1 [ARTHUR ANDERSEN LETTERHEAD] ------------------ Arthur Andersen LLP November 25, 1996 ------------------- Suite 1300 Office of the Chief Accountant 711 Louisiana Street SECPS Letter File Houston TX 77002-2786 Securities and Exchange Commission 713 237-2373 Mail Stop 9-5 450 Fifth Street, N.W. Washington, D.C. 20549 Gentlemen: We have read Item 4 included in the attached Form 8-K dated November 25, 1996 of American Ecology Corporation to be filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, /s/ ARTHUR ANDERSEN LLP ARTHUR ANDERSEN LLP amecol Copies to: Mr. Jack Lemley Mr. Gary Davis American Ecology Corporation