Call 811 Before You Dig

Before you begin any type of digging, it is important to know what lies beneath your feet.

Pipelines may be located anywhere, including under streets, sidewalks and private property, sometimes just inches below the surface. Excavation, planting, demolition and other forms of digging are a major cause of pipeline damage.

Whether you’re planning to build a major development or just landscaping your yard, protect your safety and the safety of those around you by calling Underground Service Alert agencies at 811, at least two business days prior to excavating. You may call Underground Service Alert agencies between 6:00 a.m. and 7:00 p.m., Monday through Friday (excluding holidays). Underground Service Alert will coordinate with various utility owners in the area to mark the locations of buried utility-owned lines. This is a FREE service and it can help prevent injury, costly property damage and loss of utility service.

Here's a list of all Call811 agencies by state:
http://www.call811.com/state-specific.aspx