All of the sampling equipment was decontaminated prior to use in the field and between stations to prevent cross-contamination. The decontamination procedure specified in EPA Region II, CERCLA Quality Assurance Manual from October 1989, Revision 1 (WHG 2009B) was implemented prior to each station for sampling equipment that came into direct contact with the media to be sampled (e.g., sediment sampler, stainless steel bowls, spoons, etc.). The EPA Region II procedures used for decontamination are summarized below (solvents used during decontamination activities were collected and stored for disposal at the laboratory):
