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. 271 Third Revised Sheet No. 271

Superseding: Second Revised Sheet No. 271

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

8. OPERATING PROVISIONS

8.1 FIRM SERVICE (Continued)

(i) Hourly Entitlement Enhancement Nomination (Continued)

(ii) HEEN Specifications (Continued)

(I) HEEN Receipt and Delivery Points

1. HEEN Qualified Delivery Points (or Qualified Delivery

Points) are those points on Transporter's

transportation system where non-uniform flow and HEEN

service may be provided pursuant to the

specifications of this Section 8.1(i).

2. Eligible Receipt Points for HEEN nominations will be

determined by Transporter based on the pipeline

volume (pipe diameter, distance and pressure)

required to support the requested hourly flexibility

at HEEN Qualified Delivery Points.

3. HEEN Qualified Delivery Points and related eligible

Receipt Points will be identified on Transporter's

EBB and may vary from time to time. Upon Shipper's

request, Transporter shall consider adding new points

to the listed HEEN Qualified Delivery Points on the

EBB.

(iii) Automatic Scheduling Adjustments to HEEN

Transporter shall automatically adjust Shipper's HEEN

nomination in conjunction with a change to the related Flowing

Gas nomination(s) if Shipper's HEEN and Flowing Gas nominations

are on the same TSA and same Flow Path, and are nominated to

the same Delivery Point.

(A) Subject to the requirements listed below, Transporter

shall automatically decrease Shipper's HEEN nomination if

Shipper submits an increase to its Flowing Gas nomination,

whereby the sum of the Flowing Gas nomination and the HEEN

nomination exceed the Path Quantity. Shipper's HEEN

nomination shall be reduced by such quantity so that the

sum of the Flowing Gas nomination and the HEEN nomination

will equal the Path Quantity.

1. Shipper must submit a HEEN and Flowing Gas

nomination, and the HEEN nomination must be ranked

below the Flowing Gas nomination. No automatic HEEN

adjustment will occur if the HEEN nomination is

ranked above the Flowing Gas nomination.