This action finalizes the residual risk and technology review conducted for the secondary lead smelting source category regulated under national emission standards for hazardous air pollutants. These final amendments include revisions to the emissions limits for lead compounds; revisions to the standards for fugitive emissions; the addition of total hydrocarbon and dioxin and furan emissions limits for reverberatory and electric furnaces; the addition of a work practice standard for mercury emissions; the modification and addition of testing and monitoring, recordkeeping, and reporting requirements; related notifications; and revisions to the regulatory provisions related to emissions during periods of startup, shutdown, and malfunction.