These data contain concentrations of tetrachloroethylene in soil-gas samples collected from 2014 to 2016 by the EPA.In order to protect personally identifiable information (PII), all data collected by the U.S. Environmental Protection Agency do not contain spatial information. Please contact the U.S. Environmental Protection Agency for permission and access to spatial information for these samples. These data support the following publication: Wilson, J.L., Limmer, M.A., Samaranayake, V.A., Burken, J.G., 2018, Phytoforensics: trees as bioindicators of potential indoor exposure via vapor intrusion: PLoS ONE, v. 13, no. 2. DOI: 10.1371/journal.pone.0193247.

Concentrations of tetrachloroethylene (PCE) in points from interpolated tetrachloroethylene soil data gridded at a 1-m interval at the Vienna Wells site, Vienna, Missouri, 2012-2015. These data were extracted at 1-meter intervals from interpolating published soil data (doi: https://doi.org/10.5066/F71835D8), which was created using the inverse-distance weighting method at a 1-meter interval, the mean PCE concentration at each location, a power of 2, and minimum and maximum neighbor search of 10 and 15.

These data contain concentrations of tetrachloroethylene in shallow groundwater samples collected in 2015 by the EPA. These data are a subset of all the groundwater at the site. Samples were collected using direct-push technology. In order to protect personally identifiable information (PII), all data collected by the U.S. Environmental Protection Agency do not contain spatial information. Please contact the U.S. Environmental Protection Agency for permission and access to spatial information for these samples. These data support the following publication: Wilson, J.L., Limmer, M.A., Samaranayake, V.A., Burken, J.G., 2018, Phytoforensics: trees as bioindicators of potential indoor exposure via vapor intrusion: PLoS ONE, v. 13, no. 2. DOI: 10.1371/journal.pone.0193247.

Interpolated dataset of concentrations of tetrachloroethylene in soil samples at the Vienna Wells site, Vienna, Missouri. Interpolated soil data are from a published soil sample dataset (doi: https://doi.org/10.5066/F71835D8) using inverse-distance weighting at a 1-m interval, a power of 2, minimum and maximum neighbor search of 10 and 15, and within 50 meters of tree-core data collected on July 29, 2014. Also contains information on distances between each tree and soil location within a 50-meter radius of each tree.

Concentrations of tetrachloroethylene (PCE) in interpolated soil surface boundary points at the Vienna Wells Site: Maries County, Missouri. This boundary is composed of points with an assumed PCE concentration of 11 micrograms per kilogram (detection limit) and was used with the soil sample dataset (doi: 10.5066/F71835D8) to create an interpolated surface.

These data contain concentrations of tetrachloroethylene in tree-core samples collected in 2015 by the U.S. Environmental Protection Agency. These data support the following publication: Wilson, J.L., Limmer, M.A., Samaranayake, V.A., Burken, J.G., 2018, Phytoforensics: trees as bioindicators of potential indoor exposure via vapor intrusion: PLoS ONE, v. 13, no. 2. DOI: 10.1371/journal.pone.0193247

Concentrations of tetrachloroethylene in tree-core samples at the Vienna Wells site on July 29, 2014, Vienna, Missouri. Also contains information on tree-trunk diameter and species.

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).

This data release contains 1-4 dioxane, per- and polyfluoroalkyl substances (PFAS), chlorofluorocarbons (CFCs), methyl tert-butyl ether (MTBE), and trihalomethanes (THMs) concentration data from groundwater samples collected from 78 monitoring wells in Nassau County New York. Samples were collected from May 2019 through December 2022 at wells ranging in depth from twenty-three feet to 875 feet. All wells were sampled with a submersible pump and a subset of five wells were sampled using a dual membrane passive diffusion sampler for method comparison. Samples were analyzed for 28 PFAS compounds and 15 volatile organic compounds (VOCs; 1,4-dioxane, MTBE, and several CFCs and THMs). Field replicates, field blanks, equipment blanks, source solution blanks, and laboratory-control samples, and basic field parameters (water temperature, pH, turbidity, specific conductance, and dissolved oxygen) were collected for quality assurance and quality control purposes and are included. Laboratory-control samples for PFAS included isotope dilution standard recoveries, method blanks, instrument blanks, and blank and matrix spike isotope dilution standard recoveries. Laboratory-control samples for VOCs included surrogate recoveries and a laboratory matrix spike to evaluate extraction efficiency and matrix interference on a sample-specific basis.