Leaking Fuel??

My 1990 GM seems to be leaking gas and some other mystery liquid. I went to the car this morning and discovered 2 small puddles (well, not quite puddles) directly under the driver's door. The smallest puddle is dark and oily, with no smell. The larger puddle is light in color and smells like gas.
Does anyone have any ideas what this could be? I'm assuming it's fuel line/pump/tank related but am just not sure.

Hi,

The non-smelling liquid could be either:
Dirty steering fluid, or even dirty brake fluid (although this is an alcohol).

Have these puddles ever shown before? anywhere?

I think the fuel line runs on the psgr side. Check it again tomorrow and park in a different place. You may have to get up under the veh and have a look, see where the drips are coming from.