Science & Technology
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Risk Assessment Guidance for Superfund (RAGS): Part E
EPA's Risk Assessment Guidance for Superfund (RAGS) Part E uses a consistent methodology for assessing the exposures from the dermal pathway for Superfund human health risk assessments.
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Dasymetric Toolbox
Dasymetric mapping is a geospatial technique that uses additional information, such as landcover types, to more accurately distribute data that has been assigned to arbitrary boundaries, such as census blocks.
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America's Children and the Environment Data Tables
America's Children and the Environment Data Tables
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CMAQ Models
The Community Multiscale Air Quality (CMAQ) model is a numerical air quality model that relies on scientific first principles to predict the concentration of airborne gases and particles and the deposition of these pollutants back to Earth’s surface.
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Guidance for Preparing Standard Operating Procedures, EPA QA/G-6 from March 2001
Provides guidance on the preparation and use of a standard operating procedure within a quality system.
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Guidance on Assessing Quality Systems EPA GA/G-3
Provides methods and tools for assessing quality systems and provides information about assessments for those who use them
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2018 AirToxScreen
Background information on AirToxScreen
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2017 AirToxScreen: Emissions Update Document
AirToxScreen emissions update document
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2018 AirToxScreen: Emissions Update Document
AirToxScreen emissions update document
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2011 NATA: Explanation of Data Elements
Document describing the data found in the 2011 NATA files
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Computational Toxicology and Exposure APIs: About
About CompTox and Exposure APIs
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Surf Your Watershed
A database of more than 2,600 watershed groups for citizens who want to protect and restore their local watershed.
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Podcast: Following the Money
Podcast: Following the Money. Assistant Inspector General for Investigations Nic Evans discusses an investigation in which EPA OIG special agents helped dismantle a multi-million-dollar fraud network.
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Estuary Data Mapper (EDM) Release History
The Release Notes page summarizes new or changed features/data for each Estuary Data Mapper (EDM) public release.
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Scripting Estuary Data Mapper
Describes how to use Estuary Data Mapper's scripting capability for hands-off running of the application in batch mode.
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EPA, Congressman John Rutherford and City of Jacksonville to Highlight Septic Tank Phase Out Project
EPA, Congressman John Rutherford and City of Jacksonville to Highlight Septic Tank Phase-Out Project
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Multimedia Models
Provides links to simulation models & database software designed to quantify the movement & concentration of contaminants traveling through groundwater, surface water, & food chain media.
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Food Chain Models to Assess Exposures
Information on simulation models & database software designed to determine exposure levels and effects of environmental contaminants on organisms which make up the food chain.
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Surface Water Models
Provides links to simulation models & database software designed to quantify movement and concentration of contaminants in lakes, streams, estuaries, and marine environments.
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Groundwater Models
Provides links to simulation models and database software designed to quantify the movement and concentration of subsurface contaminants.