This report represents the results of the AGI peer review panel charged with examining the current state of modeling of the fate and transport of PCBs in the lower Fox River in Wisconsin. AGI created the peer review panel at the request of de maximis, inc., St. Charles, IL, and support for the peer review process was provided by the Fox River Group through de maximis, inc. The panelists were selected by AGI and the panel chair, Dr. John Tracy. Two meetings of the panel were held. The first meeting on December 10, 1999 was held in Neenah, WI. During that meeting, LTI, the U.S.