Foundation staining around sewer line

[jstaring]

I have a question on a home I inspected the other day. The sewer line/cleanout was coming out of the ground near the concrete foundation and the foundation was all black around the line. The line was capped but is the staining a sign of a leak and caused by the fumes?

[mlehman]

Jason are you sure the black wasnt water proofing that was applied to the foundation.

[John J. Passailaigue, Jr.]

A picture would be worth a thousand words. I bet it is the water proofing goop. When applied correctly, it works wonders.

[jstaring]

I have gone and uploaded pic... should have done in first place....

[William Thacker]

Almost looks like scorch marks marks. It would seem very unlikely that any amount of sewer gas would cause those marks.

I would wonder if a torch happy plumber worked on this.

[lfoster]

If it was a leak from the inside running down the foundation,,,, and someone half did the pressure washing,,,,?

[David P. Valley]

The cap is not original.

I'm willing to bet that work was done on this line in some way.

[canderson]

It looks like a chemical drain solvent splash marks from power snaking out the line, I hope the person had on PPE.

[George A. H. Luck]

What did it taste like?