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Center for Subsurface Modeling Support (CSMoS)

CSMoS

The Center for Subsurface Modeling Support (CSMoS) provides public domain ground-water and vadose zone modeling software and services to public agencies and private companies throughout the nation. CSMoS is located in Ada, Oklahoma at the National Risk Management Research Laboratory (NRMRL), the U.S. EPA's Center for Ground-Water Research. The primary aims of CSMoS are to provide direct technical support to EPA and State decision makers in subsurface model applications and to manage and support the ground-water models and databases resulting from the research at NRMRL. This research encompasses the transport and fate of contaminants in the subsurface, the development of methodologies for protection and restoration of ground-water quality, and the evaluation of subsurface remedial technologies. As a result, a major focus of CSMoS entails coordinating the use of models for risk assessment, site characterization, remedial activities, wellhead protection, and Geographic Information Systems (GIS) application. In these ways, CSMoS performs an active role in protecting, restoring, and preserving our nation's ground-water resources.

Modeling Services  Back to Top

CSMoS integrates numerous individuals and organizations with expertise in all aspects of the environmental field in its effort to apply models to better understand and resolve ground water problems. CSMoS is supported by the scientists and engineers of the NRMRL whose specialties include hydrogeology, chemistry, soil science, biology, environmental engineering, and computer programming. CSMoS provides assistance in the following modeling areas:

• Conceptualization
• Model Development
• Model Application
• Model Distribution
• Model Training and Education

Technical Assistance   Back to Top

CSMoS is an integral part of the NRMRL's Technology Support Center.CSMoS distributes and services all models and databases developed by the NRMRL and provides general support on model application to ground water and vadose zone problems. Technical assistance activities include developing educational documents, providing training courses, and distributing update notices and other pertinent information for all software developed at NRMRL as well as software developed under laboratory grants and contracts. CSMoS provides direct technical assistance for a broad spectrum of modeling applications. Models and/or databases are available to accomplish the following tasks:

• Site Characterization - chemical and soil characterization databases which provide values for required model input data
• Geostatistics - models which produce statistics and semi-variograms for kriging of site data
• Saturated Zone Groundwater Flow and Fate/Transport - two and three-dimensional single phase and multiphase flow models with fate and transport for unconfined and confined aquifers
• Unsaturated Zone Groundwater Flow and Fate/Transport - one-dimensional single and multiphase flow with fate and transport for the vadose zone
• Combined Unsaturated/Saturated Flow and Transport - two and three-dimensional single phase and multiphase flow models with fate and transport for the vadose and saturated zone
• Natural Attenuation - one-dimensional screening models to assess if natural attenuation of fuel hydrocarbons or chlorinated solvents is occurring at a site and a two-dimensional model for predicting the natural attenuation of fuel hydrocarbons at a site.
• Well Head Protection Assessment - models which enable steady state and time related capture zones to be determined for numerous pumping well scenarios in various site settings.

These models can be used to assist in performing site characterization, groundwater flow and transport simulations and selecting groundwater remediation options at RCRA sites, Superfund studies, and also for the determination of Well Head Protection areas.

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