Questar Overthrust Pipeline Company

Second Revised Volume No. 1-A

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Effective Date: 08/04/2008, Docket: <Filing Not found>, Status: Effective

Second Revised Sheet No. 83 Second Revised Sheet No. 83

Superseding: First Revised 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, of which carbon dioxide may not exceed two 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.