Mark Stewart

Environmental Supervisor

Questar Corporation

Questar Corporation (Questar) is a natural gas-focused energy company with four major lines of business: gas and oil exploration and production, midstream field services, energy marketing, interstate gas transportation, and retail gas distribution. The Company’s operations are conducted through its three principal subsidiaries. Questar Market Resources, Inc. (Market Resources) is a sub holding company that operates through four principal subsidiaries: Questar Exploration and Production Company (Questar E&P), Wexpro Company (Wexpro) Questar Gas Management Company (Gas Management) and Questar Energy Trading Company (Energy Trading) Questar Pipeline Company (Questar Pipeline) provides interstate natural gas transportation and storage services. Questar Gas Company (Questar Gas) provides retail natural gas distribution.


Biography coming soon.