National Emission Standards for Hazardous Air Pollutants: Paper and Other Web Coating Residual Risk and Technology Review

This action finalizes the residual risk and technology review (RTR) conducted for the Paper and Other Web Coating (POWC) source category regulated under national emission standards for hazardous air pollutants (NESHAP). The Agency is finalizing the proposed determination that risks due to emissions of air toxics are acceptable from this source category and that the current NESHAP provides an ample margin of safety to protect public health. Further, the U.S. Environmental Protection Agency (EPA) identified no new cost-effective controls under the technology review that would achieve significant further emissions reductions, and, thus, is finalizing the proposed determination that no revisions to the standards are necessary based on developments in practices, processes, or control technologies. In addition, the Agency is taking final action addressing startup, shutdown, and malfunction (SSM). These final amendments address emissions during SSM events, add a compliance demonstration equation that accounts for retained volatiles in the coated web; add repeat testing and electronic reporting requirements; and make technical and editorial changes. The EPA is making these amendments to improve the effectiveness of the NESHAP, and although these amendments are not expected to reduce emissions of hazardous air pollutants (HAP), they will improve monitoring, compliance, and implementation of the rule.