WASHINGTON GROUP RETENTION AGREEMENTS WITH NAMED EXECUTIVES EACH DATED AS OF MARCH 14, 2001 George H. Juetten Thomas H. Zarges DATED AS OF NOVEMBER 16, 2001 Stephen M. Johnson

Exhibit 10.23.1

SCHEDULE TO EXHIBIT 10.23.1

WASHINGTON GROUP RETENTION AGREEMENTS

WITH NAMED EXECUTIVES

EACH DATED AS OF MARCH 14, 2001

Xxxxxx X. Xxxxxxx

Xxxxxx X. Xxxxxx

DATED AS OF NOVEMBER 16, 2001

Xxxxxxx X. Xxxxxxx

NOTE:  Xx. Xxxxxxx’x Retention Agreement is identical in all materials terms to those entered into with Messrs Xxxxxxx and Zarges, with the exception that his Retention Bonus is prorated to allow for the time during early 2001 when he was not in the Company’s employ.  Xx. Xxxxxxx returned to the employ of the Company on November 12, 2001.