Truck freight terminals are predominantly located near highways and industrial facilities. This proximity to pollution sources, coupled with meteorological conditions and wind patterns, may affect occupational exposures to particles at these work locations. To understand this process, data from an environmental sampling study of particles at U.S. trucking terminals, along with weather and geographic maps, were analyzed to determine the extent to which the transportation of particles from local pollutant sources elevated observed occupational exposures at these locations. To help identify potential upwind sources, wind direction weighted averages and speed measurements were used to construct wind roses that were superimposed on overhead photos of the terminal and examinedfor upwind source activity. Statistical tests were performed on these 'source' and 'nonsource' directions to determine whether there were significant differences in observed particle levels between the two groups. Our results provide evidence that nearby upwind pollution sources significantly elevated background concentrations at only afew ofthe locations sampled, whereas the majority provided little to no evidence ofa significant upwind source effect.
Effects of wind on background particle concentrations at truck freight terminals
Journal of Occupational and Environmental Hygiene ; 4 , 1 ; 36-48
2007
13 Seiten, 10 Bilder, 3 Tabellen, 23 Quellen
Aufsatz (Zeitschrift)
Englisch
Engineering Index Backfile | 1902
Engineering Index Backfile | 1953
Engineering Index Backfile | 1920
|Engineering Index Backfile | 1930
|Freight Terminals Operating Environment
NTIS | 1981
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