The Environmental Contaminants program conducts studies that help to reveal the health of terrestrial and aquatic ecosystems. Wildlife and fish populations are assessed for the health of their habitats, populations and individual organisms. The program incorporates an approach to designing and conducting investigations which includes a scientific peer review process. Since 1988, the Pacific Region contaminant specialists have conducted 62 refuge and 33 off-refuge investigations. In 2002 there were 13 refuge investigations and 7 off-refuge investigations underway. These studies are in the process of investigating a wide range of contaminant issues.