These gas line things (blowing up a building)seem strange to me. The standard practice in Md (where I cut mine) was to bring the line out of the ground before it entered the building so gas following the line would vent before it got inside. They had the regulator on the side of the house and low pressure went inside. I had all this explained while the gang was there fixing the line we hit.
I had lots of WGL people there since they were as shocked as we were that we hit a line. It wasn't on their engineering drawings.
