95 Tahoe Gas Leak

My 95 Tahoe (120K miles, LT,4x4,5.7L gas) has developed a serious gas leak. It puddles gas at a point about right underneath the driver's side rear floorpan. I can't see exactly where is it coming from but someone told me they thought it was the fuel filter. Any ideas?
Does anyone know where I can get a drawing of the 2 fuel lines and their layouts?

Please HELLLPPPPPP!!!!

That is were to fuel filter is on my 2 door. Just look under the body the line are in plain site. Dave