On Feb 19, 3:50*pm, "john"
wrote:
thanks for the replies , guys..

You can check the calibration of your meter, maybe all the reading are
hight... What kind of meter do you have?
Mark

I'm using a SafetySiren Pro Series 3 Radon Detector... Even though its relatively
inexpensive. *(under $200) *It was very close to the mailed in readings done with the
charcoal detector. * (on more than 1 occasion too)

Even though the max outdoor readings were only between 4.0 & 6.0 , *I didn't both
calling the Local Health Authorities or whatever... *If it was like 20.0...than
yeah.. *I would think something was up with the soil.

I gotta do more testing in the spring to make sure... I may even do a mailed in
charcoal reading and keep the thing outside the whole time...I guess then I'll know
for sure.

But I remember when I used to live in Jersey, they would sometimes close down certain
areas because of unusually high levels of Radon in the ground. *Like what causes
those kinds of situations ? *People dump stuff in the ground? *or is it naturally
occuring ?

I've got Radiant Heating here too ...and they think I have more than 1 slab....1 for
the garage area...and another 1 for the house. * (garage is connected to the
house...but they still think there's 2 slabs total ) * so basically nobody around
here even wants to touch it. * * I'm trying to find someone that goes the 'under the
foundation' route...with an outdoor fan..but nobody does that either...around here.
(Poconos area)

John

I just looked at one pro 3 for 130$ online, it says its accuracy is I
believe 20% or 1pctl + - That is not accurate but a rough idea. I
would think it was good when new but may not be now.