Transcript Center for Innovative Bridge Engineering

EGGG 167
CEE Lecture 2
Environmental
Engineering and
Risk Analysis
EPA Regions
Environmental Engineering
 Water Quality
 Water and Wastewater
Treatment
 Solid and Hazardous
Waste Management
 Air Quality
 Environmental Chemistry
and Toxicology
 Environmental Law
Aquatic Risk Assessment
Exposure
Effects
Atmosferic
Deposition
WWTP
Erosion
& Runoff
Untreated discharges
Predicted Exposure
Concentration
(PEC)
Lab- and field studies
(ecotoxicity tests)
Predicted No Effect
Concentration
(PNEC)
P. Van Sprang - Ni-BLM workshop, Ghent, 13-10-2004
Effects: Laboratory Toxicity Tests
• Aquatic ecosystem
algae
invertebrates
fish
• Sediment ecosystem
Safe environmental
concentration
Predicted No Effect
Concentration (PNEC)
crustacean
insect
P. Van Sprang - Ni-BLM workshop, Ghent, 13-10-2004
Environmental Science and Technology
Di Toro, D. M., Mahony, J. D.,
Hansen, D. J., Scott, K. J.,
Carlson, A. R., & Ankley, G. T.
(1992).
Acid volatile sulfide predicts the
acute toxicity of cadmium and
nickel in sediments.
Environ. Sci. Tech., 26(1), 96-101.
Sediment Dredging
Sediment Capping
Potomac Estuary Algal Bloom