Federal Register #2026-11047

EPA Final Rule: Updated Emission Standards for Hazardous Waste Combustors

The Environmental Protection Agency (EPA) has finalized a regulatory rule, not a procurement, establishing updated emission standards for hazardous waste combustors (HWCs): - Applies to approximately 163 HWCs at 92 facilities, including incinerators, cement kilns, solid fuel boilers, and liquid fuel boilers - No products or services are being procured; this is a compliance requirement for affected facilities - New emission limits set for: - Hydrogen fluoride (HF) and hydrogen cyanide (HCN) for major source HWC incinerators, cement kilns, solid fuel boilers, and liquid fuel boilers - Specific numeric limits include: - 6.2 ppmv HF for solid fuel boilers - 5.0 ppmv HCN for solid fuel boilers - 56 ppmv HCN for cement kilns - HCN limits for liquid fuel boilers vary by capacity (e.g., 2.7 ppmv for >50 to ≤250 MMBTU/hr) - Work practice standards established for startup, shutdown, and malfunction (SSM) periods - Electronic reporting requirements introduced for compliance data - Title V permitting authorities may exempt certain area source HWCs from permitting requirements - Compliance deadlines: - Existing sources: three years from rule effective date - New sources: immediate compliance upon startup or effective date - No OEMs or vendors are specified, as this is a regulatory action - Key locations: EPA Docket Center (Washington, DC) and EPA Natural Resources Division (Research Triangle Park, NC)

Description

This final rule by the Environmental Protection Agency (EPA) finalizes the residual risk and technology review for the National Emission Standards for Hazardous Air Pollutants (NESHAP) from Hazardous Waste Combustors (HWC). The rule confirms that existing standards adequately address risks from hazardous air pollutants and provides an ample margin of safety to protect public health. It establishes emission standards for hydrogen fluoride (HF) and hydrogen cyanide (HCN) for major source HWC incinerators, cement kilns, solid fuel boilers, and liquid fuel boilers. The rule also includes work practice standards for startup, shutdown, and malfunction periods, electronic reporting provisions, and exemptions for certain area source HWCs.

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