Metal distributions in New Orleans following hurricanes Katrina and Rita: A continuation study.
In late October 2005, twenty-seven metals were determined in soils and sediment layers deposited by floodwaters (flood sediments) within New Orleans, Louisiana. Samples originated from 43 sites along four transects, at an industrial canal, and near the Superdome. The sampling design encompassed flooded and nonflooded areas as well as differing economic strata within the city. Results from this effort confirmed findings of our previous study designed to quantify contaminant profiles in the aftermath of Hurricane Katrina. The expanded sampling from this most recent investigation revealed that arsenic (As) and lead (Pb) concentrations exceeded United States Environmental Protection Agency (USEPA) soil screening criteria indiscriminately throughout the city. However, As and Pb concentrations were lower along St. Charles Avenue, an area largely unaffected by hurricane related flooding. Toxicant concentrations did not exceed soil screening criteria values for lead within any flood sediments or for 32 of 37 soil samples, but arsenic concentrations in 40 of 43 samples exceeded screening criteria.
Cobb
George P
GP
Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University, P.O. Box 41163, Lubbock, Texas, 79409-1163, USA. george.cobb@tiehh.ttu.edu
Abel
Michael T
MT
Rainwater
Thomas R
TR
Austin
Galen P
GP
Cox
Stephen B
SB
Kendall
Ronald J
RJ
Marsland
Eric J
EJ
Anderson
Todd A
TA
Leftwich
Blair D
BD
Zak
John C
JC
Presley
Steven M
SM
D001151:Arsenic / Q000032:analysis; D004190:Disasters; D005500:Follow-Up Studies; D019015:Geologic Sediments / Q000032:analysis*; D007854:Lead / Q000032:analysis; D008145:Louisiana; D008670:Metals / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*
D008670:Metals; D012989:Soil Pollutants; D007854:Lead; D001151:Arsenic