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Superfund Sites in Hays County

Current and former Superfund sites located in Hays County, Texas. Locator map. Links to details about each site.

Hays County Map

Federal Site is noted as a red star on the mapTCEQ State site is noted as a blue star on the map

Topics Under this Category

State Highway 123 PCE Plume
This groundwater plume in San Marcos, Hays County is currently in the Operation and Maintenance phase of the Superfund Program.
Required use of SW-846 Method 5035

New Information

Beginning January 1, 2016, the TCEQ Remediation Division will require the use of United States Environmental Protection Agency (USEPA) SW846 Method 5035A, Purge-and-Trap and Extraction for Volatile Organics in Soil and Waste Samples, as amended, for the collection and preparation of solid samples for volatile organic compound (VOC) analysis using purge-and-trap technology.

The TCEQ Remediation Division guidance on Method 5035 has been updated and is available.