Western Gas Interstate Company

Third Revised Volume No. 1

Effective Date: 06/01/1993, Docket: RS92- 53-003, Status: Effective

Revised Original Sheet No. 273 Revised Original Sheet No. 273 : Superseded

GENERAL TERMS AND CONDITIONS

(continued)

Buyer's or Shipper's confirmed nomination and

(ii) the operational production and gathering

line capacity multiplied by the quotient of that

Buyer's or Shipper's MDTQ or MDCQ, as the case

may be, and the sum of the MDTQs and MDCQs of

each Buyer and Shipper who nominated affected

firm service.

(b) Interruptible Capacity - Interruptible transportation

shall be offered on the basis of price. When capacity

available to be scheduled for use by interruptible

shippers is less than the quantity nominated and

confirmed, capacity available for such interruptible

transportation shall be scheduled first for the

Shipper paying the highest rate. Capacity will be

prorated among interruptible Shippers that are paying

equal rates based on quantities nominated at the

affected Receipt Point(s) and Delivery Point(s), or

mainline segment, or production and gathering line, as

the case may be.

the right, on five days notice, to interrupt service

to any Shipper paying less than the maximum rate

Western is entitled to charge for such interruptible

service in order to enable Western to provide service

to another Shipper if such service would result in a

higher unit rate, excluding Retention Quantities, to

Western. The Shipper so affected may avoid such

interruption by immediately agreeing to pay such

higher rate.

(d) Extension of Service - A Shipper receiving service

under the Transportation Rate Schedules shall not lose

its capacity priority for purposes of this Section 15

by the renewal or extension of the term of that

service; provided, however any renewal or extension

must be pursuant to a rollover or evergreen provision

of the executed Service Agreement.