Science & Technology
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Assessing Human Health Risk from Pesticides
EPA protects human health and the environment by evaluating the risk associated with pesticides before allowing them to be used in the United States. Learn about the tools and processes used in risk assessment for pesticides.
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Voluntary School and Child Care Lead Testing and Reduction Grant Program Summary Data
3Ts - Lead Testing in Schools and Child Cares - Program Summary Dashboard
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EPA's Office of Inspector General
The Office of Inspector General is an independent office within EPA that helps the agency protect the environment in a more efficient and cost effective manner.
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Report: Audit of the EPA's Management of its High-Value Asset Program
Report: Audit of the EPA’s Fiscal Year 2025 Compliance with the Payment Integrity Information Act of 2019
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Water Utility Resources for the COVID-19 Pandemic
Discover resources for water utilities related to the COVID-19 Pandemic.
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PEST
PEST (Parameter ESTimation) software. PEST is a model-independent parameter estimation package which can communicate with any model through the model's own input and output files. Apr. 2003
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Regional Streamflow Duration Assessment Methods
Regional SDAMs for the United States classify streams as perennial, intermittent, or ephemeral at the stream reach scale. Learn about SDAMs, their development, and how to apply these field methods using the web application
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BCP Ingredients Inc. Facility in Verona, Missouri
Addressing ethylene oxide is a priority for EPA, which is reviewing its current air regulations that limit the amount of EtO certain types of industries release to determine whether legal standards for EtO emissions to the air should be strengthened.
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2022-2023 Diesel Emissions Reduction Act (DERA) National Grants - Closed Announcement FY 23
EPA’s Office of Air Quality Planning & Standards is soliciting applications from eligible entities to compete for financial assistance through the Targeted Airshed Grant Program.
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Wetland Creation and Restoration: The Status of the Science Vol. II
Wetland Creation and Restoration: The Status of the Science Vol. II
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Draft Scientific Report Connectivity of Streams and Wetlands to Downstream Waters: A Review and Synthesis of the Scientific Evidence
Synthesizes peer-reviewed scientific literature on the biological, chemical, and hydrologic connectivity of waters and the effects that small streams, wetlands, and open waters have on larger downstream waters such as rivers, lakes, estuaries, and oceans.
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The Ecological and Hydrological Significance of Ephemeral and Intermittent Streams in the Arid and Semi-arid American Southwest
The report synthesizes current knowledge of the ecology and hydrology of ephemeral and intermittent streams in the Southwest
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Basic Information for EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM)
Contains basic information on the role and origins of the Selected Analytical Methods including the formation of the Homeland Security Laboratory Capacity Work Group and the Environmental Evaluation Analytical Process Roadmap for Homeland Security Events.
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Wetlands Protection and Restoration
Information about wetlands, development of state and tribal programs, funding, monitoring and protecting wetlands, coastal and other types of wetlands
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Anaerobic Digestion (AD)
Inform visitors about the science of AD, the environmental and economic benefits that can be realized through AD projects, and direct visitors to appropriate regulatory information, feasibility tools and technical resources from related EPA programs.
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Selected Analytical Methods for Environmental Remediation and Recovery (SAM) 2022
SAM page provides access to all information provided in EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM), and includes a query function allowing users to search methods by analyte, sample type and instrumentation.
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Research Grants
Supporting high quality research by the nation's leading scientists and engineers to improve EPA's scientific basis for decisions on national environmental issues.
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Total Risk Integrated Methodology (TRIM) Air Pollutants Exposure Model Documentation (TRIM.Expo / APEX, Version 4.5)
The Air Pollutants Exposure model (APEX) is part of EPA’s overall Total Risk Integrated Methodology (TRIM) model framework (EPA, 1999).
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Total Risk Integrated Methodology (TRIM) Air Pollutants Exposure Model Documentation (TRIM.Expo / APEX, Version 4.3)
The Air Pollutants Exposure model (APEX) is part of EPA’s overall Total Risk Integrated Methodology (TRIM) model framework (EPA, 1999).
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Air: Fate, Exposure, and Risk Analysis (FERA)
The technical tools found oun this technical air resources website will assist with efforts to evaluate the health risks and environmental effects associated with exposure to specific air pollutants.