THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Questar Corporation (STR)

4/5/2006 Proxy Information

R. Don Cash served as Chairman of Questar from May 1985 to May 2003, was Chief Executive Officer from May 1984 to May 2002 and President from May 1984 to February 2001.

4/4/2005 Proxy Information

R. Don Cash served as Chief Executive Officer of Questar from May of 1984 to May of 2002 and as Chairman from May of 1985 to May of 2003. He also served as President from May of 1984 to February 2001.

The Company furnishes Mr. Cash, as the retired Chairman of the Board, an office, telephone, and limited secretarial support in its Salt Lake City office.

4/5/2004 Proxy Information

The Company furnishes Mr. Cash, as the retired Chairman of the Board, an office, telephone, and limited secretarial support in its Salt Lake City office.

R. Don Cash served as Chief Executive Officer of Questar from May of 1984 to May of 2002 and as Chairman from May of 1985 to May of 2003. He also served as President from May of 1984 to February 2001.

4/7/2003 Proxy Information

Ms. Beck serves as a member of the Board of Trustees of Intermountain Health Care, Inc. (IHC), a nonprofit corporation that provides health care services in the Company's areas of operation. In 2002, the Company offered a self-insured option through IHC to employees under the Company's health plan. In 2002, the Company and its subsidiaries paid IHC a total sum of $870,993 in administrative fees. The terms of the relationship between IHC and the Company are available to other large employer groups

Mr. Simmons is the Chairman of the Board of Zions First National Bank. The Company has a line of credit through Zions, which is priced comparably with other bank credit arrangements. Some Company subsidiaries have accounts with Zions; these accounts have commercial terms available to other clients.

Mr. Cash has a consulting contract that became effective May 1, 2002. In return for an annual fee of $200,000 payable in monthly installments, Mr. Cash furnishes advisory services on such matters as investor relations activities, charitable contributions, and employee benefits. His contract extends through his service as Chairman of the Board.

The Company entered into a one-year consulting contract with Mr. Nordloh upon his retirement as President and Chief Executive Officer of the Company's Market Resources unit. In return for an annual fee of $120,000 payable in monthly installments, Mr. Nordloh agreed to advise Mr. Stanley on any matters relating to the unit and to refrain from competing with the Company's areas of interest.