Need help with where this fuel hose connects

I just had to replace the fuel line on my 2004 Dodge intrepid which has the 2.7 liter engine. The line has a small pin hole leak in the nylon section up near where it clips onto the fuel rail. This is a common problem and should be a recall. Anyway I got the new Fuel line in and in the process somehow I disconnected the other line which I think is a vapor line. This line has a blue clip with a rubber hose with a metal nipple on the end.
I cannot find where this goes to.
Any help would be greatly appreciated
Thanks