RADIUM-226 AND. RADON-222 REMEDIAL ACTION GUIDES
(ABove BackGrounD)
RADIONUCLIDE
GUIDE
RaDON-222
>0.03
REauirReD ACTION
<0.02
No AcTION
>3pC1/1
REauirReD ACTION
+DAUGHTERS
RaDON-222
.
ACTION
STRUCTURES
BouNDARY OF CONTROLLED
PROPERTY
>30PeC1/1
REQUIRED ACTION
Over SURFACE OF CONTROLLED
PROPERTY
RADI UM-226
>15eC1/c
REqurrReD ACTION
19 cm or Less SOIL
THICKNESS
>5pC1/1
RequiReD ACTION
SURFACE WATER oR GROUND
WATER
Gamma Dose
>0.02 mMREM/HR
REQUIRED ACTION
EXTERNAL RADIATION