Reporting and recordkeeping requirements

National Emission Standards for Hazardous Air Pollutants: Carbon Black Production Residual Risk and Technology Review and Carbon Black Production Area Sources Technology Review

The U.S. Environmental Protection Agency (EPA) is proposing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Carbon Black Production major source category. The proposal addresses the results of the residual risk and technology review (RTR) for this source category as required under the Clean Air Act (CAA). The proposed amendments address hazardous air pollutant (HAP) emissions that occur after the main unit filter of a carbon black production unit, as well as emissions from boilers and process heaters.

Publication Date: 
Thursday, January 14, 2021 - 4:00am

Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements; Western Nevada County, California

The Environmental Protection Agency (EPA) is proposing to approve, or conditionally approve, all or portions of a state implementation plan (SIP) revision submitted by the State of California to meet Clean Air Act (CAA or ``Act'') requirements for the 2008 8-hour ozone national ambient air quality standards (NAAQS or ``standards'') in the Nevada County (Western part), California ozone nonattainment area (``Western Nevada County'').

Publication Date: 
Tuesday, January 12, 2021 - 4:00am

National Emission Standards for Hazardous Air Pollutants: Flexible Polyurethane Foam Fabrication Operations Residual Risk and Technology Review and Flexible Polyurethane Foam Production and Fabrication Area Source Technology Review

This action presents the proposed results of the U.S. Environmental Protection Agency's (EPA's) residual risk and technology review (RTR) required under the Clean Air Act (CAA) for the National Emission Standards for Hazardous Air Pollutants (NESHAP) for major source Flexible Polyurethane Foam Fabrication Operations, initially promulgated in 2003.

Publication Date: 
Monday, January 11, 2021 - 4:00am

National Emission Standards for Hazardous Air Pollutants: Mercury Cell Chlor-Alkali Plants Residual Risk and Technology Review

The U.S. Environmental Protection Agency (EPA) is proposing the results of the residual risk and technology review (RTR) of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for mercury emissions from Mercury Cell Chlor-Alkali Plants, as required by the Clean Air Act (CAA).

Publication Date: 
Friday, January 8, 2021 - 4:00am

Partial Approval and Partial Disapproval of Air Quality Implementation Plans; Arizona; West Pinal County; 1987 PM10

The Environmental Protection Agency (EPA) is proposing to approve in part and to disapprove in part the state implementation plan (SIP) revision submitted by the State of Arizona to meet Clean Air Act (CAA or ``Act'') requirements for the 1987 PM<INF>10</INF> national ambient air quality standards (NAAQS or ``standard'') in the West Pinal County PM<INF>10</INF> nonattainment area.

Publication Date: 
Friday, January 8, 2021 - 4:00am

National Emission Standards for Hazardous Air Pollutants: Primary Magnesium Refining Residual Risk and Technology Review

This proposal presents the results of the U.S. Environmental Protection Agency's (EPA's) residual risk and technology review (RTR) for the National Emission Standards for the Hazardous Air Pollutants (NESHAP) for Primary Magnesium Refining, as required under the Clean Air Act (CAA). Based on the results of the risk review, the EPA is proposing that risks from emissions of air toxics from this source category are acceptable and that after removing the exemptions for startup, shutdown, and malfunction (SSM), the NESHAP provides an ample margin of safety.

Publication Date: 
Friday, January 8, 2021 - 4:00am

Air Plan Partial Approval, Partial Disapproval, and Partial Conditional Approval; Arizona; Maricopa County Air Quality Department; Reasonably Available Control Technology State Implementation Plan and Surface Coating Rule

The Environmental Protection Agency (EPA) is finalizing a partial approval, partial disapproval, and partial conditional approval of revisions to the Maricopa County Air Quality Department (MCAQD or County) portion of the Arizona State Implementation Plan (SIP). This action concerns the County's demonstration regarding reasonably available control technology (RACT) requirements and negative declarations for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS or ``standards'') in the portion of the Phoenix-Mesa ozone nonattainment area under the jurisdiction of the MCAQD.

Publication Date: 
Thursday, January 7, 2021 - 4:00am

Strengthening Transparency in Pivotal Science Underlying Significant Regulatory Actions and Influential Scientific Information

This action establishes how the Environmental Protection Agency (EPA) will consider the availability of dose-response data underlying pivotal science used in its significant regulatory actions and influential scientific information.

Publication Date: 
Wednesday, January 6, 2021 - 4:00am

Increasing Consistency and Transparency in Considering Benefits and Costs in the Clean Air Act Rulemaking Process

This rule establishes processes that the Environmental Protection Agency (EPA) will be required to undertake in promulgating regulations under the Clean Air Act (CAA) to ensure that information regarding the benefits and costs of regulatory decisions is provided and considered in a consistent and transparent manner. The EPA is establishing procedural requirements governing the preparation, development, presentation, and consideration of benefit-cost analyses (BCA), including risk assessments used in the BCA, for significant rulemakings conducted under the CAA.

Publication Date: 
Wednesday, December 23, 2020 - 4:00am

Air Plan Approval; Arizona; Stationary Sources; New Source Review Updates

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Arizona Department of Environmental Quality's (ADEQ) portion of the Arizona State Implementation Plan (SIP). These revisions are primarily intended to make corrections to the ADEQ's SIP- approved rules for the issuance of New Source Review (NSR) permits for stationary sources under the Clean Air Act (CAA or Act). This proposed action will update the ADEQ's NSR rules in the SIP and correct the remaining deficiencies in the ADEQ's NSR program that we identified in final EPA rulemaking actions in 2015 and 2016.

Publication Date: 
Wednesday, December 23, 2020 - 4:00am

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