Science & Technology

2020 AirToxScreen National Concentration Summaries

Application with national air toxics summaries

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.

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.

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.

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.

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.

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.

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.

Risk Assessment of Pollutants in Sewage Sludge

Information on the risk assessment process for determining risk from pollutants found in biosolids.

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

Registration and Agreement for TSCA Section 8(e) Compliance Audit Program

Registration and agreement for TSCA Section 8(e) federal register notification

Progress Report - Emissions Reductions

EPA’s Progress Report provides annual updates on program implementation and resulting changes in emissions.

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.

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.

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.

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.

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.

Meet EPA Researcher S. Ryan Fulgham, Ph.D.

EPA researcher Dr. Ryan Fulgham focuses on measuring the biosphere-atmosphere exchange of reactive nitrogen and sub-micron particulate matter at Duke Forest in North Carolina.

Helping Communities Manage Electronic Waste

To help understand and improve the flow of used electronics products from consumer markets to the waste or reuse stream, EPA researchers have developed the Alternative Disposition of Electronics Planning Tool, also called ADEPT.

EPA Tool Helps Guide Coastal Communities to Consider Consequences of Complex Environmental Challenges

EPA scientists help community plan for rising sea levels