Science & Technology
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Visual Environment for Rich Data Interpretation (VERDI) program for environmental modeling systems
VERDI is a flexible, modular, Java-based program used for visualizing multivariate gridded meteorology, emissions and air quality modeling data created by environmental modeling systems such as the CMAQ model and WRF.
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Draft AP-42 Chapter 9, Section 4 - Livestock and Poultry Feed Operations and Air Emissions Estimating Methodologies for Animal Feeding Operations
Reports analyzing the potential for the generation of air pollution at animal farms
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Community Health Vulnerability Index Provides Public Health Tool to Protect Vulnerable Populations from Impaired Air
New tool helps public health officials identify vulnerable populations at risk from wildland fire smoke exposure.
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Research Topics
ORD's work is organized into six research programs that identify the most pressing environmental health research needs with input from Agency offices, partners, and stakeholders.
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Emissions from Coal Mining in India
Information on India international efforts.
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Map of U.S. Coal Mine Methane Current Projects and Potential Opportunities
CMM Opportunities Map
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National Water Reuse Action Plan: Annual Progress Updates
Document download page for Annual Updates on Collaborative Progress, summarizing the accomplishments of the National Water Reuse Action Plan since implementation began in February 2020.
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New Approach Methods Training - 2025 Society of Toxicology Satellite Meeting
NAMs Training at the 2025 SOT Annual Meeting
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Accelerating the Pace of Chemical Risk Assessment (APCRA)
Page describing EPA's role in the APCRA collaborative effort
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Caterpillar Technology—Marine Engine Emissions Upgrade Group Kit #6 (Tier 1 to Tier 2)
This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.
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Caterpillar Technology—Marine Engine Emissions Upgrade Group Kit #5 (EUI to Tier 2)
This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.
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Caterpillar Technology—Marine Engine Emissions Upgrade Group Kit #3 (MUI to Tier 2)
This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.
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Caterpillar Technology—Marine Engine Emissions Upgrade Group Kit #2 (MUI to Tier 1)
This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.
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Caterpillar Technology—Emissions Upgrade Group (model 3406)
This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.
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Aquatic Life Criteria - Carbaryl
Documents pertaining to 2012 Final National Recommended Aquatic Life Ambient Water Quality Criteria for Carbaryl (Freshwater, Estuarine/marine). These documents contain the safe levels of Carbaryl in water that should protect to the majority of species.
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Frequent Questions about the Chesapeake Bay TMDL
This page provides answers to frequent questions regarding the Chesapeake Bay TMDL and its development.
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Natural Gas STAR Program Historical Accomplishments
This page provides historical accomplishments reports for the Natural Gas STAR Program.
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Technical Data and Reports on Particulate Matter (PM) Measurements and SIP Status
EPA collects data from the states and regions on their air quality, including levels of pollutants such as PM, and state implementation plan (SIP) progress. This information is compiled in a database, and used to create reports, trend charts, and maps.
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Response Surface Model (RSM)-based Benefit Per Ton Estimates
The tables below are updated versions of the tables appearing in "The influence of location, source, and emission type in estimates of the human health benefits of reducing a ton of air pollution" (Fann, Fulcher and Hubbell 2009).
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Antimicrobial Testing Methods & Procedures: EQ-03-10
Information about ATMP - SOP Calibration and Maintenance of Weigh Balances - EQ-03-08