The following site link provides a good walk through of a dual heat or dual fuel system.
It looks like I will get the foundation walls on Monday since there was no progress today.
There is the lot again with the "speed" van in the background since I had the kids in tow.
The vandalism has spread to our neighborhood though this looks to be planned by the owner (I hope!) At least it looks better IMO than the hack job CMM has been dealing with (glad they fixed it for you).