Questar Overthrust Pipeline Company

Second Revised Volume No. 1-A

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

Original Sheet No. 104 Original Sheet No. 104 : Effective

GENERAL TERMS AND CONDITIONS

such as GRI and ACA charges, and the projected incremental volumes expected

to be transported. Overthrust will consider volumes to be incremental if the

volumes that will be transported would not otherwise flow through

Overthrust's system.

25.4 The economic value of a project shall be determined using the

discounted cash flow rate of return methodology. The minimum acceptable rate

of return may be published from time to time on Questline and/or on

Overthrust's web page.

When the present value of the incremental revenues from the

project is greater than the present value of the incremental cost of service,

Overthrust will pay for the cost of the contemplated facilities. When the

present value of the incremental revenues from the project is less than the

present value of the incremental cost of service, Shipper shall pay for the

cost of the contemplated facilities.

25.5 Shipper's payment for the cost of the new facility shall include

the full cost of the facility, the tax burden created by the payment as well

as the tax-on-tax effect generated by such payment. Reimbursement for

federal income taxes on Shipper's payment will be computed by first

determining the tax-on-tax effect, and then deducting the present value of

the future tax benefit provided by the future depreciation of plant involved

in the payment for the cost of the new facility.

The tax-on-tax effect will be determined by the product of (a) the

dollar amount qualifying as a contribution in aid of construction under the

Tax Reform Act of 1986 and (b) the "tax rate" divided by 1 minus the tax

rate:

i.e., [(Tax Rate) / (1-Tax Rate)]

The present value of the tax benefit provided by the future

depreciation of plant shall be determined by Overthrust.

25.6 When Overthrust has previously paid for receipt or delivery point

facilities under this facilities-reimbursement policy, Shipper shall,

nevertheless, promptly pay Overthrust for Overthrust's net book value of such

facilities when either of the following events occur: (a) when Overthrust's

ability to fully recover such costs is denied in any Section 4 or Section 5

rate proceeding, or (b)