BIOSCREEN-AT is a screening-level model that simulates remediation through natural attenuation of dissolved hydrocarbons at petroleum fuel release sites. It is also routinely used for simulating the movement of a wide variety of dissolved solutes in groundwater. The software, programmed in the Microsoft ExcelTM spreadsheet environment, uses the Domenico analytical solute transport model for solute transport in three-dimensional porous media. The Domenico model has the ability to simulate advection, dispersion, adsorption, and aerobic decay as well as anaerobic reactions that have been shown to be the dominant biodegradation processes at many petroleum release sites.
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