T.W. Custer, D.W. Sparks, S.A. Sobiech, R.K. Hines, M.J.
Melancon, "Organoclorine Accumulation by Sentinel Mallards at the
Winston-Thomas Sewage Treatment Plant, Bloomington, Indiana",
Arch. Environ. Contam. Toxicol. 30,163-169 (1996)

This technical paper was co-authored by Dan Sparks of the
Bloomington Field Office of the Fish and Wildlife Service. He
performed a study of mallards feeding at the Winston Thomas
Treatment Plant lagoon. The mallards accumulated alarmingly high
PCB concentrations within 10 days of feeding at the lagoon.  The
original paper is on file at the COPA office. The conclusions
section follows.


" The results with sentinel mallards suggest that even a limited
exposure of migratory waterfowl to the Winston-Thomas lagoon may
allow waterfowl to accumulate certain OC [organo-chlorine]
residues that would make them unfit for human consumption and
might adversely affect their survival and ability to reproduce
successfully. For example, within 10 days of exposure to the
lagoon, total PCB concentrations in breast muscles were 19 and 78
times higher than human consumption guidelines for poultry in the
United States (FDA 1979) and Canada (Health and Welfare Canada
1991), respectively.  Within 50 days, PCB concentrations in
breast muscles exceeded Great Lakes Sport Fish Consumption
Advisory Guidelines (Anderson et. al. 1993)."