X0202 4 2005-01-24 0 0000751652 QUESTAR CORP STR 0001179477 CASH R D 3205 61ST STREET LUBBOCK TX 79413 1 0 0 0 Common Stock and attached Common Stock Purchase Rights 2005-01-24 4 S 0 2000 50.77 D 296002 D Common Stock and attached Common Stock Purchase Rights 2005-01-24 4 S 0 2000 51.5 D 294002 D Common Stock and attached Common Stock Purchase Rights 37043 I Private Foundation Phantom Stock Units 0 Phantom Stock Units 0 39381.6116 D Common Stock and attached Common Stock Purchase Rights 0 Common Stock and attached Common Stock Purchase Rights 0 552774 D These shares were sold pursuant to a Rule 10b5-1 plan that was disclosed by my Form 144 filed on 1/7/2005. This total does not include 7,534 shares held indirectly through family trusts for which I have voting and investment control. I have a power of attorney for 6,000 shares owned by father for which I have investment and voting control. I disclaim any economic interest in these shares or in the shares held through family trusts. This Form 4 reports information that cannot be reconciled to past reports. We believe this information to be correct and that prior reports contained some errors. May 1, 2004-2006. This total includes 24,895.1614 phantom stock units held in an excess benefits plan. It also includes phantom stock units attributable to deferred director's fees. I began receiving cash payments for the value of phantom stock units (exclusive of deferral director's fees) effective May 1, 2003. I began receiving annual cash payments for the value of my phantom stock units attributable to deferred director's fees effective May 1, 2004. The question about dates is irrelevant since I am not reporting any changes in my stock options. Abigail L. Jones Attorney in Fact for R.D. Cash 2005-01-26