EX-23.1 4 exhibit23_1.txt CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the inclusion in this Annual Report on Form 10-K of American Ecology Corporation for the year ended December 31, 2004 and to the incorporation by reference in Registration Statement Numbers 33-55782, 33-58076, 33-11578, 333-69863 and 333-93105 of American Ecology Corporation on Forms S-8, of our report dated January 28, 2005. /S/ Moss Adams LLP Los Angeles, California March 1, 2005 1