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ESTIMATING THE NUMBER OF AIRPORTS POTENTIALLY CONTAMINATED WITH PERFLUOROALKYL AND POLYFLUOROALKYL SUBSTANCES FROM AQUEOUS FILM FORMING FOAM: A CANADIAN EXAMPLE
Milley, S.A., I. Koch, P. Fortin, J. Archer, D. Reynolds, and K.P. Weber.
Journal of Environmental Management 222:122-131(2018)

Researchers are still investigating the extent to which emerging contaminants such as per- and polyfluoroalkyl substances (PFASs) have contaminated soil, groundwater, and surface water as a result of the release of aqueous film-forming foam (AFFF) into the environment. To evaluate the scope of the issue in Canada, researchers developed a decision tree to estimate the number of potentially PFAS-affected airport sites in Canada due to AFFF releases. The screening process was completed using publicly available resources: airport websites, the Canadian Owners and Pilots Association website, Sky Vector, Transport Safety Board of Canada aviation investigation reports, the Aviation Safety Network website, and Google maps. The methodology presented could be used to identify additional PFAS impacted sites in Canada or other jurisdictions worldwide. Of 2,071 airport/heliport sites in Canada to which the decision tree was applied, indications are that 152 of the sites likely have PFAS contamination as a result of the use of AFFF at firefighter training areas or accidents where fires occurred.



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