Remember ! Before you dig, call 811.
Whether you or a contractor are going to dig on your private property, it is important that you call 8-1-1 and schedule an appointment for a service rep to come to your dig site and mark crucial infrastructure. It does not cost you anything until you dig and strike a gas line or a water line or other services.
It is just as important for municipal entities such as DPW and highway crews, sub contractors to call before digging a sidewalk or street.
Nothing more embarrassing than to strike a service and have the fire department respond to mitigate the problem until appropriate public utilities arrive to correct the mistake. Again, this costs more than the free telephone call you can make prior to starting your work project.