A good point by jk.I do not have quick access to any LNG maps but since Ohio used to be a major player for gas wells, I find it hard to believe that there are no major pipelines running through Ohio but if it is so, it is so.
Of course major gaslines run across Ohio. They run through some back yards but the odds are very small, maybe one in 100,000 backyards.
Most of us in Ohio and Michigan have a gasline easement at the front or back of our property.
Mine is at the back. It's a four inch line. Most subdivision plats contain these general utility easements. The odds of having a 16" or larger gasline running across your back yard are maybe one in 100,000.
Let's return this to the OP who needs to get some more information out to us. I suspect that this is only the usual backyard subdivision easement just based on simple probabbility.
We have gone too far with speculation at this point. Let's hear back from the OP.

