Science & Technology
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Chemical Speciation Network - Parameters Reported to the Air Quality System (AQS)
This page includes measurements made in the chemical speciation network
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Chemical Speciation Network (CSN) - General Information
This is the homepage for EPA’s PM2.5 Chemical Speciation Network (CSN). The CSN is an ambient monitoring network comprised of the Speciation Trends Network (STN) and supplemental sites.
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Standard Operating Procedures for the Analysis of Ions in Chemical Speciation Network (CSN) Samples
Standard Operating Procedures (SOP) for the analysis of ions in Chemical Speciation Network (CSN) samples
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Standard Operating Procedures for the Analysis of Carbon in Chemical Speciation Network (CSN) Samples
Quality Assurance Project Plan for CSN
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Standard Operating Procedures for Data Validation and Reporting of Chemical Speciation Network (CSN) Data
Standard Operating Procedures (SOP) for data validation and reporting of Chemical Speciation Network (CSN) data
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Standard Operating Procedures for the Determination of Filter Light Absorption in Chemical Speciation Network (CSN) Samples
Standard Operating Procedures for the Determination of Filter Light Absorption in Chemical Speciation Network (CSN) Samples
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Standard Operating Procedures for the Analysis Chemical Speciation Network (CSN) Samples using X-ray Fluorescence (XRF)
Standard Operating Procedures (SOP) for the analysis Chemical Speciation Network (CSN) samples using XRF
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EPA Regional Contacts for Water Reuse
List of individuals serving as water reuse contacts for their EPA Region.
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Understanding How Environmental Factors Affect Children’s Asthma
Research from the NIEHS/EPA children’s centers has increased understanding of what factors heighten asthma and what can be done to help children maintain a normal quality of life.
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Archives of Fast Facts: U.S. Transportation Sector Greenhouse Gas Emissions
This page contains archives of Fast Facts: U.S. Transportation Sector Greenhouse Gas Emissions.
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EPA Emission Standards for Light-Duty Vehicles and Trucks and Motorcycles
This page contains links to reference information for the Federal Emissions Standards of light-duty vehicles and engines.
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Federal and Nongovernmental Water Reuse Resources
Federal and Nongovernmental Water Reuse Resources
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2018 Science Matters Stories
Read EPA Science Matters stories published in 2018.
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Are BPA Substitutes Any Safer Than BPA?
Bisphenol A, known as “BPA” is an industrial chemical that can result in possible human health effects. Are substitutes any safer?
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EPA Researchers Evaluate Potential Aerosol Treatment Technologies to Reduce Virus in the Air
EPA researchers have been evaluating different types of aerosol treatment technologies that could potentially be used to reduce the amount of virus (or other pathogens) in the air in occupied spaces, for example in an office or school.
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Greenhouse Gases at EPA
This page discusses the two types of greenhouse gas emissions that EPA tracks and works to reduce.
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EPA Releases Updated New Approach Methodologies (NAMs) Work Plan
EPA released an updated New Approach Methods (NAMs) Work Plan to reduce the use of animals and revolutionize chemical testing.
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Mpox: Applying What We Know About Biological Agents to Prepare for Emerging Public Health Threats
EPA researchers have been studying the persistence of biological agents, including pox viruses, under various conditions for over a decade. Now it is being applied to help reduce the spread of the monkeypox virus.
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Where is more information available about emissions estimation methods used by the EPA?
For criteria air pollutants and precursors as well as for hazardous air pollutants, the methods are described in the technical support document (TSD) for the latest National Emissions Inventory (NEI) available from the main NEI page . For greenhouse gas emissions, you can find greenhouse gas inventory methods from the…
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Radiological Decontamination – Outdoor Residential Query Results
Selected Outdoor Residential Self-Help Methods