Questar Overthrust Pipeline Company

Second Revised Volume No. 1-A

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Effective Date: 04/25/2007, Docket: RP07-360-000, Status: Effective

Original Sheet No. 113 Original Sheet No. 113 : Effective

GENERAL TERMS AND CONDITIONS

31.9 Accounting for Costs and Revenues. Allocation of costs to, and

recording of revenues from, service at negotiated rates or rate formulas will

follow Overthrust's normal practices associated with transportation services

provided under this tariff. If Overthrust institutes any revenue tracker or

other device to flow through to its Shippers the impact of interruptible or

other transportation transactions, the treatment of such tracker of revenues

from nonconforming negotiated rates or rate formulas shall be specified in

the applicable tariff provision.

31.10 Rate Case Tracking. Overthrust will separately record the volume

transported, billing determinants, rate components, surcharges and the

revenue associated with its negotiated-rate transactions so that this

information can be separately identified, and separately totaled as part of

Statements G, I, and J in any applicable rate case filing under § 4(e) of the

Natural Gas Act, 15 U.S.C. & § 717(c). Additionally, transactions that

originate as discounted pre-existing Part 284 service agreements and are

subsequently converted to negotiated-rate agreements will be recorded

separately from those transactions originating as negotiated-rate agreements.

Overthrust's recovery of surcharges will comport with existing practices.