Hi, I am not sure what your question is on this. As far as disposal, it all depends on where you live. Without a location in your avatar, it will be hard for anyone to help you. Where I live, I can simply take the post and cement to the local transfer station. Just pulled out an old basketball pole and hoop today and that is where I am headed.
For the gas line, you may want to get a plumber in there to abandon it.
For the gas line, you may want to get a plumber in there to abandon it.
