[kaboom28]

In your picture with a large amount of oil on the ground, how long did you park in that location to have that much oil leak?

So far in this discussion, you mentioned that there may be 3 possible sources of oil leak. 1) Oil level sensor, 2) Oil pan gasket, 3) CCV. Out of these 3 possibilities, the oil pan gasket would not cause so much oil on the ground unless you park in the same location for 6 months and drive your car daily. I'm thinking oil level sensor or CCV is your major cause of oil leak.

Of course there may be other sources of oil leak that we have not considered. The pictures you have provided is only on the bottom of the car so we cannot be sure if there are other leaks.