Both are very sweet, gentle giants and neither are destructive.

That does look like it could be the sheet of underlayment that is high and the door has scraped away at it - check the bottom of the door - it will have matching wear marks.If that's not it, then perhaps it was a chemical conflict... certain vinyl and rubber can often be incompatible when moisture is introduced.  

It's a gentle enough slope hill that we can use a garden tractor on to mow and go length wise so gradual grade. 

Is there a lot of moisture on the windows?

We removed a large tree that towered over the roof causing a mess with falling debris on the roof and blocked all sun which left too much moisture.

They'll wipe down all surfaces, steam fabrics, moisture barrier in the crawl space, and put in a dehumidifier, if necessary.

I also hired Dwyer company to get rid of the moisture, seal-paint the walls that are in direct contact with the ground and install a sump pump.Here is the question.Do I need to disclose to the new renter (Section 8) that in the past, mold was present in the basement?

Any wall covering that is attached to the wall where water came in, IS going to be wet behind it (including insulation, if any), and the only proper method of drying it is by removing some/all of the affected area, or using a dehumidifier with tubes inserted between the foundation and the wall covering and high volume fans to quickly (it often actually takes several days to get all of the moisture out) and completely dry all of the materials.

i'm going to assume the blocks were filled with insulation which would take care of the moisture coming thru. 

Has it settled and allowing moisture in the 2' closest?"