This is the PFAS concentrations in the various samples analyzed. These concentrations were used to creat the various graphs and tables in the associated manuscript. This dataset is associated with the following publication: Chen, Y., H. Zhang, Y. Liu, J. Bowden, T. Tolaymat, T. Townsend, and H. Solo-Gabriele. Evaluation of Per- and Polyfluoroalkyl Substances (PFAS) in Leachate, Gas Condensate, Stormwater and Groundwater at Landfills. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 318: 137903, (2023).

This is the PFAS concentrations in the various samples analyzed. These concentrations were used to creat the various graphs and tables in the associated manuscript. This dataset is associated with the following publication: Chen, Y., H. Zhang, Y. Liu, J. Bowden, T. Tolaymat, T. Townsend, and H. Solo-Gabriele. Evaluation of Per- and Polyfluoroalkyl Substances (PFAS) in Leachate, Gas Condensate, Stormwater and Groundwater at Landfills. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 318: 137903, (2023).

The file contains raw data measurement conducted by EPA's contractor. The data have the names of the samples and the concentration of 26 PFAS compounds that were analyzed. This dataset is associated with the following publication: Chen, Y., H. Zhang, Y. Liu, J. Bowden, T. Tolaymat, T. Townsend, and H. Solo-Gabriele. Concentrations of perfluoroalkyl and polyfluoroalkyl substances before and after full-scale landfill leachate treatment. WASTE MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 153: 110-120, (2022).

The file contains raw data measurement conducted by EPA's contractor. The data have the names of the samples and the concentration of 26 PFAS compounds that were analyzed. This dataset is associated with the following publication: Chen, Y., H. Zhang, Y. Liu, J. Bowden, T. Tolaymat, T. Townsend, and H. Solo-Gabriele. Concentrations of perfluoroalkyl and polyfluoroalkyl substances before and after full-scale landfill leachate treatment. WASTE MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 153: 110-120, (2022).

the data include results of PFAS concentration in primary and secondary landfill leachate. Each figure in the manuscript has a specific sheet associated with it. This dataset is associated with the following publication: Robey, N., Y. Liu, T. Tolaymat, J. Bowden, H. Solo-Gabriele, and T. Townsend. Per- and Polyfluoroalkyl Substances (PFAS) Profiles in Primary and Secondary Landfill Leachates: Indications of Transformation, Liner Interactions, and other PFAS Sources. JOURNAL OF HAZARDOUS MATERIALS. Elsevier Science Ltd, New York, NY, USA, 494: 138705, (2025).

All PFAS results from leachate and wastewater influent -- MSD study. This dataset is associated with the following publication: Collins, A., M.J. Krause, S.M. Bessler, A. Brougham, T. McKnight, T. Strock, and M. Ateia. City-scale impacts of PFAS from normal and elevated temperature landfill leachates on wastewater treatment plant influent. JOURNAL OF HAZARDOUS MATERIALS. Elsevier Science Ltd, New York, NY, USA, 480: 136270, (2024).

PFAS in Landfill Organics. This dataset is associated with the following publication: Saha, B., M. Ateia, T. Tolaymat, S. Fernando, J.R. Varghese, D. Golui, A.N. Bezbaruah, J. Xu, N. Aich, J. Briest, and S.M. Iskander. The unique distribution pattern of PFAS in landfill organics. JOURNAL OF HAZARDOUS MATERIALS. Elsevier Science Ltd, New York, NY, USA, 479: 135678, (2024).

This metadata record contains one table and one shapefile with results from field sampling at locations of groundwater discharge (seeps) identified by autonomous boat survey at the Lower Darby Creek Area (LDCA) Superfund Site, near Folcroft, Pennsylvania, in 2024. Included in the dataset are (1) PFAS concentrations, volatile organic compound (VOC) concentrations, cations/trace metals data, total organic carbon (TOC) content, anion concentrations, dissolved gas concentrations, total and ferrous iron concentrations, sulfide concentrations, water quality measurements, and their associated field sampling information for porewater samples collected from seeps and (2) water quality parameters (pH, turbidity, dissolved oxygen, specific conductance, and water temperature) and coordinates measured in creeks in LDCA by a remote-controlled autonomous boat as part of seep identification surveys.

This metadata record contains one table and one shapefile with results from field sampling at locations of groundwater discharge (seeps) identified by autonomous boat survey at the Lower Darby Creek Area (LDCA) Superfund Site, near Folcroft, Pennsylvania, in 2024. Included in the dataset are (1) PFAS concentrations, volatile organic compound (VOC) concentrations, cations/trace metals data, total organic carbon (TOC) content, anion concentrations, dissolved gas concentrations, total and ferrous iron concentrations, sulfide concentrations, water quality measurements, and their associated field sampling information for porewater samples collected from seeps and (2) water quality parameters (pH, turbidity, dissolved oxygen, specific conductance, and water temperature) and coordinates measured in creeks in LDCA by a remote-controlled autonomous boat as part of seep identification surveys.

This file contains data from accumulation of chloro perfluoro polyether carboxylate (Cl-PFPECA) and legacy perfluorocarboxylate PFAS in native vegetation and subsoil samples collected in New Jersey by New Jersey state government personnel. Samples were originally processed and extracted in Athens, GA EPA/ORD/NERL/EMMD laboratory by Tom Jenkins and John Washington. Samples were analyzed for PFAS on the Waters LC-MS/MS instruments in Athens, GA EPA/ORD/CEMM/EPD laboratory by Mary Davis, Marina Evich, and John Washington. Instrument output was reviewed and optimized by Mary Davis, Marina Evich, and John Washington. This dataset is associated with the following publication: Davis, M., M. Evich, S. Goodrow, and J. Washington. Environmental Fate of Cl-PFPECAs: Accumulation of Novel and Legacy Perfluoroalkyl Compounds in Real-World Vegetation and Subsoils. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, USA, 57(24): 8994–9004, (2023).