Eagle Ford Shale Air-Sampling Results Near Oil and Natural Gas Facilities by County

This page contains a listing (by county) of TCEQ laboratory analysis of air samples collected near oil and/or natural gas facilities located in the Eagle Ford Shale area. Contact the Toxicology Division for a PDF copy of associated toxicological evaluation memorandum as well as signed and dated TCEQ Laboratory Analysis Results for collected samples.

About Samples Collected

All sampling was conducted by either:

• TCEQ regional staff from: Region 9 (Waco), Region 11 (Austin), Region 13 (San Antonio), Region 14 (Corpus Christi), or Region 16 (Laredo)

• Staff from the agency’s Mobile Monitoring and Deployment Section.

The results provided are for canister samples only. The table does not include instances where agency staff surveyed a facility using hand-held instruments and determined that there was no justification to collect a sample, nor does the table include sampling conducted using additional sampling instruments such as real-time automatic gas chromatograph, Sievers total reduced sulfur, or carbonyl sampling.

By selecting one of the counties with an active link listed below, you will see a listing of TCEQ Laboratory Analysis Results of canister sampling that we have conducted near an oil and/or natural gas facility located in that county and (if available) the associated toxicological evaluation memorandum.

The files listed below are in Portable Document Format (PDF). Help with PDF.

Updated October 10, 2019

TCEQ-defined Eagle Ford Counties:

Atascosa
Brazos
Dimmit
Fayette
Gonzales
Karnes
La Salle
Lavaca
Wilson

Other Oil and Gas Areas in the Region:

Caldwell
Comal
Guadalupe