UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 16, 2004 AMERICAN ECOLOGY CORPORATION (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE 0-11688 95-3889638 ------------------------------- ----------------- ---------------------- (State or other jurisdiction of (Commission File) (I.R.S. Employer incorporation or organization) Number Identification Number) Lakepointe Centre I, 300 E. Mallard, Suite 300 Boise, Idaho 83706 ------------------------------- ---------- (Address of principal executive (Zip Code) offices) (208) 331-8400 -------------- (Registrant's telephone number, including area code) 1 ITEM 1.01. ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT On December 16, 2004 American Ecology Corporation amended it's Credit Agreement with Wells Fargo Bank to provide for a maximum Letter of Credit Commitment amount of $5,500,000. A copy of the amendment is attached as exhibit 10.50g and incorporated by reference herein. Exhibit Eighth Amendment to Credit Agreement between American Ecology 10.50g Corporation and Wells Fargo Bank Dated December 16, 2004 2 SIGNATURES ---------- Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. AMERICAN ECOLOGY CORPORATION (Registrant) Date: December 16, 2004 By: /S/James R. Baumgardner --------------------------- James R. Baumgardner Senior Vice President, Chief Financial Officer, Secretary and Treasurer 3 EXHIBIT INDEX Exhibit Description ------- ----------- Exhibit 10.50g Eighth Amendment to Credit Agreement between American Ecology Corporation and Wells Fargo Bank Dated December 16, 2004 4