EXHIBIT 25.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Diane C. Creel and Creighton K. Early, and each or either of them, as his or her true and lawful attorneys-in-fact and agents, with full power of substitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign the report on Form 10-K by the Earth Technology Corporation (USA), a Delaware corporation for the fiscal year ended August 25, 1995, and any and all amendments thereto, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, 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 in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them or their substitutes, may lawfully do or cause to be done by virtue thereof. Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated. Name Title Date ---- ----- ---- DIANE C. CREEL Chairwoman of the Board of November 22, 1995 -------------- Directors, Chief Executive Diane C. Creel Officer, and President CREIGHTON K. EARLY Executive Vice President, Chief November 22, 1995 ------------------ Financial Officer, (Principal Financial Creighton K. Early and Accounting Officer), and Director CHARLES D. APPLEQUIST Director November 22, 1995 --------------------- Charles D. Applequist JAMES E. CLARK Director November 22, 1995 -------------- James E. Clark RICHARD J. HECKMANN Director November 22, 1995 ------------------- Richard J. Heckmann LARRY J. LAWRENCE Director November 22, 1995 ----------------- Larry J. Lawrence MARTHA L. ROBINSON Director November 22, 1995 ------------------ Martha L. Robinson WARD W. JOHNSON Director November 22, 1995 --------------- Ward W. Johnson RICHARD H. GUILFORD Director November 22, 1995 ------------------- Richard H. Guilford