Questar Overthrust Pipeline Company

Second Revised Volume No. 1-A

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Effective Date: 01/01/2008, Docket: RP07-169-003, Status: Effective

First Revised Sheet No. 83 First Revised Sheet No. 83 : Effective

Superseding: Original Sheet No. 83

GENERAL TERMS AND CONDITIONS

14.4 Total Sulfur. The gas shall not contain more than 5 grains of

total sulfur per Mcf, of which not more than 2 grains shall be mercaptan

sulfur.

14.5 Oxygen. The gas shall not at any time have an oxygen content in

excess of ten parts per million by volume, and the parties shall make every

reasonable effort to keep the gas free of oxygen.

14.6 Temperature. The gas shall be delivered at a temperature not in

excess of 120 degrees Fahrenheit or less than 35 degrees Fahrenheit.

14.7 Inert Substances. The gas shall not contain inert substances of

more than three percent by volume.

14.8 Water Vapor. The gas shall not contain water vapor in excess of

five pounds per million cubic feet.

14.9 Cricondentherm Hydrocarbon Dew Point (CHDP).

(a) CHDP Limit - Overthrust will accept all deliveries of

natural gas with a CHDP equal to or less than 15 degrees Fahrenheit provided

that such gas satisfies all other applicable provisions of Overthrust's FERC

Gas Tariff.

(b) CHDP Operating Limit - Overthrust may, from time to time, as

operationally feasible, establish and post on its internet web site a CHDP

Operating Limit that is higher than the CHDP Limit for natural gas received

into its system on specified CHDP zones. Overthrust's ability to establish

and post higher CHDP Operating Limits for particular zones will depend on

operating characteristics such as pressures and temperatures, blending

capability of prevailing and expected gas supplies and proximity to

downstream city-gates and interconnecting pipelines.

(c) Overthrust shall not be obligated to accept gas into its

system that exceeds the posted CHDP Operating Limit. Establishment of CHDP

Operating Limits shall not be deemed to negate, reduce or limit Overthrust's

authority to issue Operational Flow Orders. To the extent operationally

practicable, Overthrust may waive its posted CHDP Operating Limit for gas

received from certain points on its system provided such waiver is made on a

non-discriminatory basis.

14.10 CHDP Operating Limit Posting Procedure.

(a) Overthrust may post a CHDP Operating Limit at or above the

CHDP Limit for each CHDP zone. The posted CHDP Operating Limit will apply to

all receipt points within that CHDP zone. CHDP zones will be identified on

Overthrust's Internet web site. Overthrust will provide as much prior notice

of changes to its CHDP Operating Limits as possible and attempt to provide at

least two days notice prior to the Cycle One nomination deadline. However,

Overthrust may reduce the CHDP Operating Limit to the CHDP Limit at any time

without notice, when operationally necessary. In such event, Overthrust will

post a critical notice on its Internet web site.