If it was me, I’d opt for a solid ground especially if you don’t know about the previous ground, get a 1/2” solid copper rod and drive into the ground about 6-8’ And connect it to your electrical system or components
If it was me, I’d opt for a solid ground especially if you don’t know about the previous ground, get a 1/2” solid copper rod and drive into the ground about 6-8’ And connect it to your electrical system or components