General Maintenance

General maintenance on several Railroad Commission IT systems will be performed between 7 p.m. on Friday, May 17, 2019 and 7 a.m. on Saturday, May 18, 2019, and 3 p.m. and 7 p.m. on Sunday, May 19, 2019.  During these times some online systems may be unavailable or experience degraded functionality. We appreciate your patience as we work to improve RRC systems and apologize for any inconvenience.

Groundwater Advisory Unit (GAU) Determination for a Seismic Survey

Required Documents

To request a Groundwater Protection Determination for a Seismic Survey, submit the following documents to the Railroad Commission of Texas via e-mail to, regular US Mail, or an overnight express service:

  • a letter on your company’s letterhead that includes:
    • the company’s name, address, and phone number
    • the contact person
    • email address (if available)
    • the name of the proposed seismic program
    • the county or counties in which the project is located
    • the depth of the shot holes
    • the size (in pounds) of the explosive charge used in each shot hole
  • a map showing the shot-hole locations and the land survey lines

Expected Processing Time Frame

Once all required information is received and determined to be administratively complete, the estimated processing time for a Seismic Survey letter is seven (7) business days.

Last Updated: 3/27/2019 3:51:49 PM