United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2003_register executive 2010-09-23 article Part II Rules and Regulations D09002ee1c816b90a D09002ee1c816ba62 United States Environmental Protection Agency originator org United States Government Agency or Subagency This action promulgates national emission standards for hazardous air pollutants (NESHAP), specifically mercury emissions, from mercury cell chlor-alkali plants. The final rule will limit mercury air emissions from these plants. The final rule will implement section 112(d) of the Clean Air Act (CAA) which requires all categories and subcategories of major sources and area sources listed under section 112(c) to meet hazardous air pollutant emission standards reflecting the application of the maximum achievable control technology (MACT). Mercury cell chlor-alkali plants are a subcategory of the chlorine production source category listed under the authority of section 112(c)(1) of the CAA. The chlorine production source category was also identified as a source of mercury under section 112(c)(6) that must be subjected to standards. In addition, mercury cell chlor-alkali plants were listed as an area source category under section 112(c)(3) and (k)(3)(B) of the CAA. The final rule, which will satisfy our requirement to issue 112(d) regulations under each of these listings (for mercury), will reduce mercury emissions by about 3,068 kilograms per year from the levels allowed by the existing Mercury NESHAP. Mercury is a neurotoxicant that accumulates, primarily in the especially potent form of methylmercury, in aquatic food chains. The highest levels are reached in predator fish species. Mercury emitted to the air from various types of sources (usually in the elemental or inorganic forms) transports through the atmosphere and eventually deposits onto land or water bodies. When mercury is deposited to surface waters, natural processes (bacterial) can transform some of the mercury into methylmercury that accumulates in fish. Ingestion is the primary exposure route of interest for methylmercury. The health effect of greatest concern due to methylmercury is neurotoxicity, particularly with respect to fetuses and young children. In addition, in this final action, we are utilizing our authority under section 112(d)(4) of the CAA not to regulation chlorine and hydrochloric acid (HCl) emissions from the mercury cell chlor-alkali plant subcategory. 68 FR 70904 https://www.govinfo.gov/app/details/FR-2003-12-19/03-22926 03-22926 fr19de03-13 RIN 2060-AE85 6560-50-P OAR-2002-0017 FRL-7551-5 https://www.govinfo.gov/app/details/FR-2003-12-19/03-22926 https://www.govinfo.gov/content/pkg/FR-2003-12-19/html/03-22926.htm https://www.govinfo.gov/content/pkg/FR-2003-12-19/pdf/03-22926.pdf Environmental Protection Administrative Practice and Procedure Air Pollution Control Hazardous Substances Intergovernmental Relations Recordkeeping and Reporting Requirements 43 p. 70904 70946 68 FR 70904 Title 40 Part 63 40 CFR Part 63 RIN 2060-AE85 National Emission Standards for Hazardous Air Pollutants: Mercury Emissions From Mercury Cell Chlor-Alkali Plants; Federal Register Vol. 68, Issue RULE 03-22926 II ENVIRONMENTAL PROTECTION AGENCY OAR-2002-0017 FRL-7551-5 6560-50-P 03-22926 Final rule.

This action promulgates national emission standards for hazardous air pollutants (NESHAP), specifically mercury emissions, from mercury cell chlor-alkali plants. The final rule will limit mercury air emissions from these plants. The final rule will implement section 112(d) of the Clean Air Act (CAA) which requires all categories and subcategories of major sources and area sources listed under section 112(c) to meet hazardous air pollutant emission standards reflecting the application of the maximum achievable control technology (MACT). Mercury cell chlor-alkali plants are a subcategory of the chlorine production source category listed under the authority of section 112(c)(1) of the CAA. The chlorine production source category was also identified as a source of mercury under section 112(c)(6) that must be subjected to standards. In addition, mercury cell chlor-alkali plants were listed as an area source category under section 112(c)(3) and (k)(3)(B) of the CAA. The final rule, which will satisfy our requirement to issue 112(d) regulations under each of these listings (for mercury), will reduce mercury emissions by about 3,068 kilograms per year from the levels allowed by the existing Mercury NESHAP. Mercury is a neurotoxicant that accumulates, primarily in the especially potent form of methylmercury, in aquatic food chains. The highest levels are reached in predator fish species. Mercury emitted to the air from various types of sources (usually in the elemental or inorganic forms) transports through the atmosphere and eventually deposits onto land or water bodies. When mercury is deposited to surface waters, natural processes (bacterial) can transform some of the mercury into methylmercury that accumulates in fish. Ingestion is the primary exposure route of interest for methylmercury. The health effect of greatest concern due to methylmercury is neurotoxicity, particularly with respect to fetuses and young children. In addition, in this final action, we are utilizing our authority under section 112(d)(4) of the CAA not to regulation chlorine and hydrochloric acid (HCl) emissions from the mercury cell chlor-alkali plant subcategory.

December 19, 2003. For information concerning applicability and rule determinations, contact your State or local regulatory agency representative or the appropriate EPA Regional Office representative. For information concerning analyses performed in developing the final rule, contact Mr. Iliam Rosario, Metals Group, Emission Standards Division (C439-02), U.S. EPA, Research Triangle Park, North Carolina 27711; telephone number (919) 541-5308; fax number Environmental Protection Administrative Practice and Procedure Air Pollution Control Hazardous Substances Intergovernmental Relations Recordkeeping and Reporting Requirements Air pollutants, hazardous; national emission standards: Mercury emissions from mercury cell chlor-alkali plants, rosario.iliam@epa.gov http://www.epa.gov/edocket/ http://www.epa.gov/fedrgstr/ http://www.epa.gov/iris/subst/0396.htm http://www.epa.gov/ttn/oarpg Vol. 68, no. 244 Office of the Federal Register, National Archives and Records Administration 2003-12-19 continuing daily deposited born digital 317 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2003-12-19 P0b002ee1809d7402 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr19de03 https://www.govinfo.gov/app/details/FR-2003-12-19 https://www.govinfo.gov/content/pkg/FR-2003-12-19/pdf/FR-2003-12-19.pdf https://www.govinfo.gov/content/pkg/FR-2003-12-19/xml/FR-2003-12-19.xml fdlp 70689 70994 DGPO 2010-09-23 2024-06-07 FR-2003-12-19 machine generated eng FR FR-2003-12-19 68 244