This document reports the results of preliminary investigations of contaminant mobility at the Times Beach confined disposal site in Buffalo, New York. A terrestrial earthworm (Eisenia foetida) bioassay procedure was applied in the field and in a laboratory controlled-environment chamber 7 years after terminating the diposal of dredged material. Native earthworms were collected from Times Beach and a nearby reference area, and native fishes were collected from the lake within ...