QUESTAR ANNOUNCES MANAGEMENT TRANSITION IN E&P SUBSIDIARY

SALT LAKE CITY — Questar Corp. (NYSE:STR) today announced a management transition in its Questar Market Resources (QMR) subsidiary, which conducts gas and oil exploration and production and other nonregulated activities.

In a planned transition, Gary L. Nordloh will retire as president and chief executive officer of QMR and affiliates, as executive vice president, Questar Corp., and a member of Questar's board of directors, effective Nov. 1, 2002. Nordloh will remain on QMR's board of directors and serve as an advisor to senior management.

Charles B. Stanley, currently QMR executive vice president and chief operating officer, will become president and CEO of QMR and affiliates and executive vice president, Questar Corp., effective Nov. 1, concurrent with Nordloh's retirement.

Nordloh has served as QMR president and CEO since 1991 and was named a Questar director in 1996. During his decade as president, QMR's net income increased fourfold to $101.1 million in 2001. Over that period, QMR grew proved reserves at a 19% compound annual growth rate and nonregulated production at a 15.5% compound annual rate, while generating returns on invested capital that are among the best in its peer group.

"Gary Nordloh has been the driving force behind QMR's emergence as one of the most efficient and profitable independent E&P companies in the industry," said Keith O. Rattie, Questar president and CEO. "Gary's legacy includes not only strong financial results, but also a seasoned, disciplined and focused E&P organization. With Gary remaining on QMR's board of directors, Questar will continue to benefit from his business judgment and input as we move QMR forward."

Rattie said Stanley —  who joined Questar in February 2002 — "is a talented E&P executive, a team player and a leader." Rattie said Stanley, 43, "has managed both domestic and international exploration and production operations as well as midstream and marketing activities. Chuck, like Gary Nordloh, is disciplined, focused and determined to lead QMR to the next level of profitable growth."

After graduating from Virginia Polytechnic Institute, Stanley began his professional career in 1981 as a research and field geologist for the Virginia Geologic Survey. From 1984 to 1989, he was involved with exploration and appraisal for British Petroleum Co. Beginning in 1989, he served in a variety of capacities with Maxus Energy Corp., Dallas, Tex., including vice president of international exploration and development.

Stanley joined the Coastal Corp. of Houston, Tex., in 1995, serving four years as president, CEO and director of Coastal Gas International Co. Following the Coastal-El Paso Corp. merger, Stanley was named president and CEO of El Paso's Canadian E&P business.

Questar is a $3.1 billion diversified natural gas company headquartered in Salt Lake City. Through subsidiaries, it engages in gas and oil development and production; gas gathering, processing and marketing; interstate gas transmission and storage; retail gas distribution; retail energy services; and information systems and technologies.