ATG Mixed Waste Processing Begins.

Business Editors

FREMONT, Calif.--(BUSINESS WIRE)--Dec. 23, 1999

ATG Inc. (Nasdaq:ATGC), a leading provider of low-level radioactive waste treatment services, Thursday announced that it has begun non-thermal mixed waste processing at its new mixed waste facility in Richland, Wash.

At approximately 5 p.m. on Dec. 22, 1999, ATG started processing mixed waste received from the Department of Energy ("DOE") site at Hanford. These mixed wastes will be processed using super-compaction and macro-encapsulation technologies. Following the completion of processing and after meeting the land disposal requirements, the treated waste will be returned to DOE for disposal.

"ATG is pleased that after four years of stringent permitting procedures and technology development activities, we are now equipped to open our mixed waste facility," said Doreen Chiu, president and chief executive officer of ATG. "We are ready to deliver new services to the market and we are very encouraged by the overall response we have received from our clients," Chiu added.

ATG's mixed waste facility will be one of the most comprehensive mixed waste treatment facilities in the nation. The facility includes 19 different unit operations. Three of these units became operational yesterday. Construction of the balance of the non-thermal treatment equipment will continue and most non-thermal processes are expected to be complete by the end of February 2000.

Construction of the thermal treatment mixed waste facility has begun and is expected to be completed toward the end of the second quarter. Demonstration testing will be conducted over a two-month period and it is presently anticipated that commercial thermal operations will begin toward the end of the third quarter of the year.

ATG has three contracts to process waste for DOE facilities that total approximately $40 million, including all option years. The company has also received several purchase orders from commercial facilities and anticipates that additional mixed waste currently in storage at numerous DOE, Department of Defense and commercial facilities will become available for treatment as the company's facility becomes operational.

The mixed waste facility permits allow ATG to treat commercial and government generated wastes that have both low-level radioactive and hazardous waste contamination. Agencies that have granted permits to the facility include: U.S. EPA Region X; Washington State Department of Health; Washington State Department of Ecology; Benton County Clean Air Authority; and the City of Richland.

"After spending a great deal of time and resources, the regulatory bodies have been satisfied that the operation of ATG's treatment units will be safe to the workers and will be protective of the public and the environment," said Fred Feizollahi, vice president of engineering and technology. Feizollahi has been the project manager since the inception of the permitting process in 1995.

ATG is a radioactive and hazardous waste management company that offers comprehensive thermal and non-thermal treatment solutions for low-level radioactive and low-level mixed wastes generated by commercial entities such as nuclear power plants, medical facilities and research institutions, both in the United States and overseas and by the U.S. Departments of Defense and Energy.

Safe Harbor Statement

This announcement contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results could differ materially from those projected in the forward-looking statements as a result of various factors including the ability of the company to successfully commercialize its new technologies, as well as risk factors set forth under "Factors Affecting Future Operating Results" in the company's annual report on Form 10-K and such other risks detailed from time to time in the company's reports filed with the Securities and Exchange Commission. The company undertakes no obligation to publicly release the result of any revisions to these forward-looking statements, which may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.