Terry Here, first post.. I'm planning a kitchen remodel changing from a sink on a wall to a peninsula with wall to one side. To complicate things this is on a concrete slab. The sink ends up in the same basic position with the PVC 2" drain dropping into the slab behind the cabinets where I plan a 5" void for plumbing runs. the issue is venting it as Delaware frowns upon vent valves when there is a dishwasher and disposal as well. There is currently a dedicated 1.5" vent running up the removed wall to the joists which I can connect to from the side wall. However I found that the code does not allow horizontal vent runs below the sink flood height+6" However 45 degree runs are considered vertical. I have 2 ideas in the images. Comments/ideas appreciated.