El Paso Natural Gas Company

Second Revised Volume No. 1A

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Effective Date: 05/01/2008, Docket: RP05-422-024, Status: Effective

Fourth Revised Sheet No. 150A Fourth Revised Sheet No. 150A : Pending

Superseding: Third Revised Sheet No. 150A

RATE SCHEDULE OPAS

Operator Point Aggregation Service

(Continued)

2. APPLICABILITY AND CHARACTER OF SERVICE (Continued)

2.5 The OPASA shall identify the subject D-Codes, MDO and MHO at each

delivery meter within each such D-Code.

(a) The MDO and the MHO for a delivery meter shall not exceed the

meter capacity at that Delivery Point or the upstream capacity

available on a firm basis to serve that delivery meter.

(b) DP Operators may utilize different delivery meters within their

designated D-Code; however, Transporter shall have no

obligation to provide service above the MDO, the MHO, or the

applicable MDQ for a D-Code.

(c) Pressure obligations at any meter in a D-Code will be specified

in either the OPASA or a TSA covering that D-Code.

(d) In the event that Transporter determines that changes in system

operations result in a D-Code, MDO and/or MHO levels that may

potentially degrade the firm rights of other Shippers or firm

service reliability, Transporter shall promptly notify the

affected DP Operator that Transporter deems it necessary to

revise that D-Code, MDO and/or MHO levels to protect Shippers

on its system. Such revision(s) will be undertaken pursuant to

Section 6 of this rate schedule. If the parties agree to the

revisions, the OPASA shall be amended or replaced to reflect

the change and the revised D-Code designation, MDO and/or MHO

levels shall be posted on Transporter's EBB. If the parties

fail to agree to the revisions, then either party may terminate

the OPASA on fourteen Days notice. Transporter shall provide

DP Operator with the operational reasons for termination when

such termination is the result of the parties' failure to agree

to a revised D-Code or a revised MDO/MHO level.

2.6 All effective D-Codes, together with their associated individual

delivery meters and related MDOs will be identified on Transporter's

EBB.