El Paso Natural Gas Company

First Revised Volume No. 1-A

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Effective Date: 05/01/1993, Docket: RP93- 16-001, Status: Effective

Substitute Original Sheet No. 210A Substitute Original Sheet No. 210A : Superseded

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

4. SCHEDULING AND CAPACITY ALLOCATION (Continued)

4.3 Adjustments to Confirmed Volumes Received by El Paso in the

Event of Supply Underperformance

(a) If, on any day, El Paso determines in its reasonable

discretion that underdelivery of natural gas into

El Paso's system (supply underperformance), from a

gathering system or other receipt point, if allowed to

continue, could adversely affect system integrity,

El Paso shall have the right, after providing as much

advance notice as possible, to make adjustments at such

point to Operators' Day 1 confirmations to reflect more

accurately such Operators' previous actual deliveries of

supply into El Paso's system. An adjustment pursuant to

this Section 4.3 shall not eliminate Shippers' rights

pursuant to the Day 2 scheduling procedures set forth in

Section 4.1(a). The provisions of this Section 4.3 shall

apply either until the underdelivery is eliminated or

until this threat to system integrity no longer exists.

(b) El Paso shall identify potential threats to system

integrity by utilizing criteria such as: weather forecast

for the market area and producing area; system

conditions, including outages, maintenance, equipment

availability and line pack; overall projected pressures

at various locations; and storage conditions.

(c) When supply underperformance occurs and the deficient

source of supply is immediately identifiable, El Paso

shall make adjustments to that Operator's confirmed

volumes. Those supplies that are independently

verifiable by El Paso and which match the Operator's

confirmation shall not be subject to the provisions of

this Section 4.3. When the deficient source of supply is

not immediately identifiable, the smallest affected area

by wellhead, gathering system, interconnect or residue

plant, shall be identified and these procedures apply

only to that portion of the system.

The following procedures shall be used to adjust

Operators' confirmed volumes of natural gas in the event

of supply underperformance.