Natural gas is transported via buried pipelines. These lines are all clearly marked with pipe markers that are normally bright yellow markings with the company name and emergency phone numbers.
Before you dig on your property, contact the Texas one-call center by dialing 811 at least 48 hours (not including weekends or holidays) prior to beginning the excavation. The operators will come and mark their underground facilities. There is no charge for this service and is required by state law.