Coolant Leak / Overflow ???

[rick3000]

So it is probably one of these:

Coolant Cap
Cracked Coolant Tank
Water Pump
Clamp

I have an extended warranty ($80 deductible) which should cover any problem. Is there any way to be certain whether of not it is the coolant cap? I would prefer not to pay the $80 deductible and find out the problem was the $17 coolant cap.
I have an older coolant cap (.01). I also cannot see any coolant reading, it is either too full or too low, to be read.

Also, is there a drain on the coolant tank? How did all this coolant come out if the tank isn't cracked?

Thanks Again!