A supportive regulatory environment with cost recovery mechanisms that enhance cash flow predictability; Low-operating-risk gas distribution utilities and pipeline assets; A superior service territory with above-average population growth prospects; Strong access to gas supply and storage; and An arrangement with Wexpro Co., the company's cost-of-service exploration and production operation, to provide natural gas to the Questar Gas Co. utility at cost plus a fixed return. Exposure to persistently weak natural gas prices, which could reduce the benefit of Wexpro's natural gas supplies to Questar Gas Co. over the long term. The ratings on Questar Gas Co. (QGC) reflect the consolidated credit profile of its parent, U.S. natural gas company Questar Corp. (A/Stable/A-1). The ratings on Questar Corp. reflect the company's