BOISE, ID--(Marketwire - July 16, 2007) - American Ecology Corporation (NASDAQ: ECOL) today announced that its shares now qualify for inclusion on the NASDAQ Global Select Market. The company's listing will be transferred at the opening of business today, Monday, July 16, 2007.

The NASDAQ Global Select Market has the highest initial listing standards of any exchange in the world based on financial and liquidity requirements. Prior to today's upgrade, American Ecology's common stock had been listed on the NASDAQ Global Market.

"We are pleased that our shares now qualify to be traded alongside NASDAQ's top tier companies," said Stephen A. Romano, President and Chief Executive Officer. "We view our ability to meet the superior listing standards of the NASDAQ Global Select Market as a significant achievement," he concluded.

For additional information about the NASDAQ Global Select Market, please go to:

About American Ecology Corporation

American Ecology Corporation, through its subsidiaries, provides radioactive, PCB, hazardous, and non-hazardous waste services to commercial and government customers throughout the United States, such as steel mills, medical and academic institutions, refineries, chemical manufacturing facilities and the nuclear power industry. Headquartered in Boise, Idaho, the Company is the oldest radioactive and hazardous waste services company in the United States.

Contact Information: Contact: Alison Ziegler Cameron Associates (212) 554-5469