CH2M Hill Companies 10-K 2004 FY Annual report

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Exhibit 24.1

POWER OF ATTORNEY

        Each person whose signature appears below does hereby make, constitute and appoint each of Samuel H. Iapalucci, Ralph R. Peterson or JoAnn Shea as such person's true and lawful attorney-in-fact and agent, with full power of substitution, resubstitution and revocation to execute, deliver and file with the Securities and Exchange Commission, for and on such person's behalf, and in any and all capacities,

1.

An Annual Report on Form 10-K, any and all amendments (including post-effective amendments) thereto with all exhibits thereto and other documents in connection therewith

        granting unto said attorneys-in fact and agents full power and authority to do and perform each and every act and thing requisite and necessary to be done as fully to all intents and purposes as such person might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent or such person's substitute or substitutes may lawfully do or cause to be done by virtue hereof.

/s/  CAROLYN CHIN      Carolyn Chin	February 11, 2005
/s/  WILLIAM T. DEHN      William T. Dehn	February 11, 2005
/s/  DONALD S. EVANS      Donald S. Evans	February 11, 2005
/s/  JAMES J. FERRIS      James J. Ferris	February 11, 2005
/s/  JERRY D. GEIST      Jerry D. Geist	February 11, 2005
/s/  MICHAEL D. KENNEDY      Michael D. Kennedy	February 11, 2005
/s/  SUSAN D. KING      Susan D. King	February 11, 2005
/s/  RALPH R. PETERSON      Ralph R. Peterson	February 11, 2005
/s/  DAVID B. PRICE      David B. Price	February 11, 2005
/s/  M. CATHERINE SANTEE      M. Catherine Santee	February 11, 2005
/s/  THOMAS G. SEARLE      Thomas G. Searle	February 11, 2005
/s/  NANCY R. TUOR      Nancy R. Tuor	February 11, 2005
/s/  BARRY L. WILLIAMS      Barry L. Williams	February 11, 2005

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POWER OF ATTORNEY