The trench is dug and a blue powder is placed in the trench on which the gas line is laid. This is the "T" where the gas line will head to the new church.
Look closely for the yellow line laying beside the gas pipe. When you place a PA One Call and they come out to mark where the important lines are they run a meter over the ground and this yellow line signals the meter as to where the pipeline is located. PA One Call then places a row of flags up to indicate where to stay away from when digging!
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