Step 1.1 Identifying Exposure Pathway Categories

Introduction

ATSDR categorizes exposure pathways as completed, potential, or eliminated.

Completed pathway: All five elements of the pathway are present.

Potential pathway: One element (or more) of the pathway cannot be identified, but it is possible that the element might be present or might have been present.

Eliminated pathway: At least one element of the pathway is not present and either will never be present or is extremely unlikely to ever be present.

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