The two holes in the metal deck with metal around them you see are pour stops for future AC and a place to lower engines and other heavy items into the basement.
I used 3/4" 90 degree pvc elbows to create the penetrations for the pex to go into the basement. This should make sure I have no future problems.
I have since added a pour stop for the slab at the front doors but haven't completed it yet. More pics to come as this progresses. The main goal for this summer was to complete the concrete slab and all of the ground work so grass could be planted in the spring. So far...so good.