Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action lists C7 Fluoroketone as an acceptable substitute, subject to narrowed use limits, for ozone-depleting substances used as streaming agents in the fire suppression and explosion protection sector. The program implements Section 612 of the Clean Air Act, as amended in 1990, which requires the Agency to evaluate substitutes and find them acceptable where they pose comparable or lower overall risk to human health and the environment than other available substitutes.