FACT SHEET
Proposed Amendments to Air Toxics Standards for Miscellaneous Coating Manufacturing
ACTION
•	On August 15, 2019, the U.S. Environmental Protection Agency (EPA) proposed to
amend the 2003 National Emission Standards for Hazardous Air Pollutants (NESHAP) for
Miscellaneous Coating Manufacturing.
•	EPA is proposing minor amendments to enhance the effectiveness of the rule by
improving compliance and implementation.
•	EPA issued the air toxics standards for the Miscellaneous Coating Manufacturing source
category in 2003. The rule applies to major source facilities engaged in the
manufacturing of paints, inks, and adhesives and specifically applies to emission units
such as process vents, storage vessels, equipment components, and wastewater and
heat exchange systems.
•	Following a residual risk and technology review (RTR) conducted under the Clean Air Act
(CAA), with this action EPA is proposing to:
o Revise requirements for periods of startup, shutdown, and malfunction (SSM) to
be consistent with recent court decisions;
o Require electronic reporting of performance test results; and
o Require periodic performance testing every five years for facilities using add-on
controls to demonstrate compliance with the NESHAP.
•	EPA will accept comment on the proposed amendments for 45 days after publication in
the Federal Register.
RESIDUAL RISK ASSESSMENT
•	The CAA requires EPA to assess the risk remaining after application of the final air toxics
emissions standard. This is known as a residual risk assessment.
•	Based on the completed risk assessment, available health information and associated
uncertainties, EPA determined risks from the Miscellaneous Coating Manufacturing
source category are acceptable and provide an ample margin of safety to protect public
health.
•	EPA estimates the maximum individual cancer risk for inhalation to be 6-in-l million.
TECHNOLOGY REVIEW
•	The CAA requires EPA to assess, review, and revise air toxics standards, as necessary,
taking into account developments in practices, processes, and control technologies
since the standards were first issued.
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•	The technology review of the standards for Miscellaneous Coating Manufacturing
facilities did not identify any developments that would further reduce HAP emissions
beyond the original NESHAP.
BACKGROUND
•	The CAA requires EPA to regulate toxic air pollutants, also known as air toxics, from
categories of industrial facilities in two phases.
•	The first phase is "technology-based," where EPA develops standards for controlling the
emissions of air toxics from sources in an industry group (or "source category"). These
maximum achievable control technology (MACT) standards are based on emission levels
that are already being achieved by the best-controlled and lower-emitting sources in an
industry.
•	Within eight years of setting the MACT standards, the CAA directs EPA to assess the
remaining health risks from each source category to determine whether the MACT
standards protect public health with an ample margin of safety and protect against
adverse environmental effects. This second phase is a "risk-based" approach called
residual risk. Here, EPA must determine whether more health-protective standards are
necessary.
•	Also, every eight years after setting MACT standards, the CAA requires EPA to review
and revise the standards, if necessary, to account for improvements in air pollution
controls and/or prevention.
HOW TO COMMENT
•	EPA will accept comment on the proposal for 45 days after publication in the Federal
Register. Comments, identified by Docket ID No. EPA-HQ-OAR-2018-0747, may be
submitted by one of the following methods:
o Go to www.regulations.gov and follow the online instructions for submitting
comments.
o Send comments by email to: a-and-r-Docket@epa.gov, Attention Docket ID No.
EPA-HQ-OAR-2018-0747.
o Fax your comments to: (202) 566-9744, Attention Docket ID. No. EPA-HQ-OAR-
2018-0747.
o Mail your comments to: EPA Docket Center, Environmental Protection Agency,
Mail Code: 28221T, 1200 Pennsylvania Ave., NW, Washington, DC 20460,
Attention Docket ID. No. EPA-HQ-OAR-2018-0747.
o Deliver comments in person to: EPA Docket Center, 1301 Constitution Ave., NW,
Room 3334, Washington, DC. Note: In person deliveries (including courier
deliveries) are only accepted during the Docket's normal hours of operation.
Special arrangements should be made for deliveries of boxed information.
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FOR MORE INFORMATION
•	Interested parties can download a copy of the proposed rule notice from EPA's website
at the following address: https://www.epa.gov/stationary-sources-air-
pollution/miscellaneous-coating-manufacturing-national-emission-standards.
•	Today's action and other background information are also available either electronically
at https://www.regulations.gov. EPA's electronic public docket and comment system, or
in hardcopy at the EPA Docket Center's Public Reading Room.
o The Public Reading Room is located at EPA Headquarters Library, room number
3334 in the EPA WJC West Building, 1301 Constitution Ave., NW, Washington,
DC. Hours of operation are 8:30 a.m. to 4:30 p.m. Eastern Standard Time,
Monday through Friday, excluding Federal holidays.
o Visitors are required to show photographic identification, pass through a metal
detector and sign the EPA visitor log. All visitor materials will be processed
through an X-ray machine as well. Visitors will be provided a badge that must be
visible at all times.
o Materials for this proposed action can be accessed using Docket ID No. EPA-HQ-
OAR-2018-0747.
•	For further technical information about the rule, contact Angie Carey, EPA's Office of Air
Quality Planning and Standards, at (919) 541-2187 or carey.angela@epa.gov.
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