oil leak observation help please!
 

i recently replaced my timing chain and vvt blah blah and i have an oil leak and if i recall there is supposed to be a bolt located under our motor vin. and i right? couldnt find a bolt laying around and also if there is anyone know the size i need to replace it mazda's closed on sunday's :(


http://i45.tinypic.com/j8ek9k.jpg