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USEPA. 2021b. “2019 AirToxScreen Emissions.” United States Environmental Protection Agency. https://www.epa.gov/AirToxScreen/2019-airtoxscreen-assessment-results#emissions.
USEPA. 2021c. Effect of Canister Type on Background Ethylene Oxide Concentrations. Research Triangle Park, NC: US Environmental Protection Agency. https://www.epa.gov/sites/default/files/2021-05/documents/ord-eto-canister-background-memo-05072021.pdf
USEPA. 2021d. “EPA Administrator Determination Extends TRI Reporting Requirements to Certain Contract Sterilization Facilities; Notice of Availability.” US Environmental Protection Agency. https://www.federalregister.gov/documents/2021/12/28/2021-28067/epa-administrator-determination-extends-tri-reporting-requirements-to-certain-contract-sterilization.
USEPA. 2021e. EPA Should Conduct New Residual Risk and Technology Reviews for Chloroprene and Ethylene Oxide-Emitting Source Categories to Protect Human Health. US Environmental Protection Agency, Office of the Inspector General. https://www.epaoig.gov/reports/audit/epa-should-conduct-new-residual-risk-and-technology-reviews-chloroprene-and-ethylene
USEPA. 2021f. EPA’s Work to Understand Background Levels of Ethylene Oxide. United States Environmental Protection Agency. https://www.epa.gov/hazardous-air-pollutants-ethylene-oxide/epas-work-understand-background-levels-ethylene-oxide
USEPA. 2021g. Ethylene Oxide Measurements by TO-15 Method. https://www.epa.gov/sites/default/files/2021-03/documents/eto-method-for-natts-labs-2019.pdf
USEPA. 2021h. Ethylene Oxide Measurements: Method TO-15/TO-15A Overview, Challenges, Resources and Next Steps. https://www.epa.gov/sites/default/files/2021-05/documents/eto-technical-webinar-041521-w-qandas.pdf
USEPA. 2021i. Technical Note: The Ethylene Oxide (EtO) Canister Effect. US Enironmental Protection Agency, Office of Air Quality Planning and Standards, Air Quality Assessment Division, Ambient Air Monitoring Group. https://www.epa.gov/sites/default/files/2021-05/documents/technical-note-on-eto-canister-effect-052521.pdf
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USEPA. 2022c. “Biogenic Emission Sources.” United States Environmental Protection Agency. https://www.epa.gov/air-emissions-modeling/biogenic-emission-sources.
USEPA. 2022d. Consolidated List of Chemicals Subject to the Emergency Planning and Community Right-To-Know Act (EPCRA), Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), and Section 112(r) of the Clean Air Act (CAA). United States Environmental Protection Agency. https://www.epa.gov/system/files/documents/2022-12/List_of_Lists_Compiled_December%202022.pdf
USEPA. 2022e. “EJ in Air Permitting – Principles for Addressing Environmental Justice Concerns in Air Permitting.” US Environmental Protection Agency. https://www.epa.gov/caa-permitting/ej-air-permitting-principles-addressing-environmental-justice-concerns-air.
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