Figure 2-2. Schematic illustration of the relationship of the four major components of risk assessment

Figure 2-2. Schematic illustration of the relationship of the four major

components of risk assessment

The following components of the evaluative process in the UTM and risk

assessment are conceptually analogous:

Upland Testing Manual*

Risk Assessment

Identification of relevant pathways

Problem formulation

Determination of environmental quality

Effects assessment

Determination of biological availability and spatial and temporal distribution

Exposure assessment

of COC in relation to populations, communities, and ecosystems of interest

Determination of management need

Risk characterization

* Identification of relevant pathways is discussed in Chapter 3. The other UTM processes are

discussed in relation to the tiers for each pathway in Chapters 4 through 9.

2-9

Chapter 2 Structure and Approach of the UTM