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EPA/OAR RIN: 2060-AV41 Publication ID: Fall 2023 
Title: Revisions to the Air Emission Reporting Requirements (AERR) 

On August 8, 2023 (88 FR 54118), the EPA proposed new requirements to improve the quality and completeness of HAP emissions data from stationary sources and all pollutant emissions from prescribed fires. Specifically, the EPA is proposing to require certain sources report information regarding emission of hazardous air pollutants (HAP); certain sources to report criteria air pollutants, their precursors and HAP; and to require State, local, and certain tribal air agencies to report prescribed fire data. Further, EPA is considering how best to quantify emissions from intermittent sources such as backup generators; how to obtain data from permitted facilities in Indian Country when a Tribe is not required to report emissions data; and how to address known data gaps, streamline processes, and improve data quality, documentation, and transparency for nonpoint and mobile sources. The proposed revisions also include changes for reporting data on airports, rail yards, commercial marine vessels, locomotives, and nonpoint sources. This proposed action would allow for EPA to annually collect (starting in 2027), hazardous air pollutant (HAP) emissions data for point sources in addition to continuing the criteria air pollutant and precursor (CAP) collection in place under the existing AERR. The proposed amendments would ensure that EPA has sufficient information to identify and solve air quality and exposure problems and ensure that communities have the data needed to understand significant environmental risks that may be impacting them.

Agency: Environmental Protection Agency(EPA)  Priority: Section 3(f)(1) Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: No 
CFR Citation: 40 CFR 51   
Legal Authority: 42 U.S.C. 7401 et seq. Clean Air Act   
Legal Deadline:  None

Statement of Need:

Since 2015, many aspects of emissions data collection and use have evolved. The EPA has continued to review hazardous air pollutant (HAP) emissions levels and associated public health risk through the Residual Risk and Technology (RTR) program, which in many cases has required Information Collection Requests (ICRs) under Section 114 of the Act. Such collection efforts have proven very time consuming and limited EPA’s ability to act quickly. Furthermore, as the EPA gains insight into the risks posed by certain chemicals, such as Ethylene Oxide, we have found ourselves limited by the data available on emissions sources. New compounds continue to be identified as public health threats, such as per- and polyfluoroalkyl substances (PFAS), which may be listed as HAPs in the future. Currently, States are required to report the emissions from sources in their state to EPA. In practice, that has meant emissions are reported only for facilities permitted at the state level. Facilities permitted at the federal level technically do not fall under the reporting requirements, and consequently, some never report emissions to the EPA, which does not allow for proper EPA and state program implementation. Requiring HAPs for point sources is essential to addressing continued public health risks and environmental justice issues.

Summary of the Legal Basis:

Section 114(a)(1) of the CAA authorizes the Administrator to, among other things, require certain persons (explained below) on a one-time, periodic, or continuous basis to keep records, make reports, undertake monitoring, sample emissions, or provide such other information as the Administrator may reasonably require. The EPA may require this information of any person who (i) owns or operates an emission source, (ii) manufactures control or process equipment, (iii) the Administrator believes may have information necessary for the purposes set forth in CAA section 114, or (iv) is subject to any requirement of the Act (except for manufacturers subject to certain Title II requirements). The information may be required for the purposes of developing an implementation plan, an emission standard under sections 111, 112, or 129, determining if any person is in violation of any standard or requirement of an implementation plan or emissions standard, or ‘‘carrying out any provision’ of the Act (except for a provision of Title II with respect to manufacturers of new motor vehicles or new motor vehicle engines).


The EPA is also proposing options and alternatives for consideration that may allow the States to report for owners/operators of regulated facilities.

Anticipated Costs and Benefits:

This action has an associated Regulatory Impact Analysis (RIA), which describes the anticipated costs and benefits of this proposed action. The RIA is summarized in this action and provided in the docket for this action. This action’s total cost impact is estimated at $117.4 million on average annually from 2024 to 2026, and then is estimated at $477.9 million in 2027. All of these costs are in 2021 dollars. The increase in costs for owners and operators of affected sources in 2027 reflects full implementation of the proposed rule if finalized for the entire population of affected sources.


No risks are associated with this action as these are proposed reporting requirements.

Action Date FR Cite
NPRM  08/09/2023  88 FR 54118   
NPRM Comment Period Extended  09/14/2023  88 FR 63046   
NPRM Comment Period End  10/18/2023 
Final Rule  07/00/2024 
Additional Information: EPA-HQ-OAR-2004-0489.
Regulatory Flexibility Analysis Required: Yes  Government Levels Affected: Local, State, Tribal 
Small Entities Affected: Businesses, Governmental Jurisdictions  Federalism: No 
Included in the Regulatory Plan: Yes 
RIN Data Printed in the FR: Yes 
Agency Contact:
Marc Houyoux
Environmental Protection Agency
Office of Air and Radiation
Research Triangle Park, NC 27711
Phone:919 541-3649
Fax:919 541-0684