Credit Rating Summary

Questar Gas Moody's S&P Fitch
Corporate / Issuer A3 BBB+ A-
Senior Unsecured Debt Securities A3 BBB+ A
Short-Term / Commercial Paper P-2 A-2 F1
Outlook Stable Stable Stable

Selected Issuance Documentation

Year CUSIP Security Series Prospectus
2008 74837HAA4 $100M 7.2%
Senior Notes due 2038
Prospectus