EPA's Actions for Off-Site Waste and Recovery Operations: National Emissions
Standards for Hazardous Air Pollutants (NESHAP): Fact Sheet

Actions

•	On January, 18, 2018, the US. Environmental Protection Agency (EPA) finalized amendments
to the March 18, 2015, Off-Site Waste and Recovery Operations (OSWRO) National Emission
Standards for Hazardous Air Pollutants (NESHAP) to remove the continuous monitoring
requirements for pressure relief devices (PRDs) on containers.

•	This reconsideration final rule will eliminate the continuous monitoring requirements for
PRDs on containers. These containers are already subject to the Container NESHAP
requirements, which are incorporated into the OSWRO NESHAP and require an initial and
subsequent yearly inspection.

•	This final rule will save the industry $28 million in capital costs and an additional $4.2 million
annually.

Background

•	On March 18, 2015, the EPA finalized the residual risk and technology review (RTR) for the
OSWRO NESHAP.

•	On May 18, 2015, Eastman Chemical Company and American Chemistry Council (ACC) filed
a joint petition for reconsideration regarding equipment leak provisions for connectors and
the requirement to monitor PRDs on containers.

o On February 8, 2016, the EPA granted reconsideration of the requirement to monitor
PRDs on containers.

o On May 5, 2016, the EPA denied the petition for reconsideration regarding
equipment leak provisions for connectors.

•	On May 18, 2015, ACC and Eastman Chemical also both filed petitions for judicial review of
the OSWRO NESHAP RTR challenging numerous provisions in the final rule, including the
issues identified in the petition for administrative reconsideration.

o On September 26, 2016, Eastman filed an unopposed motion for voluntary dismissal
from this action.

•	In October 2016, ACC and Environmental Technology Council (ETC) provided the EPA with
data related to their stationary, process PRDs and PRDs on containers for 17 facilities owned
by eight companies. The data covered calendar years 2013 - 2015 and included PRD release
information, such as the number of relief events and the quantity of emissions from those
events, as well as PRD release monitoring methods, control methods and the perceived
effectiveness of these methods. Other data were also provided about the costs to control
PRD releases, impacts of major storms or other force majeure events, types of root cause

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analyses, inspection frequency, average length of time containers remain on-site and
regulations that currently apply to PRDs. The data provided to the EPA by ACC and ETC are
available to view publicly in the docket at https://www.regulations.gov/docket?D=EPA-HQ-
QAR-2012-0360.

•	On December 19, 2016, the EPA issued a Federal Register notice of proposed settlement
agreement, resolving the judicial petition litigation. On June 15, 2017, the EPA and ACC
finalized the settlement agreement. This agreement specifies that if EPA signs a proposal
reconsidering certain PRD requirements by July 27, 2017, and signs a final rule by January
18, 2018, then ACC will dismiss their judicial petition for review.

•	The OSWRO NESHAP already includes monitoring and inspection requirements for
containers and their closure devices (which include PRDs) by incorporating the
requirements of the Container NESHAP (40 CFR part 63, subpart PP). These container
monitoring and inspection requirements remain in effect. Furthermore, the data provided
by ACC and ETC show that releases from containers are rare and the emissions potential
from PRDs on these containers is low. For these reasons, the EPA removing the additional
continuous monitoring requirements for PRDs on containers in the March 2015 OSWRO
NESHAP because they are unnecessary.

For More Information

• To read the final rules, including additional fact sheets, visit:

https://www.epa.gov/stationarv-sources-air-pollution/site-waste-and-recovery-
operations-oswro-national-emission.


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