Which Quarry? I see you are in NC, is it a PDRA Quarry? If its Lake Norman Quarry then there will be lots of people around on the weekend. Just show up with a big sign that says "Buddy Needed" and I'll bet you find one.
If your going to be alone at a quarry then thats bad. Even a non-diving-related accident could be a problem if your alone behind a locked gate (even though I go swimming that way all the time).
New divers can find it difficult to find dive buddys. Many divers have their little groups that they know and are comfortable with, but with a little effort it should not be too hard and as long as you show that you take it serious most will be happy do dive with you a 2ed, 3red, etc time.
I have not used this service, but you might also try ScubaBoard - Find a Dive Buddy I would check the profile and recent posts of the names you get to see if they might be a good buddy canadate.
Hey, I dive at the PDRA in your neck of the woods... I did not know you could dive solo... In fact, I thought it was prohibited!!!
To the OP (JTH2711) if I did not already have plans for this weekend and if you were local to me, I would go out on a dive with you...! FYI, if you do dive the PDRA quarry at Lake Norman, water temps at the first thermocline drops pretty quick @ 28'. 3mm is warm enough to stay above but you will need more to break through...