X0202 4 2004-12-07 0 0000751652 QUESTAR CORP STR 0001174637 HOLBROOK CONNIE C 180 EAST 100 SOUTH SALT LAKE CITY UT 84111 0 1 0 0 Sr. VP, Gen. Counsel, Corp Sec Common Stock and attached Common Stock Purchase Rights 2004-12-07 4 M 0 100 15 A 136469 D Common Stock and attached Common Stock Purchase Rights 30029.2285 I Employee Investment Plan Common Stock and attached Common Stock Purchase Rights 48.09 2004-12-07 4 M 0 100 15 D 2003-08-08 2010-02-08 Common Stock and attached Common Stock Purchase Rights 100 117667 D Phantom Stock Units 48.09 2004-12-07 4 A 0 16.9058 48.09 A Phantom Stock Units 16.9058 8002.3467 D This total reflects gifts of stock for 400 shares made on a voluntary disclosure basis on December 6, 2004. As of December 6, 2004, I have 30,029.2285 equivalent shares of stock in my account in Questar's Employee Investment Plan. The number of equivalent shares will fluctuate as Questar's stock price changes; this fluctuation does not reflect any transactions that should be reported. Phantom stock units will be converted to cash beginning at retirement; my retirement date is unknown. I receive phantom stock units as a result of my participation in an excess benefit plan. This total includes 3,204.6728 units in such plan in addition to units held through my account balance in deferred compensation plans. This total also reflects an November 22nd allocation to such excess benefit plan. Connie C. Holbrook 2004-12-08