Questar Announces Second-Quarter 2008 Earnings Teleconference and Webcast

Questar Corp. (NYSE:STR) will host a teleconference and Webcast to discuss second-quarter 2008 results beginning at 9:30 a.m. EDT (7:30 a.m. MDT) on Tuesday, July 29, 2008. Keith Rattie, Questar chairman, president and CEO, and Stephen Parks, senior vice president and CFO, will make presentations. Questar plans to issue its second-quarter 2008 earnings release Monday, July 28, 2008.

Interested persons may listen to the Webcast online at the Questar Web site, www.questar.com. A podcast will also be available for download following the Webcast at www.questar.com. A replay of the teleconference will be available in the Financial Information/Audio Archives section of the Web site. A telephone audio replay will be available from July 29 to July 31, by calling (800) 642-1687 domestically or (706) 645-9291 internationally, then pressing 30563544.

Questar is a natural gas-focused energy company with about $14 billion in enterprise value. Headquartered in Salt Lake City, Questar engages in gas and oil development and production; gas gathering, processing and marketing; interstate gas transmission and storage; and retail gas distribution.