El Paso Natural Gas Company

Second Revised Volume No. 1A

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Effective Date: 04/01/2010, Docket: RP10-454-001, Status: Effective

Second Revised Sheet No. 292B Second Revised Sheet No. 292B

Superseding: First Revised Sheet No. 292B

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

11. SYSTEM OPERATIONAL PARAMETERS

11.1 Strained and Critial Operating Condition Procedures

Daily Imbalance - For Receipt Points, the "daily imbalance quantity" is

the difference between the daily scheduled quantity and the daily

quantity measured at the Receipt Point (if such Receipt Point is not

covered by an operational balancing agreement) for a Gas Day. For

Delivery Points, "daily imbalance quantity" is the difference between the

daily scheduled quantity and the daily quantity measured at a Delivery

Point (if such Delivery Point is not covered by an operational balancing

agreement) for a Gas Day. Any penalties or charges applicable to a daily

imbalance quantity will be calculated as described later in this Section

11.1.

(a) A Strained Operating Condition ("SOC") notice may be issued when

Transporter, using its reasonable judgment, determines operating

conditions exist where its pipeline system integrity is threatened

and/or service to other Shippers and/or Operators may be adversely

affected, and minor variations in receipt and delivery quantities

from scheduled levels can not be accommodated. Transporter will

determine whether it will issue an SOC based on the operating

status of the pipeline system using the following criteria:

weather forecast, system conditions-linepack, projected pressures

at monitored locations, facility status-horsepower utilization and

availability, and Transporter's operational judgment. Examples of

operating conditions which may result in a declaration of an SOC

include: (1) when a system outage occurs; (2) when extreme weather

conditions develop; (3) when linepack exceeds (above or below)

operational tolerances; (4) when injections or withdrawals cause

Washington Ranch to reach its maximum daily capabilities; or (5) an

Operator has demonstrated a consistent pattern of flowing

quantities that do not reasonably match scheduled quantities.

(i) Transporter's website will contain a notice identifying the

probability of an SOC declaration. The posting will be

reviewed each nomination cycle and updated, as applicable.

Probability notices will not be posted during an SOC event.

(A) Should the hourly average for any hour of the Gas Day

for total system linepack fall below 7200 MMcf, a high

probability condition will be triggered. Notification of

the high probability for a system-wide SOC declaration

will be automatically posted.