Modeling
Models provide insight into physical and chemical systems. We build simple analytical models to drive science-based environmental decision-making. More sophisticated models are used to predict chemical fate and transport in groundwater or waterways, or via air dispersion. Our model visualizations include web site applications for real-time data presentation.
Groundwater
We use a range of analytical and numerical models to solve complex hydrogeological and geochemical problems. We project subsurface flow and chemical fate and transport, characterize historical and current groundwater flow paths, delineate plumes, and predict future chemical transport. Using robust, numerical modeling platforms, we bring a multidimensional analysis of groundwater flow and chemical transport to various remediation and litigation settings.
Saturated and Unsaturated Groundwater Flow | Multiphase Fluid Systems | Complex Bedrock Geology | Surface–Groundwater Interactions | Flow Systems with Variable Salinity and Temperature
Surface water
We apply our expertise in surface water modeling to predict flows, as well as sediment and contaminant fate and transport. Our analyses support water quality studies, NPDES compliance, allocation, site characterization, and remedial design. No matter what the need, we apply the model to get the job done right. From simple to complex, our models best integrate available data to meet project and client needs.
River and Estuarine Flow | Watershed Runoff | Sediment and Contaminant Fate and Transport | Water Quality | Thermal | Mixing | Compliance
oceanographic
Our site-specific oceanographic models support a wide variety of studies such as sediment and contaminant fate and transport, water quality and ecology, coastal resiliency, and offshore energy assessments. We develop state-of-the-science forecast, nowcast, and hindcast models that provide accurate 3-dimensional site conditions over a variety of spatial and temporal scales. Our oceanographic modelers have successfully completed projects nationwide and overseas in aquatic systems ranging from riverine, lacustrine, and estuarine environments to coastal waters and the deep ocean.
Hydrodynamics | Sediment Transport | Contaminant Fate and Transport | Water Quality | Ecology | Thermal Plumes | Coastal Resiliency | Coastal Adaptation | Offshore Energy | Marine Energy | Acoustics
air
To support compliance and permitting, we model air emissions from stationary and mobile sources, as well as fugitive emissions from soil or water. Using modeling output, we also perform direct (inhalation) and indirect (food chain) risk assessments. We use the regulatory suite of models to develop customized dispersion models for project-specific estimates. We also evaluate exposure and consequences of accidental and non-routine air emissions, and conduct dose reconstruction.
Vapor Intrusion | Air Quality | Dispersion and Deposition | Accidental Releases | Dose Reconstruction | Litigation Support
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