Science & Technology
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Developing a Tiered Framework for Extrapolation Modeling
We are developing a tiered framework for extrapolation modeling, to take advantages of recent scientific advances. Learn more about our proposed approach.
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Label Review Manual Chapter 10; Revised Respirator Descriptions for Public Comment
Revised Respirator Descriptions for Public Comment Documents
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EPA Holding Virtual Preparatory Meeting for SACC Review of Draft Documents Related to Cumulative Risk Assessment Under TSCA
EPA Holding Virtual Preparatory Meeting for SACC Review of Draft Documents Related to Cumulative Risk Assessment Under TSCA
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EPA Adds 12 Chemicals to Toxics Release Inventory
Announcing the addition of 12 chemicals to TRI reporting requirements
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Highlights of Key Provisions in the Frank R. Lautenberg Chemical Safety for the 21st Century Act
The new law includes much needed modernizations to TSCA, the only major piece of environmental legislation that had not been updated since it was passed in the fall of 1976.
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Risk Management for Bisphenol A (BPA)
Fact sheet on Benzidine Dyes.
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EPA's Non-CBI Summary Tables for 2015 Company Progress Reports (Final Progress Reports)
EPA's non-CBI summary tables of final progress reports submitted by companies participating in the 2010/2015 PFOA Stewardship Program.
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Dilution Models for Effluent Discharges - Visual Plumes (4th Edition)
Manual for Visual Plumes, a Windows-based mixing zone modeling application simulating single & merging submerged plumes in arbitrarily stratified ambient flow & buoyant surface discharges.
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Environmental Fluid Dynamics Code (EFDC) Reference List
References to EFDC in Referred Journals (as of 4/2006) & Referred Book Chapters and Conference Proceedings (as of 2000), provides partial lists of EFDC Technical Reports & Application Reports
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Environment Fluid Dynamics Code (EFDC) - Download Page
Executable and documentation access, and system requirements information for the Environmental Fluid Dynamics Code (EFDC) multifunctional surface water modeling system software
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WASP Model Examples
Download the files used in the Online Tutorial for WASP8.
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WASP Fact Sheet
This model helps users interpret
and predict water quality responses to natural
phenomena and man-made pollution for various
pollution management decisions. -
WASP7 Download
Contains the WASP Model including the data preprocessor, the kinetic models, graphical post processor, and model documentation. User is encouraged to download the example input files.
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WASP Model Documentation
WASP8 Model documentation for: Water Transport, Sediment Transport, Eutrophication, Macro Algae and Periphyton, Sediment Diagenesis, Water Temperature, pH and Alkalinity, Light
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WASP Model Release Notes
WASP Model Release Notes, enhancements, corrections.
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WASP7 Course
Water Quality Analysis Modeling System Tutorial version 7.0
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WASP Model Tutorials
Contains WASP tutorial videos. WASP Command Line, WASP, Modeling Dissolved Oxygen, Building a Steady State Example, Modeling Nutrients in Rivers, Nutrient Cycles, Interpreting Water Quality Models, Linking with LSPC, WRDB, BASINS, WCS, WASP Network Tool
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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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EFDC Read Me for EPA Version 1.01
The Environmental Fluid Dynamics Code (EFDC) is a multifunctional surface water modeling system, which includes hydrodynamic, sediment-contaminant, and eutrophication components.
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Environmental Fluid Dynamics Code (EFDC) Brochure
On Environmental Fluid Dynamics Code (EFDC), a multifunctional surface water modeling system, which includes hydrodynamic, sediment-contaminant, and eutrophication components.