US Ecology 10-Q 2006 Q2 Quarterly report

Exhibit 32.2

Written Statement of the Chief Accounting Officer

Pursuant to 18 U.S.C. §1350

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, based on my knowledge, that the Quarterly Report on Form 10-Q of the Company for the period ended June 30, 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.

/s/ Michael J. Gilberg

Michael J. Gilberg

July 28, 2006