The Bandera Road Ground Water Plume Superfund site (hereinafter referred to as "the site") is located in the City of Leon Valley, Bexar County, Texas, and is in a commercial and industrial area of Leon Valley with nearby residential areas. The site is currently comprised of two discontinuous areas of investigation (AOIs); the second of which (AOI 2) contains a former operation dry-cleaning facility and is the focus of the investigation described herein. The detection of target compounds, including tetrachloroethene, in the shallow soils under the dry-cleaning facility suggest that the dry-cleaning equipment was likely the source of contamination. In 1995, groundwater, soil, and soil-gas samples were collected in the vicinity of AOI 2 in conjunction with a remedial investigation of the site, and both the soil and soil-gas samples contained tetrachloroethene. It is unknown if vapor migration from contaminated soil and groundwater is still occurring or if the site poses a vapor intrusion concern for residences and businesses adjacent to or at the site.
To evaluate the status of soil-gas quality, the U.S. Geological Survey (USGS), in cooperation with the U.S. Environmental Protection Agency (EPA), deployed and retrieved soil-gas samples from 41 discrete locations near a church, several small businesses, and private residences located approximately 150 to 1,000 feet southwest of AOI 2 at the site in June 2025. This dataset includes soil-gas sample locations and environmental and quality-control soil-gas data sampling results for a suite of volatile organic compounds at the site. A field trip and data summary document describing USGS data-collection activities and summaries of the associated soil-gas-quality data is also provided with this data release.
