Egr cooler leaking externally?

[Nilao]

Ok so during my prettily this morning I notice a small puddle of coolant at the rear of my engine. I traced its path back along the block to the egr cooler. Its leaking my from behind the egr cooler and running down right behind one oft he egr coolervmounting bolts which resides just in front of the oil filter. Is it possible to have a leak externally or do I need to do more searching? Also can I put my modified zero pressure cap on to finish this morning nth off to get home?