Science & Technology
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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.
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TRIM Installation Page
An installation program has been developed for TRIM that downloads the TRIM executables, supporting libraries, and documentation.
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The NRC Risk Assessment Paradigm
The NRC Risk Assessment Paradigm
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Dose Response Assessment Tables
Dose Response Assessment Tables
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Total Risk Integrated Methodology (TRIM) Air Pollutants Exposure Model Documentation (TRIM.Expo / APEX, Version 3.x)
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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Dose-Response Assessment for Assessing Health Risks Associated With Exposure to Hazardous Air Pollutants
Tabulated dose-response assessments that the Office of Air Quality Planning and Standards (OAQPS) uses for risk assessments of hazardous air pollutants.
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2023 Air Sensors Quality Assurance Workshop
Landing page for the 2023 Air Sensors QA Workshop
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National Lakes Assessment 2012 Key Findings
Key findings from the 2012 National Lakes Assessment
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National Lakes Assessment 2022 Key Findings
key findings of the national lakes assessment report 2017
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West Coast Estuaries: National Coastal Condition Assessment 2015
NRSA 2013-14 Results for the Coastal Plains ecoregion
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Southeast Coast Estuaries: National Coastal Condition Assessment 2015
NRSA 2013-14 Results for the Coastal Plains ecoregion
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Hydromodification and Habitat Alteration: National Management Measures
This guidance document provides technical assistance to states, territories, tribes, and the public for managing hydromodification activities and reducing associated NPS pollution of surface and ground water. The document describes