I bet there is a local rule about how close to the line you can bury a lateral. This is "zoning" around here. They look at the plot plan and make sure you are not encroaching. I just had to realign a new gas line for the same reason. It was 10' minimum from the buried pipe to the property line. I really don't have much confidence in our surveys anyway. The engineering firm that laid out my wife's development says +/- a foot is about as good as it gets. I think the development of the GPS might end up moving a lot of property lines. We always took the old surveys as gospel but I think there are lots of errors on the placement of the master benchmark pins if what is happening around here is any indication.
