Changing Environment Urban Contaminants of Concern ◦ Heavy Metals ◦ Polycyclic Aromatic Hydrocarbons (PAHs) In Situ Remediation ◦ Mechanisms ◦ Influencing Factors Conclusions
Increasing urban/suburban development ◦ Transportation ◦ Impermeable area ◦ Water management ◦ Soil contamination
Heavy Metals ◦ Pb, Mn, Cu, Zn ◦ Sources Polycyclic Aromatic Hydrocarbons ◦ High/Low molecular weight ◦ Sources
PAH Mechanisms ◦ Rhizospheric Biodegradation ◦ Phytodegradation ◦ Phytoaccumulation ◦ Phytostabilization Heavy Metal Mechanisms ◦ Phytoaccumulation
Retention Time ◦ Soil profile ◦ Plant selection Climatic Considerations ◦ Plant selection ◦ Loading rate Long Term Effects
Sustainable Infrastructure Need for Long Term Studies