EPA-Expo-Box (A Toolbox for Exposure Assessors)
Sources of contamination to food, water, and soil and dust are discussed in the Food, Aquatic Biota, Water and Sediment, and Soil and Dust Modules in the Media Tool Set of EPA-Expo-Box. Media-specific concentrations are needed for estimating exposure via the ingestion route. Data tools that provide concentrations—or techniques for measuring or modeling concentrations—of contaminants in these media as well as Consumer Products are discussed in the media-specific modules and are also summarized in the subsequent sections.
Information on sampling techniques and analytical methods is available to support the measurement of contaminants in potentially ingested media.
In the absence of measurement data, a variety of models can be used to estimate contaminant concentrations in food, water, soil, or other materials that may be ingested. A number of resources are available to assist in these modeling efforts.
There are a number of information sources that provide monitoring data on contaminant concentrations in potentially ingested media.