TransColorado Gas Transmission Company

Original Volume No. 1

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Effective Date: 12/01/2003, Docket: RP00-459-002, Status: Effective

Original Sheet No. 257B Original Sheet No. 257B : Superseded

GENERAL TERMS AND CONDITIONS

20. SYSTEM OPERATION - (Continued)

(vi) Reconcile transportation imbalances; and/or

(vii) Such other voluntary action as would tend to

alleviate or forestall the situation.

(b) TransColorado may also take actions within its control

that might tend to alleviate or forestall the situation. Such actions may

include the following:

(i) Advise any Shipper which is not maintaining

receipts and deliveries in balance that such imbalances must not continue;

(ii) Curtail or require adjustments or supply shifts in

IT service; and/or

(iii) Take such other actions as are within

TransColorado's control and discretion to alleviate or forestall the

situation.

20.5 Critical Time Notice.

(a) A Critical Time may be declared (1) when the total

physical receipts to all or a portion of the system are approaching or

expected to approach a level that is in excess of the total physical

deliveries (2) when the total physical deliveries from all or a portion of

the system are approaching or expected to approach, a level that is in

excess of the total physical receipts; (3) when system pressure on one or

more pipeline segments is falling and approaching a level or is expected

to fall and approach a level that is at or below the minimum that

TransColorado considers necessary for system integrity or to fulfill its

firm contractual obligations; (4) when system pressure on one or more

pipeline segments is rising and approaching a level or is expected to

rise and approach a level that is at or above the maximum pressure at

which TransColorado's facilities may be safely operated; or (5) at other

times when TransColorado is unable or anticipates it may not be able to

fulfill its firm contractual obligations or otherwise when necessary to

maintain the overall operational integrity of all or a portion of

TransColorado's system. A Critical Time may not be declared on all or a

portion of the system for the purpose of maintaining interruptible

services on that portion of the system, but interruptible gas may flow at

times or on portions of the system when such flow would not violate any

operational control restrictions or provisions of this Tariff.

TransColorado shall notify Shippers on the DART system as to the reason(s)

why a Critical Time was declared.