Spatial Analysis and Decision Assistance SADA

Risk Assessment

The current version of SADA contains a human health risk assessment module and an ecological risk module.

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Human Health Risk

SADA provides a full human health risk assessment module and associated databases. The risk models follow the EPA's Risk Assessment Guidance for Superfund (RAGS) and can be customized to fit site specific exposure conditions. The following landuse scenarios and exposure pathways are available for both radionuclides and nonradionuclides to calculate risk and data screening levels.

Landuse Scenarios
  • Residential
  • Industrial
  • Agricultural
  • Recreational
  • Excavation
Exposure Pathways
  • Ingestion
  • Inhalation
  • Dermal contact
  • External (radionuclides)
  • Food consumption
  • Combined Exposure

Risk results can be produced in standard tabular format or graphically.

Ecological Risk

This module allows users to perform benchmark screenings and the ability to calculate forward risk to a number of terrestrial and aquatic receptors is currently being added. The routines access the contaminant matching and data management functions already available in SADA. Accompanying the ecological risk module is a database of benchmarks and other information that are supported and updated on the SADA web site. Benchmarks are adjusted for site-specific physical parameters as appropriate.

To set up ecological risk, the user goes through a simple setup process that registers site contaminants with toxicity and physical parameter information, as well as bringing information into the SADA file that is necessary for exposure dose modeling.

Screening Benchmarks

Benchmark results can be produced in standard tabular format or graphically.

Benchmark Methods

Terrestrial exposure dose models are also available in SADA.

Different types of output with terrestrial dose are available.



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