Science & Technology
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Memorandum on use of air sensor data for NAAQS compliance
This is a memorandum that explains the use of air sensors for compliance with the National Ambient Air Quality Standards.
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2020 AirToxScreen National Concentration Summaries
Application with national air toxics summaries
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Energy and the Environment Research
EPA conducts research to examine the costs and benefits of using different mixes of energy technology in the United States and is required by Congress to provide reports on biofuels and potential impacts to the environment.
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Risk Evaluation for 1,1-Dichloroethane
EPA designated 1,1-dichloroethane as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.
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Air Pollution in the Chesapeake Bay Watershed
This page describes how atmospheric deposition adds to the high levels of nitrogen in the Chesapeake Bay. It also provides an overview of the allocations given to atmospheric deposition.
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Technical Support Documents Used to Develop the Chesapeake Bay TMDL
The Chesapeake Bay TMDL development was supported by several technical documents for water quality standards and allocation methodologies specific to the Chesapeake Bay. This page provides the technical support documents.
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Ensuring Results in the Chesapeake Bay
This page shows how EPA is ensuring that progress is made in cleaning up the Chesapeake Bay and local waters.
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Determining if You Are a Manufacturer or Importer Required to Report
These Frequent Questions (FQs) are intended to clarify the reporting requirements for Chemical Data Reporting for the 2016 reporting period.
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Sewage Sludge Analytical Methods and Sampling Procedures
EPA's Office of Science and Technology manages the CWA methods program, working with EPA Regions, states, and stakeholders.
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Risk Assessment of Pollutants in Sewage Sludge
Information on the risk assessment process for determining risk from pollutants found in biosolids.
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EPA New England Example Streamlined QAPP Tables/Template
Examples of tables that may be included in a QAPP to summarize information, supplement and simplify the text, or to create a useful list of important information for the user
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Registration and Agreement for TSCA Section 8(e) Compliance Audit Program
Registration and agreement for TSCA Section 8(e) federal register notification
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Cherokee County National Priorities List (NPL) Superfund Site, Cherokee County, Kansas - Fact Sheet, July 2022
Sitewide Assessment and Site Update; Free Lead Testing Opportunity
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Publications
Access frequent questions, past publications, and technical documentation to find more about the indicators and how they were developed.
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Progress Report - Emissions Reductions
EPA’s Progress Report provides annual updates on program implementation and resulting changes in emissions.
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Testing the Waters: EPA Researchers Study the Changing Nitrogen Landscape in Streams
EPA researchers and collaborators used data from the National Aquatic Resource Survey and the National Nutrient Inventory to analyze streams in the contiguous U.S. and explore the relationship between air quality improvements and stream chemistry.
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Meet EPA Ecologist Jana Compton, Ph.D.
As an ecologist with the Western Ecology Division of EPA’s Office of Research and Development, Dr. Jana Compton investigates the sources and effects of nitrogen pollution.
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EPA Scientists Develop Method for Estimating Recreational Visitors and Value of Cape Cod Estuaries
EPA researchers have developed a new method to study the number of visitors to Cape Cod’s estuaries.
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EPANET 2.2.0: An EPA and Water Community Collaboration
EPANET 2.2.0 provides an updated and expanded open source water distribution system modeling tool to meet the vastly important needs of water utilities and the water community.
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Using New Approaches to Screen Chemicals for Potential Thyroid Effects
With cutting-edge research, the agency is leading the charge to test chemicals for their potential to disrupt the thyroid system. EPA scientists are finding innovative ways to identify hazardous chemicals to protect human health and the environment.