PVC .. Poly Vinyl Chloride. LOL
Now that I have a little more time to look at the pictures ..
PCV is hooked up correctly.
The PCV line that comes off the Drivers side valve cover goes to your Intake Tube like Mikey said. Normally its a hard plastic line that runs under the SC snout .. it can get brittle and break, so if theres a hose on that, it goes to your Intake tube, should have an Elbow fitting on it.
Broken line on the firewall, ... no thats the condensate drain for your HVAC.
Coolant leak, unless it looks like it was running down from under the high point vent, that looks more like a thermostat housing / gasket leak. I mean, unless you see wet coolant there, its an active leak, if its just dry and corroded looking, it hasnt leaked lately. Hard to tell from the picture.