Science & Technology

This page shows all of the pages at www.epa.gov that are tagged with Science & Technology.

  • Whistleblower Protection Brochure

    Feb 2020 - Whistleblower information for employees of EPA contractors, subcontractors, grantees, subgrantees, or personal services contractors.

  • Is MOVES the best tool for my work?

    See More Frequent Questions about MOVES and Related Models. EPA’s MOtor Vehicle Emission Simulator (MOVES) is a state-of-the-science emission modeling system that estimates emissions for U.S. mobile sources at the national, county, and project level for criteria air pollutants, greenhouse gases, and air toxics. States other than California must use…

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  • Can I Create a Portable Version of MOVES to Use on Multiple Computers?

    See More Frequent Questions about MOVES and Related Models. Yes, you can create a portable version of MOVES. This may be helpful if you need to easily shift your modeling analyses from one computer to another without copying files back and forth. If your organization’s computer policy allows it, you…

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  • How does MOVES Calculate CO2 and CO2 Equivalent Emissions?

    See More Frequent Questions about MOVES and Related Models. MOVES calculates the energy it takes to operate an onroad vehicle based on energy consumption rates as explained in the technical reports Greenhouse Gas and Energy Consumption Rates for Onroad Vehicles MOVES3 (pdf) (November 2020, EPA-420-R-20-015) and Exhaust Emission Rates for…

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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.

  • 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.

  • 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.

  • 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.

  • 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.

  • AQUATOX 3.2 Installation Guide

    Additional details on installation may be found in the aquatox installation guide.

  • 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.

  • BASINS Publications

    Although BASINS has been in use for the past 10 years, there has been limited modeling guidance on its applications for complex environmental problems, such as modeling impacts of hydro modification on water quantity and quality.

  • BASINS Case Study

    EPA developed a case study document for Cottonwood Creek Watershed, Idaho County, Idaho, to demonstrate the use of BASINS in developing a TMDL.

  • BASINS Technical Notes

    EPA has developed several technical notes that provide in depth information on a specific function in BASINS. Technical notes can be used to answer questions users may have, or to provide additional information on the application of features in BASINS.

  • BASINS Climate Assessment Tool Tutorials

    The BASINS Climate Assessment Tool (CAT) provides a flexible set of capabilities for exploring the potential effects of climate change on streamflow and water quality using different watershed models in BASINS.

  • BASINS Tutorials and Training

    A series of lectures and exercises on how to use BASINS for water quality modeling and watershed assessment. The lectures follow sequentially. Companion exercises are provided for users to practice different BASINS water quality modeling techniques.

  • Application of BASINS/HSPF to Data-scarce Watersheds

    Page for Hydrological Simulation Program - FORTRAN, a comprehensive package for simulation of watershed hydrology & water quality for both conventional & toxic organic pollutants.

  • BASINS Core Manual

    BASINS was developed to promote better assessment and integration of point and nonpoint sources in watershed and water quality management.

  • 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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