April 3, 2000
(N)
NYSE:STR
00-08

Contact: Chad Jones
Office: (801) 324-5495

Questar Pipeline Buys Additional Interest in Overthrust Pipeline

SALT LAKE CITY — Questar Pipeline announced it has purchased Enron Overthrust Pipeline Co.'s 18 percent interest in the Overthrust Pipeline effective Jan. 1, 2000.

     The transaction gives Questar Pipeline a 72 percent interest in the 88-mile, 36-inch-diameter pipeline, which runs from the Whitney Canyon area — north of Evanston, Wyo. — to Rock Springs, Wyo. Questar Pipeline designed and built the Overthrust Pipeline, and has operated it since its completion in October 1982. Other partners are Natural Gas Pipeline Co. of America and Colorado Interstate Gas Co.

     "Increased ownership of the Overthrust Pipeline is a natural fit for us," said Questar Pipeline President Nick Rose. "Its location in our service territory and proximity to our facilities and supply sources will enhance the services we provide."

     The Overthrust Pipeline is a segment of the 793-mile Trailblazer system, which runs from southwestern Wyoming to Beatrice, Neb., about 40 miles south of Lincoln.

     Questar Pipeline is a wholly owned subsidiary of Questar Corp. (NYSE:STR). Questar is a Salt Lake City-based integrated energy resource and services company with $2.2 billion in assets. Enron Overthrust Pipeline Co. is a subsidiary of Enron Corp. (NYSE:ENE), headquartered in Houston.

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VISIT QUESTAR'S INTERNET SITE at: http://www.questar.com. For more information, see Company News On-Call: http://www.prnewswire.com or fax 800-758-5804, ext. 728887