In the water and wastewater industry, workers face many hazards regularly. For those literally in the trenches, excavating has its own set of hazards like cave-ins, equipment rollovers, traffic control and falls into the excavation, to name a few. One hazard that can sometimes get overlooked is the presence of gas lines.First and foremost, calling 811 before you dig is a must. Once the gas line is properly marked, the workers digging should respect the tolerance zones. Those zones differ from state to state so it’s important to know what they are in your state. The tolerance zone provides a
