The coolant was changed less than 2 years ago. No white residue yet since it started 2 days ago and I wiped clean the floor and the engine hose area. I am very positive it is coolant since the fluid feels somewhat slimy and water soluble. The brown color is most likely rust (perhaps from the water pump pulley, not sure though). I try to slip my finger behind the water pump pulley and there is a puddle there. I am thinking the leak is through the shaft that connects the pulley to the pump. I was going to replace the pump next year, but it looks like I may have to do it next week. I will try to post a bigger picture tonight.
steve