ATG To Repair and Perform Maintenance On SAFGLAS.

FREMONT, Calif.--(BUSINESS WIRE)--Sept. 9, 1999--

ATG Inc. (Nasdaq:ATGC), a leading provider of low-level radioactive waste treatment services, Thursday announced that it is undergoing a temporary shutdown of its Richland, Wash., SAFGLAS(TM) waste processing facility for repairs and maintenance.

ATG's SAFGLAS(TM) process, which went thermally "hot" in August 1997, has remained thermally hot 24 hours a day, seven days a week since that time. This two-year period at constant high temperatures is, in management's belief, unprecedented for high temperature radioactive waste processing systems.

On Sept. 5, a failure of a bottom drain caused approximately two drums equivalent of molten glass to be released into the containment pit below the SAFGLAS(TM) glass melter.

While this release did not result in any releases of radioactive materials into the environment and did not pose any hazard to ATG's employees or to the general public (i.e., the release was totally contained), the molten glass did damage some ancillary electrical and hydraulic components that must now be repaired or replaced.

On Sept. 5, the company shut down the SAFGLAS(TM) system in order to repair or replace the damaged ancillary components. ATG had been planning a routine maintenance outage for the system in early 2000 to refurbish refractory materials and to effect design improvements. Some portions of this maintenance will be conducted during the current shutdown.

ATG anticipates that the SAFGLAS(TM) system will not resume full operational capacity until sometime between Sept. 15 and the end of the month. Consequently, ATG anticipates a shortfall, in a presently indeterminable amount, in projected third-quarter revenue and earnings due to the lost processing capacity and the cost of the repairs and maintenance.

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.

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.