The Power steering leak, confirmed by the red color of the leaking fluid and a low reservoir should be easy to diagnose and fix. Would I be wrong to assume a leaking hose probably?

The fuel leak is a bigger concern.

Symptoms:
With the left (driver's side) fuel tank selected I am getting a steady stream of fuel leaking out of the overflow drain from the filler cap as well as the front Evap cannister hose. The cannister is currently not installed. Fuel is returning to the filler neck faster than it can drain down past the flap in the filler neck. When I opened the right (passenger's side) filler cover there was what I can describe as a release of vacuum. I know I have read about these issues in other threads, but hoping the collective can point me in the right direction to fix the issues.

 

Dirty/rusty tanks cause the changeover valve to stick either open, closed, or partially open. Causes fuel to be returned to the wrong tank. Personally I would pull the tank level sending units (not hard) one at a time and carefully peek into the bottom of the tank with a strong flashlight. Use a long stick to check for sludge on the bottoms. If there is lots of sludge, and you simply change or clean the valve(s), you'll immediately get the same contaminants in the new valve/ fuel pump, fuel pressure regulator, injectors and then back to the return valves. You get the idea. Been here many times. I would start at the tanks, but that's my humble opinion.
If you're lucky and the tanks are clean, then it will be an easy fix to replace a changeover valve or return valve and you'll know the condition of your tanks.

 

Is that a plastic piece of some sort in the filler neck in your last pic?

 

As far as the steering fluid leak, there could be several places for it to leak. My first question would be - is the leak at the driver's side or the passenger's side? If the driver's side, it could be the seal at the top of the steering tower, or the hoses, or the bellows. If on the passenger side, it could be the hoses at the steering pump, or the bellows.

 

Power steering leak is on the driver's side. Looks like I need to get under the car to see where exactly the leak is coming from.

Good advice on the tanks. The car only has 24,000 miles and when I bought it the PO who was selling it for the woman's estate did change the injectors and associated lines, but not sure of the condition of the tanks. The good news in this is I already have two brand new tanks that I was going to use on another car, but that car has since been sold. The valves in the trunk and the ones in the rear wheel wells are all new, but that does not mean that they haven't been contaminated and have since failed. Looks like I can look forward to refreshing the entire fuels system.

PS.
I drove it home approximately 37 miles on the passenger's side tank with no fuel leaking.

 

Sounds like a classic change over valve failure and returning fuel to the wrong tank.

The return valves in the wheelwell are handed, one is normally open and the other normally closed. I can't remember which is which, but a search here or at Jag-lovers should find that quickly. You might have the wrong valves, they might be sticky, or not connected electrically, so the normally closed one isn't opening.

 

I replaced the return valves, but that doesn't mean one hasn't failed or is sticking.