Current SADA Webpage Vistors

Previous SADA Webpage Visitors

Spatial Analysis and Decision Assistance

Risk Assessment

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

Need the newest risk databases?

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.

• Residential
• Industrial
• Agricultural
• Recreational
• Excavation

• 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.

• Surface Water
• Sediment
• Soil
• Biota

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

• Histogram View
• Benchmark Table
• Benchmark Ratios
• Benchmark Screens
• Point Eco Risk Maps
• Contoured Eco Risk Maps
• Probability maps
• Area of Concern maps

Terrestrial exposure dose models are also available in SADA.

• Set Area Exposure Statistics
• Set Terrestrial Exposure Parameters
• Set Terrestrial Contaminant Parametners
• Bioaccumulation

Different types of output with terrestrial dose are available.

• Exposure Dose Tables
• Point Dose Maps
• Contoured Dose Maps
• Probability maps
• Area of Concern maps