276 Environmental Impact Analysis
appropriate. The table also presents quotients for both the mean and maxi-
mum site concentrations. This provides additional information so that the
risk assessor can make an informed judgment regarding need for more inves-
tigation based on site knowledge and extent of available data. Following the
ecological resource and contaminant screening, the areas of ecological con-
cerns can be narrowed and the risk assessment can proceed to the next step
of detailed investigation focused on the critical endpoints potentially at risk.
7.2.5 Final Problem Formulation and Detailed Ecological Investigation
With the renement of the endpoints, pathways, contaminants, habitats, and
receptors of concern accomplished t