Vacuum(?) line...where does it go?

[Chumley360]

So while pulling the oil dipstick I found a hard plastic vacuum/emissions line that seems to be broken, but I can't find where it attaches. It comes up from under the car, following the fuel line and clips into the dipstick tube at the same place where the fuel line does. It comes up and 180s back down just above the fuel line. This line doesn't seem to be on my diagram, or I'm confusing it for another line. I figure it's probably part of the EVAP, but I'm not sure. Thanks

'02 3.0i