Chevrolet Repair: Air Conditioner leak, passenger floorboards, little notch

Question
I have a 2001 Suburban which has started leaking what I believe is water onto the front passenger floorboards. The leak has extended to the rear passenger floorboard as well.

I believe the air conditioner may have a leak.

Any suggestions on repair? What would that cost and where should I go?

Answer
Go under the hood, on the passengers side of the firewall, and find the heater compartment. Follow it down till you get to the edge that contacts the firewall, and find about the lowest place where that plastic housing contacts the firewall, and there should be a little notch where the plastic curves out away from the firewall, and that should be a drain port, where the condensation should drain outside the cab.
It is also possible that you might find a drain tube, but I doubt it.
Try to clean that drain port out a little. it may be plugged with dust/water, or mud.

The dripping water is normal, but it should drip outside the cab.
Van