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National Emission Standards for Hazardous Air Pollutants for Chemical Manufacturing Area Sources

Abstract: The National Emission Standards for Hazardous Air Pollutants (NESHAP) for Chemical Manufacturing Area Sources was promulgated on October 29, 2009. The standards included requirements for nine source categories in one subpart. On February 12, 2010, EPA received a petition for reconsideration from the American Chemistry Council and the Society of Chemical Manufacturers & Affiliates. The petitioners requested that EPA reconsider six aspects of the final rule because the requirements were not described in, nor were logical outgrowth of, the proposed rule. The six provisions are: (1) Title V permits are required for sources that installed controls after 1990 to become area sources (the source categories were exempt from title V in proposal); (2) the requirement that sources with equipment subject to the final rule and another rule comply with either each provision independently or with the most stringent requirements of each rule; (3) the requirement that leak inspections include "direct and proximal (thorough)" inspection of all areas of potential leak within the chemical manufacturing process unit (CMPU); (4) the requirement that process vessels in hazardous air pollution (HAP) service be equipped with a cover or lid that must be in place at all times when the vessel contains HAP, except for material addition and sampling; (5) the requirement to conduct leak inspections only during those periods when equipment is in HAP service; and (6) the broad definition of "family of materials" in determining applicability of CMPUs. On June 15, 2010, EPA granted reconsideration and in the supplemental proposal EPA requested comment on the six provisions.
RIN: 2060-AQ89
Type: Rule Making
SUB TYPE State Implementation Plan (SIP)
Location HQ-OAR

Supporting Documents (20)