Science & Technology
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An Approach for Developing Site-Specific Lateral and Vertical Inclusion Zones within which Structures Should be Evaluated for Petroleum Vapor Intrusion due to Releases of Motor Fuel from Underground Storage Tanks
Review a graphical, data-driven approach to screen buildings for vulnerability to petroleum vapor intrusion.
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Modeling Products to Assess Exposures
A complete list of software models, modeling tools, data sets, and documents distributed by the EPA Center for Exposure Assessment Modeling (CEAM).
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BASINS Version History
Better Assessment Science Integrating Point and Nonpoint Sources (BASINS) version history shows the new features and changes to BASINS
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PRZM Version Index
Page on versions of PRZM, a one-dimensional, finite-difference model that accounts for pesticide and nitrogen fate in the crop root zone. PRZM3.12.3 is the most recent version.
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AQUATOX 3.1 Download Page
Contains AQUATOX system requirements and installation information. Download the zipped file. Order documentation.
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AQUATOX 3.2 Download Page
Contains AQUATOX system requirements and installation information. Download the zipped file. Order documentation.
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BASINS Framework and Features
BASINS enables users to efficiently access nationwide environmental databases and local user-specified datasets, apply assessment and planning tools, and run a variety of proven nonpoint loading and water quality models within a single GIS format.
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Wildfire Smoke Air Monitoring Response Technology (WSMART)
The Wildfire Smoke Air Monitoring Response Technology (WSMART) pilot is part of a federal government response to address the growing threat of wildfires and related smoke impacts that are a public health concern in the United States.
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CMAQ: The Community Multiscale Air Quality Modeling System
CMAQ is a computational tool used for air quality management. It models air pollutants including ozone, particulate matter and other air toxics to help determine optimum air quality management scenarios.
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Children Are Not Little Adults!
They are often more likely to be at risk from environmental hazards because of unique activity patterns/behavior, physiological differences, and windows of susceptibility during early lifestages including fetal development and puberty.
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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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Frequent Questions About Hydrologic and Water Quality Models
Frequently Asked Questions on the Center for Exposure Assessment Modeling (CEAM) and its models
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Status of EPA Research and Development on PFAS
Contains the status of various ORD activities related to PFAS research and development
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EPA 2018 International Decontamination Research and Development Conference Proceedings
This site allows users to search for presentations, view descriptions, and Q&A from EPA's International Decontamination Conference.
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Tire Crumb Questions and Answers
Questions and Answers about tire crumbs used in turf fields.
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Metadata Populated Place Locations
Populated Place Point Locations for CONUS, Alaska, and Hawaii in BASINS
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BASINS Metadata
Metadata or "data about data" describes the content, quality, condition, and other characteristics of data. Geospatial metadata are critical to data discovery and serves as the fuel for the Geospatial One-Stop data portal.
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Stakeholder Process for Natural Gas and Petroleum Systems in the 1990-2022 Inventory
This page provides information about stakeholder meetings and webinars on updates under consideration for the 1990-2022 GHG Inventory (to be released in April 2024).
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Environmental Fluid Dynamics Code (EFDC)
Page on EFDC Environmental Fluid Dynamics Code (EFDC) multifunctional surface water modeling system software information, including model abstract & model usage
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Holding Time & Preservation
Holding Time & Preservation, Frequent Questions