CREDIT AGREEMENT Dated as of March 11, 2008 among QUESTAR MARKET RESOURCES, INC., as the Borrower, BANK OF AMERICA, N.A., as Administrative Agent and L/C Issuer and The Lenders Party Hereto JPMORGAN CHASE BANK, N.A., WACHOVIA BANK, NATIONAL...Credit Agreement • May 5th, 2008 • Questar Market Resources Inc • Crude petroleum & natural gas • New York
