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3859471 
Journal Article 
Geochemical and hydrologic factors controlling subsurface transport of poly- and perfluoroalkyl substances, Cape Cod, Massachusetts 
Weber, AK; Barber, LB; LeBlanc, DR; Sunderland, EM; Vecitis, CD 
2017 
Environmental Science & Technology
ISSN: 0013-936X
EISSN: 1520-5851 
51 
4269-4279 
English 
is supplemented by 11374000 : Supporting information
Growing evidence that certain poly- and perfluoroalkyl substances (PFASs) are associated with negative human health effects prompted the U.S. Environmental Protection Agency to issue lifetime drinking water health advisories for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) in 2016. Given that groundwater is a major source of drinking water, the main objective of this work was to investigate geochemical and hydrological processes governing the subsurface transport of PFASs at a former fire training area (FTA) on Cape Cod, Massachusetts, where PFAS-containing aqueous film-forming foams were used historically. A total of 148 groundwater samples and 4 sediment cores were collected along a 1200-m-long downgradient transect originating near the FTA and analyzed for PFAS content. The results indicate that unsaturated zones at the FTA and at hydraulically downgradient former domestic wastewater effluent infiltration beds both act as continuous PFAS sources to the groundwater despite 18 and 20 years of inactivity, respectively. Historically different PFAS sources are evident from contrasting PFAS composition near the water table below the FTA and wastewater-infiltration beds. Results from total oxidizable precursor assays conducted using groundwater samples collected throughout the plume suggest that some perfluoroalkyl acid precursors at this site are transporting with perfluoroalkyl acids. 
• Additional PFAS (formerly XAgency)
• Expanded PFAS SEM (formerly PFAS 430)
     Litsearch: September 2019
          PubMed
          Web of Science
     Not prioritized for screening
     Perfluorooctane
• FtOH 8:2
     Literature Search
          WOS
     Screening Results
          Excluded/Not on Topic
• ^Per- and Polyfluoroalkyl Substances (PFAS)
     PFOA (335-67-1) and PFOS (1763-23-1)
          Literature Search – Adverse outcome pathway (2015-present)
               Pubmed
               WOS
     FtOH 8:2 (678-39-7)
          Literature Search
               WOS
• PFAS 150
     Literature Search Update December 2020
          PubMed
          WOS
     Literature Search August 2019
          PubMed
          Web of Science
     Not prioritized for screening
     8:2 Fluorotelomer alcohol
     Ammonium perfluorooctanoate
     Perfluorooctane
     Perfluorooctanesulfonic acid
     Perfluorooctanoic acid
• PFNA
     Litsearch Update 2017-2018
          PFAS Untag
     Literature Search
          Toxline
     PFNA May 2019 Update
          Toxnet
     Title and Abstract Screening
          Excluded
               Not relevant to PECO
• PFOA (335-67-1) and PFOS (1763-23-1)
     Literature Search – Adverse outcome pathway (2015-present)
          Pubmed
          WOS
     Screening Results
          Excluded/Not on Topic
     Literature Search Update (2013-2019)
          PubMed
          WOS