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Exposure Research

Exposure Research: Water

Methods, Models, Tools and Databases

Methods

  • Biological Methods and Manual Development
    EPA's research in stream and source monitoring indicators includes fish, macroinvertebrates, periphyton, zooplankton, functional ecosystem indicators, water and sediment toxicity, and fish tissue contaminants. EPA exposure scientists regularly prepare and update field and laboratory protocol and methods manuals. They also provide technical assistance to EPA regions, program offices and states on the implementation and interpretation of these manuals. This website lists currently available manuals and protocols.
  • ReVA
    EPA's Regional Vulnerability Assessment (ReVA) program is an approach to regional scale, priority-setting assessment by integrating research on human and environmental health, ecorestoration, landscape analysis, regional exposure and process modeling, problem formulation, and ecological risk guidelines.
  • Drinking Water Methods
  • Bacteria Methods
  • Protozoan Methods
  • Coliphage Methods
  • Virus Methods
    (EPA Manual of Methods for Virology) Twelve chapters. The individual chapters were prepared as ASCII text files to be viewed/printed with a monospaced font. It is planned to make them also available in PDF format in the future. The manual (EPA 600-4-84-013) describes in detail procedures for detecting viruses in environmental samples.

Models

  • ReVA
    EPA's Regional Vulnerability Assessment (ReVA) program is an approach to regional scale, priority-setting assessment by integrating research on human and environmental health, ecorestoration, landscape analysis, regional exposure and process modeling, problem formulation, and ecological risk guidelines.
  • Wellhead Analytic Element Model (WhAEM)
    WhAEM2000 is a public domain and open source ground-water flow modeling system, with strengths in representing regional flow systems, and ground water/surface water interactions. The system provides an interactive computer environment for designing wellhead protection areas based on radius methods, well in uniform flow solutions, and geohydrologic modeling methods.
  • Bioaccumulation in Aquatic Systems Simulator (BASS)
    BASS is a model that simulates population and bioaccumulation dynamics of age-structured fish communities. While BASS was designed to investigate bioaccumulation of chemicals within community or ecosystem contexts, it also allows EPA to evaluate various dimensions of fish health associated with non-chemical stressors. Accurate bioaccumulation estimates help predict realistic dietary exposures to humans and fish-eating wildlife

