Finally, lets talk about Apple's factory exhaust into the ambient air next to thousands of homes and two public parks.
Much of Apple's solvent exhaust was vented out "as is" (unabated) from the main system.
The illegal solvent treatment tank exhaust did go through the untested carbon boxes, but then it was released out of a tiny vent pointed down at the building. Any gases heavier then air would be directed to the ground level to pool into toxic vapor plumes.