EV-595 Fall 1997

In the last lecture, Exposure Assessment, Part #1, exposure assessment was said to be composed of a three step process. These are: Characterize the Exposure Setting, Identify Exposure Pathways, and Quantify Exposure.
Characterizing the Exposure Setting was said to be composed of two parts: 1) determining the characteristics of the physical environment and 2) determining the characteristics of exposed and potentially exposed populations.

1) What are two physical environment characteristics that the risk assessor may need to complete an environmental risk assessment (2 pts)?

ONE:

TWO:

2) What are the two time periods which are of greatest interest in environmental risk assessment (2 pts)?

ONE:

TWO:

When determining which scenarios should be included when Characterizing the Exposure Setting, the residential scenario was discussed at length. During this discussion, two "hard facts" regarding its use in any human health risk assessment were presented.

3) What are these two "hard facts" (4 pts)?

FACT #1:

FACT #2:

Oftentimes, clients become upset when a regulatory agency requests that a residential scenario be included in the assessment of what the client considers to be a site that is currently industrial. Two items were mentioned that makes including the residential scenario appropriate.

4) The two items that make including the residential scenario appropriate in a risk assessment are: (2 pts)?

ITEM #1:

ITEM #2:

Last Revised: September 15, 1997