Contains bibliographical references (p. 25-31).

"Food-web models represent a commonly used technique for estimating risk to mammalian and avian wildlife species. [... They] are used in conjunction with other risk assessment techniques (e.g. chemical analysis of soils, water, and tissues, toxicity testing, and biological surveys) when conducting a tiered ecological risk assessment. This report describes specific procedures for application of screening-level food-web models within each of the following steps of a baseline risk assessment: risk assessment planning, exposure assessment, toxicity assessment, and risk characterization." -- p. 1,3.