Sewer runs out the outer end of the house, we do have a high pressure natural gas line we can try for.
We found your striper
You might consider topping it with stone dust. Our town uses stone dust and liquid asphalt to "rejuvenate" the roads, since paving has gotten so expensive.
Around here we call that "waste lime". It's the cheapest fill to be had by the ton, but can get kinda smushy (there's that technical term) if there's no base established and it rains. I put some over larger rock and it fills the gaps real good, especially once it gets packed down into the larger stone.