El Paso Natural Gas Company

Second Revised Volume No. 1A

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

Third Revised Sheet No. 270A Third Revised Sheet No. 270A

Superseding: Substitute Second Revised Sheet No. 270A

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

8. OPERATING PROVISIONS

8.1 FIRM SERVICE (Continued)

(i) Hourly Entitlement Enhancement Nomination (Continued)

(ii) HEEN Specifications (Continued)

(D)In the event a Shipper ranks its HEEN nomination below its

Flowing Gas nomination, such Flowing Gas nomination shall

not be reduced by such HEEN nomination.

(E) When applicable, Shipper shall specify its requested

hourly flow pattern pursuant to the procedures specified

in Section 6.1(a) of the GT&C.

(F) The sum of HEEN quantities and flowing gas quantities

scheduled at a Delivery Point under Rate Schedules NNTD

and NNTH may not exceed 90% of the MDQ without affecting

the quantity of no-notice service available, pursuant to

the applicable rate schedule.

(G) Subject to Section 8.1(i)(ii)(B) above, should Shipper

submit a HEEN nomination and Transporter is unable to

schedule all valid quantities, if, and to the extent, the

unscheduled HEEN quantities would have alleviated hourly

scheduling penalties, such penalties will not be assessed.

However, hourly scheduling penalties will apply to the

extent that the HEEN scheduling reduction is due to: 1)

the Shipper's actions, or 2) a COC declared in the

affected area pursuant to Section 11.1(b) of the GT&C.

(H) All HEEN nominations must be forward haul, subject to the

following:

1. A HEEN nomination may be used for transportation

service accomplished by a combination of forward haul

and displacement if the portion of forward haul

capacity is sufficient to reserve the capacity

necessary to support non-uniform deliveries at the

nominated Qualified Delivery Point. Transporter

shall list the displacement transactions that are

accomplished by the combination of partial forward

haul and partial displacement that qualify for HEEN

on its EBB.