Bob F wrote:
Prof Wonmug wrote:
On Wed, 19 May 2010 13:54:03 -0700, Oren wrote:

On Wed, 19 May 2010 10:50:29 -0700, Prof Wonmug wrote:

I just went out and took a few photos. The driveway is still in
shade, so they aren't that good.
Post them at tinypic.com and provide a link here in the group.

http://tinypic.com/
Here are 3 photos:


1. http://tinypic.com/r/v78j74/6

This view shows the entire stain. It is rust colored. It looks a bit
darker than the photo shows. Viewing the photo from just below
horizontal gives a good image.

The shape is about the same as the tree shadow. Notice the clean strip
under the hedge. This seems to me to confirm that it came from above.


2. http://tinypic.com/r/i70xlj/6

This is a slightly closer view. The stain area was never "wet".


3. http://tinypic.com/r/21bkaig/6

This is a closeup view. Notice that within the larger stain, there are
areas that are less stained. It seems to me that if it rained down
from above, it would have stained everywhere about the same.



Where the pavers from the same lot?
As far as I know. They arrived on 3-4 pallets and I believe the
wrapper had the same lot number.

In any case, they were all the same color when first installed and the
stain appeared in one day.

Noticeing that the stain doesn't occur below the hedge, it is pretty clear that
the stain is something dropping from the tree. Aphid dew, other bug waste, or
pollen?



I've only looked at the first picture so far. Looking at the lower
portion of the picture, it looks like the strip along the edge nearest
the hedge is of a different color, even where the "stain" isn't present.

What was there before the pavers were installed? Contacted the
contractor? County extension service"? Any work done in the area of
the stain since the pavers were installed? I would not try any
correction or cleaning before finding out what caused the stain.