Science & Technology
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Air Quality Monitoring and Community Science Webinar Archive
This webinar focuses on EPA’s research that is advancing the development and evaluation of air sensor technology and helping communities learn more about their air quality.
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Reports OIG
Audit and Evaluation Reports issued by the Office of General.
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Site Specific National Cleanup Databases
A list of Multi-Program & Single Program databases with information about cleanup sites, providing brief descriptions of each database
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How do the different parts of particulate matter (PM) fit together?
The various parts of PM in the NEI are related as follows. PM10-FIL > PM25-FIL because PM10-FIL includes PM25-FIL PM25-PRI = PM25-FIL + PM-CON This equation only applies at the process level. Because some sources only can report PM2.5 (due to test method differences), this equation does not apply to…
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미국 환경 보호국 - 한국어
Environmental information translated into Korean covers topics including nail salons, dry-cleaning, drinking water, fish consumption, asthma, cleaning and disinfecting foot spa basins, pesticides, and professional fabricare processes.
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Information Quality Complaint; False Greenhouse Gas Emission Reduction Claims Related to Coal Combustion Waste Recycling
Public Employees for Environmental Responsibility (PEER) hereby submits this Information Quality Complaint (Complaint) pursuant to the Data Quality Act of 2000
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August 24, 2004 RFC: Perchlorate Environmental Contamination Toxicological Review and Risk Characterization
Submitted by the Perchlorate Study Group
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How does PM2.5 relate to PM species such as EC, OC, SO4, NO3, PMFINE, and DIESEL-PM25?
Primary PM2.5 estimates are speciated into the five PM species in the NEI: elemental (black) carbon (EC), organic carbon (OC), nitrate (NO3), sulfate (SO4), and the remainder of PM25-PRI (PMFINE). Diesel engine PM25-PRI and PM10 emissions are also labeled as DIESEL-PM25 and DIESEL-PM10 for mobile source diesel engines. For all…
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Data Summaries and Maps - FAQ
NEI Summaries and Maps FAQs
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Sulfur Dioxide Designations - Regulatory Actions
Regulatory actions associated with sulfur dioxide designations
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Mobile Session (2019 EIC)
Presentations/papers given by keynote speakers at the 2019 International Emission Inventory Conference
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Definitions / Measurements - FAQ
Definitions and Measurements FAQs
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U.S. Government’s International Methane Mitigation Activities: 2018 Accomplishments
The U.S. Government’s Global Methane Initiative Accomplishments ANNUAL REPORT (2018)
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Report: Independent Audit of the EPA’s Fiscal Years 2022 and 2021 (Restated) Toxic Substances Control Act Service Fee Fund Financial Statements
Report: Independent Audit of the EPA’s Fiscal Years 2022 and 2021 (Restated) Toxic Substances Control Act Service Fee Fund Financial Statements
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System Documentation and Guidance for Production Volume Reporting
This page provides system documentation and guidance for production volume reporting for heavy-duty engines.
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General Emissions Inventory Information
Contact emails
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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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Partnership to Evaluate Flame Retardant Alternatives to HBCD
The partnership project on alternatives to HBCD was convened to compare human health and environmental impacts of HBCD and its alternatives to inform decision-making
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Bioassessment and Biocriteria Program Status for Maine: Streams and Wadeable Rivers
Biocriteria Program Status of Alabama