I think you can see it by the pass side frame where it connects to the fuel line vent hose. Those hoses always are dryrotted. Did you get a CEL? if not leave it be.
You will break some plastic if you want to replace it all. Pull out the plastic cover that the air dam attached to & you'll see part of it. Access sucks.
EDIT: Assuming your cars like mine...
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Steve 96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already
broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt.
Whine..eee...Silver LS6