Originally Posted by joecaption
Very poor place to store anything.
No mulch piled up against the foundation.
No flower beds forming ponds.
Grade that runs away from the foundation.
If you raise the grade where those low spots are with fill dirt there should not be any standing water.
You may even need a drain tile and a sump pump.
Moisture under the house is not a good thing.
Termites and insects love it, and it will cause mold and fungus which can eat the cellulose holding the wood fibers together.
Upon further investigation the puddles are actually on top of the plastic liner, not under it as previously stated. The plastic is clear and it looked like the plastic was lying on top of a puddle, as I started to pulled back the plastic I could see that the water was on top and not underneath. The dirt under the liner is moist but not muddy. Could the water come up through the ground and condense through the plastic to form a puddle in a low spot on the plastic? Seems odd to me but I have no idea. After discovering the water on the plastic I looked for leaking pipes but none show any signs of having leaked, there are only 2 water pipes.
I've not been able to get any decent pics on my phone but will get out the camera this evening if I can. But, I wanted to answer the questions posed thus far, if they even still apply based on new info.
The gutters are working fine, no leaks or clogs.
There is no mulch around the foundation. We do have 12" pavestones lining the foundation. After those is the grass.
The grade is pretty steep, maybe 10 degrees or so. The crawl space is under half the house, the other half is an unfinished walk out basement. No water has been seen in the basement side.
There is one vent in the crawl space, I'm guessing that is what you mean by foundation vent?
The grade in the crawl space is basically 0 degrees but certainly not flat, hope that makes sense.