Vocabulary Name	Publishing Organization	Description	Last Update	
(TSG) Clean Energy Glossary	Office of Air and Radiation/Office of Atmospheric Protection/Climate Change Division	This glossary provides definitions of a number of important terms associated with power generation technologies and their environmental impacts, including definitions of specific pollutants, technologies, and the key terms related to the electric power marketplace.	December 28, 2007	
(TSG) Significant New Alternatives Policy (SNAP) Glossary	Office of Air and Radiation/Office of Atmospheric Protection/Stratospheric Protection Division	Glossary of terms to support the SNAP web site	2008	
(TSG) Heat Island Effect Glossary	Office of Air and Radiation	Scientific concepts related to heat island mitigation	February 9, 2009	
(TSG) Mold - Glossary of Terms	Office of Air and Radiation/Office of Radiation and Indoor Air/Indoor Environments Division	Glossary of terms related to mold and moisture	August 2, 2012	
(TSG) Acid Rain Glossary	Office of Air and Radiation/Office of Atmospheric Protection/Clean Air Markets Division	Definitions of key terms pertaining to acid rain	August 14, 2008	
(TSG) Radon Glossary of Terms	Office of Air and Radiation/Office of Radiation and Indoor Air/Indoor Environments Division	Glossary of terms relevant to the topic radon	August 2, 2012	
(TSG) Asbestos Hazard and Emergency Response Act Terms	Region 2	Glossary of terms relevant to the Asbestos Hazard and Emergency Response Act (AHERA)	October 4, 2010	
(TSG) Air Permitting Terms	Region 9/Air Program	Definitions of selected permitting terms	April 14, 2010	
(TSG) Emissions Inventory System Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards	Glossary from the 2008 National Emissions Inventory - Emissions Inventory System Implementation Plan	December 31, 2008	
(TSG) Emissions Standards Reference Guide: Acronyms and Abbreviations	Office of Air and Radiation/Office of Transportation and Air Quality	A glossary of the acronyms and abbreviations used throughout the Federal Emission Standards guide.	September 24, 2009	
Building Air Quality Guide: Glossary and Acronyms	Office of Air and Radiation/Office of Radiation and Indoor Air/Indoor Environments Division	Explains scientific and engineering terminology that may be unfamiliar to some readers of the guide - Building Air Quality: A Guide for Building Owners and Facility Managers (EPA 404-F-91-10).	Decemeber 1991	
(TSG) Improving Air Quality in Your Community Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards	Terms used to support information on improving air quality in your community. Disclaimer: This list of glossary terms was compiled from existing EPA definitions and supplemented, where necessary, by additional terms and definitions. The wording of selected items may have been modified from the original in order to help readers who are new to air pollution control activities to more readily comprehend the underlying concept of the glossary entry. As such, these glossary definitions constitute neither official EPA policy nor preempt or in any way replace any existing legal definition required by statute or regulation.	August 19, 2011	
(TSG) Community-Based Air Pollution Projects Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards	Glossary to support air pollution projects designed to address health and environmental issues at the local level.	August 23, 2011	
(TSG) Acid Rain Students Site: Glossary	Office of Air and Radiation/Office of Atmospheric Programs/Clean Air Markets Division	Definition of terms to help educate students about acid rain.		
(TSG) Basic Concepts in Environmental Sciences Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards	Glossary terms and definitions used in the Basic Concepts in Environmental Sciences Module of the online reference material for Air Pollution Training Institute (APTI).	January 29, 2010	
(TSG) Chain of Custody (COC) Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards	Glossary of terms supporting the APTI Chain of Custody Entry-Level Training		
(TSG) Control Strategy Tool (CoST) Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards	Glossary that defines terms used in the document series for the CoST software.	June 9, 2010	
(TSG) Indoor Air Quality Glossary	Office of Air and Radiation/Office of Radiation and Indoor Air/Indoor Environments Division	Glossary of terms associated with indoor air and indoor air quality.	June 21, 2012	
(TSG) RadNet Glossary	Office of Air and Radiation/Office of Radiation and Indoor Air/Radiation Protection Division	Definition of terms used on the RadNet website.	November 19, 2014	
(TSG) Importing Vehicles and Engines Glossary	Office of Air and Radiation/Office of Transportation and Air Quality/Compliance Division	The definitions of the terms and acronyms used in the process of importing vehicles and engines into the U.S..	May 21, 2013	
(TSG) Radiation Glossary	Office of Air and Radiation/Radiation Protection Division	Defines radiation-related terms	May 22, 2023	
(TSG) RadTown Glossary	Office of Air and Radiation/Office of Radiation and Indoor Air	Radiation-related terms that you may encounter in the RadTown USA fact sheets.	August 4, 2014	
(TSG) I-BEAM Glossary of Terms	Office of Air and Radiation/Office of Radiation and Indoor Air/Indoor Environments Division	Glossary of terms to support the Indoor Air Quality Building Education and Assessment Model.	August 6, 2012	
(TSG) RRNC Glossary of Terms	Office of Air and Radiation/Office of Radiation and Indoor Air/Indoor Environments Division	Glossary of key terms used in radon-resistant new construction.	October 6, 2010	
(TSG) Ozone Layer Protection Glossary	Office of Air and Radiation/Office of Atmospheric Protection/Stratospheric Protection Division	Important terms and acronyms to help understand information about ozone depletion	March 24, 2016	
(TSG) Ports Primer for Communities Glossary	Office of Air and Radiation/Office of Transportation and Air Quality/Transportation and Climate Division	This glossary was developed for the "Ports Primer for Communities, An Overview of Ports Planning and Operations to Support Community Participation". Glossary is courtesy of the American Association of Port Authorities, National Cooperative Freight Research Program, Starcrest Consulting Group and the U.S. Department of Transportation.	August 28, 2019	
(TSG) CMAQ Glossary	Office of Research and Development	Glossary of terms to support the CMAQ model microsite.	March 21, 2017	
(TSG) NAAQS Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards	Glossary of terms to support the NAAQS and Criteria Air Pollutant websites.	April 20, 2017	
(TSG) Health Effects Notebook Glossary	Office of Air and Radiation/Office of Air Quality Planning and Standards/Health and Environmental Impacts Division	Glossary of Health, Exposure, and Risk Assessment Terms and Definitions of Acronyms	March 31, 2021	
(TSG) AirToxScreen Glossary of Terms	Office of Air and Radiation	Glossary of key terms used in AirToxScreen and other risk assessments	March 2, 2022	
(TSG) Glossary for Air Pollution Terms in Particle Pollution and Your Patients' Health	Office of Air and Radiation	Glossary of terms used in particulate matter (PM) and Your Patients' Health.	January 3, 2022	
(TSG) General Conformity Glossary	Office of Air and Radiation	Glossary of terms used throughout the General Conformity Training Module to help understand the regulations.	March 10, 2016	
(TSG) Glossary of Asbestos-related Terms and Acronyms	Office of Land and Emergency Management/Office of Superfund Remediation and Technology Innovation	Terms from the Framework for Investigating Asbestos-Contaminated Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) Sites.	November 2021	
(TSG) Web Taxonomy-Environmental Media Topics	Office of Mission Support/Office of Information Management/Information Access and Analytic Services Division	"Extensible list of topics related to environmental media--air