ATG Completes Repairs and Maintenance On SAFGLAS System; Expects to be Fully Operational by the End of the Week.

FREMONT, Calif.--(BUSINESS WIRE)--Sept. 21, 1999--

ATG Inc. (Nasdaq:ATGC), a leading provider of low-level radioactive waste treatment services, Tuesday announced that repairs and upgrades to its SAFGLAS(TM) low-level waste thermal processing system have been completed.

The standard start-up procedures take about four days and began on Sept. 20, 1999, at noon. Both the glass melter and the bulk- processing unit (BPU) are expected to return to full operational status on Sept. 24, 1999.

The SAFGLAS(TM) glass melter provides a state-of-the-art and environmentally friendly technology for processing commercial low-level radioactive wastes. The BPU provides specialized treatment capabilities for low-level radioactive wastes that require custom treatment approaches due to environmental or customer requirements.

The BPU is currently tied into the second zone of the SAFGLAS(TM) glass melter, which results in the complete processing of BPU exhaust gases.

Both the glass melter and BPU units ceased operations on Sept. 5, 1999, due to the failure of a SAFGLAS(TM) glass drain. Approximately 100 gallons of hot glass was released into the containment area under the glass melter.

This release did not result in any safety hazards or environmental releases, but it did cause some damage to electrical and cooling water service components that were located in the release area. All systems have been repaired and insurance claims have been filed with the insurance carriers.

Bill Hewitt, president of waste services for ATG, said: "Our Richland and Oak Ridge operations group responded very quickly and professionally to bring the systems back on line. We are extremely pleased that operations could resume according to schedule."

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.