Groundwater-quality sampling at the Ouachita-Nevada Wood Treaters Superfund Site, Reader, Arkansas, October 2024

The Ouachita-Nevada Wood Treaters Superfund Site is a former wood-treatment facility located on approximately five acres of undeveloped land along the west side of North Main Street in Reader, Arkansas in Ouachita County. The former facility used wood treatment products containing pentachlorophenol (PCP) and heating oil, a chromium-copper-arsenate solution, and a mixture of diesel fuel and motor oil. Releases of these wood treatment products resulted in soil and groundwater contamination in the shallow aquifer beneath the site (U.S. Environmental Protection Agency [EPA], 2021).

In October 2024, the U.S. Geological Survey (USGS), in cooperation with the EPA, collected groundwater-level altitude data and water-quality samples from 18 monitoring wells at the Ouachita-Nevada Wood Treaters Superfund Site in Reader, Arkansas. These data were collected to evaluate the spatial distribution of semivolatile organic compounds (SVOCs) and dioxins and furans at the site. This dataset includes groundwater-level altitudes, field properties, and environmental and quality-control water-quality data. Water-quality samples were analyzed for a suite of SVOCs and for unfiltered (total) and filtered (dissolved) concentrations of dioxins and furans.