He is a retired city engineer so... And again, I know there are no building codes in this county.

Being an engineer doesn't make him a plumber
I don't dispute his credentials as an engineer

A handy man is just that, one day he is a painter, next a roofer...…. A jack of all trades and master of none

I went to school, did my apprenticeship and took a test to get a plumbers license
Plus here in Jersey we do a 7 hour class every two years to review the codes and renew our licenses

When I purchased my property in Virginia I went to the town hall and got a book on building codes.
Basically it said they would approve any construction project that followed the manufacturers guide lines of installation

On a final note I am glad I don't live in a state where they allow a ticking time bomb with an endless fuel source to lay in wait

Well yeah but they have allowed the state to be a toxic dumping ground for C8, and WV hasn't blown up yet.
Thanks for the insight, I appreciate it.

So here is what I did to repair the lines. There is metal pipe in the ground from that manifold that has the poly attached with hose clamps. I was a little concerned about that but after looking under the house I see every connection of the poly pipe to metal fittings is done the same way so, I guess there isn't any use in worrying about that one connection. There was a split in the poly pipe under all that tape so I have a 100 foot roll of it and will probably try to redo and sort all this out this summer. At least I got the worst of it taken care of for now. Thanks to everyone for the help!