Environmental Protection Agency November 9, 2020 – Federal Register Recent Federal Regulation Documents
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Air Plan Approval; Wisconsin; PSD and Nonattainment NSR Rule Clarifications
The Environmental Protection Agency (EPA) is proposing to approve a revision to the Wisconsin state implementation plan (SIP), submitted by the Wisconsin Department of Natural Resources (WDNR) on September 30, 2008. The revision updates the definition of ``Replacement Unit'' and clarifies a component of the emission calculation used to determine emissions under a plantwide applicability limitation (PAL) in the Wisconsin Administrative Code. Approving this revision makes Wisconsin rules consistent with Federal rules.
National Emission Standards for Hazardous Air Pollutants: Polyvinyl Chloride and Copolymers Production Reconsideration
On April 17, 2012, the U.S. Environmental Protection Agency (EPA) promulgated National Emission Standards for Hazardous Air Pollutants (NESHAP) for Polyvinyl Chloride and Copolymers (PVC) Production at major and area sources. Subsequently, the Administrator received and granted petitions for reconsideration of the emission limits in the 2012 final rules for process vents, process wastewater, and stripped resin for major and area sources. In response to the petitions and after gathering additional information from PVC companies, the EPA is proposing revisions to emission limits in the 2012 major source rule for process vents and process wastewater. Although the EPA is not proposing revisions to emission limits in the 2012 area source rule, the EPA is proposing other amendments that affect both rules, including technical corrections and clarifications related to the standards for stripped resin, storage vessels (including the use of vapor balancing), equipment leaks, and closed vent systems. The EPA is also proposing to clarify text and correct typographical errors, grammatical errors, and cross-reference errors in both rules. In addition, the EPA is proposing to remove the affirmative defense provisions. We estimate that, if finalized, these proposed amendments would result in hazardous air pollutants (HAP) emissions reductions of 34 tons per year (tpy) with an annualized cost of $0.39 million.
Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; California; South Coast Moderate Area Plan and Reclassification as Serious Nonattainment for the 2012 PM2.5
The Environmental Protection Agency (EPA) is taking final action to approve or conditionally approve portions of a state implementation plan (SIP) revision submitted by California to address Clean Air Act (CAA or ``Act'') requirements for the 2006 and 2012 fine particulate matter (PM2.5) national ambient air quality standards (NAAQS or ``standards'') in the Los Angeles-South Coast Air Basin (``South Coast'') PM2.5 nonattainment area. Specifically, the EPA is approving all but the contingency measure element of the submitted SIP revision as meeting all applicable Moderate area requirements for the 2012 annual PM2.5 NAAQS, and conditionally approving the contingency measure element as meeting both the Moderate area contingency measure requirement for the 2012 annual PM2.5 NAAQS and the Serious area contingency measure requirement for the 2006 24-hour PM2.5 NAAQS. In addition, the EPA is approving 2019 and 2022 motor vehicle emissions budgets for use in transportation conformity analyses for the 2012 annual PM2.5 NAAQS. The EPA is also reclassifying the South Coast PM2.5 nonattainment area, including reservation areas of Indian country and any other area of Indian country within it where the EPA or a tribe has demonstrated that the tribe has jurisdiction, as a Serious nonattainment area for the 2012 annual PM2.5 NAAQS based on the EPA's determination that the area cannot practicably attain the standard by the applicable Moderate area attainment date of December 31, 2021. As a consequence of this reclassification, California is required to submit a Serious area attainment plan that includes a demonstration of attainment of the 2012 annual PM2.5 NAAQS in the South Coast area as expeditiously as practicable and no later than December 31, 2025.
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