Solely for the purposes of complying with 18 U.S.C. §1350, I, the undersigned Chief Accounting
Officer of American Ecology Corporation (the
“Company”), hereby certify, that to my knowledge, that
the Annual Report on Form 10-K of
the Company for the period ended
December 31, 2006 (the
“Report”)
fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
1934 and that information contained in the Report fairly presents, in all material respects, the
financial condition and results of operations of
the Company as of the dates hereof and for the
periods expressed in this Report.
