Great Lakes Gas Transmission Limited Partner

Second Revised Volume No. 1

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Effective Date: 04/01/2004, Docket: RP04-188-002, Status: Effective

First Revised Sheet No. 19 First Revised Sheet No. 19 : Effective

Superseding: Original Sheet No. 19

GENERAL TERMS AND CONDITIONS

____________________________

(continued)

All flow, measuring, testing and related equipment shall be of standard manufacture, and

type approved by Transporter. Transporter or Shipper may install check measuring

equipment, provided that such equipment shall be installed so as not to interfere with the

operations of the operator. Transporter, or Shipper, in the presence of the other party or

operator, if applicable, shall have access to measuring equipment at all reasonable times,

but the reading, calibrating and adjusting thereof and the changing of charts, if any,

shall be done by the operator of the facilities. Transporter or Shipper shall have the

right to be present at the time of the installing, reading, cleaning, changing, repairing,

inspecting, testing, calibrating or adjusting done by the operator of the measuring

equipment. The records from such measuring equipment shall remain the property of the

operator, but upon request, Shipper or Transporter may request records, including charts,

if any, together with calculations therefrom for inspection, subject to return within ten

(10) business days after receipt thereof. Reasonable care shall be exercised in the

installation, maintenance and operation of the measuring equipment to avoid any inaccuracy

in the determination of the volume of gas received and delivered.

The accuracy of all measuring equipment shall be verified by operator at intervals of not

more than six (6) Months, and if requested, in the presence of representatives of the

Shipper or Transporter, but neither Transporter, Shipper nor operator shall be required to

verify the accuracy of such equipment more frequently than once in any thirty (30) Day

period. However, if an electronic measurement system is utilized, its components shall be

calibrated at least once every ninety (90) Days. If the operator agrees to verification

and testing of measuring equipment and fails to perform the verification and testing, then

Shipper or Transporter shall have the right to cease or temporarily discontinue service

under this Agreement relative to such measuring equipment. If either party at any time

desires a special test of any measuring equipment, it will promptly notify the other party

and the parties shall then cooperate to secure a prompt verification of the accuracy of the

equipment. The expense of any special test shall be borne by the party requesting it if

the measuring equipment is found to be in error by not more than 2%.

If, upon any test, any 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 2%, then previous

receipts or deliveries shall be considered accurate. All equipment shall, in any case, be

adjusted at the time of testing to record correctly. If, however, the resultant aggregate

error in computing receipts or deliveries exceeds 2%, 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 that

is known definitely or agreed upon, but in case the period is not known definitely, or

agreed upon, the correction shall be for the period extending over one-half of the time

elapsed since the date of the last test.

7.5 In the event any measuring equipment is out of service, or is found registering inaccurately,

previous recordings of receipts or deliveries through such equipment shall be corrected using

the following procedures:

(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;