all reasonable times, and any party may

request that a test be made of the other's meters or instruments. If the

percentage of inaccuracy of the equipment in question shall be found to be

less than 2%, then the cost of such test shall be borne by the party

requesting the test.

If upon any test the percentage of inaccuracy of any metering equipment

is found to be in excess of 2%, previous readings of such equipment shall be

corrected for any period which is definitely known or agreed upon, but in

case such period is not so known or agreed upon, such correction shall be

made for a period covering the last half of the period since the last test,

but in no event for a period exceeding 15 days.

Any error resulting from the calculation of chart records shall be

corrected promptly upon detection if any party notifies the other of such

error within six months following the expiration of the month in which such

error was made.

If for any reason meters are out of service or out of repair so that the

amount of gas delivered cannot be ascertained or computed from the readings

thereof, the amount of gas delivered during such period shall be estimated

and agreed upon by the use of the first of the following methods which is

feasible: (a) by using the registration of any check measuring equipment if

installed and accurately registering, (b) by correcting the error if the

percentage of error is ascertainable