The greatest risk to underground natural gas pipelines is the accidental damage during excavation. Remember to dig safely:
Call 811 before digging
Wait for the site to be marked
Respect the marks
Dig with care
The law requires that all persons planning excavations to notify the One-Call Center at least 48 hours (excluding weekends and holidays) before digging so underground utilities can be located. Calling 811 is free. You can also call these toll-free numbers:
| Montana |
1-800-424-5555 |
| North Dakota |
1-800-795-0555 |
| South Dakota |
1-800-781-7474 |
| Wyoming |
1-800-849-2476 |
