Answers About Contaminant Transport Modeling with POLLUTE and MIGRATE

POLLUTEv10 and MIGRATEv10 are Windows applications for evaluating contaminant transport through soil, groundwater and engineered barrier systems. They help engineers and hydrogeologists test source, material, hydraulic and design assumptions over time.

POLLUTEv10 uses a 1.5-dimensional analytical formulation suited to predominantly vertical transport through layered systems. MIGRATEv10 explicitly represents vertical and lateral transport within a two-dimensional domain, including multiple source locations, heterogeneous zones and fractured pathways.

Use POLLUTEv10 when the conceptual model can reasonably be represented with its layered 1.5D formulation and rapid scenario evaluation is important. Use MIGRATEv10 when lateral spreading, source location, spatial geometry, heterogeneity or fractures materially affect the engineering decision. The comparison examples show the distinction using matched cases.

Yes. POLLUTE can provide a focused layered screening or design analysis, while MIGRATE can investigate spatial behavior or a more complex conceptual model. Differences between results should be explained in terms of dimensionality, geometry, sources, boundaries and parameter assumptions.

Representative applications include landfill liner design, waste-containment assessment, leachate migration, contaminated-soil and groundwater evaluation, engineered barriers, source-depletion studies, sensitivity analysis and long-term receptor assessment.

• Source location, concentration, mass and release history
• Layer or zone geometry and thickness
• Groundwater gradients, flow conditions and boundary behavior
• Porosity, hydraulic conductivity and moisture conditions
• Diffusion, dispersion, sorption and decay parameters
• Engineered barrier and collection-system properties
• Simulation duration, evaluation locations and receptors

Yes. Applicable model configurations can represent constant, finite-mass or time-varying sources. The selected source history should be consistent with waste characteristics, release mechanisms, available mass and the assessment period.

Yes. Materials can be assigned distinct geometry and transport properties. Layers or zones should be separated when differences in hydraulic conductivity, porosity, diffusion, dispersion, sorption or decay could materially affect the prediction.

Use one documented and internally consistent unit system. Check time, length, concentration, density, hydraulic and mass units before calculation and again when reviewing exported tables or externally derived parameters.

Yes, when the value is applicable to the modeled material, contaminant, temperature, chemistry and test conditions. Record the source, method, units, uncertainty and reason for selection. Test plausible alternatives when the parameter materially influences the result.

Depending on the program and selected formulation, a model can include advection, molecular diffusion, mechanical dispersion, sorption or retardation, radioactive or biological decay, source depletion and transport through layered or spatially variable media.

Yes. The programs support landfill and waste-containment assessments involving primary and composite liners, geomembranes, compacted clay, drainage materials, leachate collection systems and changing source or hydraulic conditions.

Collection-system behavior can be reflected through appropriate hydraulic, leakage and time-dependent assumptions. Where clogging is important, evaluate supported alternative conditions and document how head, leakage and source behavior were changed.

MIGRATEv10 is intended for spatial models where fractures or preferential pathways materially influence vertical and lateral migration. Fracture geometry and transport properties must still be supported by the site conceptual model and available evidence.

Yes, where supported by the selected formulation and project evidence. Avoid treating literature values as universal constants; sorption and decay can depend on mineralogy, organic carbon, chemistry, temperature, redox conditions and concentration.

Results can include concentration versus time or depth, mass behavior and applicable tables. MIGRATE additionally provides spatial views such as concentration versus distance and depth-versus-distance distributions across the 2D domain.

Applicable model data and results can be exported for further review and reporting, including Excel-based workflows. Preserve the model file, software version, input basis and scenario identity with any exported results.

• Confirm geometry, units, sources and boundary conditions
• Compare inputs with supporting project records
• Review mass behavior and numerical stability
• Test influential parameters and conceptual alternatives
• Compare results with field observations where available
• Document version, assumptions, limitations and reviewer actions

Yes. Use the POLLUTE examples, MIGRATE examples and matched comparison examples to examine formulations and expected workflows. The research library provides technical background.

No. The software calculates the consequences of the conceptual model, parameters and boundary conditions selected by the user. Qualified professionals remain responsible for model suitability, parameter support, sensitivity analysis, regulatory applicability and interpretation.

No. Acceptance depends on the jurisdiction, program, conceptual model, data quality, assumptions, sensitivity analysis, documentation and professional review. Confirm current requirements with the applicable authority.

Yes. Use the demo download, feature pages, example libraries and research reports to evaluate the programs with a representative engineering question.

Use the POLLUTE and MIGRATE purchase page for current product and license information. Contact GAEA Technologies when a multi-user configuration must be matched to your organization.

Review the upgrade page for version-specific guidance. Before production use, preserve backups and test representative projects, calculations, templates and reports in the current version.

• The engineering question, source and receptors
• Representative geometry and material layers
• Available hydraulic and transport parameters
• Required scenarios, outputs and regulatory context
• Expected number of users and licensing needs
• Any older-version models that must be migrated

Use the Technical Support contact page. Include the product and version, license type, model step, error text, relevant screenshots and the smallest reproducible model that can be shared through an approved method.