Science & Technology
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What's Changed Between BASINS 4.0 and 4.1?
BASINS 4.1 (released in 2013) provides a number of significant improvements over BASINS 4.0. These improvements increase the functionality and applicability of BASINS.
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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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AQUATOX Setup Guide
The new Guidance in AQUATOX Setup and Application provides a quick start guide to introduce major model features, as well as being a type of "cookbook" to guide basic model setup, calibration, and validation.
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AQUATOX Sustainable and Healthy Communities Research Program Webinar Series
A presentation on AQUATOX was made as part of the Sustainable and Healthy Communities Research Program’s webinar series.
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AQUATOX 3.2 Installation Guide
Additional details on installation may be found in the aquatox installation guide.
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History and Generality of Aquatox
Aquatic fate, toxicology, and ecosystem submodels were coupled to “close the loop,” representing both direct and indirect
effects. the model is also a platform to which other environmental stressors may be added for extensive analysis. -
BASINS Download 4.1
The current version of BASINS 4.1 was released in 2013. This page describes the installation requirements for BASINS 4.1.
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April 24, 2012 LT2 Public Meeting
Meeting announcement and meeting materials for April 24, 2012 Public Meeting: information that may inform the regulatory review of the LT2 Rule uncovered finished water reservoir requirement
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December 7, 2011 LT2 Public Meeting
Describes meeting materials from December 7, 2011 public meeting about LT2 Rule Review
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Exposure Analysis Modeling System (EXAMS): User Manual and System Documentation
Revision G User manual for EXAMS, software for formulating aquatic ecosystem models & evaluating fate, transport, & exposure concentrations of synthetic organic chemicals.
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EXPRESS (EXAMS - PRZM Exposure Simulation Shell)
EXPRESS (EXAMS - PRZM Exposure Simulation Shell) software model-designed to facilitate a rapid and consistent assessment of aquatic pesticide exposure on a variety of crops.
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User Manual for EXPRESS, the EXAMS-PRZM Exposure Simulation Shell
User Guide for EXPRESS 1.03.02. software model-designed to facilitate a rapid and consistent assessment of aquatic pesticide exposure on a variety of crops.
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Meet EPA Ecologist Paul Mayer, Ph.D.
EPA ecologist Paul Mayer, Ph.D. works in EPA's Groundwater and Ecosystem Restoration division where he studies riparian zones (the area along rivers and streams where the habitats are influenced by both the land and water) and stream restoration
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Water Quality Framework
A framework for streamlining water quality assessment and reporting by integrating existing systems.
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Meet EPA Biologist John Cowden, Ph.D.
John Cowden works in the Office of Research and Development’s Center for Computational Toxicology and Exposure. He works with different EPA scientists, lab directors, and research program directors to coordinate research projects.
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Webinar: Innovative and Emerging Landfill Gas Energy Project Types
LMOP webinar on September 14, 2021 about the use of landfill gas for producing hydrogen, methanol and ethanol.
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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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Meet EPA Scientist Beth Owens, Ph.D.
As co-director of one of EPA’s Superfund Technical Support Centers that is focused on human health risk, EPA researcher Beth Owens provides technical support to Superfund sites.
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Risk Evaluation for Vinyl Chloride
EPA designated vinyl chloride as a high priority chemical in December 2023 and the chemical is currently undergoing risk evaluation.
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Risk Evaluation for C.I. Pigment Violet 29
Documents for PV-29