On Jul 20, 3:50�pm, "john"
wrote:
The reason im so determined with this method is because its working great so
far as is....without any drill extensions. � � The levels have come down in
48 hours since I opened that area up under the slab.....from 5.4 pcI �(48
hours ago) �to 3.9 pcI �(currently)....and continues to fall. � I've had
closed house conditions the whole time....the only other time i've seen it
drop that quickly is when I had the windows open. � So its definately
working... This may even be good advice for any of you to give to others if
you know their having a radon issue.

wrote in message

...

sewer lines nearly all underground, slab most likely 4 inches, sewer
pipe 4 inch diameter.
lines generally underground, and under slab.

crap...thats the only issue I have then currently. � The area where the
house pipes run out to the septic are right in that area. �Maybe if im
careful and just use the extension bit �(without anything sharp on the end
of it) i'll be ok. � Thats all cast iron and clay piping under there im
sure....right ? � Wouldnt be easy to drill a hole into there.

older homes have clay pipe, cast iron very rare. newer homes have
plastic pipe. clay pipe would drill pretty easy

you could do the vent hole in more than one place.