"The number one cause of natural gas incidents nationwide is damage to pipelines through hit lines,"said Sarah Perry, senior communications and community relations specialist.
"It's important for everyone to know to call 811 to have utility lines marked at least 3 days before digging occurs. It's the law," Perry said.
Below is a video form the meeting where Columbia Gas thanks Ambridge Municipal contractors Alex Paris Contracting and Rudzik Excavating along with Ambridge Water Authority.
Columbia Gas representatives gave each group a shovel to say thanks for safe and responsible digging.