Tools

  • Virtual Beach (VB)
    When recreational waters are contaminated by bacteria and other microorganisms, beach managers need to act quickly to protect public health. EPA scientists developed Virtual Beach, a software suite that uses data on beach location, local hydrology, land use, wave height, and weather to create models that can predict bacteria and other waterborne pathogen outbreaks at saltwater and freshwater beaches before they happen. Using Virtual Beach, beach managers can issue same-day beach closures or health advisories to protect the health of swimmers and the surrounding community.
  • Supercomputer for Model Uncertainty and Sensitivity Evaluation (SuperMUSE)
    EPA’s Supercomputer for Model Uncertainty and Sensitivity Evaluation, or SuperMUSE, enhances quality assurance in environmental models and applications. Uncertainty analysis (UA) and sensitivity analysis (SA) remain critical, though often overlooked steps in the development and evaluation of computer models. As a result of the SuperMUSE hardware and software technology, EPA can now better investigate new and existing UA and SA methods. EPA can also more easily achieve UA/SA of complex, Windows-based environmental models, allowing scientists to conduct analyses that have, to date, been impractical to consider.
  • Watershed Deposition Mapping Tool
    The Watershed Deposition Tool (WDT) was developed by EPA to provide an easy to use tool for mapping the deposition estimates from CMAQ to watersheds to provide the linkage of air and water needed for TMDL (Total Maximum Daily Load) and related nonpoint-source watershed analyses.
  • Watershed Health Assessment Tools Investigating Fisheries (WHATIF)
    WHATIF is software that integrates a number of calculators, tools, and models for assessing the health of watersheds and streams with an emphasis on fish communities. The toolset consists of hydrologic and stream geometry calculators, a fish assemblage predictor, a fish habitat suitability calculator, macro-invertebrate biodiversity calculators, and a process-based model to predict biomass dynamics of stream biota. WHATIF also supports screening analyses, such as prioritizing areas for restoration and comparing alternative watershed and habitat management scenarios.
  • ReVA
    EPA's Regional Vulnerability Assessment (ReVA) program is an approach to regional scale, priority-setting assessment by integrating research on human and environmental health, ecorestoration, landscape analysis, regional exposure and process modeling, problem formulation, and ecological risk guidelines.
  • ReVA Tools and Projects
    EPA's Regional Vulnerability Assessment (ReVA) program is designed to create the methods needed to understand a region's environmental quality and its spatial pattern. Impacts of human activities are not uniformly distributed across landscapes and regions (defined here as a multi-state area) and are often interacting in complex ways.
  • ReVA - Environmental Decision Toolkits under development
  • Ubertool: Ecological Risk Web Application for Pesticide Modeling
    EPA scientists have developed a prototype cloud computing-base knowledge management system to support ecological risk decisions mandated under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Endangered Species Act.  The “Ubertool” dashboard infrastructure integrates the processing of model results for over a dozen commonly-used EPA aquatic and terrestrial regulatory models and supporting datasets.
  • HSPF Toolkit for BMP Modeling Applications (FTABLE)
    The Hydrological Simulation Program - FORTRAN (HSPF) Toolkit is a comprehensive package for simulation of watershed hydrology and water quality for both conventional and toxic organic pollutants. HSPF incorporates watershed-scale agricultural runoff management models and nonpoint source models into a basin-scale analysis framework that includes fate and transport in one dimensional stream channels. It is the only comprehensive model of watershed hydrology and water quality that allows integrated simulation of land and soil contaminant runoff processes with in-stream hydraulic and sediment-chemical interactions.
  • Exposure Analysis Modeling System (EXAMS)
    EXAMS is a modeling system that supports development of aquatic ecosystem models for rapid evaluation of the fate, transport, and exposure concentrations of synthetic organic chemicals like pesticides, industrial materials, and leachates from disposal sites. The system is able to generate and summarize data critical for ecological risk assessments. Much of the data required for EXAMS to function has been collected historically. This allows data needs to be met for a certain projects without intensive field sampling.

Databases

  • Watershed Deposition Tool Data
  • Environmental Geophysics
    This website beta version contains information on geophysical methods, references to geophysical citations, and a glossary of geophysical terms related to environmental applications.
  • PPCP (Reference Databases)
    Published Literature Relevant to the Issues Surrounding PPCPs as Environmental Contaminants
  • Landscape Ecology Data Browsers
  • HELP
    A quasi-two-dimensional modeling program that simulates water movement into and out of landfills based on a waste management system=s particular design. The user can conduct water-balance analyses of solid waste disposal and containment facilities.
  • MULTIMED
    A one-dimensional, steady-state model used to predict the concentration of contaminants migrating from a waste disposal facility via the subsurface, surface water, and air pathways to receptor sites.
  • VLEACH
    A one-dimensional, finite difference model for making preliminary assessments of the effects on ground water from the leaching of volatile, sorbed contaminants through the vadose zoneCThe program models four main processes: liquid-phase advection, solid-phase sorption, vapor-phase diffusion, and three-phase equilibration.
  • WhAEM2000
    WhAEM2000 is a public domain and open source general purpose ground-water flow modeling system, with strengths in representing regional flow systems, and ground water/surface water interactions. Read the WhAEM Abstract.
  • WHPA
    A semi-analytical ground-water flow simulation program used for delineating capture zones in a wellhead protection area. The program consists of four computational modules (RESSQC, MWCAP, GPTRAC, MONTEC).
  • VFRDB
    The Landscape Characterization Branch within the Office of Research and Development has developed the Neuse River Basin "Virtual Field Reference Data Base (VFRDB)" for the purpose of providing in situ reference measurement data for statistically rigorous accuracy assessments of land-cover maps derived from satellite and airborne remote sensing platforms.
  • ReVA Data
    ReVA uses EPA's Environmental Information Management System (EIMS) to manage its library of projects, data sets, models, and documents. The EIMS database is a comprehensive resource for persons interested in environmental information. By accessing EIMS, you will be able to browse and review ReVA's current data, meetings, projects, and documents.
  • ReVA - Environmental Decision Toolkits under development

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