data presented to show correlation between PFAS in leachate and physical chemical parameters. This dataset is associated with the following publication: Zhang, H., Y. Chen, Y. Liu, J. Bowden, T. Tolaymat, T. Townsend, and H. Solo-Gabriele. Relationships between Per- and Polyfluoroalkyl Substances (PFAS) and Physical-Chemical Parameters in Aqueous Landfill Samples. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 329: 138541, (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).

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 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).

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).

Concentration results and quality assurance for pharmaceutical, hormone, and per- and polyfluorinated alkyl substances (PFAS) analyzed in landfill leachate and wastewater influent and effluent. Samples were collected between July and October 2016, using U.S. Geological Survey field methods. Water-quality samples for pharmaceutical and hormone compounds (reported in nanograms per liter; ng/L) were analyzed at the U.S. Geological Survey, National Water Quality Laboratory in Denver, Colorado. Samples for PFAS compounds (reported in ng/L) were analyzed at the Oregon State University Environmental and Molecular Toxicology Field Laboratory, College of Agricultural Sciences.

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.

Leachate volumes and composition data before and after a subsurface exothermic reaction. This dataset is associated with the following publication: Krause, M., W. Eades, N. Detwiler, and T. Tolaymat. Leachate indicators of an elevated temperature landfill. WASTE MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 171: 628-633, (2023).

Data used in the manuscript to creat the tables and figures. This dataset is associated with the following publication: Liu, Y., P. Mendoza-Perilla, K. Clavier, T. Tolaymat, J. Bowden, H. Solo-Gabriele, and T. Townsend. Municipal solid waste incineration (MSWI) ash co-disposal: Influence on per- and polyfluoroalkyl substances (PFAS) concentration in landfill leachate. WASTE MANAGEMENT. Elsevier Science Ltd, New York, NY, USA, 144(1): 49-56, (2022).