The paper discusses stratospheric ozone protection from an EPA engineering perspective. Chlorine released in the atmosphere is a major factor in depleting the stratospheric ozone protective layer in the atmosphere. The Montreal Protocol as amended in 1990 and the Clean Air Act Amendments of 1990 address the limits and schedules to be placed on chlorine- and bromine-containing chemicals. The status of technology solutions to the problem for chlorofluorocarbons, halons, methylchloroform, and carbon tetrachloride in the major use areas of refrigeration, foam, aerosols, fire protection, and solvents is discussed. Included are cooperative efforts involving academia, industry, the U.S. Government, and nations who are contributing to the success that is being achieved.