Record Display for the EPA National Library Catalog


Main Title Waste Allocation Simulation Models: A State-of-the-Art Review (Journal Version).
Author Ambrose, R. B. ; Connolly, J. P. ; Southerland, E. ; Barnwell, T. O. ; Schnoor, J. L. ;
CORP Author Environmental Research Lab., Athens, GA. ;Manhattan Coll., Bronx, NY. ;Iowa Univ., Iowa City.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/209;
Stock Number PB89-134647
Additional Subjects Industrial wastes ; Water pollution control ; Mathematical models ; Physicochemical properties ; Statistical analysis ; Computerized simulation ; Predictions ; Reprints ; Toxic substances ; Water quality index ; Path of pollutants ; Point sources
Library Call Number Additional Info Location Last
NTIS  PB89-134647 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
The waste load allocation process for toxic chemicals requires a different approach than that used for conventional pollutants. Present waste load allocations for toxicants generally rely on simple dilution calculations for low stream flow conditions. The paper examines the new water quality criteria for toxicants and the modeling strategies used to implement the criteria. The new criteria specify an acute threshold concentration and a chronic-no-effect concentration for each toxicant as well as tolerable durations and frequencies of exposure at or above the two concentrations. Methods for using steady-state and dynamic models to derive waste load allocations based on the new criteria are reviewed. Physical, chemical, and biological processes affecting toxicants in the mixing zone and far-field regimes of streams are summarized.