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 gau@rrc.texas.gov, 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
• wellbore and completion diagram

• 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.