Record Display for the EPA National Library Catalog

RECORD NUMBER: 271 OF 1617

OLS Field Name OLS Field Data
Main Title Development of a Mass Balance Model for Estimating PCB Export from the Lower Fox River to Green Bay.
Author Velleux, M. ; Endicott, D. ;
CORP Author Environmental Research Lab.-Duluth, Grosse Ile, MI. Large Lakes Research Station. ;AScI Corp., Duluth, MN.
Publisher c1994
Year Published 1994
Report Number EPA/600/J-94/430;
Stock Number PB95-111886
Additional Subjects Water pollution ; Polychlorinated biphenyls ; Mass balance ; Mathematical models ; Environmental transport ; Reprints ; Green Bay ; Fox River ; Path of pollutants ; Point sources ; Study estimates ; Sediments ; Paper industry ; Water quality ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB95-111886 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/06/1995
Collation 22p
Abstract
A mass balance approach was used to model contaminant cycling in the lower Fox River from the DePere Dam to Green Bay. The objectives of this research were (1) to estimate present contaminant export from the Fox River to Green Bay, and (2) to quantify contaminant transport and fate pathways in the lower river for the study period. Specifically, a model describing the transport, fate, and export of chlorides, total suspended solids, total PCBs, and six PCB congeners for the lower Fox River was developed. Field data collected as part of the U.S. Environmental Protection Agency's Green Bay Mass Balance Study were used to calibrate the model. Model results suggest that the transport of inplace pollutants significantly contributed to the cumulative export of total PCBs over this period. Estimated total PCB transport in the Fox River during 1989 increased 60% between the dam and river mouth due to the resuspension of lower river sediments. Total suspended solids and PCB predictions are most sensitive to particle transport parameters, particularly the settling and resuspension velocities. The significant components of the total PCB mass balance are import (loading over the DePere Dam), settling, resuspension, and export to Green Bay. Volatilization, porewater transport, and point source input were not significant to the mass balance. Present point source discharges to the river are not significant total PCB sources, collectively contributing less than 6 kg of PCB to the river during the mass balance period.